FIRST BANK SYSTEM INC
S-4/A, 1996-12-20
NATIONAL COMMERCIAL BANKS
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<PAGE>
 
   
AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON DECEMBER 20, 1996     
                                                                    
                                                                 333-16991     
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
                      SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D.C. 20549
                               ----------------
                               
                            AMENDMENT NO. 1 TO     
                                   FORM S-4
                            REGISTRATION STATEMENT
                                     UNDER
                          THE SECURITIES ACT OF 1933
                               ----------------
        FIRST BANK SYSTEM, INC.                     FBS CAPITAL I
(EXACT NAME OF REGISTRANT AS SPECIFIED       (EXACT NAME OF REGISTRANT AS   
            IN ITS CHARTER)                SPECIFIED IN ITS TRUST AGREEMENT)
               DELAWARE                               DELAWARE
    (STATE OR OTHER JURISDICTION OF        (STATE OR OTHER JURISDICTION OF
    INCORPORATION OR ORGANIZATION)         INCORPORATION OR ORGANIZATION)
                 6712                                   6719
     (PRIMARY STANDARD INDUSTRIAL           (PRIMARY STANDARD INDUSTRIAL
      CLASSIFICATION CODE NUMBER)            CLASSIFICATION CODE NUMBER)
              41-0255900                             41-6419309
           (I.R.S. EMPLOYER                       (I.R.S. EMPLOYER
          IDENTIFICATION NO.)                    IDENTIFICATION NO.)
           FIRST BANK PLACE                    FIRST BANK SYSTEM, INC.
        601 SECOND AVENUE SOUTH                   FIRST BANK PLACE
        MINNEAPOLIS, MINNESOTA                 601 SECOND AVENUE SOUTH
              55402-4302                  MINNEAPOLIS, MINNESOTA 55402-4302
            (612) 973-1111                         (612) 973-1111
   (ADDRESS, INCLUDING ZIP CODE, AND      (ADDRESS, INCLUDING ZIP CODE, AND
           TELEPHONE NUMBER,           TELEPHONE NUMBER, INCLUDING AREA CODE,
INCLUDING AREA CODE, OF REGISTRANT'S     OF REGISTRANT'S PRINCIPAL EXECUTIVE
PRINCIPAL EXECUTIVE OFFICES)                          OFFICES)
                               ----------------
                                 LEE R. MITAU
                               FIRST BANK PLACE
                            601 SECOND AVENUE SOUTH
                       MINNEAPOLIS, MINNESOTA 55402-4302
                                (612) 973-1111
           (NAME, ADDRESS, INCLUDING ZIP CODE, AND TELEPHONE NUMBER,
         INCLUDING AREA CODE, OF AGENT FOR SERVICE OF EACH REGISTRANT)
                                WITH COPIES TO:
                            CHARLES F. SAWYER, ESQ.
                             DORSEY & WHITNEY LLP
                            PILLSBURY CENTER SOUTH
                            220 SOUTH SIXTH STREET
                       MINNEAPOLIS, MINNESOTA 55402-4302
                                (612) 340-2600
                               ----------------
  APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC: As soon as
practicable after the effective date of this Registration Statement.
  If the securities being registered on this Form are being offered in
connection with the formation of a holding company and there is compliance
with General Instruction G, please check the following box. [_]
 
                        CALCULATION OF REGISTRATION FEE
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- -------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                          PROPOSED      PROPOSED
                                           MAXIMUM       MAXIMUM
 TITLE OF EACH CLASS OF      AMOUNT       OFFERING      AGGREGATE     AMOUNT OF
    SECURITIES TO BE          TO BE         PRICE       OFFERING     REGISTRATION
       REGISTERED          REGISTERED    PER UNIT(1)    PRICE(1)         FEE
- ---------------------------------------------------------------------------------
<S>                      <C>             <C>         <C>             <C>
Capital Securities of
 FBS Capital I.........   $300,000,000      100%      $300,000,000    $90,909.00
- ---------------------------------------------------------------------------------
Junior Subordinated
 Deferrable Interest
 Debentures of First
 Bank System, Inc.(2)..        --            --            --             NA
- ---------------------------------------------------------------------------------
First Bank System, Inc.
 Guarantee with respect
 to Capital
 Securities(3).........        --            --            --             NA
- ---------------------------------------------------------------------------------
Total(4)...............  $300,000,000(5)    100%     $300,000,000(5)  $90,909.00
</TABLE>
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
(1) Estimated solely for the purpose of computing the registration fee.
(2) The Junior Subordinated Deferrable Interest Debentures (the "Junior
    Subordinated Debentures") were originally purchased by FBS Capital I with
    the proceeds of the sale of the Capital Securities. No separate
    consideration will be received for the Junior Subordinated Debentures
    distributed upon any liquidation of FBS Capital I.
(3) No separate consideration will be received for the First Bank System, Inc.
    Guarantee.
(4) This Registration Statement is deemed to cover the Junior Subordinated
    Debentures of First Bank System, Inc., the rights of holders of Junior
    Subordinated Debentures of First Bank System, Inc. under the Indenture,
    the rights of holders of Capital Securities of FBS Capital I under a Trust
    Agreement, the rights of holders of the Capital Securities under the
    Guarantee, the Expense Agreement entered into by First Bank System, Inc.
    and certain backup undertakings as described herein.
(5) Such amount represents the initial public offering price of the FBS
    Capital I Capital Securities to be exchanged hereunder and the principal
    amount of Junior Subordinated Debentures that may be distributed upon any
    liquidation of FBS Capital I.
                               ----------------
  The Registrants hereby amend this Registration Statement on such date or
dates as may be necessary to delay its effective date until the Registrants
shall file a further amendment which specifically states that this
Registration Statement shall thereafter become effective in accordance with
Section 8(a) of the Securities Act of 1933 or until the Registration Statement
shall become effective on such date as the Commission, acting pursuant to said
Section 8(a), may determine.
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
<PAGE>
 
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+INFORMATION CONTAINED HEREIN IS SUBJECT TO COMPLETION OR AMENDMENT. A         +
+REGISTRATION STATEMENT RELATING TO THESE SECURITIES HAS BEEN FILED WITH THE   +
+SECURITIES AND EXCHANGE COMMISSION. THESE SECURITIES MAY NOT BE SOLD NOR MAY  +
+OFFERS TO BUY BE ACCEPTED PRIOR TO THE TIME THE REGISTRATION STATEMENT        +
+BECOMES EFFECTIVE. THIS PROSPECTUS SHALL NOT CONSTITUTE AN OFFER TO SELL OR   +
+THE SOLICITATION OF AN OFFER TO BUY NOR SHALL THERE BE ANY SALE OF THESE      +
+SECURITIES IN ANY STATE IN WHICH SUCH OFFER, SOLICITATION OR SALE WOULD BE    +
+UNLAWFUL PRIOR TO REGISTRATION OR QUALIFICATION UNDER THE SECURITIES LAWS OF  +
+ANY SUCH STATE.                                                               +
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
                 
              SUBJECT TO COMPLETION, DATED DECEMBER 20, 1996     
 
PROSPECTUS                       FBS CAPITAL I
 
[LOGO OF FBS CAPITAL I APPEARS HERE]

                 OFFER TO EXCHANGE ITS 8.09% CAPITAL SECURITIES
          WHICH HAVE BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933
          FOR ANY AND ALL OF ITS OUTSTANDING 8.09% CAPITAL SECURITIES
 
                (LIQUIDATION AMOUNT $1,000 PER CAPITAL SECURITY)
         FULLY AND UNCONDITIONALLY GUARANTEED, AS DESCRIBED HEREIN, BY
                            FIRST BANK SYSTEM, INC.
 
       THE EXCHANGE OFFER AND WITHDRAWAL RIGHTS WILL EXPIRE AT 5:00 P.M.,
             NEW YORK CITY TIME, ON       , 199 , UNLESS EXTENDED.
   
  FBS Capital I, a trust formed under the laws of the State of Delaware (the
"Trust") and First Bank System Inc., a Delaware corporation, as Depositor
("FBS" or the "Company"), hereby offer, upon the terms and subject to the
conditions set forth in this Prospectus (as the same may be amended or
supplemented from time to time, the "Prospectus") and in the accompanying
Letter of Transmittal (which together constitute the "Exchange Offer"), to
exchange up to $300,000,000 aggregate Liquidation Amount of its 8.09% Capital
Securities (the "New Capital Securities") which have been registered under the
Securities Act of 1933, as amended (the "Securities Act"), pursuant to a
Registration Statement (as defined herein) of which this Prospectus constitutes
a part, for a like Liquidation Amount of its outstanding 8.09% Capital
Securities (the "Old Capital Securities"), of which $300,000,000 aggregate
Liquidation Amount is outstanding. Pursuant to the Exchange Offer, FBS is also
exchanging its guarantee of the payment of Distributions and payments on
liquidation or redemption of the Old Capital Securities (the "Old Guarantee")
for a like guarantee of the New Capital Securities (the "New Guarantee") and
all of its 8.09% Junior Subordinated Deferrable Interest Debentures (the "Old
Junior Subordinated Debentures"), of which $309,279,000 aggregate principal
amount is outstanding, for like aggregate principal of its 8.09% Junior
Subordinated Deferrable Interest Debentures (the "New Junior Subordinated
Debentures"), which New Guarantee and New Junior Subordinated Debentures also
have been registered under the Securities Act. The Old Capital Securities, the
Old Guarantee and the Old Junior Subordinated Debentures are collectively
referred to herein as the "Old Securities" and the New Capital Securities, the
New Guarantee and the New Junior Subordinated Debentures are collectively
referred to herein as the "New Securities."     
 
  The terms of the New Securities are identical in all material respects to the
respective terms of the Old Securities, except that (i) the New Securities have
been registered under the Securities Act and therefore will not be subject to
certain restrictions on transfer applicable to the Old Securities, (ii) the New
Capital Securities will not provide for any increase in the Distribution rate
thereon and (iii) the New Junior Subordinated Debentures will not provide for
any increase in the interest rate thereon.
                                                      
                                                   (Continued on next page)     
 
                                  ----------
 
  SEE "RISK FACTORS" COMMENCING ON PAGE 17 FOR CERTAIN INFORMATION THAT SHOULD
BE CONSIDERED BY HOLDERS WHO TENDER OLD CAPITAL SECURITIES IN THE EXCHANGE
OFFER.
 
   THESE SECURITIES ARE NOT DEPOSITS OR  OTHER OBLIGATIONS OF A BANK AND ARE
      NOT INSURED  BY THE  FEDERAL DEPOSIT  INSURANCE CORPORATION  OR ANY
         OTHER GOVERNMENTAL AGENCY.
 
                                  ----------
 
THESE SECURITIES  HAVE NOT BEEN APPROVED  OR DISAPPROVED BY THE  SECURITIES AND
 EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE SECURITIES
 AND EXCHANGE  COMMISSION OR ANY  STATE SECURITIES COMMISSION PASSED  UPON THE
  ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY
  IS A CRIMINAL OFFENSE.
 
                                  ----------
   
THE CAPITAL SECURITIES WILL BE ISSUED, AND MAY BE TRANSFERRED, ONLY IN BLOCKS
HAVING A LIQUIDATION AMOUNT OF NOT LESS THAN $100,000 (100 CAPITAL SECURITIES).
ANY TRANSFER, SALE OR OTHER DISPOSITION OF CAPITAL SECURITIES IN A BLOCK HAVING
A LIQUIDATION AMOUNT OF LESS THAN $100,000 SHALL BE DEEMED TO BE VOID AND OF NO
LEGAL EFFECT WHATSOEVER. ANY SUCH TRANSFEREE SHALL BE DEEMED NOT TO BE THE
HOLDER OF SUCH CAPITAL SECURITIES FOR ANY PURPOSE, INCLUDING BUT NOT LIMITED TO
THE RECEIPT OF DISTRIBUTIONS ON SUCH CAPITAL SECURITIES, AND SUCH TRANSFEREE
SHALL BE DEEMED TO HAVE NO INTEREST WHATSOEVER IN SUCH CAPITAL SECURITIES.     
 
                                  ----------
                 
              The date of this Prospectus is          , 199 .     
<PAGE>
 
   
(Continued from previous page)     
   
  See "Description of the New Securities" and "Description of the Old
Securities." The New Capital Securities are being offered for exchange in
order to satisfy certain obligations of FBS and the Trust under the Exchange
and Registration Rights Agreement dated as of November 26, 1996 (the "Capital
Securities Registration Rights Agreement") among FBS, the Trust and the
Initial Purchasers (as defined herein). The New Junior Subordinated Debentures
are being offered for exchange under the Exchange and Registration Rights
Agreement dated as of November 26, 1996 among FBS, the Trust and the Initial
Purchasers (the "Junior Subordinated Debentures Registration Rights
Agreement") and the New Guarantee is being offered for exchange under the
Exchange and Registration Rights Agreement dated as of November 26, 1996 among
FBS, the Trust and the Initial Purchasers (the "Guarantee Registration Rights
Agreement" together with the Capital Securities Registration Rights Agreement
and the Junior Subordinated Debentures Registration Rights Agreement, the
"Registration Rights Agreements"). In the event that the Exchange Offer is
consummated, any Old Capital Securities which remain outstanding after
consummation of the Exchange Offer and the New Capital Securities issued in
the Exchange Offer will vote together as a single class for purposes of
determining whether holders of the requisite percentage in outstanding
Liquidation Amount thereof have taken certain actions or exercised certain
rights under the Trust Agreement.     
   
  The New Capital Securities and the Old Capital Securities (together, the
"Capital Securities"), represent beneficial interests in the Trust. FBS is the
owner of all of the beneficial interests represented by common securities of
the Trust (the "Common Securities" and, collectively with the Capital
Securities, the "Trust Securities"). Wilmington Trust Company is the Property
Trustee of the Trust. The Trust exists for the sole purpose of issuing the
Trust Securities and investing the proceeds thereof in the Junior Subordinated
Debentures. The Junior Subordinated Debentures will mature on November 15,
2026 (the "Stated Maturity"). The Capital Securities will have a preference
under certain circumstances with respect to cash distributions and amounts
payable on liquidation, redemption or otherwise over the Common Securities.
See "Description of the New Securities--Description of Capital Securities--
Subordination of Common Securities."     
 
   As used herein, (i) the "Indenture" means the Junior Subordinated
Indenture, as amended and supplemented from time to time, between FBS and
Wilmington Trust Company as trustee (the "Debenture Trustee"), (ii) the "Trust
Agreement" means the Amended and Restated Trust Agreement relating to the
Trust among FBS, as Depositor, Wilmington Trust Company as Property Trustee
(the "Property Trustee"), Wilmington Trust Company as Delaware Trustee (the
"Delaware Trustee"), and the Administrative Agents named therein
(collectively, with the Property Trustee and Delaware Trustee, the "Issuer
Trustees"), (iii) the "Guarantee Agreement" means the Guarantee Agreement
relating to the Guarantee between FBS and Wilmington Trust Company, as trustee
(the "Guarantee Trustee") and (iv) the "Expense Agreement" means the Expense
Agreement between FBS and the Trust. In addition, as the context may require,
unless expressly stated otherwise, (i) "Capital Securities" includes the Old
Capital Securities and the New Capital Securities, (ii) "Junior Subordinated
Debentures" includes the Old Junior Subordinated Debentures and the New Junior
Subordinated Debentures and (iii) "Guarantee" includes the Old Guarantee and
the New Guarantee.
 
  Holders of the Capital Securities will be entitled to receive preferential
cumulative cash distributions, and the holder of the Common Securities will be
entitled to receive cumulative cash distributions arising from the payment of
interest on the Junior Subordinated Debentures accruing from November 15,
1996, and payable semi-annually in arrears on May 15 and November 15 of each
year, commencing May 15, 1997, at the annual rate of 8.09% of the Liquidation
Amount of $1,000 per New Capital Security and at the annual rate of 8.09% of
the Liquidation Amount of $1,000 per Common Security ("Distributions"). FBS
has the right to defer payments of interest on the Junior Subordinated
Debentures at any time or from time to time for a period not exceeding 10
consecutive semi-annual periods with respect to each deferral period (each, an
"Extension Period"), provided that no Extension Period may extend beyond the
Stated Maturity. Upon the termination of any such Extension Period and the
payment of all amounts then due, FBS may elect to begin a new Extension Period
subject to the requirements set forth herein. If interest payments on the
Junior Subordinated Debentures are so deferred, Distributions on the Capital
Securities and on the Common Securities will also be deferred and FBS will not
be permitted, subject to certain exceptions described herein, to declare or
pay any cash distributions with respect to
 
                                       2
<PAGE>
 
   
FBS's capital stock (which includes common and preferred stock) or to make any
payment with respect to debt securities of FBS that rank pari passu with or
junior to the Junior Subordinated Debentures. During an Extension Period,
interest on the Junior Subordinated Debentures will continue to accrue (and
the amount of Distributions to which holders of the Capital Securities are
entitled will accumulate) at the rate of 8.09% per annum, compounded semi-
annually, and holders of Capital Securities will be required to accrue
interest income for United States federal income tax purposes. See
"Description of the New Securities--Description of Junior Subordinated
Debentures--Option to Extend Interest Payment Period" and "Certain Federal
Income Tax Consequences--Interest Income and Original Issue Discount."     
   
  FBS has, through the Guarantee, the Trust Agreement, the Junior Subordinated
Debentures, the Indenture and the Expense Agreement, taken together, fully,
irrevocably and unconditionally guaranteed all of the Trust's obligations
under the Capital Securities. See "Relationship Among the Capital Securities,
the Junior Subordinated Debentures and the Guarantee--Full and Unconditional
Guarantee." The Guarantee of FBS guarantees the payment of Distributions and
payments on liquidation or redemption of the Capital Securities, but only in
each case to the extent of funds held by the Trust, as described herein. See
"Description of the New Securities--Description of Guarantee." If FBS does not
make interest payments on the Junior Subordinated Debentures held by the
Trust, the Trust will have insufficient funds to pay Distributions on the
Capital Securities. The Guarantee does not cover payment of Distributions when
the Trust does not have sufficient funds to pay such Distributions. In such
event, a holder of Capital Securities may institute a legal proceeding
directly against FBS to enforce payment of such Distributions to such holder.
See "Description of the New Securities--Description of Junior Subordinated
Debentures--Enforcement of Certain Rights By Holders of Capital Securities."
The obligations of FBS under the Guarantee and the Junior Subordinated
Debentures are subordinate and junior in right of payment to all Senior and
Subordinated Debt (as defined in "Description of the New Securities--
Description of Junior Subordinated Debentures--Subordination").     
   
  The Trust Securities are subject to mandatory redemption, in whole but not
in part, (i) at the Stated Maturity upon repayment of the Junior Subordinated
Debentures at a redemption price equal to the principal amount of, plus
accrued interest on, the Junior Subordinated Debentures (the "Maturity
Redemption Price"), (ii) at any time, contemporaneously with the prepayment of
the Junior Subordinated Debentures upon the occurrence and continuation of a
Tax Event (as defined herein) at a redemption price equal to the Tax Event
Prepayment Price (as defined below) (the "Tax Event Redemption Price") and
(iii) on or after November 15, 2006 contemporaneously with the optional
prepayment by FBS of the Junior Subordinated Debentures at a redemption price
equal to the Optional Prepayment Price (as defined below) (the "Optional
Redemption Price"). Any of the Maturity Redemption Price, the Tax Event
Redemption Price and the Optional Redemption Price may be referred to herein
as the "Redemption Price." See "Description of the New Securities--Description
of Capital Securities--Redemption." Subject to FBS having received prior
approval of the Board of Governors of the Federal Reserve System (the "Federal
Reserve") to do so if then required under applicable capital guidelines or
policies of the Federal Reserve, the Junior Subordinated Debentures are
prepayable prior to the Stated Maturity at the option of FBS (i) on or after
November 15, 2006, in whole (but not in part) at any time at a prepayment
price (the "Optional Prepayment Price") equal to 104.045% of the principal
amount thereof on November 15, 2006, declining ratably on each November 15
thereafter to 100% on or after November 15, 2016, plus accrued interest
thereon to the date of prepayment, or (ii) at any time, in whole (but not in
part), upon the occurrence and continuation of a Tax Event (as defined
herein), at a prepayment price (the "Tax Event Prepayment Price") equal to the
greater of (a) 100% of the principal amount thereof or (b) as determined by a
Quotation Agent (as defined herein), the sum of the present values of the
remaining scheduled payments of principal and the interest thereon discounted
to the prepayment date on a semi-annual basis (assuming a 360-day year
consisting of twelve 30-day months) at the Adjusted Treasury Rate (as defined
herein) plus, in either case, accrued interest thereon to the date of
prepayment. Either of the Optional Prepayment Price or the Tax Event
Prepayment Price may be referred to herein as the "Prepayment Price." See
"Description of the New Securities--Description of Junior Subordinated
Debentures--Optional Prepayment" and "--Tax Event Prepayment."     
 
  FBS will have the right at any time to terminate the Trust and cause a Like
Amount (as defined herein) of the Junior Subordinated Debentures to be
distributed to the holders of the Trust Securities in liquidation of the
 
                                       3
<PAGE>
 
   
Trust, subject to FBS having received an opinion of counsel to the effect that
such distribution will not be a taxable event to holders of Capital Securities
and prior approval of the Federal Reserve to do so if then required under
applicable capital guidelines or policies of the Federal Reserve. In the event
of such termination of the Trust, after satisfaction of liabilities to
creditors of the Trust as required by applicable law, the holders of the
Capital Securities generally will be entitled to receive a Liquidation Amount
of $1,000 per Capital Security plus accumulated and unpaid Distributions
thereon to the date of payment, which may be in the form of a distribution of
a Like Amount of Junior Subordinated Debentures, subject to certain
exceptions. See "Description of the New Securities--Description of Capital
Securities--Liquidation of the Trust and Distribution of Junior Subordinated
Debentures."     
   
THE CAPITAL SECURITIES WILL BE ISSUED, AND MAY BE TRANSFERRED, ONLY IN BLOCKS
HAVING A LIQUIDATION AMOUNT OF NOT LESS THAN $100,000 (100 CAPITAL
SECURITIES). ANY TRANSFER, SALE OR OTHER DISPOSITION OF CAPITAL SECURITIES IN
A BLOCK HAVING A LIQUIDATION AMOUNT OF LESS THAN $100,000 SHALL BE DEEMED TO
BE VOID AND OF NO LEGAL EFFECT WHATSOEVER. ANY SUCH TRANSFEREE SHALL BE DEEMED
NOT TO BE THE HOLDER OF SUCH CAPITAL SECURITIES FOR ANY PURPOSE, INCLUDING BUT
NOT LIMITED TO THE RECEIPT OF DISTRIBUTIONS ON SUCH CAPITAL SECURITIES, AND
SUCH TRANSFEREE SHALL BE DEEMED TO HAVE NO INTEREST WHATSOEVER IN SUCH CAPITAL
SECURITIES.     
   
  FBS and the Trust are making the Exchange Offer of the New Capital
Securities in reliance on the position of the staff of the Division of
Corporation Finance of the Securities and Exchange Commission (the
"Commission") as set forth in certain interpretive letters addressed to third
parties in other transactions. However, neither FBS nor the Trust has sought
its own interpretive letter and there can be no assurance that the staff of
the Division of Corporation Finance of the Commission would make a similar
determination with respect to the Exchange Offer as it has in such
interpretive letters to third parties. Based on these interpretations by the
staff of the Division of Corporation Finance, and subject to the two
immediately following sentences, FBS and the Trust believe that New Capital
Securities issued pursuant to this Exchange Offer in exchange for Old Capital
Securities may be offered for resale, resold and otherwise transferred by a
holder thereof (other than a holder who is a broker-dealer) without further
compliance with the registration and prospectus delivery requirements of the
Securities Act, provided that such New Capital Securities are acquired in the
ordinary course of such holder's business and that such holder is not
participating, and has no arrangement or understanding with any person to
participate, in a distribution (within the meaning of the Securities Act) of
such New Capital Securities. However, any holder of Old Capital Securities who
is an "affiliate" of FBS or the Trust or who intends to participate in the
Exchange Offer for the purpose of distributing New Capital Securities, or any
broker-dealer who purchased Old Capital Securities from the Trust to resell
pursuant to Rule 144A under the Securities Act ("Rule 144A") or any other
available exemption under the Securities Act, (a) will not be able to rely on
the interpretations of the staff of the Division of Corporation Finance of the
Commission set forth in the above-mentioned interpretive letters, (b) will not
be permitted or entitled to tender such Old Capital Securities in the Exchange
Offer and (c) must comply with the registration and prospectus delivery
requirements of the Securities Act in connection with any sale or other
transfer of such Old Capital Securities unless such sale is made pursuant to
an exemption from such requirements. In addition, as described below, if any
broker-dealer holds Old Capital Securities acquired for its own account as a
result of market-making or other trading activities and exchanges such Old
Capital Securities for New Capital Securities, then such broker-dealer must
deliver a prospectus meeting the requirements of the Securities Act in
connection with any resales of such New Capital Securities.     
 
  Each holder of Old Capital Securities who wishes to exchange Old Capital
Securities for New Capital Securities in the Exchange Offer will be required
to represent that (i) it is not an "affiliate" of FBS or the Trust, (ii) any
New Capital Securities to be received by it are being acquired in the ordinary
course of its business, (iii) it has no arrangement or understanding with any
person to participate in a distribution (within the meaning of the Securities
Act) of such New Capital Securities, and (iv) if such holder is not a broker-
dealer, such holder is not engaged in, and does not intend to engage in, a
distribution (within the meaning of the Securities Act) of such New Capital
Securities. In addition, FBS and the Trust may require such holder, as a
condition to such
 
                                       4
<PAGE>
 
   
holder's eligibility to participate in the Exchange Offer, to furnish to FBS
and the Trust (or an agent thereof) in writing information as to the number of
"beneficial owners" (within the meaning of Rule 13d-3 under the Securities
Exchange Act of 1934, as amended) on behalf of whom such holder holds the
Capital Securities to be exchanged in the Exchange Offer. Each broker-dealer
that receives New Capital Securities for its own account pursuant to the
Exchange Offer must acknowledge that it acquired the Old Capital Securities
for its own account as the result of market-making activities or other trading
activities and must agree that it will deliver a prospectus meeting the
requirements of the Securities Act in connection with any resale of such New
Capital Securities. The Letter of Transmittal states that by so acknowledging
and by delivering a prospectus, a broker-dealer will not be deemed to admit
that it is an "underwriter" within the meaning of the Securities Act. Based on
the position taken by the staff of the Division of Corporation Finance of the
Commission in the interpretive letters referred to above, FBS and the Trust
believe that broker-dealers who acquired Old Capital Securities for their own
accounts, as a result of market-making activities or other trading activities
("Participating Broker-Dealers") may fulfill their prospectus delivery
requirements with respect to the New Capital Securities received upon exchange
of such Old Capital Securities (other than Old Capital Securities which
represent an unsold allotment from the original sale of the Old Capital
Securities) with a prospectus meeting the requirements of the Securities Act,
which may be the prospectus prepared for an exchange offer so long as it
contains a description of the plan of distribution with respect to the resale
of such New Capital Securities. Accordingly, this Prospectus, as it may be
amended or supplemented from time to time, may be used by a Participating
Broker-Dealer during the period referred to below in connection with resales
of New Capital Securities received in exchange for Old Capital Securities
where such Old Capital Securities were acquired by such Participating Broker-
Dealer for its own account as a result of market-making or other trading
activities. Subject to certain provisions set forth in the Capital Securities
Registration Rights Agreement, FBS and the Trust have agreed that this
Prospectus, as it may be amended or supplemented from time to time, may be
used by a Participating Broker-Dealer in connection with resales of such New
Capital Securities for a period ending 90 days after the Expiration Date or,
if earlier, when all such New Capital Securities have been disposed of by such
Participating Broker-Dealer. See "Plan of Distribution." Any Participating
Broker-Dealer who is an "affiliate" of FBS or the Trust may not rely on such
interpretive letters and must comply with the registration and prospectus
delivery requirements of the Securities Act in connection with any resale
transaction. See "The Exchange Offer--Resales of New Capital Securities."     
   
  In that regard, each Participating Broker-Dealer who surrenders Old Capital
Securities pursuant to the Exchange Offer will be deemed to have agreed, by
execution of the Letter of Transmittal, that, upon receipt of notice from FBS
or the Trust of the occurrence of any event or the discovery of any fact which
makes any statement contained or incorporated by reference in this Prospectus
untrue in any material respect or which causes this Prospectus to omit to
state a material fact necessary in order to make the statements contained or
incorporated by reference herein, in light of the circumstances under which
they were made, not misleading or of the occurrence of certain other events
specified in the Registration Rights Agreements, such Participating Broker-
Dealer will suspend the sale of New Capital Securities (or the New Guarantee
or the New Junior Subordinated Debentures, as applicable) pursuant to this
Prospectus until FBS or the Trust has amended or supplemented this Prospectus
to correct such misstatement or omission and has furnished copies of the
amended or supplemented Prospectus to such Participating Broker-Dealer or FBS
or the Trust has given notice that the sale of the New Capital Securities (or
the New Guarantee or the New Junior Subordinated Debentures, as applicable)
may be resumed, as the case may be.     
   
  Prior to the Exchange Offer, there has been only a limited secondary market
and no public market for the Old Capital Securities. The New Capital
Securities will be a new issue of securities for which there currently is no
market. Although the Initial Purchasers have informed FBS and the Trust that
they each currently intend to make a market in the New Capital Securities,
they are not obligated to do so, and any such market making may be
discontinued at any time without notice. Accordingly, there can be no
assurance as to the development or liquidity of any market for the New Capital
Securities. Neither FBS nor the Trust currently intends to apply for listing
of the New Capital Securities on any securities exchange or for quotation
through the National Association of Securities Dealers Automated Quotation
System.     
 
                                       5
<PAGE>
 
  Any Old Capital Securities not tendered and accepted in the Exchange Offer
will remain outstanding and will be entitled to all the same rights and will
be subject to the same limitations applicable thereto under the Trust
Agreement (except for those rights which terminate upon consummation of the
Exchange Offer). Following consummation of the Exchange Offer, the holders of
Old Capital Securities will continue to be subject to all of the existing
restrictions upon transfer thereof and neither FBS nor the Trust will have any
further obligation to such holders (other than under certain limited
circumstances) to provide for registration under the Securities Act of the Old
Capital Securities held by them. To the extent that Old Capital Securities are
tendered and accepted in the Exchange Offer, a holder's ability to sell
untendered Old Capital Securities could be adversely affected. See "Risk
Factors--Consequences of a Failure to Exchange Old Capital Securities."
   
  THIS PROSPECTUS AND THE RELATED LETTER OF TRANSMITTAL CONTAIN IMPORTANT
INFORMATION. HOLDERS OF OLD CAPITAL SECURITIES ARE URGED TO READ THIS
PROSPECTUS AND THE RELATED LETTER OF TRANSMITTAL CAREFULLY BEFORE DECIDING
WHETHER TO TENDER THEIR OLD CAPITAL SECURITIES PURSUANT TO THE EXCHANGE OFFER.
       
  Old Capital Securities may be tendered for exchange on or prior to 5:00
p.m., New York City time, on         , 199  (such time on such date being
hereinafter called the "Expiration Date"), unless the Exchange Offer is
extended by FBS and the Trust (in which case the term "Expiration Date" shall
mean the latest date and time to which the Exchange Offer is extended).
Tenders of Old Capital Securities may be withdrawn at any time on or prior to
the Expiration Date. The Exchange Offer is not conditioned upon any minimum
Liquidation Amount of Old Capital Securities being tendered for exchange.
However, the Exchange Offer is subject to certain events and conditions which
may be waived by FBS or the Trust and to the terms and provisions of the
Capital Securities Registration Rights Agreement. Old Capital Securities may
be tendered in whole or in part having a Liquidation Amount of not less than
$100,000 (100 Capital Securities) and or any integral multiple of $1,000
Liquidation Amount (1 Capital Security) in excess thereof. FBS has agreed to
pay all expenses of the Exchange Offer. See "The Exchange Offer--Fees and
Expenses." Each New Capital Security will pay cumulative Distributions from
the most recent Distribution Date on the Old Capital Securities surrendered in
exchange for such New Capital Securities or, if no Distributions have been
paid on such Old Capital Securities, from November 15, 1996. Holders of the
Old Capital Securities whose Old Capital Securities are accepted for exchange
will not receive accumulated Distributions on such Old Capital Securities for
any period from and after the last Distribution Date on such Old Capital
Securities prior to the original issue date of the New Capital Securities or,
if no such Distributions have been paid, will not receive any accumulated
Distributions on such Old Capital Securities, and will be deemed to have
waived the right to receive any Distributions on such Old Capital Securities
accumulated from and after such Distribution Date or, if no such interest has
been paid or duly provided for, from and after November 15, 1996. This
Prospectus, together with the Letter of Transmittal, is being sent to all
registered holders of Old Capital Securities as of         , 1996.     
 
  Neither FBS nor the Trust will receive any cash proceeds from the issuance
of the New Capital Securities offered hereby. No dealer-manager is being used
in connection with this Exchange Offer. See "Use of Proceeds From Sale of Old
Capital Securities" and "Plan of Distribution."
 
                               ----------------
 
  NO PERSON HAS BEEN AUTHORIZED TO GIVE ANY INFORMATION OR TO MAKE ANY
REPRESENTATION NOT CONTAINED IN THIS PROSPECTUS AND, IF GIVEN OR MADE, SUCH
INFORMATION OR REPRESENTATION MUST NOT BE RELIED UPON AS HAVING BEEN
AUTHORIZED BY FBS OR THE TRUST. THIS PROSPECTUS DOES NOT CONSTITUTE AN OFFER
OF ANY SECURITIES OTHER THAN THE SECURITIES TO WHICH IT RELATES OR AN OFFER TO
ANY PERSON IN ANY JURISDICTION WHERE SUCH OFFER WOULD BE UNLAWFUL. NEITHER THE
DELIVERY OF THIS PROSPECTUS NOR ANY SALE MADE HEREUNDER SHALL, UNDER ANY
CIRCUMSTANCES, CREATE ANY IMPLICATION THAT THERE HAS NOT BEEN ANY CHANGE IN
THE AFFAIRS OF FBS OR THE TRUST SINCE THE DATE HEREOF.
 
                               ----------------
 
                                       6
<PAGE>
 
                               TABLE OF CONTENTS
<TABLE>   
<CAPTION>
                                                                           PAGE
                                                                           ----
<S>                                                                        <C>
Available Information.....................................................   8
Incorporation of Certain Documents by Reference...........................   8
Summary...................................................................  10
Risk Factors..............................................................  17
Ratios of Earnings to Fixed Charges.......................................  22
Use of Proceeds from Sale of Old Capital Securities.......................  22
Capitalization............................................................  23
Dividend History..........................................................  23
FBS Capital I.............................................................  24
First Bank System, Inc....................................................  25
The Exchange Offer........................................................  26
Description of the New Securities.........................................  34
Description of the Old Securities.........................................  56
Relationship Among the Capital Securities, the Junior Subordinated
 Debentures and the Guarantee.............................................  56
Certain Federal Income Tax Consequences...................................  57
ERISA Considerations......................................................  61
Plan of Distribution......................................................  62
Validity of the New Securities............................................  63
Experts...................................................................  63
</TABLE>    
 
                         FOR CALIFORNIA RESIDENTS ONLY
 
  WITH RESPECT TO SALES OF THE SECURITIES BEING OFFERED HEREBY TO CALIFORNIA
RESIDENTS, SUCH SECURITIES MAY BE SOLD ONLY TO (1) "ACCREDITED INVESTORS"
WITHIN THE MEANING OF REGULATION D UNDER THE SECURITIES ACT OF 1933, (2)
BANKS, SAVINGS AND LOAN ASSOCIATIONS, TRUST COMPANIES, INSURANCE COMPANIES,
INVESTMENT COMPANIES REGISTERED UNDER THE INVESTMENT COMPANY ACT OF 1940,
PENSION AND PROFIT SHARING TRUSTS, CORPORATIONS OR OTHER ENTITIES WHICH,
TOGETHER WITH THE CORPORATION'S OR OTHER ENTITY'S AFFILIATES, HAVE A NET WORTH
ON A CONSOLIDATED BASIS ACCORDING TO THEIR MOST RECENT REGULARLY PREPARED
FINANCIAL STATEMENTS (WHICH SHALL HAVE BEEN REVIEWED, BUT NOT NECESSARILY
AUDITED, BY OUTSIDE ACCOUNTANTS) OF NOT LESS THAN $14,000,000 AND SUBSIDIARIES
OF THE FOREGOING, (3) ANY CORPORATION, PARTNERSHIP OR ORGANIZATION (OTHER THAN
A CORPORATION, PARTNERSHIP OR ORGANIZATION FORMED FOR THE SOLE PURPOSE OF
PURCHASING THE SECURITIES OFFERED HEREBY) WHO PURCHASES AT LEAST $1,000,000
AGGREGATE AMOUNT OF THE SECURITIES OFFERED HEREBY, (4) ANY NATURAL PERSON WHO
(A) HAS INCOME OF $65,000 AND A NET WORTH OF $250,000, OR (B) HAS A NET WORTH
OF $500,000 (IN EACH CASE, EXCLUDING HOME, HOME FURNISHINGS AND PERSONAL
AUTOMOBILES), OR (5) ANY "QUALIFIED INSTITUTIONAL BUYER" AS DEFINED UNDER RULE
144A OF THE SECURITIES ACT.
 
                                       7
<PAGE>
 
                             AVAILABLE INFORMATION
 
  FBS is subject to the informational requirements of the Securities Exchange
Act of 1934, as amended (the "Exchange Act"), and in accordance therewith,
files reports, proxy statements and other information with the Securities and
Exchange Commission (the "Commission"). Such reports, proxy statements and
other information can be inspected and copied at the public reference
facilities of the Commission at Room 1024, 450 Fifth Street, N.W., Washington,
D.C. 20549 and at the regional offices of the Commission located at 7 World
Trade Center, 13th Floor, Suite 1300, New York, New York 10048 and Suite 1400,
Citicorp Center, 14th Floor, 500 West Madison Street, Chicago, Illinois 60661.
Copies of such material can also be obtained at prescribed rates by writing to
the Public Reference Section of the Commission at 450 Fifth Street, N.W.,
Washington, D.C. 20549. Such information may also be accessed electronically
by means of the Commission's home page on the Internet (http://www.sec.gov.).
In addition, such reports, proxy statements and other information concerning
FBS can be inspected at the offices of the New York Stock Exchange, Inc., 20
Broad Street, New York, New York 10005 on which exchange securities of FBS are
listed.
   
  No separate financial statements of the Trust have been included herein. FBS
and the Trust do not consider that such financial statements would be material
to holders of the Capital Securities because the Trust is a newly formed
special purpose entity, has no operating history or independent operations and
is not engaged in and does not propose to engage in any activity other than
holding as trust assets the Junior Subordinated Debentures and issuing the
Trust Securities. See "FBS Capital I" and "Description of the New Securities."
In addition, FBS does not expect that the Trust will file reports under the
Exchange Act with the Commission.     
   
  This Prospectus constitutes a part of a registration statement on Form S-4
(the "Registration Statement") filed by FBS and the Trust with the Commission
under the Securities Act. This Prospectus does not contain all the information
set forth in the Registration Statement, certain parts of which are omitted in
accordance with the rules and regulations of the Commission, and reference is
hereby made to the Registration Statement and to the exhibits relating thereto
for further information with respect to FBS and the New Securities. Any
statements contained herein concerning the provisions of any document are not
necessarily complete, and, in each instance, reference is made to the copy of
such document filed as an exhibit to the Registration Statement or otherwise
filed with the Commission. Each such statement is qualified in its entirety by
such reference.     
 
                INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE
 
  The following documents filed by FBS with the Commission are incorporated
into this Prospectus by reference:
 
    1. FBS's Annual Report on Form 10-K for the year ended December 31, 1995;
 
    2. FBS's Quarterly Reports on Form 10-Q for the quarters ended March 31,
  1996, June 30, 1996 and September 30, 1996; and
 
    3. FBS's Current Reports on Form 8-K dated January 9, 1996, January 19,
  1996 and January 29, 1996.
 
  Each document or report filed by FBS pursuant to Section 13(a), 13(c), 14 or
15(d) of the Exchange Act after the date hereof and prior to the termination
of any offering of securities made by this Prospectus shall be deemed to be
incorporated by reference into this Prospectus and to be a part of this
Prospectus from the date of filing of such document. Any statement contained
herein, or in a document all or a portion of which is incorporated or deemed
to be incorporated by reference herein, shall be deemed to be modified or
superseded for purposes of this Prospectus to the extent that a statement
contained herein or in any other subsequently filed document which also is or
is deemed to be incorporated by reference herein modifies or supersedes such
statement. Any such statement so modified or superseded shall not be deemed,
except as so modified or superseded, to constitute a part of this Prospectus.
 
  As used herein, the terms "Prospectus" and "herein" mean this Prospectus,
including the documents incorporated or deemed to be incorporated herein by
reference, as the same may be amended, supplemented or
 
                                       8
<PAGE>
 
otherwise modified from time to time. Statements contained in this Prospectus
as to the contents of any contract or other document referred to herein do not
purport to be complete, and where reference is made to the particular
provisions of such contract or other document, such provisions are qualified
in all respects by reference to all of the provisions of such contract or
other document. FBS will provide without charge to any person to whom this
Prospectus is delivered, on the written or oral request of such person, a copy
of any or all of the foregoing documents incorporated by reference herein
(other than exhibits not specifically incorporated by reference into the texts
of such documents). Requests for such documents should be directed to: First
Bank System, Inc., First Bank Place, 601 Second Avenue South, Minneapolis,
Minnesota 55402-4302, telephone: (612) 973-1111, Attention: John R. Danielson.
 
                                       9
<PAGE>
 
                                    SUMMARY
 
  The following summary is qualified in its entirety by, and is subject to, the
more detailed information and financial statements contained elsewhere and
incorporated by reference in this Prospectus.
 
                                 FBS CAPITAL I
 
  The Trust is a statutory business trust formed under Delaware law pursuant to
(i) the Trust Agreement executed by FBS, as Depositor, Wilmington Trust
Company, as Property Trustee and as Delaware Trustee, and the Administrative
Agents named therein, and (ii) the filing of a certificate of trust with the
Delaware Secretary of State on November 6, 1996. The Trust's business and
affairs are conducted by the Issuer Trustees: Wilmington Trust Company, as
Property Trustee and as Delaware Trustee, and three individual Administrative
Agents who are employees or officers of or affiliated with FBS. The Trust
exists for the exclusive purposes of (i) issuing and selling the Trust
Securities and effecting the Exchange Offer for the New Capital Securities,
(ii) using the proceeds from the sale of the Trust Securities to acquire the
Old Junior Subordinated Debentures issued by FBS, (iii) exchanging the Old
Junior Subordinated Debentures for the New Subordinated Debentures in the
Exchange Offer and (iv) engaging in only those other activities necessary,
advisable or incidental thereto (such as registering the transfer of the Trust
Securities). Accordingly, the New Junior Subordinated Debentures will be the
sole assets of the Trust, and payments under the New Junior Subordinated
Debentures and the Expense Agreement will be the sole revenues of the Trust.
All of the Common Securities will be owned by FBS.
 
                            FIRST BANK SYSTEM, INC.
 
  FBS is a regional bank holding company headquartered in Minneapolis,
Minnesota. FBS is comprised of nine banks, a savings association and other
financial companies with 380 offices, located primarily in the 11 states of
Minnesota, Colorado, Illinois, Montana, North Dakota, South Dakota, Wisconsin,
Iowa, Nebraska, Kansas and Wyoming. Through its subsidiaries, FBS provides
commercial and agricultural finance, consumer banking, trust, capital markets,
treasury management, investment management, data processing, leasing and
brokerage services. At September 30, 1996, FBS and its consolidated
subsidiaries had consolidated assets of $36.8 billion, consolidated deposits of
$25.0 billion and shareholders' equity of $3.2 billion. FBS has paid a regular
quarterly dividend on its Common Stock since its incorporation in 1929.
 
                               THE EXCHANGE OFFER
 
The Exchange Offer............     
                                Up to $300,000,000 aggregate Liquidation Amount
                                 of New Capital Securities are being offered in
                                 exchange for a like aggregate Liquidation
                                 Amount of Old Capital Securities. Old Capital
                                 Securities may be tendered for exchange in
                                 whole or in part in a Liquidation Amount of
                                 $100,000 (100 Capital Securities) or any inte-
                                 gral multiple of $1,000 in excess thereof. FBS
                                 and the Trust are making the Exchange Offer in
                                 order to satisfy its obligations under the
                                 Capital Securities Registration Rights Agree-
                                 ment relating to the Old Capital Securities.
                                 For a description of the procedures for
                                 tendering Old Capital Securities, see "The Ex-
                                 change Offer--Procedures for Tendering Old
                                 Capital Securities."     
 
Expiration Date...............     
                                5:00 p.m., New York City time, on        , 199
                                 (such time on such date being hereinafter
                                 called the "Expiration Date") unless the Ex-
                                 change Offer is extended by FBS and the Trust
                                 (in     
 
                                       10
<PAGE>
 
                                 which case the term "Expiration Date" shall
                                 mean the latest date and time to which the Ex-
                                 change Offer is extended). See "The Exchange
                                 Offer--Expiration Date; Extensions; Amend-
                                 ments."
Conditions to the Exchange    
 Offer........................  The Exchange Offer is subject to certain condi-
                                 tions, which may be waived by FBS and the
                                 Trust in their sole discretion. The Exchange
                                 Offer is not conditioned upon any minimum Liq-
                                 uidation Amount of Old Capital Securities be-
                                 ing tendered. See "The Exchange Offer--Condi-
                                 tions to the Exchange Offer."
 
                                FBS and the Trust reserve the right in their
                                 sole and absolute discretion, subject to ap-
                                 plicable law, at any time and from time to
                                 time, (i) to delay the acceptance of the Old
                                 Capital Securities for exchange, (ii) to ter-
                                 minate the Exchange Offer if certain specified
                                 conditions have not been satisfied, (iii) to
                                 extend the Expiration Date of the Exchange Of-
                                 fer and retain all Old Capital Securities ten-
                                 dered pursuant to the Exchange Offer, subject,
                                 however, to the right of holders of Old Capi-
                                 tal Securities to withdraw their tendered Old
                                 Capital Securities, or (iv) to waive any con-
                                 dition or otherwise amend the terms of the Ex-
                                 change Offer in any respect. See "The Exchange
                                 Offer--Expiration Date; Extensions; Amend-
                                 ments."
 
Withdrawal Rights.............  Tenders of Old Capital Securities may be with-
                                 drawn at any time on or prior to the Expira-
                                 tion Date by delivering a written notice of
                                 such withdrawal to the Exchange Agent in con-
                                 formity with certain procedures set forth be-
                                 low under "The Exchange Offer--Withdrawal
                                 Rights."
 
                              
Procedures for Tendering Old  
 Capital Securities...........  Tendering holders of Old Capital Securities
                                 must complete and sign a Letter of Transmittal
                                 in accordance with the instructions contained
                                 therein and forward the same by mail, facsim-
                                 ile or hand delivery, together with any other
                                 required documents, to the Exchange Agent, ei-
                                 ther with the Old Capital Securities to be
                                 tendered or in compliance with the specified
                                 procedures for guaranteed delivery of Old Cap-
                                 ital Securities. Certain brokers, dealers,
                                 commercial banks, trust companies and other
                                 nominees may also effect tenders by book-entry
                                 transfer. Holders of Old Capital Securities
                                 registered in the name of a broker, dealer,
                                 commercial bank, trust company or other nomi-
                                 nee are urged to contact such person promptly
                                 if they wish to tender Old Capital Securities
                                 pursuant to the Exchange Offer. See "The Ex-
                                 change Offer--Procedures for Tendering Old
                                 Capital Securities."
 
                                Letters of Transmittal and certificates repre-
                                 senting Old Capital Securities should not be
                                 sent to FBS or the Trust. Such documents
                                 should only be sent to the Exchange Agent.
                                 Questions regarding how to tender and requests
                                 for information should be directed to the Ex-
                                 change Agent. See "The Exchange Offer--Ex-
                                 change Agent."
 
                                       11
<PAGE>
 
Resales of New Capital        
 Securities...................  FBS and the Trust are making the Exchange Offer
                                 in reliance on the position of the staff of
                                 the Division of Corporation Finance of the
                                 Commission as set forth in certain
                                 interpretive letters addressed to third par-
                                 ties in other transactions. However, neither
                                 FBS nor the Trust has sought its own
                                 interpretive letter and there can be no assur-
                                 ance that the staff of the Division of Corpo-
                                 ration Finance of the Commission would make a
                                 similar determination with respect to the Ex-
                                 change Offer as it has in such interpretive
                                 letters to third parties. Based on these in-
                                 terpretations by the staff of the Division of
                                 Corporation Finance, and subject to the two
                                 immediately following sentences, FBS and the
                                 Trust believe that New Capital Securities is-
                                 sued pursuant to this Exchange Offer in ex-
                                 change for Old Capital Securities may be of-
                                 fered for resale, resold and otherwise trans-
                                 ferred by a holder thereof (other than a
                                 holder who is a broker-dealer) without further
                                 compliance with the registration and prospec-
                                 tus delivery requirements of the Securities
                                 Act, provided that such New Capital Securities
                                 are acquired in the ordinary course of such
                                 holder's business and that such holder is not
                                 participating, and has no arrangement or un-
                                 derstanding with any person to participate, in
                                 a distribution (within the meaning of the Se-
                                 curities Act) of such New Capital Securities.
                                 However, any holder of Old Capital Securities
                                 who is an "affiliate" of FBS or the Trust or
                                 who intends to participate in the Exchange Of-
                                 fer for the purpose of distributing the New
                                 Capital Securities, or any broker-dealer who
                                 purchased the Old Capital Securities from the
                                 Trust to resell pursuant to Rule 144A or any
                                 other available exemption under the Securities
                                 Act, (a) will not be able to rely on the in-
                                 terpretations of the staff of the Division of
                                 Corporation Finance of the Commission set
                                 forth in the above-mentioned interpretive let-
                                 ters, (b) will not be permitted or entitled to
                                 tender such Old Capital Securities in the Ex-
                                 change Offer and (c) must comply with the reg-
                                 istration and prospectus delivery requirements
                                 of the Securities Act in connection with any
                                 sale or other transfer of such Old Capital Se-
                                 curities unless such sale is made pursuant to
                                 an exemption from such requirements. In addi-
                                 tion, as described below, if any broker-dealer
                                 holds Old Capital Securities acquired for its
                                 own account as a result of market-making or
                                 other trading activities and exchanges such
                                 Old Capital Securities for New Capital Securi-
                                 ties, then such broker-dealer must deliver a
                                 prospectus meeting the requirements of the Se-
                                 curities Act in connection with any resales of
                                 such New Capital Securities.
 
                                Each holder of Old Capital Securities who
                                 wishes to exchange Old Capital Securities for
                                 New Capital Securities in the Exchange Offer
                                 will be required to represent that (i) it is
                                 not an "affiliate" of FBS or the Trust, (ii)
                                 any New Capital Securities to be received by
                                 it are being acquired in the ordinary course
                                 of its business, (iii) it has no arrangement
                                 or understanding with any person to partici-
                                 pate in a distribution (within the
 
                                       12
<PAGE>
 
                                    
                                 meaning of the Securities Act) of such New
                                 Capital Securities, and (iv) if such holder is
                                 not a broker-dealer, such holder is not en-
                                 gaged in, and does not intend to engage in, a
                                 distribution (within the meaning of the Secu-
                                 rities Act) of such New Capital Securities.
                                 Each broker-dealer that receives New Capital
                                 Securities for its own account pursuant to the
                                 Exchange Offer must acknowledge that it ac-
                                 quired the Old Capital Securities for its own
                                 account as the result of market-making activi-
                                 ties or other trading activities and must
                                 agree that it will deliver a prospectus meet-
                                 ing the requirements of the Securities Act in
                                 connection with any resale of such New Capital
                                 Securities. The Letter of Transmittal states
                                 that by so acknowledging and by delivering a
                                 prospectus, a broker-dealer will not be deemed
                                 to admit that it is an "underwriter" within
                                 the meaning of the Securities Act. Based on
                                 the position taken by the staff of the Divi-
                                 sion of Corporation Finance of the Commission
                                 in the interpretive letters referred to above,
                                 FBS and the Trust believe that broker-dealers
                                 who acquired Old Capital Securities for their
                                 own accounts as a result of market-making ac-
                                 tivities or other trading activities ("Partic-
                                 ipating Broker-Dealers") may fulfill their
                                 prospectus delivery requirements with respect
                                 to the New Capital Securities received upon
                                 exchange of such Old Capital Securities (other
                                 than Old Capital Securities which represent an
                                 unsold allotment from the original sale of the
                                 Old Capital Securities) with a prospectus
                                 meeting the requirements of the Securities
                                 Act, which may be the prospectus prepared for
                                 an exchange offer so long as it contains a de-
                                 scription of the plan of distribution with re-
                                 spect to the resale of such New Capital Secu-
                                 rities. Accordingly, this Prospectus, as it
                                 may be amended or supplemented from time to
                                 time, may be used by a Participating Broker-
                                 Dealer in connection with resales of New Capi-
                                 tal Securities received in exchange for Old
                                 Capital Securities where such Old Capital Se-
                                 curities were acquired by such Participating
                                 Broker-Dealer for its own account as a result
                                 of market-making or other trading activities.
                                 Subject to certain provisions set forth in the
                                 Registration Rights Agreement and to the limi-
                                 tations described below under "The Exchange
                                 Offer--Resale of New Capital Securities," the
                                 Company and the Trust have agreed that this
                                 Prospectus, as it may be amended or supple-
                                 mented from time to time, may be used by a
                                 Participating Broker-Dealer in connection with
                                 resales of such New Capital Securities for a
                                 period ending 90 days after the Expiration
                                 Date or, if earlier, when all such New Capital
                                 Securities have been disposed of by such Par-
                                 ticipating Broker-Dealer. See "Plan of Distri-
                                 bution." Any Participating Broker-Dealer who
                                 is an "affiliate" of the Company or the Trust
                                 may not rely on such interpretive letters and
                                 must comply with the registration and prospec-
                                 tus delivery requirements of the Securities
                                 Act in connection with any resale transaction.
                                 See "The Exchange Offer--Resales of New Capi-
                                 tal Securities."     
 
                                       13
<PAGE>
 
 
Exchange Agent................  The exchange agent with respect to the Exchange
                                 Offer is Wilmington Trust Company (the "Ex-
                                 change Agent"). The addresses, and telephone
                                 and facsimile numbers of the Exchange Agent
                                 are set forth in "The Exchange Offer--Exchange
                                 Agent" and in the Letter of Transmittal.
 
Use of Proceeds...............  Neither FBS nor the Trust will receive any cash
                                 proceeds from the issuance of the New Capital
                                 Securities offered hereby. See "Use of Pro-
                                 ceeds From Sale of Old Capital Securities."
   
Certain Federal Income Tax
 Consequences; ERISA
 Considerations..........          
                                Holders of Old Capital Securities should review
                                 the information set forth under "Certain Fed-
                                 eral Income Tax Consequences" and "ERISA Con-
                                 siderations" prior to tendering Old Capital
                                 Securities in the Exchange Offer.     
 
                           THE NEW CAPITAL SECURITIES
 
Securities Offered............     
                                Up to $300,000,000 aggregate Liquidation Amount
                                 of the Trust's 8.09% Capital Securities which
                                 have been registered under the Securities Act
                                 (Liquidation Amount $1,000 per Capital Securi-
                                 ty). The New Capital Securities will be issued
                                 and the Old Capital Securities were issued un-
                                 der the Trust Agreement. The New Capital Secu-
                                 rities and any Old Capital Securities which
                                 remain outstanding after consummation of the
                                 Exchange Offer will constitute a single series
                                 of Capital Securities under the Trust Agree-
                                 ment and, accordingly, will vote together as a
                                 single class for purposes of determining
                                 whether holders of the requisite percentage in
                                 outstanding Liquidation Amount thereof have
                                 taken certain actions or exercised certain
                                 rights under the Trust Agreement. See "De-
                                 scription of the New Securities--Description
                                 of Capital Securities--General." The terms of
                                 the New Capital Securities are identical in
                                 all material respects to the terms of the Old
                                 Capital Securities, except that the New Capi-
                                 tal Securities have been registered under the
                                 Securities Act and therefore are not subject
                                 to certain restrictions on transfer applicable
                                 to the Old Capital Securities and will not
                                 provide for any increase in the Distribution
                                 rate thereon. See "The Exchange Offer--Purpose
                                 of the Exchange Offer," "Description of the
                                 New Securities" and "Description of the Old
                                 Securities."     
 
Distribution Dates............  May 15 and November 15 of each year, commencing
                                 on the first such date following the original
                                 issuance of the New Capital Securities.
 
Extension Periods.............  Distributions on the New Capital Securities
                                 will be deferred for the duration of any Ex-
                                 tension Period elected by FBS with respect to
                                 the payment of interest in the Junior Subordi-
                                 nated
 
                                       14
<PAGE>
 
                                    
                                 Debentures. No Extension Period will exceed 10
                                 consecutive semi-annual periods or extend be-
                                 yond the Stated Maturity. See "Description of
                                 the New Securities--Description of Junior Sub-
                                 ordinated Debentures--Option to Extend Inter-
                                 est Payment Period" and "Certain Federal In-
                                 come Tax Consequences--Interest Income and
                                 Original Issue Discount."     
 
   
Ranking.......................  The New Capital Securities will rank pari
                                 passu, and payments thereon will be made pro
                                 rata, with the Common Securities except as de-
                                 scribed under "Description of the New Securi-
                                 ties--Description of Capital Securities--Sub-
                                 ordination of Common Securities." The Junior
                                 Subordinated Debentures will rank pari passu
                                 with all other junior subordinated debentures
                                 to be issued by FBS pursuant to the Indenture
                                 (as hereinafter defined) ("Other Debentures"),
                                 which will be issued and sold (if at all) to
                                 other trusts to be established by FBS (if
                                 any), in each case similar to the Trust
                                 ("Other Trusts"), and will be unsecured and
                                 subordinate and junior in right of payment to
                                 the extent and in the manner set forth in the
                                 Indenture to all Senior and Subordinated Debt
                                 (as defined herein). See "Description of the
                                 New Securities--Description of Junior Subordi-
                                 nated Debentures." The Guarantee will rank
                                 pari passu with all other guarantees (if any),
                                 to be issued by FBS with respect to capital
                                 securities (if any), to be issued by Other
                                 Trusts ("Other Guarantees") and will consti-
                                 tute an unsecured obligation of FBS and will
                                 rank subordinate and junior in right of pay-
                                 ment to the extent and in the manner set forth
                                 in the Guarantee Agreement to all Senior and
                                 Subordinated Debt. See "Description of the New
                                 Securities--Description of Guarantee."     
 
   
Redemption....................  The Trust Securities are subject to mandatory
                                 redemption in whole but not in part (i) at the
                                 Stated Maturity upon repayment of the Junior
                                 Subordinated Debentures, (ii) at any time con-
                                 temporaneously with the prepayment of the Ju-
                                 nior Subordinated Debentures upon the occur-
                                 rence and continuation of a Tax Event and
                                 (iii) at any time on or after November 15,
                                 2006 contemporaneously with the optional pre-
                                 payment by FBS of the Junior Subordinated De-
                                 bentures, in each case at the applicable Re-
                                 demption Price. See "Description of the New
                                 Securities--Description of Capital Securi-
                                 ties--Redemption."     
 
Rating........................  The New Capital Securities are expected to be
                                 rated "BBB+" by Standard & Poor's Ratings
                                 Services and "a2" by Moody's Investors Servic-
                                 es, Inc.
 
                              
Absence of Market for the New 
 Capital Securities...........  The New Capital Securities will be a new issue
                                 of securities for which there currently is no
                                 market. Although Goldman, Sachs & Co., Lehman
                                 Brothers Inc., Merrill Lynch, Pierce, Fenner &
                                 Smith Incorporated, Morgan Stanley & Co. In-
                                 corporated, Dain Bosworth Incorporated and
                                 Piper Jaffray Inc., the initial purchasers of
                                 the Old Capital Securities (the "Initial
                                 Purchas-
 
                                       15
<PAGE>
 
                                 ers"), have informed FBS and the Trust that
                                 they each currently intend to make a market in
                                 the New Capital Securities, they are not obli-
                                 gated to do so, and any such market making may
                                 be discontinued at any time without notice.
                                 Accordingly, there can be no assurance as to
                                 the development or liquidity of any market for
                                 the New Capital Securities. The Trust and FBS
                                 do not intend to apply for listing of the New
                                 Capital Securities on any securities exchange
                                 or for quotation through the National Associa-
                                 tion of Securities Dealers Automated Quotation
                                 System.
 
                                  RISK FACTORS
 
  Holders tendering Old Capital Securities in the Exchange Offer should
carefully consider the matters set forth under "Risk Factors."
 
 
 
 
 
  For further information regarding the New Securities, see "Description of the
New Securities."
 
                                       16
<PAGE>
 
                                 RISK FACTORS
 
  In addition to the other information in this Prospectus, the following
factors should be considered carefully in evaluating the New Capital
Securities before deciding whether to accept the Exchange Offer.
 
RANKING OF OBLIGATIONS UNDER THE GUARANTEE AND THE JUNIOR SUBORDINATED
DEBENTURES
   
  The obligations of FBS under the Guarantee issued by FBS for the benefit of
the holders of Capital Securities are unsecured and rank subordinate and
junior in right of payment to all Senior and Subordinated Debt. The
obligations of FBS under the Junior Subordinated Debentures are subordinate
and junior in right of payment to all such Senior and Subordinated Debt. At
September 30, 1996, the aggregate outstanding Senior and Subordinated Debt was
approximately $3.4 billion. Because FBS is a bank holding company, the right
of FBS to participate in any distribution of assets of any subsidiary,
including First Bank National Association, upon such subsidiary's liquidation
or reorganization or otherwise (and thus the ability of holders of the Capital
Securities to benefit indirectly from such distribution), is subject to the
prior claims of creditors of that subsidiary, except to the extent that FBS
may itself be recognized as a creditor of that subsidiary. Accordingly, the
Junior Subordinated Debentures will be effectively subordinated to all
existing and future liabilities of FBS's subsidiaries, and holders of Junior
Subordinated Debentures should look only to the assets of FBS for payments on
the Junior Subordinated Debentures. See "First Bank System, Inc." None of the
Indenture, the Guarantee Agreement or the Trust Agreement places any
limitation on the amount of secured or unsecured debt, including Senior and
Subordinated Debt, that may be incurred by FBS. See "Description of the New
Securities--Description of Guarantee--Status of the Guarantee" and "--
Description of Junior Subordinated Debentures--Subordination."     
 
  The ability of the Trust to pay amounts due on the Capital Securities is
solely dependent upon FBS making payments on the Junior Subordinated
Debentures as and when required.
 
OPTION TO EXTEND INTEREST PAYMENT PERIOD; TAX CONSEQUENCES
 
  So long as no Debenture Event of Default has occurred or is continuing, FBS
has the right under the Indenture to defer the payment of interest on the
Junior Subordinated Debentures at any time or from time to time for a period
not exceeding 10 consecutive semi-annual periods with respect to each
Extension Period, provided that no Extension Period may extend beyond the
Stated Maturity. As a consequence of any such deferral, semi-annual
Distributions on the Capital Securities by the Trust will be deferred (and the
amount of Distributions to which holders of the Capital Securities are
entitled will accumulate additional Distributions thereon at the rate of 8.09%
per annum, compounded semi-annually, but not exceeding the interest rate then
accruing on the Junior Subordinated Debentures); from the relevant payment
date for such Distributions during any such Extension Period. During any such
Extension Period, FBS may not, and may not permit any subsidiary of FBS to,
(i) declare or pay any dividends or distributions on, or redeem, purchase,
acquire, or make a liquidation payment with respect to, any of FBS's capital
stock (which includes common and preferred stock) or (ii) make any payment of
principal, interest or premium, if any, on or repay, repurchase or redeem any
debt securities of FBS (including Other Debentures) that rank pari passu with
or junior in interest to the Junior Subordinated Debentures or make any
guarantee payments with respect to any guarantee by FBS of the debt securities
of any subsidiary of FBS (including Other Guarantees) if such guarantee ranks
pari passu with or junior in interest to the Junior Subordinated Debentures
(other than (a) dividends or distributions in common stock of FBS, (b) any
declaration of a dividend in connection with the implementation of a
stockholders' rights plan, or the issuance of stock under any such plan in the
future, or the redemption or repurchase of any such rights pursuant thereto,
(c) payments under the Guarantee and (d) purchases of common stock related to
the issuance of common stock or rights under any of FBS's benefit plans for
its directors, officers or employees). Prior to the termination of any such
Extension Period, FBS may further extend such Extension Period provided that
such extension does not cause such Extension Period to exceed 10 consecutive
semi-annual periods or to extend beyond the Stated Maturity. Upon the
termination of any Extension Period and the payment of all interest
 
                                      17
<PAGE>
 
   
then accrued and unpaid on the Junior Subordinated Debentures (together with
interest thereon at the annual rate of 8.09%, compounded semi-annually, to the
extent permitted by applicable law), FBS may elect to begin a new Extension
Period subject to the above requirements. There is no limitation on the number
of times that FBS may elect to begin an Extension Period. See "Description of
the New Securities--Description of Capital Securities--Distributions" and "--
Description of Junior Subordinated Debentures--Option to Extend Interest
Payment Period."     
 
  Because FBS believes that the likelihood of its exercising its option to
defer payments of interest is remote, the Junior Subordinated Debentures will
be treated under new Treasury regulations as issued without "original issue
discount" for United States federal income tax purposes. As a result, holders
of Capital Securities will include interest in taxable income under their own
methods of accounting (i.e., cash or accrual). Under the new regulations,
however, if FBS exercises its right to defer payments of interest, the Junior
Subordinated Debentures will become original issue discount instruments and
holders of Capital Securities will be required to include their pro rata share
of original issue discount in gross income as it accrues for United States
federal income tax purposes in advance of the receipt of cash. See "Certain
Federal Income Tax Consequences--Interest Income and Original Issue Discount"
and "--Sales or Redemption of Capital Securities."
 
  Should FBS elect to exercise its right to defer payments of interest in the
future, the market price of the Capital Securities is likely to be affected. A
holder that disposes of its Capital Securities during an Extension Period,
therefore, might not receive the same return on its investment as a holder
that continues to hold its Capital Securities. In addition, as a result of the
existence of FBS's right to defer interest payments on the Junior Subordinated
Debentures, the market price of the Capital Securities (which represent
preferred beneficial interests in the Trust holding the Junior Subordinated
Debentures as its sole asset) may be more volatile than the market prices of
other securities on which original issue discount accrues that are not subject
to such deferrals.
 
TAX EVENT REDEMPTION; POSSIBLE TAX LAW CHANGES AFFECTING THE CAPITAL
SECURITIES
   
  Upon the occurrence and continuation of a Tax Event, FBS has the right to
prepay the Junior Subordinated Debentures in whole (but not in part) at the
Tax Event Prepayment Price within 90 days following the occurrence of such Tax
Event and therefore cause a mandatory redemption of the Trust Securities at
the Tax Event Redemption Price. The exercise of such right is subject to FBS
having received prior approval of the Federal Reserve to do so if then
required under applicable guidelines or policies of the Federal Reserve. See
"Description of the New Securities--Description of Capital Securities--
Redemption."     
 
  A Tax Event means the receipt by FBS and the Trust of an opinion of counsel
experienced in such matters to the effect that, as a result of any amendment
to, or change (including any announced prospective change) in, the laws (or
any regulations thereunder) of the United States or any political subdivision
or taxing authority thereof or therein, or as a result of any official
administrative pronouncement or judicial decision interpreting or applying
such laws or regulations, which amendment or change is effective or such
pronouncement or decision is announced on or after the Issue Date, there is
more than an insubstantial risk that (i) the Trust is, or will be within 90
days of the date of such opinion, subject to United States Federal income tax
with respect to income received or accrued on the Junior Subordinated
Debentures, (ii) interest payable by FBS on the Junior Subordinated Debentures
is not, or within 90 days of such opinion, will not be, deductible by FBS, in
whole or in part, for United States Federal income tax purposes, or (iii) the
Trust is, or will be within 90 days of
the date of the opinion, subject to more than a de minimis amount of other
taxes, duties or other governmental charges.
 
  On March 19, 1996, the Revenue Reconciliation Bill of 1996 (the "Bill") was
introduced. The Bill would, among other things, deny interest deductions for
interest on an instrument, issued by a corporation, that has a maximum term of
more than 20 years and that is not shown as indebtedness on the separate
balance sheet of the issuer or, where the instrument is issued to a related
party (other than a corporation), where the holder or some other related party
issues a related instrument that is not shown as indebtedness on the issuer's
consolidated balance sheet. If such provision were to apply to the Junior
Subordinated Debentures, FBS would be unable to
 
                                      18
<PAGE>
 
   
deduct interest on the Junior Subordinated Debentures. However, on March 29,
1996, the Chairmen of the Senate Finance and House Ways and Means Committees
issued a joint statement to the effect that it was their intention that the
effective date of the Bill, if adopted, will be no earlier than the date of
appropriate Congressional action. In the recently concluded session of
Congress, no such proposal was enacted. Nonetheless, there can be no assurance
that future legislative proposals will not affect the ability of FBS to deduct
interest on the Junior Subordinated Debentures. Such a change could give rise
to a Tax Event, which may permit FBS upon approval of the Federal Reserve if
then required under applicable capital guidelines or policies of the Federal
Reserve, to cause a redemption of the Trust Securities at the Tax Event
Redemption Price by electing to prepay the Junior Subordinated Debentures at
the Tax Event Prepayment Price. See "Description of the New Securities--
Description of Capital Securities--Redemption" and "--Description of Junior
Subordinated Debentures--Tax Event Prepayment." See also "Certain Federal
Income Tax Consequences--Possible Tax Law Changes."     
 
MARKET PRICES
   
  There can be no assurance as to the market prices for Capital Securities or
Junior Subordinated Debentures that may be distributed in exchange for Capital
Securities if a termination of the Trust occurs. Accordingly, the Capital
Securities that an investor may purchase whether pursuant to the offer made
hereby or in the secondary market, or the Junior Subordinated Debentures that
a holder of Capital Securities may receive in liquidation of the Trust, may
trade at a discount from the price that the investor paid to purchase the
Capital Securities offered hereby. Because holders of Capital Securities may
receive Junior Subordinated Debentures in liquidation of the Trust and because
Distributions are otherwise limited to payments on the Junior Subordinated
Debentures, prospective purchasers of Capital Securities are also making an
investment decision with regard to the Junior Subordinated Debentures and
should carefully review all the information regarding the Junior Subordinated
Debentures contained herein. See "Description of the New Securities--
Description of the Junior Subordinated Debentures."     
 
RIGHTS UNDER THE GUARANTEE
 
  Wilmington Trust Company will act as Guarantee Trustee under the Guarantee
Agreement and will hold the Guarantee for the benefit of the holders of the
Capital Securities. Wilmington Trust Company will also act as Property Trustee
and as Delaware Trustee under the Trust Agreement and as Debenture Trustee
under the Indenture. The Guarantee guarantees to the holders of the Capital
Securities the following payments, to the extent not paid by the Trust: (i)
any accumulated and unpaid Distributions required to be paid on the Capital
Securities, to the extent that the Trust has funds on hand available therefor
at such time, (ii) the applicable Redemption Price with respect to any Capital
Securities called for redemption, to the extent that the Trust has funds on
hand available therefor at such time, and (iii) upon a voluntary or
involuntary dissolution, winding-up or liquidation of the Trust (unless the
Junior Subordinated Debentures are distributed to holders of the Capital
Securities), the lesser of (a) the aggregate of the Liquidation Amount and all
accumulated and unpaid Distributions to the date of payment to the extent that
the Trust has funds on hand available therefor at such time and (b) the amount
of assets of the Trust remaining available for distribution to holders of the
Capital Securities. The holders of not less than a majority in aggregate
Liquidation Amount of the Capital Securities have the right to direct the
time, method and place of conducting any proceeding for any remedy available
to the Guarantee Trustee in respect of the Guarantee or to direct the exercise
of any trust power conferred upon the Guarantee Trustee under the Guarantee
Agreement. Any holder of the Capital Securities may institute a legal
proceeding directly against FBS to enforce its rights under the Guarantee
without first instituting a legal proceeding against the Trust, the Guarantee
Trustee or any other person or entity. If FBS were to default on its
obligation to pay amounts payable under the Junior Subordinated Debentures,
the Trust would lack funds for the payment of Distributions or amounts payable
on redemption of the Capital Securities or otherwise, and, in such event,
holders of the Capital Securities would not be able to rely upon the Guarantee
for payment of such amounts. Instead, in the event a Debenture Event of
Default shall have occurred and be continuing and such event is attributable
to the failure of FBS to pay principal of or interest on the Junior
Subordinated Debentures on the payment date on which such payment is due and
payable, then a holder of Capital Securities may institute a legal proceeding
directly against FBS for enforcement of payment to such holder of the
principal of or interest on such Junior Subordinated
 
                                      19
<PAGE>
 
   
Debentures having a principal amount equal to the aggregate Liquidation Amount
of the Capital Securities of such holder (a "Direct Action"). Notwithstanding
any payments made to a holder of Capital Securities by FBS in connection with
a Direct Action, FBS shall remain obligated to pay the principal of and
interest on the Junior Subordinated Debentures, and FBS shall be subrogated to
the rights of the holder of such Capital Securities with respect to payments
on the Capital Securities to the extent of any payments made by FBS to such
holder in any Direct Action. Except as described herein, holders of Capital
Securities will not be able to exercise directly any other remedy available to
the holders of the Junior Subordinated Debentures or assert directly any other
rights in respect of the Junior Subordinated Debentures. See "Description of
the New Securities--Description of Junior Subordinated Debentures--Enforcement
of Certain Rights of Holders of Capital Securities," "--Description of Junior
Subordinated Debentures--Debenture Events of Default" and "--Description of
Guarantee." The Trust Agreement provides that each holder of Capital
Securities by acceptance thereof agrees to the provisions of the Guarantee
Agreement and the Indenture.     
 
LIMITED VOTING RIGHTS
   
  Holders of Capital Securities will generally have limited voting rights
relating only to the modification of the Capital Securities, the dissolution,
winding-up or liquidation of the Trust, and the exercise of the Trust's rights
as holder of Junior Subordinated Debentures. Holders of Capital Securities
will not be entitled to vote to appoint, remove or replace the Property
Trustee or the Delaware Trustee, and such voting rights are vested exclusively
in the holder of the Common Securities except upon the occurrence of certain
events described herein. The Property Trustee, the Administrative Agents and
FBS may amend the Trust Agreement without the consent of holders of Capital
Securities to ensure that the Trust will be classified for United States
federal income tax purposes as a grantor trust even if such action adversely
affects the interests of such holders. See "Description of the New
Securities--Description of Capital Securities--Voting Rights; Amendment of the
Trust Agreement and --Removal of Issuer Trustees."     
 
CONSEQUENCES OF A FAILURE TO EXCHANGE OLD CAPITAL SECURITIES
 
  The Old Capital Securities have not been registered under the Securities Act
or any state securities laws and therefore may not be offered, sold or
otherwise transferred except in compliance with the registration requirements
of the Securities Act and any other applicable securities laws, or pursuant to
an exemption therefrom or in a transaction not subject thereto, and in each
case in compliance with certain other conditions and restrictions. Old Capital
Securities which remain outstanding after consummation of the Exchange Offer
will continue to bear a legend reflecting such restrictions on transfer. In
addition, upon consummation of the Exchange Offer, holders of Old Capital
Securities which remain outstanding will not be entitled to any rights to have
such Old Capital Securities registered under the Securities Act or to any
similar rights under the Registration Rights Agreement (subject to certain
limited exceptions). FBS and the Trust do not intend to register under the
Securities Act any Old Capital Securities which remain outstanding after
consummation of the Exchange Offer (subject to such limited exceptions, if
applicable).
 
  To the extent that Old Capital Securities are tendered and accepted in the
Exchange Offer, a holder's ability to sell untendered Old Capital Securities
could be adversely affected. In addition, although the Old Capital Securities
have been designated for trading in the Private Offerings, Resale and Trading
through Automatic Linkages ("PORTAL") market, to the extent that Old Capital
Securities are tendered and accepted in connection with the Exchange Offer,
any trading market for Old Capital Securities which remain outstanding after
the Exchange Offer could be adversely affected.
   
  The New Capital Securities and any Old Capital Securities which remain
outstanding after consummation of the Exchange Offer will constitute a single
series of Capital Securities under the Trust Agreement and, accordingly, will
vote together as a single class for purposes of determining whether holders of
the requisite percentage in outstanding Liquidation Amount thereof have taken
certain actions or exercised certain rights under the Trust Agreement. See
"Description of the New Securities--Description of Capital Securities--
General."     
 
                                      20
<PAGE>
 
  The Old Capital Securities provide that, if the Exchange Offer is not
consummated within 30 days of the date hereof, the Distribution rate borne by
the Old Capital Securities will increase by 0.25% per annum commencing on the
31st day after the date hereof, until the Exchange Offer is consummated. See
"Description of the Old Capital Securities." Following consummation of the
Exchange Offer, the Old Capital Securities will not be entitled to any
increase in the Distribution rate thereon. The New Capital Securities will not
be entitled to any such increase in the interest rate thereon.
 
ABSENCE OF PUBLIC MARKET
   
  The Old Capital Securities were issued to, and FBS believes are currently
owned by, a relatively small number of beneficial owners. The Old Capital
Securities have not been registered under the Securities Act and will be
subject to restrictions on transferability to the extent that they are not
exchanged for the New Capital Securities. Although the New Capital Securities
will generally be permitted to be resold or otherwise transferred by the
holders (who are not affiliates of FBS or the Trust) without compliance with
the registration requirements under the Securities Act, they will constitute a
new issue of securities with no established trading market. Capital Securities
may be transferred by the holders thereof only in blocks having a Liquidation
Amount of not less than $100,000 (100 Capital Securities). FBS and the Trust
have been advised by the Initial Purchasers that the Initial Purchasers
presently intend to make a market in the New Capital Securities. However, the
Initial Purchasers are not obligated to do so and any market-making activity
with respect to the New Capital Securities may be discontinued at any time
without notice. In addition, such market-making activity will be subject to
the limits imposed by the Securities Act and the Exchange Act and may be
limited during the Exchange Offer. Accordingly, no assurance can be given that
an active public or other market will develop for the New Capital Securities
or the Old Capital Securities or as to the liquidity of or the trading market
for the New Capital Securities or the Old Capital Securities. If an active
public market does not develop, the market price and liquidity of the New
Capital Securities may be adversely affected.     
 
  If a public trading market develops for the New Capital Securities, future
trading prices of such securities will depend on many factors, including,
among other things, prevailing interest rates, results of operations and the
market for similar securities. Depending on prevailing interest rates, the
market for similar securities and other factors, including the financial
condition of FBS, the New Capital Securities may trade at a discount.
 
  Notwithstanding the registration of the New Capital Securities in the
Exchange Offer, holders who are "affiliates" (as defined under Rule 405 of the
Securities Act) of FBS or the Trust may publicly offer for sale or resell the
New Notes only in compliance with the provisions of Rule 144 under the
Securities Act.
 
  Each broker-dealer that receives New Capital Securities for its own account
in exchange for Old Capital Securities, where such Old Capital Securities were
acquired by such broker-dealer as a result of market-making activities or
other trading activities, must acknowledge that it will deliver a prospectus
in connection with any resale of such New Capital Securities. See "Plan of
Distribution."
 
EXCHANGE OFFER PROCEDURES
 
  Issuance of the New Capital Securities in exchange for Old Capital
Securities pursuant to the Exchange Offer will be made only after a timely
receipt by the Trust of such Old Capital Securities, a properly completed and
duly executed Letter of Transmittal and all other required documents.
Therefore, holders of the Old Capital Securities desiring to tender such Old
Capital Securities in exchange for New Capital Securities should allow
sufficient time to ensure timely delivery. The Trust is under no duty to give
notification of defects or irregularities with respect to the tenders of Old
Capital Securities for exchange.
 
                                      21
<PAGE>
 
                      RATIOS OF EARNINGS TO FIXED CHARGES
 
  The following table sets forth the ratios of earnings to fixed charges of
FBS for the respective periods indicated.
<TABLE>
<CAPTION>
                                                                   NINE MONTHS
                                         YEAR ENDED DECEMBER 31,      ENDED
                                         ------------------------ SEPTEMBER 30,
                                         1991 1992 1993 1994 1995     1996
                                         ---- ---- ---- ---- ---- -------------
<S>                                      <C>  <C>  <C>  <C>  <C>  <C>
Ratio of Earnings to Fixed Charges:
  Excluding interest on deposits........ 2.12 2.71 4.06 2.68 3.11     3.62
  Including interest on deposits........ 1.21 1.33 1.67 1.56 1.80     2.07
</TABLE>
 
  For purposes of computing these ratios, earnings represent income before
income taxes and cumulative effect of changes in accounting principles and
fixed charges (excluding capitalized interest). Fixed charges, excluding
interest on deposits, include interest (other than on deposits but including
capitalized interest) and the portion deemed representative of the interest
factor of rents. Fixed charges, including interest on deposits, include all
interest (including capitalized interest) and the portion deemed
representative of the interest factor of rents.
 
              USE OF PROCEEDS FROM SALE OF OLD CAPITAL SECURITIES
 
  Neither FBS nor the Trust will receive any cash proceeds from the issuance
of the New Capital Securities offered hereby. In consideration for issuing the
New Capital Securities in exchange for Old Capital Securities as described in
this Prospectus, the Trust will receive Old Capital Securities in like
Liquidation Amount. The Old Capital Securities surrendered in exchange for the
New Capital Securities will be retired and cancelled.
   
  The net proceeds to the Trust from the offering of the Old Capital
Securities was approximately $300.0 million (before deducting expenses
associated with the offering). All of the proceeds from the sale of the Old
Capital Securities were invested by the Trust in the Old Junior Subordinated
Debentures. FBS intends that the net proceeds from the sale of the Old Junior
Subordinated Debentures will be added to its general corporate funds and will
be used for general corporate purposes. Pending such application by FBS, such
net proceeds may be temporarily invested in short-term interest bearing
securities. The Capital Securities will be eligible to qualify as Tier 1
capital under the capital guidelines of the Federal Reserve.     
 
                                      22
<PAGE>
 
                                CAPITALIZATION
 
  The following table sets forth the consolidated capitalization of FBS and
its subsidiaries as of September 30, 1996 as adjusted to give effect to the
consummation of the offering of the Old Capital Securities and the application
of the proceeds thereof. The following data should be read in conjunction with
the consolidated financial statements and notes thereto of FBS and its
subsidiaries incorporated herein by reference. See "Incorporation of Certain
Documents by Reference." The issuance of the New Capital Securities in the
Exchange Offer will have no effect on the capitalization of FBS.
 
<TABLE>
<CAPTION>
                                                             SEPTEMBER 30, 1996
                                                                AS ADJUSTED
                                                             ------------------
                                                               (IN MILLIONS)
                                                                (UNAUDITED)
<S>                                                          <C>
Deposits....................................................      $25,008
Short-term borrowings.......................................        3,941
Senior and subordinated debt (with original maturities over
 one year)..................................................        3,443
                                                                  -------
  Total debt................................................       32,392
Company-obligated mandatorily redeemable capital securities
 of FBS
 Capital I (1)..............................................          300
SHAREHOLDERS' EQUITY
Preferred stock.............................................           87
Common stock--$1.25 par value--200,000,000 shares
 authorized, 141,747,738 shares issued......................          177
Capital surplus.............................................        1,145
Retained earnings...........................................        2,170
Unrealized gains and losses on investment securities
 available for sale.........................................          (17)
Less cost of common stock in treasury--6,300,788 shares.....         (381)
                                                                  -------
  Total shareholders' equity................................        3,181
                                                                  -------
    TOTAL CAPITALIZATION....................................      $35,873
                                                                  =======
</TABLE>
- --------
(1) FBS Capital I is a wholly-owned subsidiary of FBS and holds the Junior
    Subordinated Debentures as its sole asset.
 
                               DIVIDEND HISTORY
 
  FBS has paid a regular quarterly dividend on its Common Stock since its
incorporation in 1929.
 
                                      23
<PAGE>
 
                                 FBS CAPITAL I
   
  The Trust is a statutory business trust formed under Delaware law pursuant
to (i) the Trust Agreement executed by FBS, as Depositor, Wilmington Trust
Company, as Property Trustee and as Delaware Trustee, and the Administrative
Agents named therein, and (ii) the filing of a certificate of trust with the
Delaware Secretary of State on November 6, 1996. The Trust exists for the
exclusive purposes of (i) issuing and selling the Trust Securities and
effecting the Exchange Offer for the New Capital Securities, (ii) using the
proceeds from the sale of Trust Securities to acquire the Junior Subordinated
Debentures, (iii) exchanging the Old Junior Subordinated Debentures for the
New Junior Subordinated Debentures in the Exchange Offer pursuant to the
Indenture and (iv) engaging in only those other activities necessary,
advisable or incidental thereto (such as registering the transfer of the Trust
Securities). Accordingly, the New Junior Subordinated Debentures will be the
sole assets of the Trust, and payments under the New Junior Subordinated
Debentures and the Expense Agreement will be the sole revenues of the Trust.
All of the Common Securities will be owned by FBS. The Common Securities will
rank pari passu, and payments will be made thereon pro rata, with the Capital
Securities, except that upon the occurrence and continuance of an event of
default under the Trust Agreement resulting from a Debenture Event of Default,
the rights of FBS as holder of the Common Securities to payment in respect of
Distributions and payments upon liquidation, redemption or otherwise will be
subordinated to the rights of the holders of the Capital Securities. See
"Description of the New Securities--Description of Capital Securities--
Subordination of Common Securities." FBS will acquire Common Securities in an
aggregate liquidation amount equal to 3% of the total capital of the Trust.
The Trust has a term of 31 years, but may terminate earlier as provided in the
Trust Agreement. The Trust's business and affairs are conducted by its agents,
each appointed by FBS as holder of the Common Securities. The trustees for the
Trust will be Wilmington Trust Company, as the Property Trustee (the "Property
Trustee"), and as the Delaware Trustee (the "Delaware Trustee"), and three
individual agents (the "Administrative Agents") who are employees or officers
of or affiliated with FBS (collectively, the "Issuer Trustees"). Wilmington
Trust Company, as Property Trustee, will act as sole trustee under the Trust
Agreement. Wilmington Trust Company will also act as trustee under the
Guarantee Agreement and the Indenture. See "Description of the New
Securities--Description of Guarantee" and "--Description of Junior
Subordinated Debentures." The holder of the Common Securities of the Trust, or
the holders of a majority in Liquidation Amount of the Capital Securities, if
an Event of Default under the Trust Agreement has occurred and is continuing,
will be entitled to appoint, remove or replace the Property Trustee and/or the
Delaware Trustee. In no event will the holders of the Capital Securities have
the right to vote to appoint, remove or replace the Administrative Agents;
such voting rights are vested exclusively in the holder of the Common
Securities. The duties and obligations of each Issuer Trustee are governed by
the Trust Agreement. Pursuant to the Expense Agreement and the Registration
Rights Agreements, FBS will pay all fees and expenses related to the Trust,
and the offering of the Capital Securities and the Exchange Offer and will
pay, directly or indirectly, all ongoing costs, expenses and liabilities of
the Trust. The principal executive office of the Trust is c/o First Bank
System, Inc., First Bank Place, 601 Second Avenue South, Minneapolis,
Minnesota 55402-4302, Attention: Secretary, and its telephone number is (612)
973-1111.     
 
                                      24
<PAGE>
 
                            FIRST BANK SYSTEM, INC.
 
  FBS is a regional bank holding company headquartered in Minneapolis,
Minnesota. FBS is comprised of nine banks, a savings association and other
financial companies with 380 offices, located primarily in the 11 states of
Minnesota, Colorado, Illinois, Montana, North Dakota, South Dakota, Wisconsin,
Iowa, Nebraska, Kansas and Wyoming. Through its subsidiaries, FBS provides
commercial and agricultural finance, consumer banking, trust, capital markets,
treasury management, investment management, data processing, leasing and
brokerage services. At September 30, 1996, FBS and its consolidated
subsidiaries had consolidated assets of $36.8 billion, consolidated deposits
of $25.0 billion and shareholders' equity of $3.2 billion.
 
  The subsidiary banks of FBS engage in general commercial banking business,
principally in domestic markets, and provide banking and ancillary services to
individuals, businesses, institutional organizations, governmental entities
and other financial institutions. The largest subsidiary bank, First Bank
National Association ("FBNA"), had assets of $16.9 billion at September 30,
1996.
 
  FBS is a legal entity separate and distinct from its banking and non-banking
affiliates. The principal sources of FBS' income are dividends, interest and
fees from FBNA and the other banking and non-banking affiliates. The bank
subsidiaries of FBS, including FBNA (the "Banks"), are subject to certain
restrictions imposed by federal law on any extensions of credit to, and
certain other transactions with, FBS and certain other affiliates, and on
investments in stock or other securities thereof. Such restrictions prevent
FBS and such other affiliates from borrowing from the Banks unless the loans
are secured by various types of collateral. Further, such secured loans, other
transactions and investments by any of the Banks are generally limited in
amount as to FBS and as to each of such other affiliates to 10% of such Bank's
capital and surplus and as to FBS and all of such other affiliates to an
aggregate of 20% of such Bank's capital and surplus. In addition, payment of
dividends to FBS by the subsidiary banks is subject to ongoing review by
banking regulators and is subject to various statutory limitations and in
certain circumstances requires approval by banking regulatory authorities.
 
  FBS was incorporated under Delaware law in 1929 and has functioned as a
multi-bank holding company since that time. Its principal executive offices
are located at First Bank Place, 601 Second Avenue South, Minneapolis,
Minnesota 55402-4302 (telephone (612) 973-1111). For further information
concerning FBS, see the FBS documents incorporated by reference herein as
described under "Incorporation of Certain Documents by Reference."
 
                                      25
<PAGE>
 
                              THE EXCHANGE OFFER
 
PURPOSE AND EFFECT OF THE EXCHANGE OFFER
   
  In connection with the sale of the Old Capital Securities, FBS and the Trust
entered into the Registration Rights Agreements with the Initial Purchasers,
pursuant to which FBS and the Trust agreed, among other things, to file and to
use their reasonable efforts to cause to become effective with the Commission
a registration statement with respect to the exchange of the Old Capital
Securities for capital securities with terms identical in all material
respects to the terms of the Old Capital Securities. Copies of the
Registration Rights Agreements have been filed as Exhibits to the Registration
Statement of which this Prospectus is a part.     
   
  The Exchange Offer is being made to satisfy the contractual obligations of
FBS and the Trust under the Capital Securities Registration Rights Agreement.
The form and terms of the New Capital Securities are the same as the form and
terms of the Old Capital Securities except that the New Capital Securities
have been registered under the Securities Act and therefore will not be
subject to certain restrictions on transfer applicable to the Old Capital
Securities and will not provide for any increase in the Distribution rate
thereon. In that regard, the Old Capital Securities provide, among other
things, that, if the Exchange Offer is not consummated by June 24, 1997, the
Distribution rate borne by the Old Capital Securities commencing on June 25,
1997, will increase by 0.25% per annum until the Exchange Offer is
consummated. Upon consummation of the Exchange Offer, holders of Old Capital
Securities will not be entitled to any increase in the Distribution rate
thereon or any further registration rights under the Registration Rights
Agreement, except under limited circumstances. See "Risk Factors--Consequences
of a Failure to Exchange Old Capital Securities" and "Description of the Old
Securities."     
   
  The Exchange Offer is not being made to, nor will FBS or the Trust accept
tenders for exchange from, holders of Old Capital Securities in any
jurisdiction in which the Exchange Offer or the acceptance thereof would not
be in compliance with the securities or blue sky laws of such jurisdiction.
       
  Unless the context requires otherwise, the term "holder" with respect to the
Exchange Offer means any person in whose name the Old Capital Securities are
registered on the books of the Trust or any other person who has obtained a
properly completed bond power from the registered holder, or any person whose
Old Capital Securities are held of record by The Depository Trust Company who
desires to deliver such Old Capital Securities by book-entry transfer at The
Depository Trust Company.     
 
  Pursuant to the Exchange Offer, FBS will exchange as soon as practicable
after the date hereof, the Old Guarantee for the New Guarantee and all of the
Old Junior Subordinated Debentures, of which $309,279,000 aggregate principal
amount is outstanding, for like aggregate principal of the New Junior
Subordinated Debentures. The New Guarantee and New Junior Subordinated
Debentures have been registered under the Securities Act.
 
TERMS OF THE EXCHANGE
   
  FBS and the Trust hereby offer, upon the terms and subject to the conditions
set forth in this Prospectus and in the accompanying Letter of Transmittal, to
exchange up to $300,000,000 aggregate Liquidation Amount of New Capital
Securities for a like aggregate Liquidation Amount of Old Capital Securities
properly tendered on or prior to the Expiration Date (as defined below) and
not properly withdrawn in accordance with the procedures described below. The
Trust will issue, promptly after the Expiration Date, an aggregate Liquidation
Amount of up to $300,000,000 of New Capital Securities in exchange for a like
principal amount of outstanding Old Capital Securities tendered and accepted
in connection with the Exchange Offer. Holders may tender their Old Capital
Securities in whole or in part in a Liquidation Amount of not less than
$100,000 or any integral multiple of $1,000 in excess thereof.     
 
  The Exchange Offer is not conditioned upon any minimum Liquidation Amount of
Old Capital Securities being tendered. As of the date of this Prospectus
$300,000,000 aggregate Liquidation Amount of the Old Capital Securities is
outstanding.
 
                                      26
<PAGE>
 
   
  Holders of Old Capital Securities do not have any appraisal or dissenters'
rights in connection with the Exchange Offer. Old Capital Securities which are
not tendered for or are tendered but not accepted in connection with the
Exchange Offer will remain outstanding and be entitled to the benefits of the
Trust Agreement, but will not be entitled to any further registration rights
under the Capital Securities Registration Rights Agreement, except under
limited circumstances. See "Risk Factors--Consequences of a Failure to
Exchange Old Capital Securities" and "Description of the Old Securities."     
 
  If any tendered Old Capital Securities are not accepted for exchange because
of an invalid tender, the occurrence of certain other events set forth herein
or otherwise, certificates for any such unaccepted Old Capital Securities will
be returned, without expense, to the tendering holder thereof promptly after
the Expiration Date.
 
  Holders who tender Old Capital Securities in connection with the Exchange
Offer will not be required to pay brokerage commissions or fees or, subject to
the instructions in the Letter of Transmittal, transfer taxes with respect to
the exchange of Old Capital Securities in connection with the Exchange Offer.
FBS will pay all charges and expenses, other than certain applicable taxes
described below, in connection with the Exchange Offer. See "--Fees and
Expenses."
 
  NEITHER THE BOARD OF DIRECTORS OF FBS NOR THE TRUSTEE OF THE TRUST MAKES ANY
RECOMMENDATION TO HOLDERS OF OLD CAPITAL SECURITIES AS TO WHETHER TO TENDER OR
REFRAIN FROM TENDERING ALL OR ANY PORTION OF THEIR OLD CAPITAL SECURITIES
PURSUANT TO THE EXCHANGE OFFER. IN ADDITION, NO ONE HAS BEEN AUTHORIZED TO
MAKE ANY SUCH RECOMMENDATION. HOLDERS OF OLD CAPITAL SECURITIES MUST MAKE
THEIR OWN DECISION WHETHER TO TENDER PURSUANT TO THE EXCHANGE OFFER AND, IF
SO, THE AGGREGATE AMOUNT OF OLD CAPITAL SECURITIES TO TENDER AFTER READING
THIS PROSPECTUS AND THE LETTER OF TRANSMITTAL AND CONSULTING WITH THEIR
ADVISERS, IF ANY, BASED ON THEIR OWN FINANCIAL POSITION AND REQUIREMENTS.
 
EXPIRATION DATE; EXTENSIONS; AMENDMENTS
   
  The term "Expiration Date" means 5:00 p.m., New York City time, on
          , 199  unless the Exchange Offer is extended by FBS and the Trust
(in which case the term "Expiration Date" shall mean the latest date and time
to which the Exchange Offer is extended).     
   
  FBS and the Trust expressly reserve the right in their sole and absolute
discretion, subject to applicable law, at any time and from time to time, (i)
to delay the acceptance of the Old Capital Securities for exchange, (ii) to
terminate the Exchange Offer (whether or not any Old Capital Securities have
theretofore been accepted for exchange) if FBS and the Trust determine, in
their sole and absolute discretion, that any of the events or conditions
referred to under "--Conditions to the Exchange Offer" have occurred or exist
or have not been satisfied, (iii) to extend the Expiration Date of the
Exchange Offer and retain all Old Capital Securities tendered pursuant to the
Exchange Offer, subject, however, to the right of holders of Old Capital
Securities to withdraw their tendered Old Capital Securities as described
under "--Withdrawal Rights," and (iv) to waive any condition or otherwise
amend the terms of the Exchange Offer in any respect. If the Exchange Offer is
amended in a manner determined by FBS and the Trust to constitute a material
change, or if FBS and the Trust waive a material condition of the Exchange
Offer, FBS or the Trust will promptly disclose such amendment by means of a
prospectus supplement that will be distributed to the registered holders of
the Old Capital Securities, and FBS and the Trust will extend the Exchange
Offer to the extent required by Rule 14e-1 under the Exchange Act.     
   
  Any such delay in acceptance, extension, termination or amendment will be
followed promptly by oral or written notice thereof to the Exchange Agent and
by making a public announcement thereof, and such announcement in the case of
an extension will be made no later than 9:00 a.m., New York City time, on the
next business day after the previously scheduled Expiration Date. Without
limiting the manner in which FBS or the Trust may choose to make any public
announcement and subject to applicable law, neither FBS nor the Trust shall
have any obligation to publish, advertise or otherwise communicate any such
public announcement other than by issuing a release to an appropriate news
agency.     
 
 
                                      27
<PAGE>
 
ACCEPTANCE FOR EXCHANGE AND ISSUANCE OF NEW CAPITAL SECURITIES
   
  Upon the terms and subject to the conditions of the Exchange Offer, FBS and
the Trust will exchange, and will issue to the Exchange Agent, New Capital
Securities for Old Capital Securities validly tendered and not withdrawn
(pursuant to the withdrawal rights described under "--Withdrawal Rights")
promptly after the Expiration Date.     
 
  In all cases, delivery of New Capital Securities in exchange for Old Capital
Securities tendered and accepted for exchange pursuant to the Exchange Offer
will be made only after timely receipt by the Exchange Agent of (i) Old
Capital Securities or a book-entry confirmation of a book-entry transfer of
Old Capital Securities into the Exchange Agent's account at The Depositary
Trust Company ("DTC"), (ii) the Letter of Transmittal (or facsimile thereof),
properly completed and duly executed, with any required signature guarantees,
and (iii) any other documents required by the Letter of Transmittal.
 
  The term "book-entry confirmation" means a timely confirmation of a book-
entry transfer of Old Capital Securities into the Exchange Agent's account at
DTC.
   
  Subject to the terms and conditions of the Exchange Offer, FBS and the Trust
will be deemed to have accepted for exchange, and thereby exchanged, Old
Capital Securities validly tendered and not withdrawn as, if and when FBS or
the Trust gives oral or written notice to the Exchange Agent of FBS's and the
Trust's acceptance of such Old Capital Securities for exchange pursuant to the
Exchange Offer. The Exchange Agent will act as agent for FBS and the Trust for
the purpose of receiving tenders of Old Capital Securities, Letters of
Transmittal and related documents, and as agent for tendering holders for the
purpose of receiving Old Capital Securities, Letters of Transmittal and
related documents and transmitting New Capital Securities to validly tendering
holders. Such exchange will be made promptly after the Expiration Date. If for
any reason whatsoever, acceptance for exchange or the exchange of any Old
Capital Securities tendered pursuant to the Exchange Offer is delayed (whether
before or after FBS's and the Trust's acceptance for exchange of Old Capital
Securities) or FBS or the Trust extends the Exchange Offer or is unable to
accept for exchange or exchange Old Capital Securities tendered pursuant to
the Exchange Offer, then, without prejudice to FBS or the Trust's rights set
forth herein, the Exchange Agent may, nevertheless, on behalf of FBS and the
Trust and subject to Rule 14e-1(c) under the Exchange Act, retain tendered Old
Capital Securities and such Old Capital Securities may not be withdrawn except
to the extent tendering holders are entitled to withdrawal rights as described
under "--Withdrawal Rights."     
   
  Pursuant to the Letter of Transmittal, a holder of Old Capital Securities
will warrant and agree in the Letter of Transmittal that it has full power and
authority to tender, exchange, sell, assign and transfer Old Capital
Securities, that the Trust will acquire good, marketable and unencumbered
title to the tendered Old Capital Securities, free and clear of all liens,
restrictions, charges and encumbrances, and the Old Capital Securities
tendered for exchange are not subject to any adverse claims or proxies. The
holder also will warrant and agree that it will, upon request, execute and
deliver any additional documents deemed by FBS, the Trust or the Exchange
Agent to be necessary or desirable to complete the exchange, sale, assignment,
and transfer of the Old Capital Securities tendered pursuant to the Exchange
Offer.     
 
PROCEDURES FOR TENDERING OLD CAPITAL SECURITIES
 
  Valid Tender. Except as set forth below, in order for Old Capital Securities
to be validly tendered pursuant to the Exchange Offer, a properly completed
and duly executed Letter of Transmittal (or facsimile thereof), with any
required signature guarantees and any other required documents, must be
received by the Exchange Agent at one of its addresses set forth under "--
Exchange Agent," and either (i) tendered Old Capital Securities must be
received by the Exchange Agent, or (ii) such Old Capital Securities must be
tendered pursuant to the procedures for book-entry transfer set forth below
and a book-entry confirmation must be received by the Exchange Agent, in each
case on or prior to the Expiration Date, or (iii) the guaranteed delivery
procedures set forth below must be complied with.
 
  If less than all of the Old Capital Securities are tendered, a tendering
holder should fill in the amount of Old Capital Securities being tendered in
the appropriate box on the Letter of Transmittal. The entire amount of Old
Capital Securities delivered to the Exchange Agent will be deemed to have been
tendered unless otherwise indicated.
 
                                      28
<PAGE>
 
  THE METHOD OF DELIVERY OF CERTIFICATES, THE LETTER OF TRANSMITTAL AND ALL
OTHER REQUIRED DOCUMENTS, IS AT THE OPTION AND SOLE RISK OF THE TENDERING
HOLDER, AND DELIVERY WILL BE DEEMED MADE ONLY WHEN ACTUALLY RECEIVED BY THE
EXCHANGE AGENT. IF DELIVERY IS BY MAIL, REGISTERED MAIL, RETURN RECEIPT
REQUESTED, PROPERLY INSURED, OR AN OVERNIGHT DELIVERY SERVICE IS RECOMMENDED.
IN ALL CASES, SUFFICIENT TIME SHOULD BE ALLOWED TO ENSURE TIMELY DELIVERY.
 
  Book Entry Transfer. The Exchange Agent will establish an account with
respect to the Old Capital Securities at DTC for purposes of the Exchange
Offer within two business days after the date of this Prospectus. Any
financial institution that is a participant in DTC's book-entry transfer
facility system may make a book-entry delivery of the Old Capital Securities
by causing DTC to transfer such Old Capital Securities into the Exchange
Agent's account at DTC in accordance with DTC's procedures for transfers.
However, although delivery of Old Capital Securities may be effected through
book-entry transfer into the Exchange Agent's account at DTC, the Letter of
Transmittal (or facsimile thereof), properly completed and duly executed, with
any required signature guarantees and any other required documents, must in
any case be delivered to and received by the Exchange Agent at its address set
forth under "--Exchange Agent" on or prior to the Expiration Date, or the
guaranteed delivery procedure set forth below must be complied with.
 
  DELIVERY OF DOCUMENTS TO DTC IN ACCORDANCE WITH DTC'S PROCEDURES DOES NOT
CONSTITUTE DELIVERY TO THE EXCHANGE AGENT
 
  Signature Guarantees. Certificates for the Old Capital Securities need not
be endorsed and signature guarantees on the Letter of Transmittal are
unnecessary unless (a) a certificate for the Old Capital Securities is
registered in a name other than that of the person surrendering the
certificate or (b) such registered holder completes the box entitled "Special
Issuance Instructions" or "Special Delivery Instructions" in the Letter of
Transmittal. In the case of (a) or (b) above, such certificates for Old
Capital Securities must be duly endorsed or accompanied by a properly executed
bond power, with the endorsement or signature on the bond power and on the
Letter of Transmittal guaranteed by a firm or other entity identified in Rule
17Ad-15 under the Exchange Act as an "eligible guarantor institution,"
including (as such terms are defined therein): (i) a bank; (ii) a broker,
dealer, municipal securities broker or dealer or government securities broker
or dealer; (iii) a credit union; (iv) a national securities exchange,
registered securities association or clearing agency; or (v) a savings
association that is a participant in a Securities Transfer Association (an
"Eligible Institution"), unless surrendered on behalf of such Eligible
Institution. See Instruction 1 to the Letter of Transmittal.
 
  Guaranteed Delivery. If a holder desires to tender Old Capital Securities
pursuant to the Exchange Offer and the certificates for such Old Capital
Securities are not immediately available or time will not permit all required
documents to reach the Exchange Agent on or before the Expiration Date, or the
procedures for book-entry transfer cannot be completed on a timely basis, such
Old Capital Securities may nevertheless be tendered, provided that all of the
following guaranteed delivery procedures are complied with:
 
    (i) such tenders are made by or through an Eligible Institution;
 
    (ii) a properly completed and duly executed Notice of Guaranteed
  Delivery, substantially in the form accompanying the Letter of Transmittal,
  is received by the Exchange Agent, as provided below, on or prior to
  Expiration Date; and
 
    (iii) the certificates (or a book-entry confirmation) representing all
  tendered Old Capital Securities, in proper form for transfer, together with
  a properly completed and duly executed Letter of Transmittal (or facsimile
  thereof), with any required signature guarantees and any other documents
  required by the Letter of Transmittal, are received by the Exchange Agent
  within five New York Stock Exchange trading days after the date of
  execution of such Notice of Guaranteed Delivery.
 
  The Notice of Guaranteed Delivery may be delivered by hand, or transmitted
by facsimile or mail to the Exchange Agent and must include a guarantee by an
Eligible Institution in the form set forth in such notice.
 
                                      29
<PAGE>
 
  Notwithstanding any other provision hereof, the delivery of New Capital
Securities in exchange for Old Capital Securities tendered and accepted for
exchange pursuant to the Exchange Offer will in all cases be made only after
timely receipt by the Exchange Agent of Old Capital Securities, or of a book-
entry confirmation with respect to such Old Capital Securities, and a properly
completed and duly executed Letter of Transmittal (or facsimile thereof),
together with any required signature guarantees and any other documents
required by the Letter of Transmittal. Accordingly, the delivery of New
Capital Securities might not be made to all tendering holders at the same
time, and will depend upon when Old Capital Securities, book-entry
confirmations with respect to Old Capital Securities and other required
documents are received by the Exchange Agent.
   
  The acceptance by FBS and the Trust for exchange of Old Capital Securities
tendered pursuant to any of the procedures described above will constitute a
binding agreement between the tendering holder, FBS and the Trust upon the
terms and subject to the conditions of the Exchange Offer.     
   
  Determination of Validity. All questions as to the form of documents,
validity, eligibility (including time of receipt) and acceptance for exchange
of any tendered Old Capital Securities will be determined by the Trust, in its
sole discretion, whose determination shall be final and binding on all
parties. FBS and the Trust reserve the absolute right, in their sole and
absolute discretion, to reject any and all tenders determined by them not to
be in proper form or the acceptance of which, or exchange for, may, in the
view of counsel to FBS and the Trust, be unlawful. FBS and the Trust also
reserve the absolute right, subject to applicable law, to waive any of the
conditions of the Exchange Offer as set forth under "--Conditions to the
Exchange Offer" or any condition or irregularity in any tender of Old Capital
Securities of any particular holder whether or not similar conditions or
irregularities are waived in the case of other holders.     
   
  FBS and the Trust's interpretation of the terms and conditions of the
Exchange Offer (including the Letter of Transmittal and the instructions
thereto) will be final and binding. No tender of Old Capital Securities will
be deemed to have been validly made until all irregularities with respect to
such tender have been cured or waived. Neither FBS, the Trust, any affiliates
or assigns of FBS, the Trust, the Exchange Agent nor any other person shall be
under any duty to give any notification of any irregularities in tenders or
incur any liability for failure to give any such notification.     
   
  If any Letter of Transmittal, endorsement, bond power, power of attorney, or
any other document required by the Letter of Transmittal is signed by a
trustee, executor, administrator, guardian, attorney-in-fact, officer of a
corporation or other person acting in a fiduciary or representative capacity,
such person should so indicate when signing, and unless waived by FBS or the
Trust, proper evidence satisfactory to FBS or the Trust, in its sole
discretion, of such person's authority to so act must be submitted.     
 
  A beneficial owner of Old Capital Securities that are held by or registered
in the name of a broker, dealer, commercial bank, trust company or other
nominee or custodian is urged to contact such entity promptly if such
beneficial holder wishes to participate in the Exchange Offer.
 
RESALES OF NEW CAPITAL SECURITIES
   
  FBS and the Trust are making the Exchange Offer for the Capital Securities
in reliance on the position of the staff of the Division of Corporation
Finance of the Commission as set forth in certain interpretive letters
addressed to third parties in other transactions. However, neither FBS nor the
Trust sought its own interpretive letter and there can be no assurance that
the staff of the Division of Corporation Finance of the Commission would make
a similar determination with respect to the Exchange Offer as it has in such
interpretive letters to third parties. Based on these interpretations by the
staff of the Division of Corporation Finance, and subject to the two
immediately following sentences, FBS and the Trust believe that New Capital
Securities issued pursuant to this Exchange Offer in exchange for Old Capital
Securities may be offered for resale, resold and otherwise transferred by a
holder thereof (other than a holder who is a broker-dealer) without further
compliance with the registration and prospectus delivery requirements of the
Securities Act, provided that such New Capital Securities are acquired in the
ordinary course of such holder's business and that such holder is not
participating, and has no     
 
                                      30
<PAGE>
 
arrangement or understanding with any person to participate, in a distribution
(within the meaning of the Securities Act) of such New Capital Securities.
However, any holder of Old Capital Securities who is an "affiliate" of FBS or
the Trust or who intends to participate in the Exchange Offer for the purpose
of distributing New Capital Securities, or any broker-dealer who purchased Old
Capital Securities from the Trust to resell pursuant to Rule 144A or any other
available exemption under the Securities Act, (a) will not be able to rely on
the interpretations of the staff of the Division of Corporation Finance of the
Commission set forth in the above-mentioned interpretive letters, (b) will not
be permitted or entitled to tender such Old Capital Securities in the Exchange
Offer and (c) must comply with the registration and prospectus delivery
requirements of the Securities Act in connection with any sale or other
transfer of such Old Capital Securities unless such sale is made pursuant to
an exemption from such requirements. In addition, as described below, if any
broker-dealer holds Old Capital Securities acquired for its own account as a
result of market-making or other trading activities and exchanges such Old
Capital Securities for New Capital Securities, then such broker-dealer must
deliver a prospectus meeting the requirements of the Securities Act in
connection with any resales of such New Capital Securities.
   
  Each holder of Old Capital Securities who wishes to exchange Old Capital
Securities for New Capital Securities in the Exchange Offer will be required
to represent that (i) it is not an "affiliate" of FBS or the Trust, (ii) any
New Capital Securities to be received by it are being acquired in the ordinary
course of its business, (iii) it has no arrangement or understanding with any
person to participate in a distribution (within the meaning of the Securities
Act) of such New Capital Securities, and (iv) if such holder is not a broker-
dealer, such holder is not engaged in, and does not intend to engage in, a
distribution (within the meaning of the Securities Act) of such New Capital
Securities. In addition, FBS and the Trust may require such holder, as a
condition to such holder's eligibility to participate in the Exchange Offer,
to furnish to FBS and the Trust (or an agent thereof) in writing information
as to the number of "beneficial owners" (within the meaning of Rule 13d-3
under the Exchange Act) on behalf of whom such holder holds the Capital
Securities to be exchanged in the Exchange Offer. Each broker-dealer that
receives New Capital Securities for its own account pursuant to the Exchange
Offer must acknowledge that it acquired the Old Capital Securities for its own
account as the result of market-making activities or other trading activities
and must agree that it will deliver a prospectus meeting the requirements of
the Securities Act in connection with any resale of such New Capital
Securities. The Letter of Transmittal states that by so acknowledging and by
delivering a prospectus, a broker-dealer will not be deemed to admit that it
is an "underwriter" within the meaning of the Securities Act. Based on the
position taken by the staff of the Division of Corporation Finance of the
Commission in the interpretive letters referred to above, FBS and the Trust
believe that broker-dealers who acquired Old Capital Securities for their own
accounts as a result of market-making activities or other trading activities
("Participating Broker-Dealers") may fulfill their prospectus delivery
requirements with respect to the New Capital Securities received upon exchange
of such Old Capital Securities (other than Old Capital Securities which
represent an unsold allotment from the original sale of the Old Capital
Securities) with a prospectus meeting the requirements of the Securities Act,
which may be the prospectus prepared for an exchange offer so long as it
contains a description of the plan of distribution with respect to the resale
of such New Capital Securities. Accordingly, this Prospectus, as it may be
amended or supplemented from time to time, may be used by a Participating
Broker-Dealer during the period referred to below in connection with resales
of New Capital Securities received in exchange for Old Capital Securities
where such Old Capital Securities were acquired by such Participating Broker-
Dealer for its own account as a result of market-making or other trading
activities. Subject to certain provisions set forth in the Capital Securities
Registration Rights Agreement, FBS and the Trust have agreed that this
Prospectus, as it may be amended or supplemented from time to time, may be
used by a Participating Broker-Dealer in connection with resales of such New
Capital Securities for a period ending 90 days after the Expiration Date or,
if earlier, when all such New Capital Securities have been disposed of by such
Participating Broker-Dealer. See "Plan of Distribution." Any Participating
Broker-Dealer who is an "affiliate" of FBS or the Trust may not rely on such
interpretive letters and must comply with the registration and prospectus
delivery requirements of the Securities Act in connection with any resale
transaction.     
 
  In that regard, each Participating Broker-Dealer who surrenders Old Capital
Securities pursuant to the Exchange Offer will be deemed to have agreed, by
execution of the Letter of Transmittal, that, upon receipt of notice from FBS
or the Trust of the occurrence of any event or the discovery of any fact which
makes any
 
                                      31
<PAGE>
 
   
statement contained or incorporated by reference in this Prospectus untrue in
any material respect or which causes this Prospectus to omit to state a
material fact necessary in order to make the statements contained or
incorporated by reference herein, in light of the circumstances under which
they were made, not misleading or of the occurrence of certain other events
specified in the Registration Rights Agreements, such Participating Broker-
Dealer will suspend the sale of New Capital Securities (or the New Guarantee
or the New Junior Subordinated Debentures, as applicable) pursuant to this
Prospectus until FBS or the Trust has amended or supplemented this Prospectus
to correct such misstatement or omission and has furnished copies of the
amended or supplemented Prospectus to such Participating Broker-Dealer or FBS
or the Trust has given notice that the sale of the New Capital Securities (or
the New Guarantee or the New Junior Subordinated Debentures, as applicable)
may be resumed, as the case may be.     
 
WITHDRAWAL RIGHTS
 
  Except as otherwise provided herein, tenders of Old Capital Securities may
be withdrawn at any time on or prior to the Expiration Date.
 
  In order for a withdrawal to be effective a written, telegraphic, telex or
facsimile transmission of such notice of withdrawal must be timely received by
the Exchange Agent at one of its addresses set forth under "--Exchange Agent"
on or prior to the Expiration Date. Any such notice of withdrawal must specify
the name of the person who tendered the Old Capital Securities to be
withdrawn, the aggregate principal amount of Old Capital Securities to be
withdrawn, and (if certificates for such Old Capital Securities have been
tendered) the name of the registered holder of the Old Capital Securities as
set forth on the Old Capital Securities, if different from that of the person
who tendered such Old Capital Securities. If Old Capital Securities have been
delivered or otherwise identified to the Exchange Agent, then prior to the
physical release of such Old Capital Securities, the tendering holder must
submit the serial numbers shown on the particular Old Capital Securities to be
withdrawn and the signature on the notice of withdrawal must be guaranteed by
an Eligible Institution, except in the case of Old Capital Securities tendered
for the account of an Eligible Institution. If Old Capital Securities have
been tendered pursuant to the procedures for book-entry transfer set forth in
"--Procedures for Tendering Old Capital Securities," the notice of withdrawal
must specify the name and number of the account at DTC to be credited with the
withdrawal of Old Capital Securities, in which case a notice of withdrawal
will be effective if delivered to the Exchange Agent by written, telegraphic,
telex or facsimile transmission. Withdrawals of tenders of Old Capital
Securities may not be rescinded. Old Capital Securities properly withdrawn
will not be deemed validly tendered for purposes of the Exchange Offer, but
may be retendered at any subsequent time on or prior to the Expiration Date by
following any of the procedures described above under "--Procedures for
Tendering Old Capital Securities."
   
  All questions as to the validity, form and eligibility (including time of
receipt) of such withdrawal notices will be determined by FBS and the Trust,
in their sole discretion, whose determination shall be final and binding on
all parties. Neither FBS, the Trust, any affiliates or assigns of FBS, the
Trust, the Exchange Agent nor any other person shall be under any duty to give
any notification of any irregularities in any notice of withdrawal or incur
any liability for failure to give any such notification. Any Old Capital
Securities which have been tendered but which are withdrawn will be returned
to the holder thereof promptly after withdrawal.     
 
DISTRIBUTIONS ON THE NEW CAPITAL SECURITIES
   
  Holders of Old Capital Securities whose Old Capital Securities are accepted
for exchange will not receive accumulated Distributions on such Old Capital
Securities for any period from and after the last Distribution Date with
respect to such Old Capital Securities prior to the original issue date of the
New Capital Securities or, if no such Distributions have been made, will not
receive any accumulated Distributions on such Old Capital Securities, and will
be deemed to have waived the right to receive any Distributions on such Old
Capital Securities accumulated from and after such Distribution Date or, if no
such Distributions have been made, from and after November 15, 1996. However,
because Distributions on the New Capital Securities will accumulate from
November 15, 1996, the amount of the Distributions received by holders whose
Old Capital Securities are accepted for exchange will not be affected by the
exchange.     
 
CONDITIONS TO THE EXCHANGE OFFER
 
  Notwithstanding any other provisions of the Exchange Offer, or any extension
of the Exchange Offer, the Trust will not be required to accept for exchange,
or to exchange, any Old Capital Securities for any New Capital
 
                                      32
<PAGE>
 
Securities, and, as described below, may terminate the Exchange Offer (whether
or not any Old Capital Securities have theretofore been accepted for exchange)
or may waive any conditions to or amend the Exchange Offer, if any of the
following conditions have occurred or exists or have not been satisfied:
 
    (a) there shall occur a change in the current interpretation by the staff
  of the Commission which permits the New Capital Securities issued pursuant
  to the Exchange Offer in exchange for Old Capital Securities to be offered
  for resale, resold and otherwise transferred by holders thereof (other than
  broker-dealers and any such holder which is an "affiliate" of FBS or the
  Trust within the meaning of Rule 405 under the Securities Act) without
  compliance with the registration and prospectus delivery provisions of the
  Securities Act provided that such New Capital Securities are acquired in
  the ordinary course of such holders' business and such holders have no
  arrangement or understanding with any person to participate in the
  distribution of such New Capital Securities; or
     
    (b) any action or proceeding shall have been instituted or threatened in
  any court or by or before any governmental agency or body with respect to
  the Exchange Offer which, in FBS's and the Trust's judgment, would
  reasonably be expected to impair the ability of FBS or the Trust to proceed
  with the Exchange Offer;     
     
    (c) any law, statute, rule or regulation shall have been adopted or
  enacted which, in FBS's and the Trust's judgment, would reasonably be
  expected to impair the ability of FBS or the Trust to proceed with the
  Exchange Offer;     
     
    (d) a banking moratorium shall have been declared by United States
  federal or Minnesota or New York State authorities which, in FBS's and the
  Trust's judgment, would reasonably be expected to impair the ability of FBS
  or the Trust to proceed with the Exchange Offer;     
     
    (e) trading on the New York Stock Exchange or generally in the United
  States over-the-counter market shall have been suspended by order of the
  Commission or any other governmental authority which, in FBS's and the
  Trust's judgment, would reasonably be expected to impair the ability of FBS
  or the Trust to proceed with the Exchange Offer; or     
     
    (f) a stop order shall have been issued by the Commission or any state
  securities authority suspending the effectiveness of the Registration
  Statement or proceedings shall have been initiated or, to the knowledge of
  FBS or the Trust, threatened for that purpose; or     
     
    (g) any change, or any development involving a prospective change, in the
  business or financial affairs of FBS or the Trust or any of their
  subsidiaries have occurred which, in the sole judgment of FBS and the
  Trust, might materially impair the ability of FBS or the Trust to proceed
  with the Exchange Offer.     
   
  If FBS and the Trust determine in their sole and absolute discretion that
any of the foregoing events or conditions has occurred or exists or has not
been satisfied, FBS and the Trust may, subject to applicable law, terminate
the Exchange Offer (whether or not any Old Capital Securities have theretofore
been accepted for exchange) or may waive any such condition or otherwise amend
the terms of the Exchange Offer in any respect. If such waiver or amendment
constitutes a material change to the Exchange Offer, FBS and the Trust will
promptly disclose such waiver by means of a prospectus supplement that will be
distributed to the registered holders of the Old Capital Securities, and FBS
and the Trust will extend the Exchange Offer to the extent required by Rule
14e-1 under the Exchange Act.     
 
EXCHANGE AGENT
 
  Wilmington Trust Company, has been appointed as Exchange Agent for the
Exchange Offer. Delivery of the Letters of Transmittal and any other required
documents, questions, requests for assistance, and requests for additional
copies of this Prospectus or of the Letter of Transmittal should be directed
to the Exchange Agent as follows:
 
                            Wilmington Trust Company
                               
                            Corporate Trust Operation     
                               
                            Rodney Square North     
                               
                            1100 North Market Street     
                               
                            Wilmington, Delaware 19890-0001     
                                      
                            Attention: Jill Rylee     
                               
                            Telephone: (302) 651-8867     
                               
                            Facsimile: (302) 651-1079     
 
                                      33
<PAGE>
 
  Delivery to other than the above addresses or facsimile number will not
constitute a valid delivery.
 
FEES AND EXPENSES
 
  FBS has agreed to pay the Exchange Agent reasonable and customary fees for
its services and will reimburse it for its reasonable out-of-pocket expenses
in connection therewith. FBS will also pay brokerage houses and other
custodians, nominees and fiduciaries the reasonable out-of-pocket expenses
incurred by them in forwarding copies of this Prospectus and related documents
to the beneficial owners of Old Capital Securities, and in handling or
tendering for their customers.
 
  Holders who tender their Old Capital Securities for exchange will not be
obligated to pay any transfer taxes in connection therewith. If, however, New
Capital Securities are to be delivered to, or are to be issued in the name of,
any person other than the registered holder of the Old Capital Securities
tendered, or if a transfer tax is imposed for any reason other than the
exchange of Old Capital Securities in connection with the Exchange Offer, then
the amount of any such transfer taxes (whether imposed on the registered
holder or any other persons) will be payable by the tendering holder. If
satisfactory evidence of payment of such taxes or exemption therefrom is not
submitted with the Letter of Transmittal, the amount of such transfer taxes
will be billed directly to such tendering holder.
 
  Neither FBS nor the Trust will make any payment to brokers, dealers or
others soliciting acceptances of the Exchange Offer.
                       
                    DESCRIPTION OF THE NEW SECURITIES     
 
                       DESCRIPTION OF CAPITAL SECURITIES
 
  Pursuant to the terms of the Trust Agreement, the Issuer Trustees have
issued the Old Capital Securities and the Common Securities and will issue the
New Capital Securities. The New Capital Securities will represent preferred
beneficial interests in the Trust and the holders thereof will be entitled to
a preference in certain circumstances with respect to Distributions and
amounts payable on redemption of the Trust Securities or liquidation of the
Trust over the Common Securities. See "--Subordination of Common Securities."
The Trust Agreement has been qualified under the Trust Indenture Act of 1939,
as amended (the "Trust Indenture Act"). This summary of certain provisions of
the Capital Securities, the Common Securities and the Trust Agreement does not
purport to be complete and is subject to, and is qualified in its entirety by
reference to, all the provisions of the Trust Agreement, including the
definitions therein of certain terms.
 
GENERAL
 
  The Capital Securities (including the Old Capital Securities and the New
Capital Securities) will be limited to $300,000,000 aggregate Liquidation
Amount at any one time outstanding. The Capital Securities will rank pari
passu, and payments will be made thereon pro rata, with the Common Securities
except as described under "--Subordination of Common Securities." Legal title
to the Junior Subordinated Debentures will be held by the Property Trustee in
trust for the benefit of the holders of the Capital Securities and Common
Securities. The Guarantee executed by FBS for the benefit of the holders of
the Capital Securities (the "Guarantee") will be a guarantee on a subordinated
basis but will not guarantee payment of Distributions or amounts payable on
redemption of the Capital Securities or on liquidation of the Trust when the
Trust does not have funds on hand available to make such payments. See "--
Description of Guarantee."
 
DISTRIBUTIONS
 
  Distributions on the Capital Securities will be cumulative, will accumulate
from November 15, 1996 and will be payable at the annual rate of 8.09% of the
Liquidation Amount, and will be payable semi-annually in
 
                                      34
<PAGE>
 
arrears on May 15 and November 15 of each year, commencing May 15, 1997. The
record dates will be the preceding April 30 and October 31, respectively. The
amount of Distributions payable for any period will be computed on the basis
of a 360-day year of twelve 30-day months. In the event that any date on which
Distributions are payable on the Capital Securities is not a Business Day (as
defined below), payment of the Distribution payable on such date will be made
on the next succeeding day that is a Business Day (and without any interest or
other payment in respect to any such delay) except that, if such Business Day
is in the next succeeding calendar year, payment of such Distribution shall be
made on the immediately preceding Business Day, in each case with the same
force and effect as if made on such date (each date on which Distributions are
payable in accordance with the foregoing, a "Distribution Date"). A "Business
Day" shall mean any day other than a Saturday or a Sunday, or a day on which
banking institutions in The City of New York are authorized or required by law
or executive order to remain closed or a day on which the corporate trust
office of the Property Trustee or the Debenture Trustee is closed for
business.
 
  So long as no Debenture Event of Default has occurred and is continuing, FBS
has the right under the Indenture to defer the payment of interest on the
Junior Subordinated Debentures at any time or from time to time for a period
not exceeding 10 consecutive semi-annual periods with respect to each
Extension Period, provided that no Extension Period may extend beyond the
Stated Maturity. As a consequence of any such election, semi-annual
Distributions on the Capital Securities will be deferred by the Trust during
any such Extension Period. Distributions to which holders of the Capital
Securities are entitled will accumulate additional Distributions thereon at
the rate per annum of 8.09% thereof, compounded semi-annually from the
relevant Distribution Date, but not exceeding the interest rate then accruing
on the Junior Subordinated Debentures. The term "Distributions" as used herein
shall include any such additional Distributions. During any such Extension
Period, FBS may not, and may not permit any subsidiary of FBS to, (i) declare
or pay any dividends or distributions on, or redeem, purchase, acquire, or
make a liquidation payment with respect to, any of FBS's capital stock (which
includes common and preferred stock) or (ii) make any payment of principal,
interest or premium, if any, on or repay, repurchase or redeem any debt
securities of FBS (including Other Debentures) that rank pari passu with or
junior in interest to the Junior Subordinated Debentures or make any guarantee
payments with respect to any guarantee by FBS of the debt securities of any
subsidiary of FBS (including Other Guarantees) if such guarantee ranks pari
passu with or junior in interest to the Junior Subordinated Debentures (other
than (a) dividends or distributions in common stock of FBS, (b) any
declaration of a dividend in connection with the implementation of a
stockholders' rights plan, or the issuance of stock under any such plan in the
future, or the redemption or repurchase of any such rights pursuant thereto,
(c) payments under the Guarantee and (d) purchases of common stock related to
the issuance of common stock or rights under any of FBS's benefit plans for
its directors, officers or employees). Prior to the termination of any such
Extension Period, FBS may further extend such Extension Period, provided that
such extension does not cause such Extension Period to exceed 10 consecutive
semi-annual periods or to extend beyond the Stated Maturity. Upon the
termination of any such Extension Period and the payment of all amounts then
due, and subject to the foregoing limitations, FBS may elect to begin a new
Extension Period. FBS must give the Property Trustee, the Administrative
Agents and the Debenture Trustee notice of its election of any such Extension
Period at least five Business Days prior to the earlier of (i) the date the
Distributions on the Capital Securities would have been payable except for the
election to begin such Extension Period or (ii) the date the Administrative
Agents are required to give notice to any automated quotation system or to
holders of such Capital Securities of the record date or the date such
Distributions are payable but in any event not less than five Business Days
prior to such record date. There is no limitation on the number of times that
FBS may elect to begin an Extension Period. See "--Description of Junior
Subordinated Debentures--Option to Extend Interest Payment Period" and
"Certain Federal Income Tax Consequences--Interest Income and Original Issue
Discount."
 
  FBS believes that the likelihood of it exercising its right to defer
payments of interest on the Junior Subordinated Debentures is remote.
 
  The revenue of the Trust available for distribution to holders of the
Capital Securities will be limited to payments under the Junior Subordinated
Debentures in which the the Trust will invest the proceeds from the
 
                                      35
<PAGE>
 
issuance and sale of the Trust Securities. See "--Description of Junior
Subordinated Debentures--General." If FBS does not make interest payments on
the Junior Subordinated Debentures, the Property Trustee will not have funds
available to pay Distributions on the Capital Securities. The payment of
Distributions (if and to the extent the Trust has funds legally available for
the payment of such Distributions and cash sufficient to make such payments)
is guaranteed by FBS on a limited basis as set forth herein under "--
Description of Guarantee."
 
REDEMPTION
   
  Upon the repayment in full at the Stated Maturity or prepayment in whole
(but not in part) of the Junior Subordinated Debentures, the proceeds from
such repayment or prepayment shall be applied by the Property Trustee to
redeem the Trust Securities, upon not less than 30 nor more than 60 days'
notice of a date of redemption (the "Redemption Date"), at the applicable
Redemption Price, which shall be equal to (i) in the case of the repayment of
the Junior Subordinated Debentures at the Stated Maturity, the Maturity
Redemption Price (equal to the principal of, and accrued interest on, the
Junior Subordinated Debentures), (ii) in the case of the prepayment of the
Junior Subordinated Debentures upon the occurrence and continuation of a Tax
Event, the Tax Event Redemption Price (equal to the Tax Event Prepayment Price
in respect of the Junior Subordinated Debentures) and (iii) in the case of the
optional prepayment of the Junior Subordinated Debentures, the Optional
Redemption Price (equal to the Optional Prepayment Price in respect of the
Junior Subordinated Debentures). See "--Description of Junior Subordinated
Debentures--Optional Prepayment;--Tax Event Prepayment."     
   
  FBS will have the right to prepay the Junior Subordinated Debentures in
whole (but not in part) (i) on or after November 15, 2006, at any time at the
applicable Optional Prepayment Price (as defined under "--Description of
Junior Subordinated Debentures--Optional Prepayment"), and (ii) at any time,
upon the occurrence of a Tax Event, at the Tax Event Prepayment Price (as
defined under "--Description of Junior Subordinated Debentures--Tax Event
Prepayment"), in each case subject to receipt of prior approval by the Federal
Reserve if then required under applicable capital guidelines or policies of
the Federal Reserve.     
 
LIQUIDATION OF THE TRUST AND DISTRIBUTION OF JUNIOR SUBORDINATED DEBENTURES
 
  FBS will have the right at any time to terminate the Trust and cause the
Junior Subordinated Debentures to be distributed to the holders of the Trust
Securities in liquidation of the Trust. Such right is subject to FBS having
received an opinion of counsel to the effect that such distribution will not
be a taxable event to holders of Capital Securities and prior approval of the
Federal Reserve if then required under applicable capital guidelines or
policies of the Federal Reserve.
 
  The Trust shall automatically terminate upon the first to occur of: (i)
certain events of bankruptcy, dissolution or liquidation of FBS; (ii) the
distribution of a Like Amount (as defined below) of the Junior Subordinated
Debentures to the holders of the Trust Securities, if FBS, as Depositor, has
given written direction to the Property Trustee to terminate the Trust (which
direction is optional and, except as described above, wholly within the
discretion of FBS, as Depositor); (iii) redemption of all of the Trust
Securities as described under "--Redemption"; (iv) expiration of the term of
the Trust; and (v) the entry of an order for the dissolution of the Trust by a
court of competent jurisdiction.
 
  If an early termination occurs as described in clause (i), (ii) (iv), or (v)
above, the Trust shall be liquidated by the Issuer Trustees as expeditiously
as the Issuer Trustees determine to be possible by distributing, after
satisfaction of liabilities to creditors of the Trust as provided by
applicable law, to the holders of the Trust Securities a Like Amount of the
Junior Subordinated Debentures, unless such distribution is determined by the
Property Trustee not to be practical, in which event such holders will be
entitled to receive out of the assets of the Trust available for distribution
to holders, after satisfaction of liabilities to creditors of the Trust as
provided by applicable law, an amount equal to, the aggregate of the
Liquidation Amount plus accrued and unpaid Distributions thereon to the date
of payment (such amount being the "Liquidation Distribution"). If such
Liquidation Distribution can be paid only in part because the Trust has
insufficient assets available to pay in full the aggregate Liquidation
Distribution, then the amounts payable directly by the Trust on the Capital
Securities
 
                                      36
<PAGE>
 
shall be paid on a pro rata basis. The holder(s) of the Common Securities will
be entitled to receive distributions upon any such liquidation pro rata with
the holders of the Capital Securities, except that if a Debenture Event of
Default has occurred and is continuing, the Capital Securities shall have a
priority over the Common Securities. See "--Subordination of Common
Securities." If an early termination occurs as described in clause (v) above,
the Junior Subordinated Debentures will be subject to optional prepayment in
whole (but not in part).
 
  "Like Amount" means Junior Subordinated Debentures having a principal amount
equal to the Liquidation Amount of the Trust Securities of the holder to whom
such Junior Subordinated Debentures are distributed.
 
  If FBS elects not to prepay the Junior Subordinated Debentures prior to
maturity and either elects not to or is unable to liquidate the Trust and
distribute the Junior Subordinated Debentures to holders of the Trust
Securities, the Capital Securities will remain outstanding until the repayment
of the Junior Subordinated Debentures at the Stated Maturity.
 
  After the liquidation date is fixed for any distribution of Junior
Subordinated Debentures to holders of the Trust Securities (i) the Capital
Securities will no longer be deemed to be outstanding, (ii) The Depository
Trust Company ("DTC") or its nominee, as the record holder of the Capital
Securities, will receive a registered global certificate or certificates
representing the Junior Subordinated Debentures to be delivered upon such
distribution and (iii) any certificates representing Capital Securities not
held by DTC or its nominee will be deemed to represent Junior Subordinated
Debentures having a principal amount equal to the Liquidation Amount of such
Capital Securities, and bearing accrued and unpaid interest in an amount equal
to the accrued and unpaid Distributions on such Capital Securities until such
certificates are presented to the Administrative Agents or their agent for
cancellation whereupon FBS will issue to such holder, and the Debenture
Trustee will authenticate, a certificate representing such Junior Subordinated
Debentures.
 
  There can be no assurance as to the market prices for the Capital Securities
or the Junior Subordinated Debentures that may be distributed in exchange for
the Trust Securities if a dissolution and liquidation of the Trust were to
occur. Accordingly, the Capital Securities that an investor may purchase, or
the Junior Subordinated Debentures that the investor may receive on
dissolution and liquidation of the Trust, may trade at a discount to the price
that the investor paid to purchase the Capital Securities offered hereby.
 
REDEMPTION PROCEDURES
 
  Trust Securities shall be redeemed, if at all, at the applicable Redemption
Price with the proceeds from the contemporaneous repayment or prepayment of
the Junior Subordinated Debentures. Redemptions of the Trust Securities shall
be made and the applicable Redemption Price shall be payable on the Redemption
Date only to the extent that the Trust has funds on hand available for the
payment of such applicable Redemption Price. See also "--Subordination of
Common Securities."
 
  If the Trust gives a notice of redemption in respect of the Capital
Securities, then, by 12:00 noon, New York City time, on the Redemption Date,
to the extent funds are available, with respect to the Capital Securities held
in global form, the Property Trustee will deposit irrevocably with DTC funds
sufficient to pay the applicable Redemption Price and will give DTC
irrevocable instructions and authority to pay the applicable Redemption Price
to the holders of the Capital Securities. See "--Form, Denomination, Book-
Entry Procedures and Transfer." With respect to the Capital Securities held in
certificated form, the Property Trustee, to the extent funds are available,
will irrevocably deposit with the paying agent for the Capital Securities
funds sufficient to pay the applicable Redemption Price and will give such
paying agent irrevocable instructions and authority to pay the applicable
Redemption Price to the holders thereof upon surrender of their certificates
evidencing the Capital Securities. See "--Payment and Paying Agency."
Notwithstanding the foregoing, Distributions payable on or prior to the
Redemption Date shall be payable to the holders of such Capital Securities on
the relevant record dates for the related Distribution Dates. If notice of
redemption shall have been given and funds deposited as required, then upon
the date of such deposit, all rights of the holders of the Capital Securities
will cease, except the right of the holders of the Capital Securities to
receive the applicable Redemption Price, but without interest
 
                                      37
<PAGE>
 
on such Redemption Price, and the Capital Securities will cease to be
outstanding. In the event that any date fixed for redemption of Capital
Securities is not a Business Day, then payment of the applicable Redemption
Price payable on such date will be made on the next succeeding day which is a
Business Day (and without any interest or other payment in respect of any such
delay), except that, if such Business Day falls in the next calendar year,
such payment will be made on the immediately preceding Business Day. In the
event that payment of the applicable Redemption Price is improperly withheld
or refused and not paid either by the Trust or by FBS pursuant to the
Guarantee as described under "--Description of Guarantee," Distributions on
Capital Securities will continue to accrue at the then applicable rate, from
the Redemption Date originally established by the Trust to the date such
applicable Redemption Price is actually paid, in which case the actual payment
date will be the date fixed for redemption for purposes of calculating the
applicable Redemption Price.
 
  Subject to applicable law (including, without limitation, United States
Federal securities law), FBS or its subsidiaries may at any time and from time
to time purchase outstanding Capital Securities by tender, in the open market
or by private agreement.
 
  Payment of the applicable Redemption Price on, and any distribution of
Junior Subordinated Debentures to holders of, the Trust Securities shall be
made to the applicable recordholders thereof as they appear on the register
therefor on the relevant record date, which shall be a date at least 15 days
prior to the Redemption Date or liquidation date, as applicable.
 
  Notice of any redemption will be mailed at least 30 days but not more than
60 days before the Redemption Date to each holder of Trust Securities at its
registered address. Unless FBS defaults in payment of the applicable
Prepayment Price on, or in the repayment of, the Junior Subordinated
Debentures, on and after the Redemption Date Distributions will cease to
accrue on the Trust Securities called for redemption.
 
SUBORDINATION OF COMMON SECURITIES
 
  Payment of Distributions on, and the Redemption Price of, the Capital
Securities and Common Securities, as applicable, shall be made pro rata based
on the Liquidation Amounts of the Capital Securities and Common Securities;
provided, however, that if on any Distribution Date or Redemption Date a
Debenture Event of Default shall have occurred and be continuing, no payment
of any Distribution on, or applicable Redemption Price of, any of the Common
Securities, and no other payment on account of the redemption, liquidation or
other acquisition of the Common Securities, shall be made unless payment in
full in cash of all accumulated and unpaid Distributions on all of the
outstanding Capital Securities for all Distribution periods terminating on or
prior thereto, or in the case of payment of the applicable Redemption Price
the full amount of such Redemption Price on all of the outstanding Capital
Securities, shall have been made or provided for, and all funds available to
the Property Trustee shall first be applied to the payment in full in cash of
all Distributions on, or Redemption Price of, the Capital Securities then due
and payable.
 
  In the case of any Event of Default under the Trust Agreement resulting from
a Debenture Event of Default, FBS as holder of the Common Securities will be
deemed to have waived any right to act with respect to any such Event of
Default until the effect of all such Events of Default have been cured, waived
or otherwise eliminated. Until any such Events of Default have been so cured,
waived or otherwise eliminated, the Property Trustee shall act solely on
behalf of the holders of the Capital Securities and not on behalf of FBS as
holder of the Common Securities, and only the holders of the Capital
Securities will have the right to direct the Property Trustee to act on their
behalf.
 
EVENTS OF DEFAULT; NOTICE
 
  Any one of the following events constitutes an "Event of Default" under the
Trust Agreement (an "Event of Default") (whatever the reason for such Event of
Default and whether it shall be voluntary or involuntary or be effected by
operation of law or pursuant to any judgment, decree or order of any court or
any order, rule or regulation of any administrative or governmental body):
 
    (i) the occurrence of a Debenture Event of Default (see "Description of
  Junior Subordinated Debentures--Debenture Events of Default"); or
 
                                      38
<PAGE>
 
    (ii) default by the Property Trustee in the payment of any Distribution
  when it becomes due and payable, and continuation of such default for a
  period of 30 days; or
 
    (iii) default by the Property Trustee in the payment of any Redemption
  Price of any Trust Security when it becomes due and payable; or
 
    (iv) default in the performance, or breach, in any material respect, of
  any covenant or warranty of the Issuer Trustees in the Trust Agreement
  (other than a covenant or warranty a default in the performance of which or
  the breach of which is addressed in clause (ii) or (iii) above), and
  continuation of such default or breach for a period of 60 days after there
  has been given, by registered or certified mail, to the defaulting Issuer
  Trustee or Trustees by the holders of at least 25% in aggregate Liquidation
  Amount of the outstanding Capital Securities, a written notice specifying
  such default or breach and requiring it to be remedied and stating that
  such notice is a "Notice of Default" under the Trust Agreement; or
 
    (v) the occurrence of certain events of bankruptcy or insolvency with
  respect to the Property Trustee and the failure by FBS to appoint a
  successor Property Trustee within 60 days thereof.
 
  Within five Business Days after the occurrence of any Event of Default
actually known to the Property Trustee, the Property Trustee shall transmit
notice of such Event of Default to the holders of the Capital Securities, the
Administrative Agents and FBS, as Depositor, unless such Event of Default
shall have been cured or waived. FBS, as Depositor, and the Administrative
Agents are required to file annually with the Property Trustee a certificate
as to whether or not they are in compliance with all the conditions and
covenants applicable to them under the Trust Agreement.
 
  If a Debenture Event of Default has occurred and is continuing, the Capital
Securities shall have a preference over the Common Securities upon termination
of the Trust as described above. See "--Liquidation of the Trust and
Distribution of Junior Subordinated Debentures."
 
REMOVAL OF ISSUER TRUSTEES
 
  Unless a Debenture Event of Default shall have occurred and be continuing,
any Issuer Trustee may be removed at any time by the holder of the Common
Securities. If a Debenture Event of Default has occurred and is continuing,
the Property Trustee and the Delaware Trustee may be removed at such time by
the holders of a majority in Liquidation Amount of the outstanding Capital
Securities. In no event will the holders of the Capital Securities have the
right to vote to appoint, remove or replace the Administrative Agents, which
voting rights are vested exclusively in FBS as the holder of the Common
Securities. No resignation or removal of an Issuer Trustee and no appointment
of a successor trustee shall be effective until the acceptance of appointment
by the successor trustee in accordance with the provisions of the Trust
Agreement.
 
CO-TRUSTEES AND SEPARATE PROPERTY TRUSTEE
 
  Unless an Event of Default shall have occurred and be continuing, at any
time or times, for the purpose of meeting the legal requirements of the Trust
Indenture Act or of any jurisdiction in which any part of the Trust's property
may at the time be located, FBS, as the holder of the Common Securities, and
the Administrative Agents shall have power to appoint one or more persons
either to act as a co-trustee, jointly with the Property Trustee, of all or
any part of such Trust's property, or to act as separate trustee of any such
property, in either case with such powers as may be provided in the instrument
of appointment, and to vest in such person or persons in such capacity any
property, title, right or power deemed necessary or desirable, subject to the
provisions of the Trust Agreement. In case a Debenture Event of Default has
occurred and is continuing, the Property Trustee alone shall have power to
make such appointment.
 
MERGER OR CONSOLIDATION OF ISSUER TRUSTEES
 
  Any corporation into which the Property Trustee, the Delaware Trustee or any
Administrative Agent that is not a natural person may be merged or converted
or with which it may be consolidated, or any corporation resulting from any
merger, conversion or consolidation to which such Issuer Trustee shall be a
party, or any corporation succeeding to all or substantially all the corporate
trust business of such Issuer Trustee, shall be the successor of such Issuer
Trustee under the Trust Agreement, provided such corporation shall be
otherwise qualified and eligible.
 
                                      39
<PAGE>
 
MERGERS, CONSOLIDATIONS, AMALGAMATIONS OR REPLACEMENTS OF THE TRUST
 
  The Trust may not merge with or into, consolidate, amalgamate, or be
replaced by, or convey, transfer or lease its properties and assets
substantially as an entirety to any corporation or other Person, except as
described below. The Trust may, at the request of FBS, as Depositor, with the
consent of the Administrative Agents but without the consent of the holders of
the Capital Securities, merge with or into, consolidate, amalgamate, or be
replaced by or convey, transfer or lease its properties and assets
substantially as an entirety to a trust organized as such under the laws of
any State; provided, that (i) such successor entity either (a) expressly
assumes all of the obligations of the Trust with respect to the Capital
Securities or (b) substitutes for the Capital Securities other securities
having substantially the same terms as the Capital Securities (the "Successor
Securities") so long as the Successor Securities rank the same as the Capital
Securities rank in priority with respect to distributions and payments upon
liquidation, redemption and otherwise, (ii) FBS expressly appoints a trustee
of such successor entity possessing the same powers and duties as the Property
Trustee as the holder of the Junior Subordinated Debentures, (iii) the
Successor Securities are listed, or any Successor Securities will be listed
upon notification of issuance, on any national securities exchange or other
organization on which the Capital Securities are then listed, if any, (iv)
such merger, consolidation, amalgamation, replacement, conveyance, transfer or
lease does not cause the Capital Securities (including any Successor
Securities) to be downgraded by any nationally recognized statistical rating
organization, (v) such merger, consolidation, amalgamation, replacement,
conveyance, transfer or lease does not adversely affect the rights,
preferences and privileges of the holders of the Capital Securities (including
any Successor Securities) in any material respect, (vi) such successor entity
has a purpose identical to that of the Trust, (vii) prior to such merger,
consolidation, amalgamation, replacement, conveyance, transfer or lease, FBS
has received an opinion from independent counsel to the Trust experienced in
such matters to the effect that (a) such merger, consolidation, amalgamation,
replacement, conveyance, transfer or lease does not adversely affect the
rights, preferences and privileges of the holders of the Capital Securities
(including any Successor Securities) in any material respect, and (b)
following such merger, consolidation, amalgamation, replacement, conveyance,
transfer or lease, neither the Trust nor such successor entity will be
required to register as an investment company under the Investment Company Act
of 1940, as amended (the "Investment Company Act"), and (viii) FBS or any
permitted successor or assignee owns all of the common securities of such
successor entity and guarantees the obligations of such successor entity under
the Successor Securities at least to the extent provided by the Guarantee.
Notwithstanding the foregoing, the Trust shall not, except with the consent of
holders of 100% in Liquidation Amount of the Trust Securities, consolidate,
amalgamate, merge with or into, or be replaced by or convey, transfer or lease
its properties and assets substantially as an entirety to any other entity or
permit any other entity to consolidate, amalgamate, merge with or into, or
replace it if such consolidation, amalgamation, merger, replacement,
conveyance, transfer or lease would cause the Trust or the successor entity to
be classified as other than a grantor trust for United States Federal income
tax purposes.
 
VOTING RIGHTS; AMENDMENT OF THE TRUST AGREEMENT
 
  Except as provided below and under "--Description of Guarantee--Amendments
and Assignment" and as otherwise required by law and the Trust Agreement, the
holders of the Capital Securities will have no voting rights.
 
  The Trust Agreement may be amended from time to time by FBS, the Property
Trustee and the Administrative Agents, without the consent of the holders of
the Trust Securities (i) to cure any ambiguity, correct or supplement any
provisions in the Trust Agreement that may be inconsistent with any other
provision, or to make any other provisions with respect to matters or
questions arising under the Trust Agreement, which shall not be inconsistent
with the other provisions of the Trust Agreement, or (ii) to modify, eliminate
or add to any provisions of the Trust Agreement to such extent as shall be
necessary to ensure that the Trust will be classified for United States
Federal income tax purposes as a grantor trust at all times that any Trust
Securities are outstanding or to ensure that the Trust will not be required to
register as an "investment company" under the Investment Company Act;
provided, however, that in the case of clause (i), such action shall not
adversely affect in any material respect the interests of any holder of Trust
Securities, and any amendments of the Trust Agreement shall become effective
when notice thereof is given to the holders of the Trust Securities. The Trust
 
                                      40
<PAGE>
 
Agreement may be amended by the Issuer Trustees and FBS with (i) the consent
of holders representing not less than a majority (based upon Liquidation
Amounts) of the outstanding Trust Securities, and (ii) receipt by the Issuer
Trustees of an opinion of counsel to the effect that such amendment or the
exercise of any power granted to the Issuer Trustees in accordance with such
amendment will not affect the Trust's status as a grantor trust for United
States Federal income tax purposes or the Trust's exemption from status as an
"investment company" under the Investment Company Act, provided that without
the consent of each holder of Trust Securities, the Trust Agreement may not be
amended to (i) change the amount or timing of any Distribution on the Trust
Securities or otherwise adversely affect the amount of any Distribution
required to be made in respect of the Trust Securities as of a specified date
or (ii) restrict the right of a holder of Trust Securities to institute suit
for the enforcement of any such payment on or after such date.
 
  So long as any Junior Subordinated Debentures are held by the Property
Trustee, the Issuer Trustees shall not (i) direct the time, method and place
of conducting any proceeding for any remedy available to the Debenture
Trustee, or executing any trust or power conferred on such Property Trustee
with respect to the Junior Subordinated Debentures, (ii) waive any past
default that is waivable under Section 513 of the Indenture, (iii) exercise
any right to rescind or annul a declaration that the principal of all the
Junior Subordinated Debentures shall be due and payable or (iv) consent to any
amendment, modification or termination of the Indenture or the Junior
Subordinated Debentures, where such consent shall be required, without, in
each case, obtaining the prior approval of the holders of a majority in
aggregate Liquidation Amount of all outstanding Capital Securities; provided,
however, that where a consent under the Indenture would require the consent of
each holder of Junior Subordinated Debentures affected thereby, no such
consent shall be given by the Property Trustee without the prior consent of
each holder of the Capital Securities. The Issuer Trustees shall not revoke
any action previously authorized or approved by a vote of the holders of the
Capital Securities except by subsequent vote of such holders. The Property
Trustee shall notify each holder of Capital Securities of any notice of
default with respect to the Junior Subordinated Debentures. In addition to
obtaining the foregoing approvals of such holders of the Capital Securities,
prior to taking any of the foregoing actions, the Issuer Trustees shall obtain
an opinion of counsel experienced in such matters to the effect that the Trust
will not be classified as an association taxable as a corporation for United
States Federal income tax purposes on account of such action.
 
  Any required approval of holders of Capital Securities may be given at a
meeting of such holders convened for such purpose or pursuant to written
consent. The Property Trustee will cause a notice of any meeting at which
holders of Capital Securities are entitled to vote, or of any matter upon
which action by written consent of such holders is to be taken, to be given to
each holder of record of Capital Securities in the manner set forth in the
Trust Agreement.
 
  No vote or consent of the holders of Capital Securities will be required for
the Trust to redeem and cancel the Capital Securities in accordance with the
Trust Agreement.
 
  Notwithstanding that holders of the Capital Securities are entitled to vote
or consent under any of the circumstances described above, any of the Capital
Securities that are owned by FBS, the Issuer Trustees or any affiliate of FBS
or any Issuer Trustees, shall, for purposes of such vote or consent, be
treated as if they were not outstanding.
 
FORM, DENOMINATION, BOOK-ENTRY PROCEDURES AND TRANSFER
 
  In the event that Capital Securities are issued in certificated form, such
Capital Securities will be in blocks having a Liquidation Amount of not less
than $100,000 (100 Capital Securities) and may be transferred or exchanged in
such blocks in the manner and at the offices described below.
 
  The New Capital Securities initially will be represented by one or more
Capital Securities in registered, global form (collectively, the "Global
Capital Securities"). The Global Capital Securities will be deposited upon
issuance with the Property Trustee as custodian for The Depository Trust
Company ("DTC"), in New York, New York, and registered in the name of DTC or
its nominee, in each case for credit to an account of a direct or indirect
participant in DTC as described below.
 
                                      41
<PAGE>
 
  Except as set forth below, the Global Capital Securities may be transferred,
in whole and not in part, only to another nominee of DTC or to a successor of
DTC or its nominee. Beneficial interests in the Global Capital Securities may
not be exchanged for Capital Securities in certificated form except in the
limited circumstances described below. See "--Exchange of Book-Entry Capital
Securities for Certificated Capital Securities".
 
 Depositary Procedures
 
  DTC has advised the Trust and FBS that DTC is a limited-purpose trust
company created to hold securities for its participating organizations
(collectively, the "Participants") and to facilitate the clearance and
settlement of transactions in those securities between Participants through
electronic book-entry changes in accounts of its Participants. The
Participants include securities brokers and dealers (including the Initial
Purchasers), banks, trust companies, clearing corporations and certain other
organizations. Access to DTC's system is also available to other entities such
as banks, brokers, dealers and trust companies that clear through or maintain
a custodial relationship with a Participant, either directly or indirectly
(collectively, the "Indirect Participants"). Persons who are not Participants
may beneficially own securities held by or on behalf of DTC only through the
Participants or the Indirect Participants. The ownership interest and transfer
of ownership interest of each actual purchaser of each security held by or on
behalf of DTC are recorded on the records of the Participants and Indirect
Participants.
 
  DTC has also advised the Trust and FBS that, pursuant to procedures
established by it, (i) upon deposit of the Global Capital Securities, DTC will
credit the accounts of Participants designated by the Initial Purchasers with
portions of the principal amount of the Global Capital Securities and (ii)
ownership of such interests in the Global Capital Securities will be shown on,
and the transfer of ownership thereof will be effected only through, records
maintained by DTC (with respect to the Participants) or by the Participants
and the Indirect Participants (with respect to other owners of beneficial
interests in the Global Capital Securities).
 
  EXCEPT AS DESCRIBED BELOW, OWNERS OF INTERESTS IN THE GLOBAL CAPITAL
SECURITIES WILL NOT HAVE CAPITAL SECURITIES REGISTERED IN THEIR NAME, WILL NOT
RECEIVE PHYSICAL DELIVERY OF CAPITAL SECURITIES IN CERTIFICATED FORM AND WILL
NOT BE CONSIDERED THE REGISTERED OWNERS OR HOLDERS THEREOF UNDER THE TRUST
AGREEMENT FOR ANY PURPOSE.
 
  Payments in respect of the Global Capital Security registered in the name of
DTC or its nominee will be payable by the Property Trustee to DTC in its
capacity as the registered holder under the Trust Agreement. Under the terms
of the Trust Agreement, the Property Trustee will treat the persons in whose
names the Capital Securities, including the Global Capital Securities, are
registered as the owners thereof for the purpose of receiving such payments
and for any and all other purposes whatsoever. Consequently, neither the
Property Trustee nor any agent thereof has or will have any responsibility or
liability for (i) any aspect of DTC's records or any Participant's or Indirect
Participant's records relating to or payments made on account of beneficial
ownership interests in the Global Capital Securities, or for maintaining,
supervising or reviewing any of DTC's records or any Participant's or Indirect
Participant's records relating to the beneficial ownership interests in the
Global Capital Securities or (ii) any other matter relating to the actions and
practices of DTC or any of its Participants or Indirect Participants. DTC has
advised the Trust and FBS that its current practice, upon receipt of any
payment in respect of securities such as the Capital Securities, is to credit
the accounts of the relevant Participants with the payment on the payment
date, in amounts proportionate to their respective holdings in Liquidation
Amount of beneficial interests in the relevant security as shown on the
records of DTC unless DTC has reason to believe it will not receive payment on
such payment date. Payments by the Participants and the Indirect Participants
to the beneficial owners of Capital Securities will be governed by standing
instructions and customary practices and will be the responsibility of the
Participants or the Indirect Participants and will not be the responsibility
of DTC, the Property Trustee or the Trust. Neither the Trust nor the Property
Trustee will be liable for any delay by DTC or any of its Participants in
identifying the beneficial owners of the Capital Securities, and the Trust and
the Property Trustee may conclusively rely on and will be protected in relying
on instructions from DTC or its nominee for all purposes.
 
 
                                      42
<PAGE>
 
  Interests in the Global Capital Securities will trade in DTC's Same-Day
Funds Settlement System and secondary market trading activity in such
interests will therefore settle in immediately available funds, subject in all
cases to the rules and procedures of DTC and its participants.
 
  Transfers between Participants in DTC will be effected in accordance with
DTC's procedures, and will be settled in same-day funds.
 
  DTC has advised the Trust and FBS that it will take any action permitted to
be taken by a holder of Capital Securities only at the direction of one or
more Participants to whose account with DTC interests in the Global Capital
Securities are credited and only in respect of such portion of the aggregate
Liquidation Amount of the Capital Securities as to which such Participant or
Participants has or have given such direction. However, if there is an Event
of Default under the Trust Agreement, DTC reserves the right to exchange the
Global Capital Securities for legended Capital Securities in certificated form
and to distribute such Capital Securities to its Participants.
 
PAYMENT AND PAYING AGENCY
 
  Payments in respect of the Capital Securities held in global form shall be
made to the Depositary, which shall credit the relevant accounts at the
Depositary on the applicable Distribution Dates or in respect of the Capital
Securities that are not held by the Depositary, such payments shall be made by
check mailed to the address of the holder entitled thereto as such address
shall appear on the register. The paying agent (the "Paying Agent") shall
initially be the Property Trustee and any co-paying agent chosen by the
Property Trustee and acceptable to the Administrative Agents and FBS. The
Paying Agent shall be permitted to resign as Paying Agent upon 30 days'
written notice to the Property Trustee and FBS. In the event that the Property
Trustee shall no longer be the Paying Agent, the Administrative Agents shall
appoint a successor (which shall be a bank or trust company acceptable to the
Administrative Agents and FBS) to act as Paying Agent.
 
RESTRICTIONS ON TRANSFER
 
  The Capital Securities will be issued, any may be transferred only, in
blocks having a Liquidation Amount of not less than $100,000 (100 Capital
Securities). Any attempted transfer, sale or other disposition of Capital
Securities in a block having a Liquidation Amount of less than $100,000 shall
be deemed to be void and of no legal effect whatsoever. Any such transferee
shall be deemed not to be the holder of such Capital Securities for any
purpose, including but not limited to the receipt of Distributions on such
Capital Securities, and such transferee shall be deemed to have no interest
whatsoever in such Capital Securities.
 
RATING
 
  The Capital Securities are expected to be rated "BBB+" by Standard & Poor's
Rating Services and "a2" by Moody's Investor Services, Inc.
 
REGISTRAR AND TRANSFER AGENT
 
  The Property Trustee will act as registrar and transfer agent for the
Capital Securities.
 
  Registration of transfers of the Capital Securities will be effected without
charge by or on behalf of the Trust, but upon payment of any tax or other
governmental charges that may be imposed in connection with any transfer or
exchange. The Trust will not be required to register or cause to be registered
the transfer of the Capital Securities after they have been called for
redemption.
 
INFORMATION CONCERNING THE PROPERTY TRUSTEE
 
  The Property Trustee, other than during the occurrence and continuance of an
Event of Default, undertakes to perform only such duties as are specifically
set forth in the Trust Agreement and, after such Event of Default,
 
                                      43
<PAGE>
 
must exercise the same degree of care and skill as a prudent person would
exercise or use in the conduct of his or her own affairs. Subject to this
provision, the Property Trustee is under no obligation to exercise any of the
powers vested in it by the Trust Agreement at the request of any holder of
Trust Securities unless it is offered reasonable indemnity against the costs,
expenses and liabilities that might be incurred thereby. If no Event of
Default has occurred and is continuing and the Property Trustee is required to
decide between alternative causes of action, construe ambiguous provisions in
the Trust Agreement or is unsure of the application of any provision of the
Trust Agreement, and the matter is not one on which holders of the Capital
Securities or the Common Securities are entitled under the Trust Agreement to
vote, then the Property Trustee shall take such action as is directed by FBS
and if not so directed, shall take such action as it deems advisable and in
the best interests of the holders of the Trust Securities and will have no
liability except for its own bad faith, negligence or willful misconduct.
 
MISCELLANEOUS
 
  The Administrative Agents are authorized and directed to conduct the affairs
of and to operate the Trust in such a way that the Trust will not be deemed to
be an "investment company" required to be registered under the Investment
Company Act or classified as an association taxable as a corporation for
United States Federal income tax purposes and so that the Junior Subordinated
Debentures will be treated as indebtedness of FBS for United States Federal
income tax purposes. In this connection, FBS and the Administrative Agents are
authorized to take any action, not inconsistent with applicable law, the
certificate of trust of the Trust or the Trust Agreement, that FBS and the
Administrative Agents determine in their discretion to be necessary or
desirable for such purposes, as long as such action does not materially
adversely affect the interests of the holders of the Trust Securities.
 
  Holders of the Trust Securities have no preemptive or similar rights.
 
  The Trust may not borrow money or issue debt or mortgage or pledge any of
its assets.
 
                 DESCRIPTION OF JUNIOR SUBORDINATED DEBENTURES
 
  The Old Junior Subordinated Debentures were issued and the New Junior
Subordinated Debentures will be issued as a separate series under the
Indenture. The Indenture has been qualified under the Trust Indenture Act.
This summary of certain terms and provisions of the Junior Subordinated
Debentures and the Indenture does not purport to be complete, and where
reference is made to particular provisions of the Indenture, such provisions,
including the definitions of certain terms, some of which are not otherwise
defined herein, are qualified in their entirety by reference to all of the
provisions of the Indenture and those terms made a part of the Indenture by
the Trust Indenture Act.
 
GENERAL
 
  Concurrently with the issuance of the Capital Securities, the Trust invested
the proceeds thereof, together with the consideration paid by FBS for the
Common Securities, in Old Junior Subordinated Debentures issued by FBS.
Pursuant to the Exchange Offer, FBS will exchange the Old Junior Subordinated
Debentures for the New Junior Subordinated Debentures as soon as practicable
after the date hereof. No Old Junior Subordinated Debentures will remain
outstanding after such exchange. The following is a description of the New
Junior Subordinated Debentures (referred to in this subsection as the "Junior
Subordinated Debentures").
  The Junior Subordinated Debentures will bear interest at the annual rate of
8.09% of the principal amount thereof, payable semi-annually in arrears on May
15 and November 15 of each year (each, an "Interest Payment Date"), commencing
May 15, 1997, to the person in whose name each Junior Subordinated Debenture
is registered, subject to certain exceptions, at the close of business on the
Business Day next preceding such Interest Payment Date. It is anticipated
that, until the liquidation, if any, of the Trust, each Junior Subordinated
Debenture
 
                                      44
<PAGE>
 
will be held in the name of the Property Trustee in trust for the benefit of
the holders of the Trust Securities. The amount of interest payable for any
period will be computed on the basis of a 360-day year of twelve 30-day
months. In the event that any date on which interest is payable on the Junior
Subordinated Debentures is not a Business Day, then payment of the interest
payable on such date will be made on the next succeeding day that is a
Business Day (and without any interest or other payment in respect of any such
delay), except that, if such Business Day is in the next succeeding calendar
year, such payment shall be made on the immediately preceding Business Day, in
each case with the same force and effect as if made on the date such payment
was originally payable. Accrued interest that is not paid on the applicable
Interest Payment Date will bear additional interest on the amount thereof (to
the extent permitted by law) at the rate per annum of 8.09% thereof,
compounded semi-annually. The term "interest" as used herein shall include
semi-annual interest payments, interest on semi-annual interest payments not
paid on the applicable Interest Payment Date and Additional Sums (as defined
below), as applicable.
 
  The Junior Subordinated Debentures will mature on November 15, 2026. The
Junior Subordinated Debentures will be unsecured and will rank junior and be
subordinate in right of payment to all Senior and Subordinated Debt. Because
FBS is a bank holding company, the right of FBS to participate in any
distribution of assets of any subsidiary, including FBNA, upon such
subsidiary's liquidation or reorganization or otherwise (and thus the ability
of holders of the Capital Securities to benefit indirectly from such
distribution), is subject to the prior claims of creditors of that subsidiary,
except to the extent that FBS may itself be recognized as a creditor of that
subsidiary. Accordingly, the Junior Subordinated Debentures will be
subordinated to all Senior and Subordinated Debt and effectively subordinated
to all existing and future liabilities of FBS's subsidiaries, and holders of
Junior Subordinated Debentures should look only to the assets of FBS for
payments on the Junior Subordinated Debentures. The Indenture does not limit
the incurrence or issuance of other secured or unsecured debt of FBS,
including Senior and Subordinated Debt whether under the Indenture or any
existing or other indenture that FBS may enter into in the future or
otherwise. See "--Subordination."
 
  The Junior Subordinated Debentures will rank pari passu with all Other
Debentures issued under the Indenture and will be unsecured and subordinate
and junior in right of payment to the extent and in the manner set forth in
the Indenture to all Senior and Subordinated Debt of FBS. See "--
Subordination." FBS is a non-operating holding company and almost all of the
operating assets of FBS and its consolidated subsidiaries are owned by such
subsidiaries. FBS relies primarily on dividends from such subsidiaries to meet
its obligations. FBS is a legal entity separate and distinct from its banking
and non-banking affiliates. The principal sources of FBS' income are
dividends, interest and fees from FBNA and the other banking and non-banking
affiliates. The bank subsidiaries of FBS, including FBNA (the "Banks"), are
subject to certain restrictions imposed by federal law on any extensions of
credit to, and certain other transactions with, FBS and certain other
affiliates, and on investments in stock or other securities thereof. Such
restrictions prevent FBS and such other affiliates from borrowing from the
Banks unless the loans are secured by various types of collateral. Further,
such secured loans, other transactions and investments by any of the Banks are
generally limited in amount as to FBS and as to each of such other affiliates
to 10% of such Bank's capital and surplus and as to FBS and all of such other
affiliates to an aggregate of 20% of such Bank's capital and surplus. In
addition, payment of dividends to FBS by the subsidiary banks is subject to
ongoing review by banking regulators and is subject to various statutory
limitations and in certain circumstances requires approval by banking
regulatory authorities. Because FBS is a holding company, the right of FBS to
participate in any distribution of assets of any subsidiary upon such
subsidiary's liquidation or reorganization or otherwise, is subject to the
prior claims of creditors of the subsidiary, except to the extent FBS may
itself be recognized as a creditor of that subsidiary. Accordingly, the Junior
Subordinated Debentures will be effectively subordinated to all existing and
future liabilities of FBS's subsidiaries, and holders of Junior Subordinated
Debentures should look only to the assets of FBS for payments on the Junior
Subordinated Debentures. The Indenture does not limit the incurrence or
issuance of other secured or unsecured debt of FBS, including Senior and
Subordinated Debt, whether under the Indenture, any other indenture that FBS
may enter into in the future or otherwise. See "--Subordination."
 
  The Other Debentures will be issuable in one or more series pursuant to an
indenture supplemental to the Indenture or a resolution of FBS's Board of
Directors or a committee thereof.
 
                                      45
<PAGE>
 
DENOMINATIONS, REGISTRATION AND TRANSFER
 
  The Junior Subordinated Debentures will be represented by one or more global
certificates registered in the name of Cede & Co. as the nominee of DTC.
Beneficial interests in the Junior Subordinated Debentures will be shown on,
and transfers thereof will be effected only through, records maintained by
participants in DTC. Except as described below, Junior Subordinated Debentures
in certificated form will not be issued in exchange for the global
certificates.
 
  A global security shall be exchangeable for Junior Subordinated Debentures
registered in the names of persons other than Cede & Co. only if (i) DTC
notifies FBS that it is unwilling or unable to continue as a depositary for
such global security and no successor depositary shall have been appointed, or
if at any time DTC ceases to be a "clearing agency" registered under the
Exchange Act, at a time when DTC is required to be so registered to act as
such depositary, (ii) FBS in its sole discretion determines that such global
security shall be so exchangeable, or (iii) there shall have occurred and be
continuing a Debenture Event of Default. Any global security that is
exchangeable pursuant to the preceding sentence shall be exchangeable for
certificates registered in such names as DTC shall direct. It is expected that
such instructions will be based upon directions received by DTC from its
Participants with respect to ownership of beneficial interests in such global
security. In the event that Junior Subordinated Debentures are issued in
certificated form, such Junior Subordinated Debentures will be in minimum
denominations of $100,000 and integral multiples of $1,000 in excess thereof
and may be transferred or exchanged only in such minimum denominations and in
the manner and at the offices described below.
 
  Payments on Junior Subordinated Debentures represented by a global security
will be made to DTC, as the depositary for the Junior Subordinated Debentures.
In the event Junior Subordinated Debentures are issued in certificated form,
principal and interest will be payable, the transfer of the Junior
Subordinated Debentures will be registrable, and Junior Subordinated
Debentures will be exchangeable for Junior Subordinated Debentures of other
denominations of a like aggregate principal amount, at the corporate office of
the Debenture Trustee in New York, New York, or at the offices of any paying
agent or transfer agent appointed by FBS, provided that payment of interest
may be made at the option of FBS by check mailed to the address of the persons
entitled thereto or by wire transfer. In addition, if the Junior Subordinated
Debentures are issued in certificated form, the record dates for payment of
interest will be the 15th day of the last month of each semi-annual period.
 
  For a description of DTC and the terms of the depositary arrangements
relating to payments, transfers, voting rights, redemptions and other notices
and other matters, see "--Description of Capital Securities--Form,
Denomination, Book-Entry Procedures and Transfer" above. If the Junior
Subordinated Debentures are distributed to the holders of the Trust Securities
upon the termination of the Trust, the form, denomination, book-entry and
transfer procedures with respect to the Capital Securities as described above
under "--Description of Capital Securities--Form, Denominations, Book-Entry
Procedures and Transfer," shall apply to the Junior Subordinated Debentures
mutatis mutandis.
 
PAYMENT AND PAYING AGENTS
 
  Payment of principal of (and premium, if any) and any interest on Junior
Subordinated Debentures will be made at the office of the Debenture Trustee in
the City of New York or at the office of such Paying Agent or Paying Agents as
FBS may designate from time to time, except that at the option of FBS payment
of any interest may be made except in the case of Junior Subordinated
Debentures in global form, (i) by check mailed to the address of the Person
entitled thereto as such address shall appear in the register for Junior
Subordinated Debentures or (ii) by transfer to an account maintained by the
Person entitled thereto as specified in such register, provided that proper
transfer instructions have been received by the relevant Record Date. Payment
of any interest on any Junior Subordinated Debenture will be made to the
Person in whose name such Junior Subordinated Debenture is registered at the
close of business on the Record Date for such interest, except in the case of
defaulted interest. FBS may at any time designate additional Paying Agents or
rescind the designation of any Paying Agent; however FBS will at all times be
required to maintain a Paying Agent in each Place of Payment for the Junior
Subordinated Debentures.
 
                                      46
<PAGE>
 
  Any moneys deposited with the Debenture Trustee or any Paying Agent, or then
held by FBS in trust, for the payment of the principal of (and premium, if
any) or interest on any Junior Subordinated Debenture and remaining unclaimed
for two years after such principal (and premium, if any) or interest has
become due and payable shall, at the request of FBS, be repaid to FBS and the
holder of such Junior Subordinated Debenture shall thereafter look, as a
general unsecured creditor, only to FBS for payment thereof.
 
OPTION TO EXTEND INTEREST PAYMENT DATE
 
  So long as no Debenture Event of Default has occurred or is continuing, FBS
has the right under the Indenture at any time during the term of the Junior
Subordinated Debentures to defer the payment of interest at any time or from
time to time for a period not exceeding 10 consecutive semi-annual periods
with respect to each Extension Period, provided that no Extension Period may
extend beyond the Stated Maturity. At the end of such Extension Period, FBS
must pay all interest then accrued and unpaid (together with interest thereon
at the annual rate of 8.09%, compounded semi-annually, to the extent permitted
by applicable law). During an Extension Period, interest will continue to
accrue and holders of Junior Subordinated Debentures (and holders of the
Capital Securities while Capital Securities are outstanding) will be required
to accrue interest income for United States federal income tax purposes. See
"Certain Federal Income Tax Consequences--Interest Income and Original Issue
Discount."
 
  During any such Extension Period, FBS may not, and may not permit any
subsidiary of FBS to, (i) declare or pay any dividends or distributions on, or
redeem, purchase, acquire, or make a liquidation payment with respect to, any
of FBS's capital stock (which includes common and preferred stock) or (ii)
make any payment of principal, interest or premium, if any, on or repay,
repurchase or redeem any debt securities of FBS (including any Other
Debentures) that rank pari passu with or junior in interest to the Junior
Subordinated Debentures or make any guarantee payments with respect to any
guarantee by FBS of the debt securities of any subsidiary of FBS (including
any Other Guarantees) if such guarantee ranks pari passu with or junior in
interest to the Junior Subordinated Debentures (other than (a) dividends or
distributions in common stock of FBS, (b) any declaration of a dividend in
connection with the implementation of a stockholders' rights plan, or the
issuance of stock under any such plan in the future, or the redemption or
repurchase of any such rights pursuant thereto, (c) payments under the
Guarantee, and (d) purchases of common stock related to the issuance of common
stock or rights under any of FBS's benefit plans for its directors, officers
or employees). Prior to the termination of any such Extension Period, FBS may
further extend such Extension Period, provided that such extension does not
cause such Extension Period to exceed 10 consecutive semi-annual periods or to
extend beyond the Stated Maturity. Upon the termination of any such Extension
Period and the payment of all amounts then due on any Interest Payment Date,
FBS may elect to begin a new Extension Period subject to the above
requirements. No interest shall be due and payable during an Extension Period,
except at the end thereof. FBS must give the Property Trustee, the
Administrative Agents and the Debenture Trustee notice of its election of any
Extension Period (or an extension thereof) at least five Business Days prior
to the earlier of (i) the date the Distributions on the Trust Securities would
have been payable except for the election to begin or extend such Extension
Period or (ii) the date the Administrative Agents are required to give notice
to any automated quotation system or to holders of Capital Securities of the
record date or the date such Distributions are payable, but in any event not
less than five Business Days prior to such record date. The Debenture Trustee
shall give notice of FBS's election to begin or extend a new Extension Period
to the holders of the Capital Securities. There is no limitation on the number
of times that FBS may elect to begin an Extension Period.
 
OPTIONAL PREPAYMENT
 
  The Junior Subordinated Debentures will be prepayable, in whole (but not in
part), at the option of FBS at any time on or after November 15, 2006, subject
to FBS having received prior approval of the Federal Reserve if then required
under applicable capital guidelines or policies of the Federal Reserve, at a
prepayment price (the
 
                                      47
<PAGE>
 
"Optional Prepayment Price") equal to the percentage of the outstanding
principal amount of the Junior Subordinated Debentures specified below, plus,
in each case, accrued interest thereon to the date of prepayment:
 
  November 15, 2006 to November 14, 2007: 104.045%
 
  November 15, 2007 to November 14, 2008: 103.641%
 
  November 15, 2008 to November 14, 2009: 103.236%
 
  November 15, 2009 to November 14, 2010: 102.832%
 
  November 15, 2010 to November 14, 2011: 102.427%
 
  November 15, 2011 to November 14, 2012: 102.023%
 
  November 15, 2012 to November 14, 2013: 101.618%
 
  November 15, 2013 to November 14, 2014: 101.214%
 
  November 15, 2014 to November 14, 2015: 100.809%
 
  November 15, 2015 to November 14, 2016: 100.405%
 
  On or after November 15, 2016: 100%
 
TAX EVENT PREPAYMENT
 
  If a Tax Event (as defined below) shall occur and be continuing, FBS may, at
its option and subject to receipt of prior approval of the Federal Reserve if
then required under applicable capital guidelines or policies of the Federal
Reserve, prepay the Junior Subordinated Debentures in whole (but not in part)
at any time within 90 days of the occurrence of such Tax Event, at a
prepayment price (the "Tax Event Prepayment Price") equal to the greater of
(i) 100% of the principal amount of such Junior Subordinated Debentures or
(ii) as determined by a Quotation Agent (as defined below), the sum of the
present values of the remaining scheduled payments of principal and interest
thereon discounted to the prepayment date on a semi-annual basis (assuming a
360 day year consisting of 30-day months) at the Adjusted Treasury Rate, plus,
in each case, accrued interest thereon to the date of prepayment.
 
  "Adjusted Treasury Rate" means, with respect to any prepayment date, the
rate per annum equal to the semi-annual equivalent yield to maturity of the
Comparable Treasury Issue plus (i) if such prepayment date occurs prior to
November 15, 1997, 1.25% or (ii) if such prepayment date occurs on or after
November 15, 1997, 1.00%, assuming a price for the Comparable Treasury Issue
(expressed as a percentage of its principal amount) equal to the Comparable
Treasury Price for such prepayment date.
 
  "Comparable Treasury Issue" means the United States Treasury security
selected by the Quotation Agent as having a maturity comparable to the
remaining term of the Junior Subordinated Debentures to be prepaid that would
be utilized, at the time of selection and in accordance with customary
financial practice, in pricing new issues of corporate debt securities of
comparable maturity to the remaining term of the Junior Subordinated
Debentures.
 
  "Quotation Agent" means the Reference Treasury Dealer appointed by the
Debenture Trustee after consultation with FBS. "Reference Treasury Dealer"
means (i) Goldman, Sachs & Co. and their respective successors; provided,
however, that if the foregoing shall cease to be a primary U.S. Government
securities dealer in New York City (a "Primary Treasury Dealer"), FBS shall
substitute therefor another Primary Treasury Dealer; and (ii) any other
Primary Treasury Dealer selected by the Debenture Trustee after consultation
with FBS.
 
  "Comparable Treasury Price" means, with respect to any prepayment date, (i)
the average of the bid and asked prices for the Comparable Treasury Issue
(expressed in each case as a percentage of its principal amount) on the third
Business Day preceding such prepayment date, as set forth in the daily
statistical release (or any successor release) published by the Federal
Reserve Bank of New York and designated "Composite 3:30 p.m. Quotations for
U.S. Government Securities" or (ii) if such release (or any successor release)
is not published or does not contain such prices on such Business Day, (A) the
average of the Reference Treasury Dealer Quotations for such prepayment date,
after excluding the highest and lowest such Reference Treasury Dealer
Quotations, or (B) if the Debenture Trustee obtains fewer than three such
Reference Treasury Dealer Quotations, the average of all such Quotations.
 
                                      48
<PAGE>
 
  "Reference Treasury Dealer Quotations" means, with respect to each Reference
Treasury Dealer and any prepayment date, the average, as determined by the
Debenture Trustee, of the bid and asked prices for the Comparable Treasury
Issue (expressed in each case as a percentage of its principal amount) quoted
in writing to the Debenture Trustee by such Reference Treasury Dealer at 5:00
p.m. on the third Business Day preceding such prepayment date.
 
  "Additional Sums" means the additional amounts as may be necessary in order
that the amount of Distributions then due and payable by the Trust on the
outstanding Capital Securities and Common Securities shall not be reduced as a
result of any additional taxes, duties and other governmental charges to which
the Trust has become subject as a result of a Tax Event.
 
  "Tax Event" means the receipt by the Trust of an opinion of counsel
experienced in such matters to the effect that, as a result of any amendment
to, or change (including any announced prospective change) in, the laws (or
any regulations thereunder) of the United States or any political subdivision
or taxing authority thereof or therein, or as a result of any official
administrative pronouncement or judicial decision interpreting or applying
such laws or regulations, which amendment or change is effective or which
pronouncement or decision is announced on or after the Issue Date, there is
more than an insubstantial risk that (i) the Trust is, or will be within 90
days of the date of such opinion, subject to United States Federal income tax
with respect to income received or accrued on the Junior Subordinated
Debentures, (ii) interest payable by FBS on the Junior Subordinated Debentures
is not, or within 90 days of the date of such opinion, will not be, deductible
by FBS, in whole or in part, for United States Federal income tax purposes, or
(iii) the Trust is, or will be within 90 days of the date of such opinion,
subject to more than a de minimis amount of other taxes, duties or other
governmental charges.
 
  Notice of any prepayment will be mailed at least 30 days but not more than
60 days before the redemption date to each holder of Junior Subordinated
Debentures to be prepaid at its registered address. Unless FBS defaults in
payment of the prepayment price, on and after the prepayment date interest
ceases to accrue on such Junior Subordinated Debentures called for prepayment.
 
  If the the Trust is required to pay any additional taxes, duties or other
governmental charges as a result of a Tax Event, FBS will pay as additional
amounts on the Junior Subordinated Debentures the Additional Sums.
 
RESTRICTIONS ON CERTAIN PAYMENTS
 
  FBS will also covenant that it will not, and will not permit any subsidiary
of FBS to, (i) declare or pay any dividends or distributions on, or redeem,
purchase, acquire, or make a liquidation payment with respect to, any of FBS's
capital stock (which includes common and preferred stock) or (ii) make any
payment of principal, interest or premium, if any, on or repay or repurchase
or redeem any debt securities of FBS (including Other Debentures) that rank
pari passu with or junior in interest to the Junior Subordinated Debentures or
make any guarantee payments with respect to any guarantee by FBS of the debt
securities of any subsidiary of FBS (including under Other Guarantees) if such
guarantee ranks pari passu or junior in interest to the Junior Subordinated
Debentures (other than (a) dividends or distributions in common stock of FBS,
(b) any declaration of a dividend in connection with the implementation of a
stockholder's rights plan, or the issuance of stock under any such plan in the
future, or the redemption or repurchase of any such rights pursuant thereto,
(c) payments under the Guarantee and (d) purchases of common stock related to
the issuance of common stock or rights under any of FBS's benefit plans for
its directors, officers or employees) if at such time (i) there shall have
occurred any event of which FBS has actual knowledge that (a) with the giving
of notice or the lapse of time, or both, would constitute a "Debenture Event
of Default" and (b) in respect of which FBS shall not have taken reasonable
steps to cure, (ii) if such Junior Subordinated Debentures are held by the
Trust, FBS shall be in default with respect to its payment of any obligations
under the Guarantee or (iii) FBS shall have given notice of its election of an
Extension Period as provided in the Indenture and shall not have rescinded
such notice, or such Extension Period, or any extension thereof, shall be
continuing.
 
 
                                      49
<PAGE>
 
MODIFICATION OF INDENTURE
 
  From time to time FBS and the Debenture Trustee may, without the consent of
the holders of Junior Subordinated Debentures, amend, waive or supplement the
Indenture for specified purposes, including, among other things, curing
ambiguities, defects or inconsistencies (provided that any such action does
not materially adversely affect the interest of the holders of Junior
Subordinated Debentures and qualifying, or maintaining the qualification of,
the Indenture under the Trust Indenture Act. The Indenture contains provisions
permitting FBS and the Debenture Trustee, with the consent of the holders of
not less than a majority in principal amount of Junior Subordinated
Debentures, to modify the Indenture in a manner affecting the rights of the
holders of Junior Subordinated Debentures; provided, that no such modification
may, without the consent of the holder of each outstanding Junior Subordinated
Debenture so affected, (i) change the Stated Maturity, or reduce the principal
amount of the Junior Subordinated Debentures, or reduce the rate or extend the
time of payment of interest thereon or (ii) reduce the percentage of principal
amount of Junior Subordinated Debentures, the holders of which are required to
consent to any such modification of the Indenture.
 
  In addition, FBS and the Debenture Trustee may execute, without the consent
of any holder of Junior Subordinated Debentures, any supplemental Indenture
for the purpose of creating any Other Debentures.
 
DEBENTURE EVENTS OF DEFAULT
 
  The Indenture provides that any one or more of the following described
events with respect to the Junior Subordinated Debentures constitutes a
"Debenture Event of Default":
 
    (i) failure for 30 days to pay any interest on the Junior Subordinated
  Debentures or any Other Debentures, when due (subject to the deferral of
  any due date in the case of an Extension Period); or
 
    (ii) failure to pay any principal or premium, if any, on the Junior
  Subordinated Debentures or any Other Debentures when due whether at
  maturity, upon redemption by declaration or otherwise; or
 
    (iii) failure to observe or perform in any material respect certain other
  covenants contained in the Indenture for 90 days after written notice to
  FBS from the Debenture Trustee or the holders of at least 25% in aggregate
  outstanding principal amount of Junior Subordinated Debentures; or
 
    (iv) certain events in bankruptcy, insolvency or reorganization of FBS.
 
  The holders of a majority in aggregate outstanding principal amount of the
Junior Subordinated Debentures have the right to direct the time, method and
place of conducting any proceeding for any remedy available to the Debenture
Trustee. The Debenture Trustee or the holders of not less than 25% in
aggregate outstanding principal amount of the Junior Subordinated Debentures
may declare the principal due and payable immediately upon a Debenture Event
of Default. The holders of a majority in aggregate outstanding principal
amount of the Junior Subordinated Debentures may annul such declaration and
waive the default if the default (other than the non-payment of the principal
of the Junior Subordinated Debentures which has become due solely by such
acceleration) has been cured and a sum sufficient to pay all matured
installments of interest and principal due otherwise than by acceleration has
been deposited with the Debenture Trustee.
 
  The holders of a majority in aggregate outstanding principal amount of the
Junior Subordinated Debentures affected thereby may, on behalf of the holders
of all the Junior Subordinated Debentures, waive any past default, except a
default in the payment of principal or interest (unless such default has been
cured and a sum sufficient to pay all matured installments of interest and
principal due otherwise than by acceleration has been deposited with the
Debenture Trustee) or a default in respect of a covenant or provision which
under the Indenture cannot be modified or amended without the consent of the
holder of each outstanding Junior Subordinated Debenture.
 
ENFORCEMENT OF CERTAIN RIGHTS BY HOLDERS OF CAPITAL SECURITIES
 
  If a Debenture Event of Default has occurred and is continuing and such
event is attributable to the failure of FBS to pay interest or principal on
the Junior Subordinated Debentures on the date such interest or principal
 
                                      50
<PAGE>
 
is otherwise payable, a holder of Capital Securities may institute a Direct
Action. FBS may not amend the Indenture to remove the foregoing right to bring
a Direct Action without the prior written consent of the holders of all of the
Capital Securities. If the right to bring a Direct Action is removed following
the Exchange Offer, the Trust may become subject to the reporting obligations
under the Securities Exchange Act of 1934, as amended. Notwithstanding any
payments made to a holder of Capital Securities by FBS in connection with a
Direct Action, FBS shall remain obligated to pay the principal of or interest
on the Junior Subordinated Debentures, and FBS shall be subrogated to the
rights of the holder of such Capital Securities with respect to payments on
the Capital Securities to the extent of any payments made by FBS to such
holder in any Direct Action.
   
  The holders of the Capital Securities would not be able to exercise directly
any remedies, other than those set forth in the preceding paragraph, available
to the holders of the Junior Subordinated Debentures unless there shall have
been an Event of Default under the Trust Agreement. See "--Description of
Capital Securities--Events of Default; Notice."     
 
CONSOLIDATION, MERGER, SALE OF ASSETS AND OTHER TRANSACTIONS
 
  The Indenture provides that FBS shall not consolidate with or merge into any
other Person or convey, transfer or lease its properties and assets
substantially as an entirety to any Person, and no Person shall consolidate
with or merge into FBS or convey, transfer or lease its properties and assets
substantially as an entirety to FBS, unless (i) in case FBS consolidates with
or merges into another Person or conveys or transfers its properties and
assets substantially as an entirety to any Person, the successor Person is
organized under the laws of the United States or any state or the District of
Columbia, and such successor Person expressly assumes FBS's obligations on the
Junior Subordinated Debentures; (ii) immediately after giving effect thereto,
no Debenture Event of Default, and no event which, after notice or lapse of
time or both, would become a Debenture Event of Default, shall have happened
and be continuing; and (iii) certain other conditions as prescribed in the
Indenture are met.
 
  The general provisions of the Indenture do not afford holders of the Junior
Subordinated Debentures protection in the event of a highly leveraged or other
transaction involving FBS that may adversely affect holders of the Junior
Subordinated Debentures.
 
SATISFACTION AND DISCHARGE
 
  The Indenture provides that when, among other things, all Junior
Subordinated Debentures not previously delivered to the Debenture Trustee for
cancellation (i) have become due and payable or (ii) will become due and
payable at their Stated Maturity within one year, and FBS deposits or causes
to be deposited with the Debenture Trustee funds, in trust, for the purpose
and in an amount sufficient to pay and discharge the entire indebtedness on
the Junior Subordinated Debentures not previously delivered to the Debenture
Trustee for cancellation, for the principal (and premium, if any) and interest
to the date of the deposit or to the Stated Maturity, as the case may be, then
the Indenture will cease to be of further effect (except as to FBS's
obligations to pay all other sums due pursuant to the Indenture and to provide
the officers' certificates and opinions of counsel described therein), and FBS
will be deemed to have satisfied and discharged the Indenture.
 
SUBORDINATION
 
  In the Indenture, FBS has covenanted and agreed that any Junior Subordinated
Debentures issued thereunder will be subordinate and junior in right of
payment to all Senior and Subordinated Debt to the extent provided in the
Indenture. Upon any payment or distribution of assets to creditors upon any
liquidation, dissolution, winding up, reorganization, assignment for the
benefit of creditors, marshaling of assets or any bankruptcy, insolvency, debt
restructuring or similar proceedings in connection with any insolvency or
bankruptcy proceeding of FBS, the holders of Senior and Subordinated Debt will
first be entitled to receive payment in full of all Allocable Amounts (as
defined below) on such Senior and Subordinated Debt before the holders of
Junior Subordinated Debentures will be entitled to receive or retain any
payment in respect thereof.
 
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<PAGE>
 
  In the event of the acceleration of the maturity of Junior Subordinated
Debentures, the holders of all Senior and Subordinated Debt outstanding at the
time of such acceleration will first be entitled to receive payment in full of
all amounts due thereon (including any amounts due upon acceleration) before
the holders of Junior Subordinated Debentures will be entitled to receive or
retain any payment in respect of the Junior Subordinated Debentures.
 
  No payments on account of principal (or premium, if any) or interest, if
any, in respect of the Junior Subordinated Debentures may be made if there
shall have occurred and be continuing a default in any payment with respect to
Senior and Subordinated Debt, or an event of default with respect to any
Senior and Subordinated Debt resulting in the acceleration of the maturity
thereof, or if any judicial proceeding shall be pending with respect to any
such default.
 
  "Allocable Amounts," when used with respect to any Senior and Subordinated
Debt, means all amounts due or to become due on such Senior and Subordinated
Debt less, if applicable, any amount which would have been paid to, and
retained by, the holders of such Senior and Subordinated Debt (whether as a
result of the receipt of payments by the holders of such Senior and
Subordinated Debt from FBS or any other obligor thereon or from any holders
of, or trustee in respect of, other indebtedness that is subordinate and
junior in right of payment to such Senior and Subordinated Debt pursuant to
any provision of such indebtedness for the payment over of amounts received on
account of such indebtedness to the holders of such Senior and Subordinated
Debt or otherwise) but for the fact that such Senior and Subordinated Debt is
subordinate or junior in right of payment to (or subject to a requirement that
amounts received on such Senior and Subordinated Debt be paid over to obligees
on) trade accounts payable or accrued liabilities arising in the ordinary
course of business.
 
  "Debt" means with respect to any Person, whether recourse is to all or a
portion of the assets of such Person and whether or not contingent, (i) every
obligation of such Person for money borrowed; (ii) every obligation of such
Person evidenced by bonds, debentures, notes or other similar instruments,
including obligations incurred in connection with the acquisition of property,
assets or businesses; (iii) every reimbursement obligation of such Person with
respect to letters of credit, bankers' acceptances or similar facilities
issued for the account of such Person; (iv) every obligation of such Person
issued or assumed as the deferred purchase price of property or services (but
excluding trade accounts payable or accrued liabilities arising in the
ordinary course of business); (v) every capital lease obligation of such
Person; (vi) all indebtedness of such Person whether incurred on or prior to
the date of the Indenture or thereafter incurred, for claims in respect of
derivative products, including interest rate, foreign exchange rate and
commodity forward contracts, options and swaps and similar arrangements; and
(vii) every obligation of the type referred to in clauses (i) through (vi) of
another Person and all dividends of another Person the payment of which, in
either case, such Person has guaranteed or is responsible or liable, directly
or indirectly, as obligor or otherwise.
 
  "Senior and Subordinated Debt" means the principal of (and premium, if any)
and interest, if any (including interest accruing on or after the filing of
any petition in bankruptcy or for reorganization relating to FBS whether or
not such claim for post-petition interest is allowed in such proceeding), on
Debt of FBS, whether incurred on or prior to the date of the Indenture or
thereafter incurred, unless, in the instrument creating or evidencing the same
or pursuant to which the same is outstanding, it is provided that such
obligations are not superior in right of payment to the Junior Subordinated
Debentures or the Other Debentures; provided, however, that Senior and
Subordinated Debt shall not be deemed to include (i) any Debt of FBS which
when incurred and without respect to any election under Section 1111(b) of the
United States Bankruptcy Code of 1978, as amended, was without recourse to
FBS, (ii) any Debt of FBS to any of its subsidiaries, (iii) Debt to any
employee of FBS and (iv) any other debt securities issued pursuant to the
Indenture.
 
  FBS is a non-operating holding company and almost all of the operating
assets of FBS are owned by FBS's subsidiaries. FBS relies primarily on
dividends from such subsidiaries to meet its obligations for payment of
principal and interest on its outstanding debt obligations and corporate
expenses. FBS is a legal entity separate and distinct from its banking and
non-banking affiliates. The principal sources of FBS' income are dividends,
interest and fees from FBNA and the other banking and non-banking affiliates.
The bank subsidiaries of FBS,
 
                                      52
<PAGE>
 
including FBNA (the "Banks"), are subject to certain restrictions imposed by
federal law on any extensions of credit to, and certain other transactions
with, FBS and certain other affiliates, and on investments in stock or other
securities thereof. Such restrictions prevent FBS and such other affiliates
from borrowing from the Banks unless the loans are secured by various types of
collateral. Further, such secured loans, other transactions and investments by
any of the Banks are generally limited in amount as to FBS and as to each of
such other affiliates to 10% of such Bank's capital and surplus and as to FBS
and all of such other affiliates to an aggregate of 20% of such Bank's capital
and surplus. In addition, payment of dividends to FBS by the subsidiary banks
is subject to ongoing review by banking regulators and is subject to various
statutory limitations and in certain circumstances requires approval by
banking regulatory authorities. Accordingly, the Junior Subordinated
Debentures will be effectively subordinated to all existing and future
liabilities of FBS's subsidiaries. Holders of Junior Subordinated Debentures
should look only to the assets of FBS for payments of interest and principal
and premium, if any.
 
  The Indenture places no limitation on the amount of additional Senior and
Subordinated Debt that may be incurred by FBS. FBS expects from time to time
to incur additional indebtedness constituting Senior and Subordinated Debt.
 
RESTRICTIONS ON TRANSFER
 
  The Junior Subordinated Debentures will be issued, and may be transferred
only, in minimum denominations of not less than $100,000 and multiples of
$1,000 in excess thereof. Any transfer, sale or other disposition of Junior
Subordinated Debentures in a denomination of less than $100,000 shall be
deemed to be void and of no legal effect whatsoever. Any such transferee shall
be deemed not to be the holder of such Junior Subordinated Debentures for any
purpose, including but not limited to the receipt of payments on such Junior
Subordinated Debentures, and such transferee shall be deemed to have no
interest whatsoever in such Junior Subordinated Debentures.
 
GOVERNING LAW
 
  The Indenture and the Junior Subordinated Debentures will be governed by and
construed in accordance with the laws of the State of New York.
 
INFORMATION CONCERNING THE DEBENTURE TRUSTEE
 
  The Debenture Trustee is subject to all the duties and responsibilities
specified with respect to an indenture trustee under the Trust Indenture Act.
Subject to such provisions, the Debenture Trustee is under no obligation to
exercise any of the powers vested in it by the Indenture at the request of any
holder of Junior Subordinated Debentures, unless offered reasonable indemnity
by such holder against the costs, expenses and liabilities which might be
incurred thereby. The Debenture Trustee is not required to expend or risk its
own funds or otherwise incur personal financial liability in the performance
of its duties if the Debenture Trustee reasonably believes that repayment or
adequate indemnity is not reasonably assured to it.
 
                           DESCRIPTION OF GUARANTEE
 
  The Old Guarantee was executed and delivered by FBS concurrently with the
issuance by the Trust of the Old Capital Securities for the benefit of the
holders from time to time of the Capital Securities. As soon as practicable
after the date hereof, the Old Guarantee will be exchanged by FBS for the New
Guarantee. The Guarantee Agreement has been qualified under the Trust
Indenture Act. This summary of certain provisions of the Guarantee Agreement
does not purport to be complete and is subject to, and qualified in its
entirety by reference to, all of the provisions of the Guarantee Agreement,
including the definitions therein of certain terms, and the Trust Indenture
Act. The Guarantee Trustee will hold the Guarantee for the benefit of the
holders of the Capital Securities.
 
                                      53
<PAGE>
 
GENERAL
 
  FBS has irrevocably agreed (and under the New Guarantee will irrevocably
agree) to pay in full on a subordinated basis, to the extent set forth herein,
the Guarantee Payments (as defined below) to the holders of the Capital
Securities, as and when due, regardless of any defense, right of set-off or
counterclaim that the Trust may have or assert other than the defense of
payment. The following payments with respect to the Capital Securities, to the
extent not paid by or on behalf of the Trust (the "Guarantee Payments"), will
be subject to the Guarantee: (i) any accumulated and unpaid Distributions
required to be paid on Capital Securities, to the extent that the Trust has
funds on hand available therefor at such time, (ii) the applicable Redemption
Price with respect to Capital Securities called for redemption to the extent
that the Trust has funds on hand available therefor at such time, or (iii)
upon a voluntary or involuntary dissolution, winding up or liquidation of the
Trust, the lesser of (a) the Liquidation Distribution and (b) the amount of
assets of the Trust remaining available for distribution to holders of Capital
Securities. FBS's obligation to make a Guarantee Payment may be satisfied by
direct payment of the required amounts by FBS to the holders of the Capital
Securities or by causing the Trust to pay such amounts to such holders.
 
  The Guarantee will rank subordinate and junior in right of payment to all
Senior and Subordinated Debt. See "--Status of the Guarantee". Because FBS is
a holding company, the right of FBS to participate in any distribution of
assets of any subsidiary upon such subsidiary's liquidation or reorganization
or otherwise, is subject to the prior claims of creditors of that subsidiary,
except to the extent FBS may itself be recognized as a creditor of that
subsidiary. Accordingly, FBS's obligations under the Guarantee will be
effectively subordinated to all existing and future liabilities of FBS's
subsidiaries, and claimants should look only to the assets of FBS for payments
thereunder. See "First Bank System, Inc." The Guarantee does not limit the
incurrence or issuance of other secured or unsecured debt of FBS, including
Senior and Subordinated Debt, whether under the Indenture, any other indenture
that FBS may enter into in the future or otherwise.
 
  FBS has, through the Guarantee, the Guarantee Agreement, the Trust
Agreement, the Junior Subordinated Debentures, the Indenture and the Expense
Agreement, taken together, fully, irrevocably and unconditionally guaranteed
all of the Trust's obligations under the Capital Securities. No single
document standing alone or operating in conjunction with fewer than all of the
other documents constitutes such guarantee. It is only the combined operation
of these documents that has the effect of providing a full, irrevocable and
unconditional guarantee of the Trust's obligations under the Capital
Securities. See "Relationship Among the Capital Securities, the Junior
Subordinated Debentures and the Guarantee."
 
STATUS OF THE GUARANTEE
 
  The Guarantee will constitute an unsecured obligation of FBS and will rank
subordinate and junior in right of payment to all Senior and Subordinated Debt
in the same manner as Junior Subordinated Debentures.
 
  The Guarantee will rank pari passu with all Other Guarantees issued by FBS.
The Guarantee will constitute a guarantee of payment and not of collection
(i.e., the guaranteed party may institute a legal proceeding directly against
FBS to enforce its rights under the Guarantee without first instituting a
legal proceeding against any other person or entity). The Guarantee will be
held for the benefit of the holders of the Capital Securities. The Guarantee
will not be discharged except by payment of the Guarantee Payments in full to
the extent not paid by the Trust or upon distribution to the holders of the
Capital Securities of the Junior Subordinated Debentures. The Guarantee does
not place a limitation on the amount of additional Senior and Subordinated
Debt that may be incurred by FBS. FBS expects from time to time to incur
additional indebtedness constituting Senior and Subordinated Debt.
 
AMENDMENTS AND ASSIGNMENT
   
  Except with respect to any changes which do not materially adversely affect
the rights of holders of the Capital Securities (in which case no vote will be
required), the Guarantee Agreement may not be amended without the prior
approval of the holders of not less than a majority of the aggregate
Liquidation Amount of such outstanding Capital Securities. The manner of
obtaining any such approval will be as set forth under "--Description of
Capital Securities--Voting Rights; Amendment of the Trust Agreement." All
guarantees and agreements contained in the Guarantee Agreement shall bind the
successors, assigns, receivers, trustees and representatives of FBS and shall
inure to the benefit of the holders of the Capital Securities then
outstanding.     
 
                                      54
<PAGE>
 
EVENTS OF DEFAULT
 
  An event of default under the Guarantee Agreement will occur upon the
failure of FBS to perform any of its payment or other obligations thereunder.
The holders of not less than a majority in aggregate Liquidation Amount of the
Capital Securities have the right to direct the time, method and place of
conducting any proceeding for any remedy available to the Guarantee Trustee in
respect of the Guarantee or to direct the exercise of any trust or power
conferred upon the Guarantee Trustee under the Guarantee Agreement.
 
  Any holder of the Capital Securities may institute a legal proceeding
directly against FBS to enforce its rights under the Guarantee without first
instituting a legal proceeding against the Trust, the Guarantee Trustee or any
other person or entity.
 
  FBS, as guarantor, is required to file annually with the Guarantee Trustee a
certificate as to whether or not FBS is in compliance with all the conditions
and covenants applicable to it under the Guarantee Agreement.
 
CONSOLIDATION, MERGER, SALE OF ASSETS AND OTHER TRANSACTIONS
 
  The Guarantee Agreement provides that FBS shall not consolidate with or
merge into any other Person or convey, transfer or lease its properties and
assets substantially as an entirety to any Person, and no Person shall
consolidate with or merge into FBS or convey, transfer or lease its properties
and assets substantially as an entirety to FBS, unless (i) in case FBS
consolidates with or merges into another Person or conveys or transfers its
properties and assets substantially as an entirety to any Person, the
successor Person is organized under the laws of the United States or any state
or the District of Columbia, and such successor Person expressly assumes FBS's
obligations on the Guarantee; (ii) immediately after giving effect thereto, no
event of default under the Guarantee Agreement, and no event which, after
notice or lapse of time or both, would become an event of default under the
Guarantee Agreement, shall have happened and be continuing; and (iii) certain
other conditions as prescribed in the Guarantee Agreement are met.
 
INFORMATION CONCERNING THE GUARANTEE TRUSTEE
 
  The Guarantee Trustee, other than during the occurrence and continuance of a
default by FBS in performance of the Guarantee, undertakes to perform only
such duties as are specifically set forth in the Guarantee Agreement and,
after default with respect to the Guarantee, must exercise the same degree of
care and skill as a prudent person would exercise or use in the conduct of his
or her own affairs. Subject to this provision, the Guarantee Trustee is under
no obligation to exercise any of the powers vested in it by the Guarantee
Agreement at the request of any holder of the Capital Securities unless it is
offered reasonable indemnity against the costs, expenses and liabilities that
might be incurred thereby.
 
TERMINATION OF THE GUARANTEE
 
  The Guarantee will terminate and be of no further force and effect upon full
payment of the applicable Redemption Price of the Capital Securities, upon
full payment of the amounts payable upon liquidation of the Trust or upon
distribution of Junior Subordinated Debentures to the holders of the Capital
Securities. The Guarantee will continue to be effective or will be reinstated,
as the case may be, if at any time any holder of the Capital Securities must
restore payment of any sums paid under the Capital Securities or the
Guarantee.
 
GOVERNING LAW
 
  The Guarantee will be governed by and construed in accordance with the laws
of the State of New York.
 
THE EXPENSE AGREEMENT
 
  Pursuant to the Expense Agreement entered into by FBS under the Trust
Agreement, FBS irrevocably and unconditionally guaranteed to each person or
entity to whom the Trust becomes indebted or liable, the full payment of any
costs, expenses or liabilities of the Trust, other than obligations of the
Trust to pay to the holders of any Trust Securities or other similar interests
in the Trust of the amounts due such holders pursuant to the terms of the
Trust Securities or such other similar interests, as the case may be.
 
                                      55
<PAGE>
 
                       DESCRIPTION OF THE OLD SECURITIES
   
  The terms of the Old Securities are identical in all material respect to the
New Securities, except that (i) the Old Securities have not been registered
under the Securities Act, are subject to certain restrictions on transfer and
are entitled to certain rights under the applicable Registration Rights
Agreement (which rights will terminate upon consummation of the Exchange
Offer, except under limited circumstances); (ii) the New Capital Securities
will not provide for any increase in the Distribution rate thereon; and (iii)
the New Junior Subordinated Debentures will not provide for any increase in
the interest rate thereon. The Old Securities provide that, in the event that
the Exchange Offer is not consummated on or prior to June 24, 1997, or, in
certain limited circumstances, in the event a shelf registration statement
(the "Shelf Registration Statement") with respect to the resale of the Old
Capital Securities is not declared effective on or prior to May 24, 1997, then
interest will accrue (in addition to the stated interest rate on the Junior
Subordinated Debentures) at the rate of 0.25% per annum on the principal
amount of the Junior Subordinated Debentures and Distributions will accrue (in
addition to the stated Distribution rate on the Capital Securities) at the
rate of 0.25% per annum on the Liquidation Amount of the Capital Securities,
for the period from the occurrence of such event until such time as such
required Exchange Offer is consummated or any required Shelf Registration
Statement is effective. The New Securities are not, and upon consummation of
the Exchange Offer the Old Securities will not be, entitled to any such
additional interest or Distributions. Accordingly, holders of Old Capital
Securities should review the information set forth under "Risk Factors--
Certain Consequences of a Failure to Exchange Old Capital Securities" and
"Description of the New Securities."     
 
                RELATIONSHIP AMONG THE CAPITAL SECURITIES, THE
               JUNIOR SUBORDINATED DEBENTURES AND THE GUARANTEE
 
FULL AND UNCONDITIONAL GUARANTEE
   
  Payments of Distributions and other amounts due on the Capital Securities
(to the extent the Trust has funds available for the payment of such
Distributions) are irrevocably guaranteed by FBS as and to the extent set
forth under "Description of the New Securities--Description of Guarantee."
Taken together, FBS's obligations under the Junior Subordinated Debentures,
the Indenture, the Trust Agreement, the Expense Agreement, the Guarantee
Agreement and the Guarantee provide, in the aggregate, a full, irrevocable and
unconditional guarantee of payments of distributions and other amounts due on
the Capital Securities. No single document standing alone or operating in
conjunction with fewer than all of the other documents constitutes such
guarantee. It is only the combined operation of these documents that has the
effect of providing a full, irrevocable and unconditional guarantee of the
Trust's obligations under the Capital Securities. If and to the extent that
FBS does not make payments on the Junior Subordinated Debentures, the Trust
will not pay Distributions or other amounts due on the Capital Securities. The
Guarantee does not cover payment of Distributions when the Trust does not have
sufficient funds to pay such Distributions. In such event, the remedy of a
holder of Capital Securities is to institute a Direct Action. The obligations
of FBS under the Guarantee are subordinate and junior in right of payment to
all Senior and Subordinated Debt.     
 
SUFFICIENCY OF PAYMENTS
 
  As long as payments of interest and other payments are made when due on the
Junior Subordinated Debentures, such payments will be sufficient to cover
Distributions and other payments due on the Capital Securities, primarily
because (i) the aggregate principal amount or Prepayment Price of the Junior
Subordinated Debentures will be equal to the sum of the aggregate Liquidation
Amount or Redemption Price, as applicable, of the Capital Securities and
Common Securities; (ii) the interest rate and interest and other payment dates
on the Junior Subordinated Debentures will match the Distribution rate and
Distribution and other payment dates for the Trust Securities; (iii) FBS shall
pay for all and any costs, expenses and liabilities of the Trust except the
Trust's obligations to holders of Trust Securities under such Trust
Securities; and (iv) the Trust Agreement further provides that the Trust will
not engage in any activity that is not consistent with the limited purposes
thereof.
 
                                      56
<PAGE>
 
ENFORCEMENT RIGHTS OF HOLDERS OF CAPITAL SECURITIES
 
  A holder of any Capital Security may institute a legal proceeding directly
against FBS to enforce its rights under the Guarantee without first
instituting a legal proceeding against the Guarantee Trustee, the Trust or any
other person or entity.
 
  A default or event of default under any Senior and Subordinated Debt would
not constitute a default or Event of Default under the Trust Agreement.
However, in the event of payment defaults under, or acceleration of, Senior
and Subordinated Debt, the subordination provisions of the Indenture provide
that no payments may be made in respect of the Junior Subordinated Debentures
until such Senior and Subordinated Debt has been paid in full or any payment
default thereunder has been cured or waived. Failure to make required payments
on Junior Subordinated Debentures would constitute an Event of Default under
the Trust Agreement.
 
LIMITED PURPOSE OF THE TRUST
 
  The Capital Securities evidence a beneficial interest in the Trust, and the
Trust exists for the sole purpose of issuing the Capital Securities and Common
Securities, investing the proceeds of the Trust Securities in Junior
Subordinated Debentures and exchanging the Junior Subordinated Debentures in
the Exchange Offer pursuant to the Indenture. A principal difference between
the rights of a holder of a Capital Security and a holder of a Junior
Subordinated Debenture is that a holder of a Junior Subordinated Debenture is
entitled to receive from FBS the principal amount of and interest accrued on
Junior Subordinated Debentures held, while a holder of Capital Securities is
entitled to receive Distributions from the Trust (or from FBS under the
Guarantee) if and to the extent the Trust has funds available for the payment
of such Distributions.
 
RIGHTS UPON TERMINATION
   
  Upon any voluntary or involuntary termination, winding-up or liquidation of
the Trust involving the liquidation of the Junior Subordinated Debentures, the
holders of the Trust Securities will be entitled to receive, out of assets
held by the Trust, the Liquidation Distribution in cash. See "Description of
the New Securities--Description of Capital Securities--Liquidation of the
Trust and Distribution of Junior Subordinated Debentures." Upon any voluntary
or involuntary liquidation or bankruptcy of FBS, the Property Trustee, as
holder of the Junior Subordinated Debentures, would be a subordinated creditor
of FBS, subordinated in right of payment to all Senior and Subordinated Debt
as set forth in the Indenture, but entitled to receive payment in full of
principal and interest, before any stockholders of FBS receive payments or
distributions. Since FBS is the guarantor under the Guarantee and has agreed
to pay for all costs, expenses and liabilities of the Trust (other than the
Trust's obligations to the holders of its Trust Securities), the positions of
a holder of Capital Securities and a holder of Junior Subordinated Debentures
relative to other creditors and to stockholders of FBS in the event of
liquidation or bankruptcy of FBS are expected to be substantially the same.
    
                    CERTAIN FEDERAL INCOME TAX CONSEQUENCES
 
  The following is a summary of the principal United States federal income tax
consequences of the purchase, ownership and disposition of Capital Securities.
This summary only addresses the tax consequences to a person that acquires
Capital Securities on their original issue at their original offering price.
This summary does not address all tax consequences that may be applicable to
beneficial owners of Capital Securities, nor does it address the tax
consequences to (i) persons that may be subject to special treatment under
United States federal income tax law, such as banks, insurance companies,
thrift institutions, regulated investment companies, real estate investment
trusts, tax-exempt organizations and dealers in securities or currencies, (ii)
persons that will hold Capital Securities as part of a position in a
"straddle" or as part of a "hedging," "conversion" or other integrated
investment transaction for federal income tax purposes, (iii) persons whose
functional currency is not the United States dollar or (iv) persons that do
not hold Capital Securities as capital assets.
 
 
                                      57
<PAGE>
 
  The statements of law or legal conclusion set forth in this summary
constitute the opinion of Davis Polk & Wardwell, special tax counsel to FBS
and the Trust. This summary is based upon the Internal Revenue Code of 1986,
as amended (the "Code"), Treasury Regulations, Internal Revenue Service
rulings and pronouncements and judicial decisions now in effect, all of which
are subject to change at any time. Such changes may be applied retroactively
in a manner that could cause the tax consequences to vary substantially from
the consequences described below, possibly adversely affecting a beneficial
owner of Capital Securities. In particular, legislation has been proposed that
could adversely affect FBS's ability to deduct interest on the Junior
Subordinated Debentures, which may in turn permit FBS to cause a redemption of
the Capital Securities. See "--Possible Tax Law Changes." The authorities on
which this summary is based are subject to various interpretations, and it is
therefore possible that the federal income tax treatment of the purchase,
ownership and disposition of Capital Securities may differ from the treatment
described below.
 
  PROSPECTIVE INVESTORS ARE ADVISED TO CONSULT WITH THEIR OWN TAX ADVISORS IN
LIGHT OF THEIR OWN PARTICULAR CIRCUMSTANCES AS TO THE FEDERAL TAX CONSEQUENCES
OF THE PURCHASE, OWNERSHIP AND DISPOSITION OF CAPITAL SECURITIES, AS WELL AS
THE EFFECT OF ANY STATE, LOCAL OR FOREIGN TAX LAWS.
 
EXCHANGE OF CAPITAL SECURITIES
   
  The exchange of Old Capital Securities for New Capital Securities will not
be a taxable event to holders for federal income tax purposes. Accordingly a
holder will have the same adjusted basis and holding period in the New Capital
Securities as the holder had in the Old Capital Securities immediately before
the exchange.     
 
CLASSIFICATION OF THE TRUST
 
  In connection with the issuance of the Old Capital Securities, Davis Polk &
Wardwell has rendered its opinion to the effect that, under then current law
and assuming compliance with the terms of the Trust Agreement, and based on
certain facts and assumptions contained in such opinion, the Trust will be
classified as a grantor trust and not as an association taxable as a
corporation for United States federal income tax purposes. As a result, each
beneficial owner of Capital Securities (a "Securityholder") will be treated as
owning an undivided beneficial interest in the Junior Subordinated Debentures.
Accordingly, each Securityholder will be required to include in its gross
income its pro rata share of income on the Junior Subordinated Debentures. See
"--Interest Income and Original Issue Discount." No amount included in income
with respect to the Capital Securities will be eligible for the dividends-
received deduction.
 
INTEREST INCOME AND ORIGINAL ISSUE DISCOUNT
 
  FBS believes that the likelihood of its exercising its option to defer
payments of interest is "remote" because exercising that option would prevent
FBS from declaring dividends on its common stock. Thus, in the opinion of
special tax counsel to FBS, based on regulations issued by the U.S. Treasury
Department on June 14, 1996, the Junior Subordinated Debentures will not be
treated as issued with original issue discount ("OID") for federal income tax
purposes and each Securityholder will be required to include interest payments
(other than an amount of the first interest payment attributable to pre-
issuance accrued interest, which a Securityholder may treat as a reduction of
the issue price of the Junior Subordinated Debentures rather than as gross
income) in taxable income under its own method of accounting (i.e., cash or
accrual) instead of under the daily economic accrual rules for OID
instruments.
 
  Under the new regulations, however, if FBS exercises its right to defer
payments of interest, the Junior Subordinated Debentures will become OID
instruments, and all Securityholders (including those Securityholders that
otherwise report income based on the cash method of accounting) will be
required to accrue interest on a daily basis during an Extension Period even
though FBS will not pay the interest in cash until the end of the Extension
Period. A Securityholder who disposes of the Capital Securities during an
Extension Period may suffer a loss because the market value of the Capital
Securities will likely fall if FBS exercises its option to defer
 
                                      58
<PAGE>
 
payments of interest on the Junior Subordinated Debentures. Furthermore, the
market value of the Capital Securities may not reflect the accumulated
distributions that will be paid at the end of the Extension Period, and a
Securityholder who sells the Capital Securities during the Extension Period
will not receive from FBS any cash related to the interest income the
Securityholder accrued and included in its taxable income under the OID rules
(because the cash attributable to the interest will be paid to the holder of
record at the end of the Extension Period).
 
  If the Junior Subordinated Debentures become OID instruments (i.e., if FBS
ever exercises its right to defer payments of interest), the Debentures will
be taxed as OID instruments for as long as they remain outstanding. Thus, even
after the end of the Extension Period, all Securityholders will be required to
continue accruing interest on the Junior Subordinated Debentures on a daily
basis, regardless of their method of accounting. Under the OID rules, a
Securityholder would accrue an amount of interest income each year that
approximates the interest payments called for under the terms of the Junior
Subordinated Debentures and actual cash payments of interest on the Junior
Subordinated Debentures would not be reported separately as taxable income.
 
  The new regulations have not yet been addressed in any rulings or other
interpretations by the IRS, and it is possible that the IRS could take a
position contrary to special counsel's interpretation.
 
DISTRIBUTION OF JUNIOR SUBORDINATED DEBENTURES TO HOLDERS OF CAPITAL
SECURITIES
   
  A distribution by the Trust of the Junior Subordinated Debentures as
described under the caption "Description of the New Securities--Description of
Capital Securities--Liquidation of the Trust and Distribution of Junior
Subordinated Debentures" must be non-taxable and such a distribution will
result in the Securityholder receiving directly his pro rata share of the
Junior Subordinated Debentures previously held indirectly through the Trust,
with a holding period and aggregate tax basis equal to the holding period and
aggregate tax basis such Securityholder had in its Capital Securities before
such distribution. A Securityholder will recognize interest income in respect
of Junior Subordinated Debentures received from the Trust in the manner
described above under "--Interest Income and Original Issue Discount."     
 
SALES OR REDEMPTION OF CAPITAL SECURITIES
 
  Gain or loss will be recognized by a Securityholder on a sale of Capital
Securities (including a redemption for cash) in an amount equal to the
difference between the amount realized (which for this purpose, will exclude
amounts attributable to accrued interest or OID not previously included in
income) and the Securityholder's adjusted tax basis in the Capital Securities
sold or so redeemed. Gain or loss recognized by a Securityholder on Capital
Securities held for more than one year will generally be taxable as long-term
capital gain or loss. Amounts attributable to accrued interest with respect to
a Securityholder's pro rata share of the Junior Subordinated Debentures not
previously included in income will be taxable as ordinary income.
 
BACKUP WITHHOLDING TAX AND INFORMATION REPORTING
 
  The Trust will report the interest and original issue discount (if any) that
accrued during the year with respect to the Junior Subordinated Debentures,
and any gross proceeds received by the Trust from the retirement or redemption
of the Junior Subordinated Debentures, annually to the holders of record of
the Capital Securities and the Internal Revenue Service. The Trust currently
intends to deliver such reports to holders of record prior to January 31
following each calendar year. It is anticipated that persons who hold Capital
Securities as nominees for beneficial holders will report the required tax
information to beneficial holders on Form 1099.
 
  Payments made on, and proceeds from the sale of Capital Securities may be
subject to a "backup" withholding tax of 31% unless the holder complies with
certain identification requirements. Any withheld amounts will generally be
allowed as a credit against the holder's federal income tax, provided the
required information is timely filed with the Internal Revenue Service.
 
 
                                      59
<PAGE>
 
UNITED STATES ALIEN SECURITYHOLDERS
   
  For purposes of this discussion, a United States Alien Securityholder is any
corporation, individual, partnership, estate or trust that for United States
federal income tax purposes, is a foreign corporation, a non-resident alien
individual, a foreign partnership or a non-resident fiduciary of a foreign
estate or trust. This discussion assumes that income with respect to the
Capital Securities is not effectively connected with a trade or business in
the United States in which the United States Alien Securityholder is engaged.
    
  Under present United States federal income tax law:
 
    (i) payments by the Trust or any of its paying agents to any holder of
  Capital Securities who or which is a United States Alien Securityholder
  will not be subject to United States federal withholding tax, provided that
  (a) the beneficial owner of the Capital Securities does not actually or
  constructively own 10% or more of the total combined voting power of all
  classes of stock of FBS entitled to vote, (b) the beneficial owner of the
  Capital Securities is not a controlled foreign corporation that is related
  to FBS through stock ownership, and (c) either (A) the beneficial owner of
  the Capital Securities certifies to the Trust or its agent, under penalties
  of perjury, that it is not a United States Securityholder and provides its
  name and address or (B) a securities clearing organization, bank or other
  financial institution that holds customers' securities in the ordinary
  course of its trade or business (a "Financial Institution") and holds the
  Capital Securities certifies to the Trust or its agent under penalties of
  perjury that such statement has been received from the beneficial owner by
  it or by a Financial Institution between it and the beneficial owner and
  furnishes the Trust or its agent with a copy thereof; and
     
    (ii) a United States Alien Securityholder of Capital Securities generally
  will not be subject to United States federal withholding or income tax on
  any gain realized upon the sale or other disposition of Capital Securities.
      
POSSIBLE TAX LAW CHANGES
   
  On March 19, 1996, the Revenue Reconciliation Bill of 1996 (the "Bill"), the
revenue portion of President Clinton's budget proposal, was released. The Bill
would, among other things, deny interest deductions for interest on an
instrument issued by a corporation that has a maximum term of more than 20
years and that is not shown as indebtedness on the separate balance sheet of
the issuer or, where the instrument is issued to a related party (other than a
corporation), where the holder or some other related party issues a related
instrument that is not shown as indebtedness on the issuer's consolidated
balance sheet. The above-described provision of the Bill was proposed to be
effective generally for instruments issued on or after December 7, 1995. If
such provision were to apply to the Junior Subordinated Debentures, FBS would
be unable to deduct interest on the Junior Subordinated Debentures. However,
on March 29, 1996, the Chairmen of the Senate Finance and House Ways and Means
Committees issued a joint statement to the effect that it was their intention
that the effective date of the President's legislative proposals, if adopted,
will be no earlier than the date of appropriate Congressional action. The
proposal was not enacted in the recently concluded session of Congress.
However, there can be no assurance that future legislative proposals will not
affect the ability of FBS to deduct interest on the Junior Subordinated
Debentures. Such a change could give rise to a Tax Event, which may permit FBS
to cause a redemption of the Capital Securities. See "Description of the New
Securities--Description of Capital Securities--Redemption" and "Description of
Junior Subordinated Debentures--Tax Event Prepayment."     
 
                                      60
<PAGE>
 
                             ERISA CONSIDERATIONS
 
GENERAL
 
  A fiduciary of an employee benefit plan subject to Title I of the Employee
Retirement Income Security Act of 1974, as amended ("ERISA") should consider
fiduciary standards under ERISA in the context of the particular circumstances
of such plan before authorizing an investment in the Capital Securities or the
Exchange Capital Securities. Such fiduciary should consider whether the
investment satisfies ERISA's diversification and prudence requirements,
whether the investment constitutes unauthorized delegation of fiduciary
authority and whether the investment is in accordance with the documents and
instruments governing the plan. In addition, ERISA and the Code prohibit a
wide range of transactions ("Prohibited Transactions") involving the assets of
a plan subject to ERISA or the assets of an individual retirement account or
plan subject to Section 4975 of the Code (hereinafter an "ERISA Plan") and
persons who have certain specified relationships to the ERISA Plan ("parties
in interest," within the meaning of ERISA, and "disqualified persons," within
the meaning of the Code). Such transactions may require "correction" and may
cause the ERISA Plan fiduciary to incur certain liabilities and the parties in
interest or disqualified persons to be subject to excise taxes.
 
  The acquisition of any Capital Security by any person who is using for such
acquisition the assets of an ERISA Plan shall constitute a representation by
such person to FBS that (i) if FBS is a "party in interest" or a "disqualified
person" with respect to such ERISA Plan, then such security is being acquired
pursuant to an exemption from the Prohibited Transaction rules under ERISA and
the Code, and (ii) FBS is not a "fiduciary," within the meaning of Section
3(21) of ERISA and the regulations thereunder, with respect to such person's
interest in the Capital Securities or the Junior Subordinated Debentures.
 
  Governmental plans and certain church plans (each as defined under ERISA)
are not subject to the Prohibited Transaction rules. Such plans may, however,
be subject to federal, state or local laws or regulations which may affect
their investment in the Capital Securities. Any fiduciary of such a
governmental or church plan considering an investment in the Capital
Securities should determine the need for, and the availability, if necessary,
of any exemptive relief under such laws or regulations.
 
  THE DISCUSSION HEREIN OF ERISA IS GENERAL IN NATURE AND IS NOT INTENDED TO
BE ALL INCLUSIVE. ANY FIDUCIARY OF AN ERISA PLAN, GOVERNMENTAL PLAN OR CHURCH
PLAN CONSIDERING AN INVESTMENT IN THE CAPITAL SECURITIES SHOULD CONSULT WITH
ITS LEGAL ADVISORS REGARDING THE CONSEQUENCES OF SUCH INVESTMENT.
 
PROHIBITED TRANSACTIONS
 
  FBS may be a party in interest or a disqualified person with respect to an
ERISA Plan investing in the Capital Securities, and, therefore, such
investments by an ERISA Plan may give rise to a Prohibited Transaction.
Consequently, before investing in the Capital Securities, any person who is,
or who in acquiring such Capital Securities is using the assets of, an ERISA
Plan should determine that either a statutory or an administrative exemption
from the Prohibited Transaction rules discussed below or otherwise available
is applicable to such person's investment in the Capital Securities, or that
its investment in such securities will not result in a Prohibited Transaction.
 
  Certain statutory or administrative exemptions from the Prohibited
Transaction rules under ERISA and the Code may be available to an ERISA Plan
which is investing in the Capital Securities. Included among these exemptions
are: Prohibited Transaction Class Exemption ("PTE") 90-1, regarding
investments by insurance company pooled separate accounts; PTE 91-38,
regarding investments by bank collective investment funds; PTE 84-14,
regarding transactions effected by qualified professional asset managers; PTE
96-23, regarding transactions effected by in-house asset managers; or PTE 95-
60, regarding investments by insurance company general accounts.
 
TRUST ASSETS AS "PLAN ASSETS"
 
  The Department of Labor has issued final regulations (the "Regulations") as
to what constitutes assets of an employee benefit plan ("plan asset") under
ERISA. The Regulations provide that, as a general rule, when an
 
                                      61
<PAGE>
 
ERISA Plan acquires an equity interest in an entity and such interest does not
represent a "publicly offered security" nor a security issued by an investment
company registered under the Investment Company Act of 1940, the ERISA Plan's
assets include both the equity interest and an undivided interest in each of
the underlying assets of the entity, unless it is established either that the
entity is an operating company or that equity participation in the entity by
"benefit plan investors" is not "significant." For purposes of the
Regulations, the Trust will not be an investment company nor an operating
company and the Capital Securities will not constitute a "publicly offered
security."
 
  Under the Regulations, equity participation by benefit plan investors will
not be considered "significant" on any date only if, immediately after the
most recent acquisition of Capital Securities, the aggregate interest in the
Capital Securities held by benefit plan investors will be less than 25% of the
value of the Capital Securities. Although it is possible that the equity
participation by benefit plan investors on any date will not be "significant"
for purposes of the Regulations, such result cannot be assured. Consequently,
if ERISA Plans purchase the Capital Securities, the Trust's assets could be
deemed to be "plan assets" of such ERISA Plans for purposes of the fiduciary
responsibility provisions of ERISA and the Code. Under ERISA, any person who
exercises any authority or control respecting the management or disposition of
the assets of an ERISA Plan is considered to be a fudiciary of such ERISA
Plan. For example, the Property Trustee could therefore become a fiduciary of
the ERISA Plans that invest in the Capital Securities and be subject to the
general fiduciary requirements of ERISA in exercising its authority with
respect to the management of the assets of the Trust. However, the Property
Trustee will have only limited discretionary authority with respect to the
Trust's assets and the remaining functions and responsibilities performed by
the Property Trustee will be for the most part custodial and ministerial in
nature. Inasmuch as the Property Trustee or another person with authority or
control respecting the management or disposition of the Trust assets may
become a fiduciary with respect to the ERISA Plans that will purchase the
Capital Securities, there may be an improper delegation by such ERISA Plans of
the responsibility to manage plan assets.
 
  The New Capital Securities may qualify as "publicly offered securities"
under the Regulations if at the time of the Exchange Offer they are also
"widely held" and "freely transferable." Under the Regulations, a class of
securities is "widely held" only if it is a class of securities that is owned
by 100 or more investors independent of the issuer and of one another.
Although it is possible that at the time of the Exchange Offer the New Capital
Securities will be "widely held," such result cannot be assured. Whether a
security is "freely transferable" for purposes of the Regulations is a factual
question to be determined on the basis of all relevant facts and
circumstances. If at the time of the Exchange Offer the New Capital Securities
qualify as "publicly offered securities," the assets of the Trust should not
be "plan assets" as of such time. If at the time of the Exchange Offer the New
Capital Securities do not qualify as "publicly offered securities," the "plan
asset" considerations discussed in the immediately preceding paragraph in
connection with the Capital Securities could also be applicable in connection
with the investment by ERISA Plans in the New Capital Securities.
 
                             PLAN OF DISTRIBUTION
   
  Each broker-dealer that receives New Capital Securities for its own account
in connection with the Exchange Offer must acknowledge that it will deliver a
prospectus in connection with any resale of such New Capital Securities. This
Prospectus, as it may be amended or supplemented from time to time, may be
used by Participating Broker-Dealers during the period referred to below in
connection with resales of New Capital Securities received in exchange for Old
Capital Securities if such Old Capital Securities were acquired by such
Participating Broker-Dealers for their own accounts as a result of market-
making activities or other trading activities. The Company has agreed that
this Prospectus, as it may be amended or supplemented from time to time, may
be used by a Participating Broker-Dealer in connection with resales of such
New Capital Securities for a period ending 90 days after the Expiration Date
(subject to extension under certain limited circumstances described herein)
or, if earlier, when all such New Capital Securities have been disposed of by
such Participating Broker-Dealer. See "The Exchange Offer--Resales of New
Capital Securities." Neither FBS nor the Trust will     
 
                                      62
<PAGE>
 
receive any cash proceeds from the issuance of the New Capital Securities
offered hereby. New Capital Securities received by broker-dealers for their
own accounts in connection with the Exchange Offer may be sold from time to
time in one or more transactions in the over-the-counter market, in negotiated
transactions, through the writing of options on the New Capital Securities or
a combination of such methods of resale, at market prices prevailing at the
time of resale, at prices related to such prevailing market prices or at
negotiated prices. Any such resale may be made directly to purchasers or to or
through brokers or dealers who may receive compensation in the form of
commissions or concessions from any such broker-dealer and/or the purchasers
of any such New Capital Securities. Any broker-dealer that resells New Capital
Securities that were received by it for its own account in connection with the
Exchange Offer and any broker or dealer that participates in a distribution of
such New Capital Securities may be deemed to be an "underwriter" within the
meaning of the Securities Act, and any profit on any such resale of New
Capital Securities and any commissions or concessions received by any such
persons may be deemed to be underwriting compensation under the Securities
Act. The Letter of Transmittal states that by acknowledging that it will
deliver and by delivering a prospectus, a broker-dealer will not be deemed to
admit that it is an "underwriter" within the meaning of the Securities Act.
                         
                      VALIDITY OF THE NEW SECURITIES     
   
  Certain matters of Delaware law relating to the validity of the New Capital
Securities, the enforceability of the Trust Agreement and the formation of the
Trust will be passed upon by Richards, Layton & Finger, P.A., Wilmington,
Delaware, special Delaware Counsel to FBS and the Trust. The validity of the
New Guarantee and the New Junior Subordinated Debentures will be passed upon
for FBS by Dorsey & Whitney LLP, Minneapolis, Minnesota. Certain matters
relating to United States federal income tax considerations will be passed
upon for FBS by Davis Polk & Wardwell, New York, New York.     
 
                                    EXPERTS
 
  The consolidated financial statements of FBS appearing in FBS's Annual
Report on Form 10-K for the year ended December 31, 1995, have been audited by
Ernst & Young LLP, independent auditors, as set forth in their report thereon
included therein and incorporated herein by reference. Such consolidated
financial statements are incorporated herein by reference in reliance upon
such report given upon the authority of such firm as experts in accounting and
auditing.
 
                                      63
<PAGE>
 
                                   PART II.
 
                    INFORMATION NOT REQUIRED IN PROSPECTUS
 
ITEM 20. INDEMNIFICATION OF DIRECTORS AND OFFICERS.
 
  Section 145 of the Delaware General Corporation Law contains detailed
provisions for indemnification of directors and officers of Delaware
corporations against expenses, judgments, fines and settlements in connection
with litigation.
 
  Article Ninth of FBS's Restated Certificate of Incorporation, as amended,
provides that a director shall not be liable to FBS or its stockholders for
monetary damages for a breach of fiduciary duty as a director, except for
liability (i) for any breach of the director's duty of loyalty to FBS or its
stockholders, (ii) for acts or omissions not in good faith or which involve
intentional misconduct or a knowing violation of law, (iii) under the Delaware
statutory provision making directors personally liable for unlawful dividends
or unlawful stock repurchases or redemptions or (iv) for any transaction for
which the directors derived an improper personal benefit.
 
  The Bylaws of FBS provide that the officers and directors of FBS and certain
others shall be indemnified to substantially the same extent permitted by
Delaware law.
 
  FBS maintains a standard policy of officers' and directors' insurance.
 
  In the Underwriting Agreement, a form of which is filed as Exhibit 1.1
hereto, the Underwriters will agree to indemnify, under certain conditions,
FBS, its directors, certain of its officers and persons who control FBS within
the meaning of the Securities Act of 1933, as amended (the "Act") against
certain liabilities.
 
  Under the Trust Agreement, FBS will agree to indemnify each of the Trustees
of the Issuer or any predecessor Trustee for the Issuer, and to hold the
Trustee harmless against, any loss, damage, claims, liability or expense
incurred without negligence or bad faith on its part, arising out of or in
connection with the acceptance or administration of the Trust Agreements,
including the costs and expenses of defending itself against any claim or
liability in connection with the exercise or performance of any of its powers
or duties under the Trust Agreements.
 
                                     II-1
<PAGE>
 
ITEM 21. EXHIBITS AND FINANCIAL STATEMENT SCHEDULES
 
<TABLE>   
<CAPTION>
 EXHIBIT
 -------
 <C>       <S>                                                              <C>
  4.1      Junior Subordinated Indenture between FBS and Wilmington Trust
           Company, as Debenture Trustee, dated November 15, 1996*
  4.2      Certificate of Trust of FBS Capital I*
  4.3      Trust Agreement between FBS, Wilmington Trust Company as Prop-
           erty Trustee and Delaware Trustee, and the Administrative
           Agents named therein, dated November 6, 1996*
  4.4      Amended and Restated Trust Agreement between FBS, Wilmington
           Trust Company, as Property Trustee and Delaware Trustee, and
           the Adminstrative Agents named therein*
  4.5      Form of Capital Security Certificate originally issued by FBS
           Capital I on November 26, 1996 (included as Exhibit B-1 of Ex-
           hibit 4.4)*
  4.6      Form of Capital Security Certificate to be issued by FBS Capi-
           tal I and registered under the Securities Act of 1933, as
           amended (included as Exhibit B-2 of Exhibit 4.4)*
  4.7      Form of Security for 8.09% Junior Subordinated Debenture due
           November 15, 2026 originally issued by FBS on November 26,
           1996*
  4.8      Form of Security for 8.09% Junior Subordinated Debenture due
           November 15, 2026 to be issued by FBS and registered under the
           Securities Act of 1933, as amended*
  4.9      Guarantee Agreement originally executed by FBS and Wilmington
           Trust Company, as Guarantee Trustee on November 26, 1996*
  4.10     Form of Guarantee Agreement to be entered into by FBS and Wil-
           mington Trust Company, as Guarantee Trustee, and registered
           under the Securities Act of 1933, as amended*
  4.11     Exchange and Registration Rights Agreement, relating to the
           Capital Securities, dated
           November 26, 1996 between FBS Capital I, FBS and Goldman,
           Sachs & Co., Merrill Lynch, Pierce Fenner & Smith Incorporat-
           ed, Morgan Stanley & Co. Incorporated, Lehman Brothers Inc.,
           Dain Bosworth Incorporated and Piper Jaffray Inc.*
  4.12     Exchange and Registration Rights Agreement, relating to the
           Guarantee, dated November 26, 1996 between FBS Capital I, FBS
           and Goldman, Sachs & Co., Merrill Lynch, Pierce Fenner & Smith
           Incorporated, Morgan Stanley & Co. Incorporated, Lehman Broth-
           ers Inc., Dain Bosworth Incorporated and Piper Jaffray Inc.*
  4.13     Exchange and Registration Rights Agreement, relating to the
           Junior Subordinated Debentures, dated November 26, 1996 be-
           tween FBS Capital I, FBS and Goldman, Sachs & Co., Merrill
           Lynch, Pierce Fenner & Smith Incorporated, Morgan Stanley &
           Co. Incorporated, Lehman Brothers Inc., Dain Bosworth Incorpo-
           rated and Piper Jaffray Inc.*
  5.1      Opinion and consent of Dorsey & Whitney LLP to FBS as to le-
           gality of the Junior Subordinated Debentures and the Guarantee
           to be issued by FBS*
  5.2      Opinion of special Delaware counsel as to legality of the Cap-
           ital Securities to be issued by FBS Capital I*
  8        Opinion of Special tax counsel as to certain federal income
           tax matters*
 12        Computation of ratio of earnings to fixed charges**
 23.1      Consent of Ernst & Young LLP**
 23.2      Consent of Dorsey & Whitney LLP (included in Exhibit 5.1)*
 23.3      Consent of Special Delaware Counsel (included in Exhibit 5.2)*
 24        Power of Attorney**
 25.1      Form T-1 Statement of Eligibility of Wilmington Trust Company
           to act as trustee under the Junior Subordinated Indenture*
</TABLE>    
 
 
                                      II-2
<PAGE>
 
<TABLE>   
<CAPTION>
 EXHIBIT
 -------
 <C>       <S>                                                             <C>
 25.2      Form T-1 Statement of Eligibility of Wilmington Trust Company
           to act as trustee under the Amended and Restated Trust Agree-
           ment*
 25.3      Form T-1 Statement of Eligibility of Wilmington Trust Company
           under the Guarantee for the benefit of the holders of Capital
           Securities*
 99.1      Form of Letter of Transmittal*
 99.2      Form of Notice of Guaranteed Delivery*
 99.3      Form of Exchange Agent Agreement*
</TABLE>    
- --------
   
* Filed herewith.     
          
**Previously filed.     
 
ITEM 22. UNDERTAKINGS
 
  Each of the undersigned Registrants, hereby undertakes that, for purposes of
determining any liability under the Securities Act of 1933, as amended, each
filing of a Registrant's annual report pursuant to Section 13(a) or Section
15(d) of the Securities Exchange Act of 1934 (and, where applicable, each
filing of an employee benefit plan's annual report pursuant to Section 15(d)
of the Securities Exchange Act of 1934) that is incorporated by reference in
this Registration Statement shall be deemed to be a new registration statement
relating to the securities offered herein, and the offering of such securities
at that time shall be deemed to be the initial bona fide offering thereof.
 
  Insofar as indemnification for liabilities arising under the Securities Act
of 1933 may be permitted to directors, officers and controlling persons of
each Registrant pursuant to the provisions, or otherwise, each Registrant has
been advised that in the opinion of the Securities and Exchange Commission
such indemnification is against public policy as expressed in the Act and is,
therefore, unenforceable. In the event that a claim for indemnification
against such liabilities (other than the payment by each Registrant of
expenses incurred or paid by a director, officer of controlling person of each
Registrant in the successful defense of any action, suit or proceeding) is
asserted by such director, officer or controlling person in connection with
the securities being registered, each Registrant will, unless in the opinion
of its counsel the matter has been settled by the controlling precedent,
submit to a court of appropriate jurisdiction the question whether such
indemnification by it is against public policy as expressed in the Act and
will be governed by the final adjudication of such issue.
 
  The undersigned registrants hereby undertake to respond to requests for
information that is incorporated by reference into the Prospectus pursuant to
Item 4, 10(b), 11 or 13 of this Form, within one business day of receipt of
such request, and to send the incorporated documents by first class mail or
other equally prompt means. This includes information contained in documents
filed subsequent to the effective date of the registration statement through
the date of responding to the request.
 
  The undersigned registrants hereby undertake to supply by means of a post-
effective amendment all information concerning a transaction, and the company
being acquired or involved therein, that was not the subject of and included
in the registration statement when it became effective.
 
                                     II-3
<PAGE>
 
                                  SIGNATURES
   
  PURSUANT TO THE REQUIREMENTS OF THE SECURITIES ACT OF 1933, THE REGISTRANT
CERTIFIES THAT IT HAS REASONABLE GROUNDS TO BELIEVE THAT IT MEETS ALL OF THE
REQUIREMENTS FOR FILING THIS AMENDMENT NO. 1 TO FORM S-4 AND HAS DULY CAUSED
THIS REGISTRATION STATEMENT TO BE SIGNED ON ITS BEHALF BY THE UNDERSIGNED,
THEREUNTO DULY AUTHORIZED, IN THE CITY OF MINNEAPOLIS, STATE OF MINNESOTA, ON
DECEMBER 20, 1996.     
 
                                          First Bank System, Inc.
 
                                                /s/ John F. Grundhofer
                                          By: _________________________________
                                                    John F. Grundhofer
                                              Chairman, President and Chief
                                                    Executive Officer
   
  PURSUANT TO THE REQUIREMENTS OF THE SECURITIES ACT OF 1933, THIS
REGISTRATION STATEMENT HAS BEEN SIGNED BY THE FOLLOWING PERSONS IN THE
CAPACITIES INDICATED BELOW ON DECEMBER 20, 1996.     
 
<TABLE>
<CAPTION>
                 SIGNATURE                                     TITLE
                 ---------                                     -----
 
 
<S>                                         <C>
        /s/ John F. Grundhofer              Chairman, President, Chief Executive
___________________________________________   Officer and Director (principal executive
            John F. Grundhofer                officer)
 
          /s/ Susan E. Lester               Executive Vice President and Chief
___________________________________________   Financial Officer (principal financial
              Susan E. Lester                 officer)
 
          /s/ David J. Parrin               Senior Vice President and Controller
___________________________________________   (principal accounting officer)
              David J. Parrin
 
          Arthur D. Collins, Jr.*           Director
___________________________________________
          Arthur D. Collins, Jr.
 
              Peter H. Coors*               Director
___________________________________________
              Peter H. Coors
 
              Roger L. Hale*                Director
___________________________________________
               Roger L. Hale
 
            Delbert W. Johnson*             Director
___________________________________________
            Delbert W. Johnson
 
             Norman M. Jones*               Director
___________________________________________
              Norman M. Jones
 
            Richard L. Knowlton*            Director
___________________________________________
</TABLE>    Richard L. Knowlton
 
 
 
                                     II-4
<PAGE>
 
<TABLE>
<CAPTION>
                 SIGNATURE                                     TITLE
                 ---------                                     -----
<S>                                         <C>
              Jerry W. Levin*               Director
___________________________________________
              Jerry W. Levin
 
             Kenneth A. Macke*              Director
___________________________________________
             Kenneth A. Macke
 
                                            Director
___________________________________________
          Marilyn Carlson Nelson
 
            Edward J. Phillips*             Director
___________________________________________
            Edward J. Phillips
 
             James J. Renier*               Director
___________________________________________
              James J. Renier
 
             S. Walter Richey*              Director
___________________________________________
             S. Walter Richey
 
                                            Director
___________________________________________
            Richard L. Robinson
 
             Richard L. Schall*             Director
___________________________________________
             Richard L. Schall
 
             Walter Scott, Jr.*             Director
___________________________________________
             Walter Scott, Jr.
 
</TABLE>
 
       /s/ David J. Parrin
*By: ________________________________
           David J. Parrin
           Attorney-in-fact
 
                                      II-5
<PAGE>
 
   
  PURSUANT TO THE REQUIREMENTS OF THE SECURITIES ACT OF 1933, FBS CAPITAL I
CERTIFIES THAT IT HAS REASONABLE GROUNDS TO BELIEVE THAT IT MEETS ALL THE
REQUIREMENTS FOR FILING THIS AMENDMENT NO. 1 TO FORM S-4 AND HAS DULY CAUSED
THIS REGISTRATION STATEMENT TO BE SIGNED ON ITS BEHALF BY THE UNDERSIGNED,
THEREUNTO DULY AUTHORIZED, IN THE CITY OF MINNEAPOLIS, AND STATE OF MINNESOTA
ON DECEMBER 20, 1996.     
 
                                       FBS Capital I
 
 
                                       By: First Bank System, Inc., as
                                        Depositor
 
 
                                                    /s/ David J. Parrin
                                       By: ____________________________________
                                               David J. Parrin Senior Vice
                                                President and Controller
 
 
                                      II-6
<PAGE>
 
                                 EXHIBIT INDEX
 
<TABLE>   
<CAPTION>
                                                                           PAGE
 EXHIBIT NO.                         DESCRIPTION                           NO.
 -----------                         -----------                           ----
 <C>         <S>                                                           <C>
  4.1        Junior Subordinated Indenture between FBS and Wilmington
             Trust Company, as Debenture Trustee, dated November 15,
             1996*
  4.2        Certificate of Trust of FBS Capital I*
  4.3        Trust Agreement between FBS, Wilmington Trust Company as
             Property Trustee and Delaware Trustee, and the Administra-
             tive Agents named therein, dated November 6, 1996*
  4.4        Amended and Restated Trust Agreement between FBS, Wilming-
             ton Trust Company, as Property Trustee and Delaware Trust-
             ee, and the Adminstrative Agents named therein*
  4.5        Form of Capital Security Certificate originally issued by
             FBS Capital I on November 26, 1996 (included as Exhibit B-1
             of Exhibit 4.4)*
  4.6        Form of Capital Security Certificate to be issued by FBS
             Capital I and registered under the Securities Act of 1933,
             as amended (included as Exhibit B-2 of Exhibit 4.4)*
  4.7        Form of Security for 8.09% Junior Subordinated Debenture
             due November 15, 2026 originally issued by FBS on November
             26, 1996*
  4.8        Form of Security for 8.09% Junior Subordinated Debenture
             due November 15, 2026 to be issued by FBS and registered
             under the Securities Act of 1933, as amended*
  4.9        Guarantee Agreement originally executed by FBS and Wilming-
             ton Trust Company, as Guarantee Trustee on November 26,
             1996*
  4.10       Form of Guarantee Agreement to be entered into by FBS and
             Wilmington Trust Company, as Guarantee Trustee, and regis-
             tered under the Securities Act of 1933, as amended*
  4.11       Exchange and Registration Rights Agreement, relating to the
             Capital Securities, dated
             November 26, 1996 between FBS Capital I, FBS and Goldman,
             Sachs & Co., Merrill Lynch, Pierce Fenner & Smith Incorpo-
             rated, Morgan Stanley & Co. Incorporated, Lehman Brothers
             Inc., Dain Bosworth Incorporated and Piper Jaffray Inc.*
  4.12       Exchange and Registration Rights Agreement, relating to the
             Guarantee, dated November 26, 1996 between FBS Capital I,
             FBS and Goldman, Sachs & Co., Merrill Lynch, Pierce Fenner
             & Smith Incorporated, Morgan Stanley & Co. Incorporated,
             Lehman Brothers Inc., Dain Bosworth Incorporated and Piper
             Jaffray Inc.*
  4.13       Exchange and Registration Rights Agreement, relating to the
             Junior Subordinated Debentures, dated November 26, 1996 be-
             tween FBS Capital I, FBS and Goldman, Sachs & Co., Merrill
             Lynch, Pierce Fenner & Smith Incorporated, Morgan Stanley &
             Co. Incorporated, Lehman Brothers Inc., Dain Bosworth In-
             corporated and Piper Jaffray Inc.*
  5.1        Opinion and consent of Dorsey & Whitney LLP to FBS as to
             legality of the Junior Subordinated Debentures and the
             Guarantee to be issued by FBS*
  5.2        Opinion of special Delaware counsel as to legality of the
             Capital Securities to be issued by FBS Capital I*
  8          Opinion of Special tax counsel as to certain federal income
             tax matters*
 12          Computation of ratio of earnings to fixed charges**
 23.1        Consent of Ernst & Young LLP**
 23.2        Consent of Dorsey & Whitney LLP (included in Exhibit 5.1)*
 23.3        Consent of Special Delaware Counsel (included in Exhibit
             5.2)*
 24          Power of Attorney**
 25.1        Form T-1 Statement of Eligibility of Wilmington Trust Com-
             pany to act as trustee under the Junior Subordinated Inden-
             ture*
</TABLE>    
<PAGE>
 
<TABLE>   
<CAPTION>
                                                                           PAGE
 EXHIBIT NO.                         DESCRIPTION                           NO.
 -----------                         -----------                           ----
 <C>         <S>                                                           <C>
 25.2        Form T-1 Statement of Eligibility of Wilmington Trust Com-
             pany to act as trustee under the Amended and Restated Trust
             Agreement*
 25.3        Form T-1 Statement of Eligibility of Wilmington Trust Com-
             pany under the Guarantee for the benefit of the holders of
             Capital Securities*
 99.1        Form of Letter of Transmittal*
 99.2        Form of Notice of Guaranteed Delivery*
 99.3        Form of Exchange Agent Agreement*
</TABLE>    
- --------
   
* Filed herewith.     
   
**Previously filed.     

<PAGE>
 
                                                                     Exhibit 4.1

________________________________________________________________________________


                            FIRST BANK SYSTEM, INC.



                                      TO



                           WILMINGTON TRUST COMPANY



                                    TRUSTEE


                         ____________________________


                         JUNIOR SUBORDINATED INDENTURE

                         DATED AS OF NOVEMBER 15, 1996


________________________________________________________________________________
<PAGE>
 
                            FIRST BANK SYSTEM, INC.

     Reconciliation and tie between the Trust Indenture Act of 1939 (including
cross-references to provisions of Sections 310 to and including 317 which,
pursuant to Section 318(c) of the Trust Indenture Act of 1939, as amended by the
Trust Reform Act of 1990, are a part of and govern the Indenture whether or not
physically contained therein) and the Junior Subordinated Indenture, dated as of
November 15, 1996.

<TABLE>
<CAPTION>
TRUST INDENTURE                                                     INDENTURE
  ACT SECTION                                                        SECTION
  -----------                                                        -------
<S>     <C>                                                       <C>
 
(S) 310 (a) (1), (2) and (5)....................................  Not Applicable
        (a) (3).................................................  Not Applicable
        (a) (4).................................................  Not Applicable
        (b).....................................................  6.8
        ........................................................  6.10
        (c).....................................................  Not Applicable
(S) 311 (a).....................................................  6.13(a)
        (b).....................................................  6.13(b)
        (b) (2).................................................  7.3(a) (2)
        ........................................................  7.3(a) (2)
(S) 312 (a).....................................................  7.1
        ........................................................  7.2(a)
        (b).....................................................  7.2(b)
        (c).....................................................  7.2(c)
(S) 313 (a).....................................................  7.3(a)
        (b).....................................................  7.3(b)
        (c).....................................................  7.3(a), 7.3(b)
        (d).....................................................  7.3(c)
(S) 314 (a) (1), (2) and (3)....................................  7.4
        (a) (4).................................................  10.5
        (b).....................................................  Not Applicable
        (c) (1).................................................  1.2
        (c) (2).................................................  1.2
        (c) (3).................................................  Not Applicable
        (d).....................................................  Not Applicable
        (e).....................................................  1.2
        (f).....................................................  Not Applicable
(S) 315 (a).....................................................  6.1(a)
        (b).....................................................  6.2
        ........................................................  7.3(a) (6)
        (c).....................................................  6.1(b)
</TABLE> 

                                      -i-
<PAGE>
 
<TABLE>
<CAPTION>
TRUST INDENTURE                                                     INDENTURE
  ACT SECTION                                                        SECTION
  -----------                                                        -------
<S>     <C>                                                       <C>
 
        (d).....................................................  6.1 (c)
        (d) (1).................................................  6.1(a) (1)
        (d) (2).................................................  6.1(c) (2)
        (d) (3).................................................  6.1(c) (3)
        (e).....................................................  5.14
(S) 316 (a).....................................................  1.1
        (a) (1) (A).............................................  5.12
        (a) (1) (B).............................................  5.13
        (a) (2).................................................  Not Applicable
        (b).....................................................  5.8
        (c).....................................................  1.4(f)
(S) 317 (a) (1).................................................  5.3
        (a) (2).................................................  5.4
        (b).....................................................  10.3
(S)318  (a).....................................................  1.7
</TABLE> 
- ------------------------
NOTE: This reconciliation and tie shall not, for any purpose, be deemed to be a
      part of the Junior Subordinated Indenture.

                                      -ii-
<PAGE>
 
                               TABLE OF CONTENTS

<TABLE> 
<S>                                                                                <C>
 
ARTICLE I    DEFINITIONS AND OTHER PROVISIONS OF GENERAL
             APPLICATION.........................................................   1
     SECTION 1.1.  Definitions...................................................   1
     SECTION 1.2.  Compliance Certificate and Opinions...........................  10
     SECTION 1.3.  Forms of Documents Delivered to Trustee.......................  11
     SECTION 1.4.  Acts of Holders...............................................  11
     SECTION 1.5.  Notices, Etc. to Trustee and Company..........................  14
     SECTION 1.6.  Notice to Holders; Waiver.....................................  14
     SECTION 1.7.  Conflict with Trust Indenture Act.............................  15
     SECTION 1.8.  Effect of Headings and Table of Contents......................  15
     SECTION 1.9.  Successors and Assigns........................................  15
     SECTION 1.10. Separability Clause...........................................  15
     SECTION 1.11. Benefits of Indenture.........................................  15
     SECTION 1.12. Governing Law.................................................  15
     SECTION 1.13. Non-Business Days.............................................  15
 
ARTICLE II   SECURITY FORMS......................................................  16
     SECTION 2.1.  Forms Generally...............................................  16
     SECTION 2.2.  Form of Face of Security......................................  17
     SECTION 2.3.  Form of Reverse of Security...................................  20
     SECTION 2.4.  Additional Provisions Required in Global Security.............  23
     SECTION 2.5.  Form of Trustee's Certificate of Authentication...............  24
 
ARTICLE III  THE SECURITIES......................................................  24
     SECTION 3.1.  Title and Terms...............................................  24
     SECTION 3.2.  Denominations.................................................  27
     SECTION 3.3.  Execution, Authentication, Delivery and Dating................  27
     SECTION 3.4.  Temporary Securities..........................................  29
     SECTION 3.5.  Registration, Transfer and Exchange...........................  29
     SECTION 3.6.  Mutilated, Destroyed, Lost and Stolen Securities..............  31
     SECTION 3.7.  Payment of Interest; Interest Rights Preserved................  32
     SECTION 3.8.  Persons Deemed Owners.........................................  34
     SECTION 3.9.  Cancellation..................................................  34
     SECTION 3.10. Computation of Interest.......................................  34
     SECTION 3.11. Deferrals of Interest Payment Dates...........................  34
     SECTION 3.12. Right of Set-Off..............................................  36
     SECTION 3.13. Agreed Tax Treatment..........................................  36
     SECTION 3.14. Shortening or Extension of Stated Maturity....................  36
     SECTION 3.15. CUSIP Numbers.................................................  36
</TABLE> 

                                      -i-
<PAGE>
 
<TABLE> 
<S>                                                                                <C>
 
ARTICLE IV   SATISFACTION AND DISCHARGE..........................................  37
     SECTION 4.1.  Satisfaction and Discharge of Indenture.......................  37
     SECTION 4.2.  Application of Trust Money....................................  38
 
ARTICLE V    REMEDIES............................................................  38
     SECTION 5.1.  Events of Default.............................................  38
     SECTION 5.2.  Acceleration of Maturity; Rescission and Annulment............  39
     SECTION 5.3.  Collection of Indebtedness and Suits for
                   Enforcement by Trustee........................................  41
     SECTION 5.4.  Trustee May File Proofs of Claim..............................  42
     SECTION 5.5.  Trustee May Enforce Claim Without Possession
                   of Securities.................................................  43
     SECTION 5.6.  Application of Money Collected................................  43
     SECTION 5.7.  Limitation on Suits...........................................  43
     SECTION 5.8.  Unconditional Right of Holders to Receive Principal,
                   Premium and Interest; Direct Action by Holders of
                   Capital Securities............................................  44
     SECTION 5.9.  Restoration of Rights and Remedies............................  45
     SECTION 5.10. Rights and Remedies Cumulative................................  45
     SECTION 5.11. Delay or Omission Not Waiver..................................  45
     SECTION 5.12. Control by Holders............................................  45
     SECTION 5.13. Waiver of Past Defaults.......................................  46
     SECTION 5.14. Undertaking for Costs.........................................  46
     SECTION 5.15. Waiver of Usury, Stay or Extension Laws.......................  47
 
ARTICLE VI   THE TRUSTEE.........................................................  47
     SECTION 6.1.  Certain Duties and Responsibilities...........................  47
     SECTION 6.2.  Notice of Defaults............................................  48
     SECTION 6.3.  Certain Rights of Trustee.....................................  49
     SECTION 6.4.  Not Responsible for Recitals or Issuance of Securities........  50
     SECTION 6.5.  May Hold Securities...........................................  50
     SECTION 6.6.  Money Held in Trust...........................................  50
     SECTION 6.7.  Compensation and Reimbursement................................  50
     SECTION 6.8.  Disqualification; Conflicting Interests.......................  51
     SECTION 6.9.  Corporate Trustee Required; Eligibility.......................  51
     SECTION 6.10. Resignation and Removal; Appointment of Successor.............  52
     SECTION 6.11. Acceptance of Appointment by Successor........................  53
     SECTION 6.12. Merger, Conversion, Consolidation or Succession
                   to Business...................................................  55
     SECTION 6.13. Preferential Collection of Claims Against Company.............  55
     SECTION 6.14. Appointment of Authenticating Agent...........................  55
</TABLE> 

                                      -ii-
<PAGE>
 
<TABLE> 
<S>                                                                                <C>
 
ARTICLE VII  HOLDERS' LISTS AND REPORTS BY TRUSTEE
             AND COMPANY.........................................................  57
     SECTION 7.1.  Company to Furnish Trustee Names and
                   Addresses of Holders..........................................  57
     SECTION 7.2.  Preservation of Information, Communications
                   to Holders....................................................  57
     SECTION 7.3.  Reports by Trustee............................................  58
     SECTION 7.4.  Reports by Company............................................  58
 
ARTICLE VIII CONSOLIDATION, MERGER, CONVEYANCE,
             TRANSFER OR LEASE...................................................  59
     SECTION 8.1.  Company May Consolidate, Etc., Only on
                   Certain Terms.................................................  59
     SECTION 8.2.  Successor Corporation Substituted.............................  60
 
ARTICLE IX   SUPPLEMENTAL INDENTURES.............................................  60
     SECTION 9.1.  Supplemental Indentures without Consent of Holders............  60
     SECTION 9.2.  Supplemental Indentures with Consent of Holders...............  62
     SECTION 9.3.  Execution of Supplemental Indentures..........................  63
     SECTION 9.4.  Effect of Supplemental Indentures.............................  64
     SECTION 9.5.  Conformity with Trust Indenture Act...........................  64
     SECTION 9.6.  Reference in Securities to Supplemental Indentures............  64
 
ARTICLE X    COVENANTS...........................................................  64
     SECTION 10.1. Payment of Principal, Premium and Interest....................  64
     SECTION 10.2. Maintenance of Office or Agency...............................  65
     SECTION 10.3. Money for Security Payments to be Held in Trust...............  65
     SECTION 10.4. Statement as to Compliance....................................  67
     SECTION 10.5. Waiver of Certain Covenants...................................  67
     SECTION 10.6. Additional Sums...............................................  67
     SECTION 10.7. Additional Covenants..........................................  68
 
ARTICLE XI   REDEMPTION OF SECURITIES............................................  69
     SECTION 11.1. Applicability of This Article.................................  69
     SECTION 11.2. Election to Prepay; Notice to Trustee.........................  69
     SECTION 11.3. Selection of Securities to be Redeemed........................  70
     SECTION 11.4. Notice of Redemption..........................................  70
     SECTION 11.5. Deposit of Redemption Price...................................  71
     SECTION 11.6. Payment of Securities Called for Redemption...................  71
     SECTION 11.7. Right of Redemption of Securities Initially
                   Issued to an FBS Trust........................................  72
</TABLE> 

                                     -iii-
<PAGE>
 
<TABLE> 
<S>                                                                                 <C>
 
ARTICLE XII   SINKING FUNDS.......................................................  72
     SECTION 12.1.  Applicability of Article......................................  72
     SECTION 12.2.  Satisfaction of Sinking Fund Payments with Securities.........  73
     SECTION 12.3.  Redemption of Securities for Sinking Fund.....................  73
 
ARTICLE XIII  SUBORDINATION OF SECURITIES.........................................  75
     SECTION 13.1.  Securities Subordinate to Senior and Subordinated Debt........  75
     SECTION 13.2.  Payment Over of Proceeds Upon Dissolution, Etc................  75
     SECTION 13.3.  Prior Payment to Senior and Subordinated
                    Debt Upon Acceleration of Securities..........................  76
     SECTION 13.4.  No Payment When Senior and
                    Subordinated Debt in Default..................................  77
     SECTION 13.5.  Payment Permitted If No Default...............................  78
     SECTION 13.6.  Subrogation to Rights of Holders of Senior and
                    Subordinated Debt.............................................  78
     SECTION 13.7.  Provisions Solely to Define Relative Rights...................  79
     SECTION 13.8.  Trustee to Effectuate Subordination...........................  79
     SECTION 13.9.  No Waiver of Subordination Provisions.........................  80
     SECTION 13.10. Notice to Trustee.............................................  80
     SECTION 13.11. Reliance on Judicial Order or Certificate of
                    Liquidating Agent.............................................  81
     SECTION 13.12. Trustee Not Fiduciary for Holders of
                    Senior and Subordinated Debt..................................  81
     SECTION 13.13. Rights of Trustee as Holder of Senior Debt;
                    Preservation of Trustee's Rights..............................  82
     SECTION 13.14. Article Applicable to Paying Agents...........................  82
     SECTION 13.15. Certain Conversions or Exchanges Seemed Payment...............  82
</TABLE>

                                      -iv-
<PAGE>
 
     JUNIOR SUBORDINATED INDENTURE, dated as of November 15, 1996, between
FIRST BANK SYSTEM, INC., a Delaware corporation (hereinafter called the
"Company") having its principal office at 601 Second Avenue South, Minneapolis,
Minnesota 55402, and WILMINGTON TRUST COMPANY, a Delaware banking corporation,
as Trustee (hereinafter called the "Trustee").

                            RECITALS OF THE COMPANY

     The Company has duly authorized the execution and delivery of this
Indenture to provide for the issuance from time to time of its unsecured junior
subordinated debt securities in series (hereinafter called the "Securities") of
substantially the tenor hereinafter provided, including, without limitation,
Securities issued to evidence loans made to the Company of the proceeds from the
issuance from time to time by one or more business trusts (each an "FBS Trust,"
and, collectively, the "FBS Trusts") of preferred trust interests in such Trusts
(the Capital Securities") and common interests in such Trusts (the "Common
Securities" and, collectively with the Capital Securities, the Trust
Securities), and to provide the terms and conditions upon which the Securities
are to be authenticated, issued and delivered.

     All things necessary to make the Securities, when executed by the Company
and authenticated and delivered hereunder and duly issued by the Company the
valid obligations of the Company, and to make this Indenture a valid agreement
of the Company, in accordance with their and its terms, have been done.

     NOW THEREFORE, THIS INDENTURE WITNESSETH:  For and in consideration of the
premises and the purchase of the Securities by the Holders thereof, it is
mutually covenanted and agreed, for the equal and proportionate benefit of all
Holders of the Securities or of any series thereof, as follows:

                                   ARTICLE I

            DEFINITIONS AND OTHER PROVISIONS OF GENERAL APPLICATION

Section 1.1.  Definitions.

     For all purposes of this Indenture, except as otherwise expressly provided
or unless the context otherwise requires:

     (1) The terms defined in this Article have the meanings assigned to them in
this Article, and include the plural as well as the singular;

     (2) All other terms used herein which are defined in the Trust Indenture
Act, either directly or by reference therein, have the meanings assigned to them
therein;
<PAGE>
 
     (3) All accounting terms not otherwise defined herein have the meanings
assigned to them in accordance with generally accepted accounting principles,
and the term "generally accepted accounting principles" with respect to any
computation required or permitted hereunder shall mean such accounting
principles which are generally accepted at the date or time of such computation;
provided, that when two or more principles are so generally accepted, it shall
mean that set of principles consistent with those in use by the Company; and

     (4) The words "herein," "hereof" and "hereunder" and other words of similar
import refer to this Indenture as a whole and not to any particular Article,
Section or other subdivision.

     "Act" when used with respect to any Holder has the meaning specified in
Section 1.4.

     "Additional Interest" means the interest, if any, that shall accrue on any
interest on the Securities of any series the payment of which has not been made
on the applicable Interest Payment Date and which shall accrue at the rate per
annum specified or determined as specified in such Security.

     "Additional Sums" has the meaning specified in Section 10.6.

     "Additional Taxes" means the sum of any additional taxes, duties and other
governmental charges to which an FBS Trust has become subject from time to time
as a result of a Tax Event.

     "Administrative Trustee" means, in respect of any FBS Trust, each Person
identified as an "Administrative Trustee" or an "Administrative Agent" in the
related Trust Agreement, solely in such Person's capacity as Administrative
Trustee or an Administrative Agent, as the case may be, of such FBS Trust under
such Trust Agreement and not in such Person's individual capacity, or any
successor administrative trustee or successor administrative agent, as the case
may be, appointed as therein provided.

     "Affiliate" of any specified Person means any other Person directly or
indirectly controlling or controlled by or under direct or indirect common
control with such specified Person; provided, however, no FBS Trust to which
Securities have been issued shall be deemed to be an Affiliate of the Company.
For the purposes of this definition, "control" when used with respect to any
specified Person means the power to direct the management and policies of such
Person, directly or indirectly, whether through the ownership of voting
securities, by contract or otherwise; and the terms "controlling" and
"controlled" have meanings correlative to the foregoing.

                                      -2-
<PAGE>
 
     "Allocable Amounts," when used with respect to any Senior and Subordinated
Debt, means all amounts due or to become due on such Senior and Subordinated
Debt less, if applicable, any amount which would have been paid to, and retained
by, the holders of such Senior and Subordinated Debt (whether as a result of the
receipt of payments by the holders of such Senior and Subordinated Debt from the
Company or any other obligor thereon or from any holders of, or trustee in
respect of, other indebtedness that is subordinate and junior in right of
payment to such Senior and Subordinated Debt pursuant to any provision of such
indebtedness for the payment over of amounts received on account of such
indebtedness to the holders of such Senior and Subordinated Debt or otherwise)
but for the fact that such Senior and Subordinated Debt is subordinate or junior
in right of payment to (or subject to a requirement that amounts received on
such Senior and Subordinated Debt be paid over to obligees on) trade accounts
payable or accrued liabilities arising in the ordinary course of business.

     "Authenticating Agent" means any Person authorized by the Trustee pursuant
to Section 6.14 to act on behalf of the Trustee to authenticate Securities of
one or more series.

     "Board of Directors" means either the board of directors of the Company or
any committee of that board duly authorized to act hereunder.

     "Board Resolution" means a copy of a resolution certified by the Secretary
or an Assistant Secretary of the Company to have been duly adopted by the Board
of Directors, or such committee of the Board of Directors or officers of the
Company to which authority to act on behalf of the Board of Directors has been
delegated, and to be in full force and effect on the date of such certification,
and delivered to the Trustee.

     "Business Day" means any day other than (i) a Saturday or Sunday, (ii) a
day on which banking institutions in The City of New York are authorized or
required by law or executive order to remain closed or (iii) a day on which the
Corporate Trust Office of the Trustee, or, with respect to the Securities of a
series initially issued to an FBS Trust, the principal office of the Property
Trustee under the related Trust Agreement, is closed for business.

     "Capital Securities" has the meaning specified in the first recital of this
Indenture.

     "Commission" means the Securities and Exchange Commission, as from time to
time constituted, created under the Exchange Act, or if at any time after the
execution of this instrument such Commission is not existing and performing the
duties now assigned to it under the Trust Indenture Act, then the body
performing such duties on such date.

                                      -3-
<PAGE>
 
     "Common Securities" has the meaning specified in the first recital of this
Indenture.

     "Common Stock" means the common stock, par value $1.25 per share, of the
Company.

     "Company" means the Person named as the "Company" in the first paragraph of
this instrument until a successor corporation shall have become such pursuant to
the applicable provisions of this Indenture, and thereafter "Company" shall mean
such successor corporation.

     "Company Request" and "Company Order" mean, respectively, the written
request or order signed in the name of the Company by the Chairman of the Board
of Directors, the Vice Chairman of the Board of Directors, its President or a
Vice President, and by its Treasurer, an Assistant Treasurer, its Secretary or
an Assistant Secretary of the Company, and delivered to the Trustee.

     "Corporate Trust Office" means the principal office of the Trustee at which
at any particular time its corporate trust business shall be administered.

     "Corporation" includes a corporation, association, company, joint-stock
company or business trust.

     "Debt" means, with respect to any Person, whether recourse is to all or a
portion of the assets of such Person and whether or not contingent, (i) every
obligation of such Person for money borrowed; (ii) every obligation of such
Person evidenced by bonds, debentures, notes or other similar instruments,
including obligations incurred in connection with the acquisition of property,
assets or businesses; (iii) every reimbursement obligation of such Person with
respect to letters of credit, bankers' acceptances or similar facilities issued
for the account of such Person; (iv) every obligation of such Person issued or
assumed as the deferred purchase price of property or services (but excluding
trade accounts payable or accrued liabilities arising in the ordinary course of
business); (v) every capital lease obligation of such Person; (vi) all
indebtedness of such Person whether incurred on or prior to the date of this
Indenture or thereafter incurred, for claims in respect of derivative products,
including interest rate, foreign exchange rate and commodity forward contracts,
options and swaps and similar arrangements; and (vii) every obligation of the
type referred to in clauses (i) through (vi) of another Person and all dividends
of another Person the payment of which, in either case, such Person has
guaranteed or is responsible or liable for, directly or indirectly, as obligor
or otherwise.

     "Defaulted Interest" has the meaning specified in Section 3.7.

                                      -4-
<PAGE>
 
     "Depositary" means, with respect to the Securities of any series issuable
or issued in whole or in part in the form of one or more Global Securities, the
Person designated as Depositary by the Company pursuant to Section 3.1 with
respect to such series (or any successor thereto).

     "Discount Security" means any security which provides for an amount less
than the principal amount thereof to be due and payable upon a declaration of
acceleration of the Maturity thereof pursuant to Section 5.2.

     "Distributions," with respect to the Trust Securities issued by an FBS
Trust, means amounts payable in respect of such Trust Securities as provided in
the related Trust Agreement and referred to therein as "Distributions."

     "Dollar" or "U.S. $" means the currency of the United States of America
that, as at the time of payment, is legal tender for the payment of public and
private debts.

     "Event of Default" has the meaning specified in Article V unless otherwise
specified in the supplemental indenture or the Officers' Certificate delivered
pursuant to Section 3.1 hereof creating a series of Securities.

     "Exchange Act" means the Securities Exchange Act of 1934 and any statute
successor thereto, in each case as amended from time to time.

     "Extension Period" has the meaning specified in Section 3.11.

     "FBS Guarantee" means the guarantee by the Company of distributions on the
Capital Securities of an FBS Trust to the extent provided in the related
Guarantee Agreement.

     "FBS Trust" has the meaning specified in the first recital of this
Indenture.

     "Global Security" means a Security in the form prescribed in Section 2.4
evidencing all or part of a series of Securities, issued to the Depositary or
its nominee for such series, and registered in the name of such Depositary or
its nominee.

     "Guarantee Agreement" means the Guarantee Agreement substantially in the
form attached hereto as Annex C, or substantially in such form as may be
specified as contemplated by Section 3.1 with respect to the Securities of any
series, in each case as amended from time to time.

     "Holder" means a Person in whose name a Security is registered in the
Securities Register.

                                      -5-
<PAGE>
 
     "Indenture" means this instrument as originally executed or as it may from
time to time be supplemented or amended by one or more indentures supplemental
hereto entered into pursuant to the applicable provisions hereof or one or more
Officers' Certificates delivered pursuant to Section 3.1 and shall include the
terms of each particular series of Securities established as contemplated by
Section 3.1.

     "Interest Payment Date" means as to each series of Securities the Stated
Maturity of an installment of interest on such Securities.

     "Junior Subordinated Payment" has the meaning specified in Section 13.2.

     "Maturity" when used with respect to any Security means the date on which
the principal of such Security becomes due and payable as therein or herein
provided, whether at the Stated Maturity or by declaration of acceleration, call
for redemption or otherwise.

     "Moody's" means Moody's Investors Service, Inc.

     "Notice of Default" means a written notice of the kind specified in Section
5.1(3).

     "Officers' Certificate" means a certificate signed by the Chairman of the
Board of Directors, a Vice Chairman of the Board of Directors, the President or
a Vice President, and by the Treasurer, an Assistant Treasurer, the Secretary or
an Assistant Secretary of the Company, and delivered to the Trustee.

     "Opinion of Counsel" means a written opinion of counsel, who may be counsel
for the Company, and who shall be acceptable to the Trustee.

     "Original Issue Date" means the date of issuance specified as such in each
Security.

     "Outstanding" means, when used in reference to any Securities, as of the
date of determination, all Securities theretofore authenticated and delivered
under this Indenture, except:

     (i) Securities theretofore canceled by the Trustee or delivered to the
Trustee for cancellation;

     (ii) Securities for whose payment money in the necessary amount has been
theretofore deposited with the Trustee or any Paying Agent in trust for the
Holders of such Securities; and

                                      -6-
<PAGE>
 
     (iii) Securities in substitution for or in lieu of which other Securities
have been authenticated and delivered or which have been paid pursuant to
Section 3.6, unless proof satisfactory to the Trustee is presented that any such
Securities are held by Holders in whose hands such Securities are valid, binding
and legal obligations of the Company;

provided, however, that in determining whether the Holders of the requisite
principal amount of Outstanding Securities have given any request, demand,
authorization, direction, notice, consent or waiver hereunder, Securities owned
by the Company or any other obligor upon the Securities or any Affiliate of the
Company or such other obligor shall be disregarded and deemed not to be
Outstanding, except that, in determining whether the Trustee shall be protected
in relying upon any such request, demand, authorization, direction, notice,
consent or waiver, only Securities which the Trustee knows to be so owned shall
be so disregarded.  Securities so owned which have been pledged in good faith
may be regarded as Outstanding if the pledgee establishes to the satisfaction of
the Trustee the pledgee's right so to act with respect to such Securities and
that the pledgee is not the Company or any other obligor upon the Securities or
any Affiliate of the Company or such other obligor.  Upon the written request of
the Trustee, the Company shall furnish to the Trustee promptly an Officers'
Certificate listing and identifying all Securities, if any, known by the Company
to be owned or held by or for the account of the Company, or any other obligor
on the Securities or any Affiliate of the Company or such obligor, and, subject
to the provisions of Section 6.1, the Trustee shall be entitled to accept such
Officers' Certificate as conclusive evidence of the facts therein set forth and
of the fact that all Securities not listed therein are Outstanding for the
purpose of any such determination.

     "Paying Agent" means the Trustee or any Person authorized by the Company to
pay) the principal of or interest on any Securities on behalf of the Company.

     "Person" means any individual, corporation, partnership, joint venture,
trust, unincorporated organization or government or any agency or political
subdivision thereof.

     "Place of Payment" means, with respect to the Securities of any series, the
place or places where the principal of (and premium, if any) and interest on the
Securities of such series are payable pursuant to Sections 3.1 and 3.11.

     "Predecessor Security" of any particular Security means every previous
Security evidencing all or a portion of the same debt as that evidenced by such
particular Security; and, for the purposes of this definition, any security
authenticated and delivered under Section 3.6 in lieu of a lost, destroyed or
stolen 

                                      -7-
<PAGE>
 
Security shall be deemed to evidence the same debt as the lost, destroyed or
stolen Security.

     "Proceeding" has the meaning specified in Section 13.2.

     "Property Trustee" means, in respect of any FBS Trust, the commercial bank
or trust company identified as the "Property Trustee" in the related Trust
Agreement, solely in its capacity as Property Trustee of such FBS Trust under
such Trust Agreement and not in its individual capacity, or its successor in
interest in such capacity, or any successor property trustee appointed as
therein provided.

     "Redemption Date," when used with respect to any Security to be redeemed,
means the date fixed for such redemption by or pursuant to this Indenture.

     "Redemption Price," when used with respect to any Security to be redeemed,
means the price at which it is to be redeemed pursuant to this Indenture.

     "Regular Record Date" for the interest payable on any Interest Payment Date
with respect to the Securities of a series means, unless otherwise provided
pursuant to Section 3.1 with respect to Securities of a series, (i) in the case
of Securities of a series represented by one or more Global Securities, the
Business Day next preceding such Interest Payment Date and (ii) in the case of
Securities of a series not represented by one or more Global Securities, the
date which is fifteen days next preceding such Interest Payment Date (whether or
not a Business Day).

     "Responsible Officer" when used with respect to the Trustee means any
officer of the Trustee assigned by the Trustee from time to time to administer
its corporate trust matters.

     "S&P" means Standard & Poor's Ratings Services.

     "Securities" or "Security" means any debt securities or debt security, as
the case may be, authenticated and delivered under this Indenture.

     "Securities Register" and "Securities Registrar" have the respective
meanings specified in Section 3.5.

     "Senior and Subordinated Debt" means the principal of (and premium, if any)
and interest, if any (including interest accruing on or after the filing of any
petition in bankruptcy or for reorganization relating to the Company whether or
not such claim for post-petition interest is allowed in such proceeding), on
Debt of the Company, whether incurred on or prior to the date of this Indenture
or thereafter incurred, unless, in the instrument creating or evidencing the
same or pursuant to which the same is outstanding, it is provided that such
obligations are not superior 

                                      -8-
<PAGE>
 
in right of payment to the Securities, provided, however, that Senior and
Subordinated Debt shall not be deemed to include (a) any Debt of the Company
which, when incurred and without respect to any election under Section 1111(b)
of the Bankruptcy Reform Act of 1978, as amended, was without recourse to the
Company, (b) any Debt of the Company to any of its Subsidiaries, (c) Debt to any
employee of the Company, and (d) any Securities.

     "Special Record Date" for the payment of any Defaulted Interest means a
date fixed by the Trustee pursuant to Section 3.7.

     "Stated Maturity" when used with respect to any Security or any installment
of principal thereof or interest thereon means the date specified pursuant to
the terms of such Security as the date on which the principal of such Security
or such installment of interest is due and payable, in the case of such
principal, as such date may be shortened or extended as provided pursuant to the
terms of such Security and this Indenture.

     "Subsidiary" means a corporation more than 50% of the outstanding voting
stock of which is owned, directly or indirectly, by the Company or by one or
more other Subsidiaries, or by the Company and one or more other Subsidiaries.
For purposes of this definition, "voting stock" means stock which ordinarily has
voting power for the election of directors, whether at all times or only so long
as no senior class of stock has such voting power by reason of any contingency.

     "Tax Event" means the receipt by the FBS Trust of an Opinion of Counsel (as
defined in the relevant FBS Trust Agreement) experienced in such matters to the
effect that, as a result of any amendment to, or change (including any announced
prospective change) in, the laws (or any regulations thereunder) of the United
States or any political subdivision or taxing authority thereof or therein, or
as a result of any official administrative pronouncement or judicial decision
interpreting or applying such laws or regulations, which amendment or change is
effective or which pronouncement or decision is announced on or after the date
of issuance of the Capital Securities of such FBS Trust, there is more than an
insubstantial risk that (i) such FBS Trust is, or will be within 90 days of the
date of such Opinion of Counsel, subject to United States Federal income tax
with respect to income received or accrued on the corresponding series of
Securities, (ii) interest payable by the Company on such corresponding series of
Securities is not, or within 90 days of the date of such Opinion of Counsel,
will not be, deductible by the Company, in whole or in part, for United States
Federal income tax purposes or (iii) such FBS Trust is, or will be within 90
days of the date of such Opinion of Counsel, subject to more than a de minimis
amount of other taxes, duties or other governmental charges.

     "Trust Agreement" means the Trust Agreement substantially in the form
attached hereto as Annex A, as amended by the form of Amended and Restated 

                                      -9-
<PAGE>
 
Trust Agreement substantially in the form attached hereto as Annex B, or
substantially in such form as may be specified as contemplated by Section 3.1
with respect to the Securities of any series, in each case as amended from time
to time.

     "Trustee" means the Person named as the "Trustee" in the first paragraph of
this instrument until a successor Trustee shall have become such pursuant to the
applicable provisions of this Indenture, and thereafter "Trustee" shall mean or
include each Person who is then a Trustee hereunder and, if at any time there is
more than one such Person, "Trustee" as used with respect to the Securities of
any series shall mean the Trustee with respect to Securities of that series.

     "Trust Indenture Act" means the Trust Indenture Act of 1939 (15 U.S.C.
(S)(S) 77aaa-77bbb), as amended and as in effect on the date as of this
Indenture, except as provided in Section 9.5.

     "Trust Securities" has the meaning specified in the first recital of this
Indenture.

     "Vice President" when used with respect to the Company, means any duly
appointed vice president, whether or not designated by a number or a word or
words added before or after the title "vice president."

Section 1.2.  Compliance Certificate and Opinions.

     Upon any application or request by the Company to the Trustee to take any
action under any provision of this Indenture, the Company shall furnish to the
Trustee an Officers' Certificate stating that all conditions precedent
(including covenants, compliance with which constitutes a condition precedent),
if any, provided for in this Indenture relating to the proposed action have been
complied with and an Opinion of Counsel stating that in the opinion of such
counsel all such conditions precedent (including covenants compliance with which
constitute a condition precedent), if any, have been complied with, except that
in the case of any such application or request as to which the furnishing of
such documents is specifically required by any provision of this Indenture
relating to such particular application or request, no additional certificate or
opinion need be furnished.

     Every certificate or opinion with respect to compliance with a condition or
covenant provided for in this Indenture (other than the certificates provided
pursuant to Section 10.5) shall include:

     (1) a statement that each individual signing such certificate or opinion
has read such covenant or condition and the definitions herein relating thereto;

                                      -10-
<PAGE>
 
     (2) a brief statement as to the nature and scope of the examination or
investigation upon which the statements or opinions contained in such
certificate or opinion are based;

     (3) a statement that, in the opinion of each such individual, he has made
such examination or investigation as is necessary to enable him to express an
informed opinion as to whether or not such covenant or condition has been
complied with; and

     (4) a statement as to whether, in the opinion of each such individual, such
condition or covenant has been complied with.

Section 1.3.  Forms of Documents Delivered to Trustee.

     In any case where several matters are required to be certified by, or
covered by an opinion of, any specified Person, it is not necessary that all
such matters be certified by, or covered by the opinion of, only one such
Person, or that they be so certified or covered by only one document, but one
such Person may certify or give an opinion with respect to some matters and one
or more other such Persons as to other matters, and any such Person may certify
or give an opinion as to such matters in one or several documents.

     Any certificate or opinion of an officer of the Company may be based,
insofar as it relates to legal matters, upon a certificate or opinion of, or
representations by, counsel, unless such officer knows, or in the exercise of
reasonable care should know, that the certificate or opinion or representations
with respect to matters upon which his certificate or opinion is based are
erroneous.  Any such certificate or Opinion of Counsel may be based, insofar as
it relates to factual matters, upon a certificate or opinion of, or
representations by, an officer or officers of the Company stating that the
information with respect to such factual matters is in the possession of the
Company, unless such counsel knows, or in the exercise of reasonable care should
know, that the certificate or opinion or representations with respect to such
matters are erroneous.

     Where any Person is required to make, give or execute two or more
applications, requests, consents, certificates, statements, opinions, or other
instruments under this Indenture, they may, but need not, be consolidated and
form one instrument.

Section 1.4.  Acts of Holders.

     (a) Any request, demand, authorization, direction, notice, consent, waiver
or other action provided by this Indenture to be given to or taken by Holders
may be embodied in and evidenced by one or more instruments of substantially

                                      -11-
<PAGE>
 
similar tenor signed by such Holders in person or by an agent or proxy duly
appointed in writing; and, except as herein otherwise expressly provided, such
action shall become effective when such instrument or instruments is or are
delivered to the Trustee, and, where it is hereby expressly required, to the
Company.  Such instrument or instruments (and the action embodied therein and
evidenced thereby) are herein sometimes referred to as the "Act" of the Holders
signing such instrument or instruments.  Proof of execution of any such
instrument or of a writing appointing any such agent shall be sufficient for any
purpose of this Indenture and (subject to Section 6.1) conclusive in favor of
the Trustee and the Company, if made in the manner provided in this Section.

     (b) The fact and date of the execution by any Person of any such instrument
or writing may be proved by the affidavit of a witness of such execution or by
the certificate of any notary public or other officer authorized by law to take
acknowledgments of deeds, certifying that the individual signing such instrument
or writing acknowledged to him the execution thereof.  Where such execution is
by a Person acting in other than his individual capacity, such certificate or
affidavit shall also constitute sufficient proof of his authority.

     (c) The fact and date of the execution by any Person of any such instrument
or writing, or the authority of the Person executing the same, may also be
proved in any other manner which the Trustee deems sufficient and in accordance
with such reasonable rules as the Trustee may determine.

     (d) The ownership of Securities shall be proved by the Securities Register.

     (e) Any request, demand, authorization, direction, notice, consent, waiver
or other action by the Holder of any Security shall bind every future Holder of
the same Security and the Holder of every Security issued upon the transfer
thereof or in exchange therefor or in lieu thereof in respect of anything done
or suffered to be done by the Trustee or the Company in reliance thereon,
whether or not notation of such action is made upon such Security.

     (f) The Company may set any day as a record date for the purpose of
determining the Holders of Outstanding Securities of any series entitled to
give, make or take any request, demand, authorization, direction, notice,
consent, waiver or other action provided or permitted by this Indenture to be
given, made or taken by Holders of Securities of such series, provided that the
Company may not set a record date for, and the provisions of this paragraph
shall not apply with respect to, the giving or making of any notice,
declaration, request or direction referred to in the next paragraph. If any
record date is set pursuant to this paragraph, the Holders of Outstanding
Securities of the relevant series on such record date, and no other Holders,
shall be entitled to take the relevant action, whether or not such Holders

                                      -12-
<PAGE>
 
remain Holders after such record date, provided that no such action shall be
effective hereunder unless taken on or prior to the applicable Expiration Date
by Holders of the requisite principal amount of Outstanding Securities of such
series on such record date. Nothing in this paragraph shall be construed to
prevent the Company from setting a new record date for any action for which a
record date has previously been set pursuant to this paragraph (whereupon the
record date previously set shall automatically and with no action by any Person
be canceled and of no effect), and nothing in this paragraph shall be construed
to render ineffective any action taken by Holders of the requisite principal
amount of Outstanding Securities of the relevant series on the date such action
is taken. Promptly after any record date is set pursuant to this paragraph, the
Company, at its own expense, shall cause notice of such record date, the
proposed action by Holders and the applicable Expiration Date to be given to the
Trustee in writing and to each Holder of Securities of the relevant series in
the manner set forth in Section 1.6.

     The Trustee may set any day as a record date for the purpose of determining
the Holders of Outstanding Securities of any series entitled to join in the
giving or making of (i) any Notice of Default, (ii) any declaration of
acceleration referred to in Section 5.2, (iii) any request to institute
proceedings referred to in Section 5.7(2) or (iv) any direction referred to in
Section 5.12, in each case with respect to Securities of such series. If any
record date is set pursuant to this paragraph, the Holders of Outstanding
Securities of such series on such record date, and no other Holders, shall be
entitled to join in such notice, declaration, request or direction, whether or
not such Holders remain Holders after such record date, provided that no such
action shall be effective hereunder unless taken on or prior to the applicable
Expiration Date by Holders of the requisite principal amount of Outstanding
Securities of such series on such record date. Nothing in this paragraph shall
be construed to prevent the Trustee from setting a new record date for any
action for which a record date has previously been set pursuant to this
paragraph (whereupon the record date previously set shall automatically and with
no action by any Person be canceled and of no effect), and nothing in this
paragraph shall be construed to render ineffective any action taken by Holders
of the requisite principal amount of Outstanding Securities of the relevant
series on the date such action is taken. Promptly after any record date is set
pursuant to this paragraph, the Trustee, at the Company's expense, shall cause
notice of such record date, the proposed action by Holders and the applicable
Expiration Date to be given to the Company in writing and to each Holder of
Securities of the relevant series in the manner set forth in Section 1.6.

     With respect to any record date set pursuant to this Section, the party
hereto which sets such record dates may designate any day as the "Expiration
Date" and from time to time may change the Expiration Date to any earlier or
later day, provided that no such change shall be effective unless notice of the
proposed new Expiration Date is given to the other party hereto in writing, and
to each Holder of 

                                      -13-
<PAGE>
 
Securities of the relevant series in the manner set forth in Section 10.6, on or
prior to the existing Expiration Date. If an Expiration Date is not designated
with respect to any record date set pursuant to this Section, the party hereto
which set such record date shall be deemed to have initially designated the
180th day after such record date as the Expiration Date with respect thereto,
subject to its right to change the Expiration Date as provided in this
paragraph. Notwithstanding the foregoing, no Expiration Date shall be later than
the 180th day after the applicable record date.

     (g) Without limiting the foregoing, a Holder entitled hereunder to take any
action hereunder with regard to any particular Security may do so with regard to
all or any part of the principal amount of such Security or by one or more duly
appointed agents each of which may do so pursuant to such appointment with
regard to all or any part of such principal amount.

Section 1.5.  Notices, Etc. to Trustee and Company.

     Any request, demand, authorization, direction, notice, consent, waiver or
Act of Holders or other document provided or permitted by this Indenture to be
made upon, given or furnished to, or filed with,

     (1) the Trustee by any Holder, any holder of Capital Securities or the
Company shall be sufficient for every purpose hereunder if made, given,
furnished or filed in writing to or with the Trustee at its Corporate Trust
office, or

     (2) the Company by the Trustee, any Holder or any holder of Capital
Securities shall be sufficient for every purpose (except as otherwise provided
in Section 5.1) hereunder if in writing and mailed, first class, postage
prepaid, to the Company, addressed to it at the address of its principal office
specified in the first paragraph of this instrument or at any other address
previously furnished in writing to the Trustee by the Company.

Section 1.6.  Notice to Holders; Waiver.

     Where this Indenture provides for notice to Holders of any event, such
notice shall be sufficiently given (unless otherwise herein expressly provided)
if in writing and mailed, first class postage prepaid, to each Holder affected
by such event, at the address of such Holder as it appears in the Securities
Register, not later than the latest date, and not earlier than the earliest
date, prescribed for the giving of such notice.  In any case where notice to
Holders is given by mail, neither the failure to mail such notice, nor any
defect in any notice so mailed, to any particular Holder shall affect the
sufficiency of such notice with respect to other Holders.  Where this Indenture
provides for notice in any manner, such notice may be waived in writing by the
Person entitled to receive such notice, either before or after the event, and
such waiver shall be the equivalent of such notice.  Waivers of notice by
Holders 

                                      -14-
<PAGE>
 
shall be filed with the Trustee, but such filing shall not be a condition
precedent to the validity of any action taken in reliance upon such waiver.

Section 1.7.  Conflict with Trust Indenture Act.

     If any provision of this Indenture limits, qualifies or conflicts with the
duties imposed by any of Sections 310 to 317, inclusive, of the Trust Indenture
Act through operation of Section 318(c) thereof, such imposed duties shall
control.

Section 1.8.  Effect of Headings and Table of Contents.

     The Article and Section headings herein and the Table of Contents are for
convenience only and shall not affect the construction hereof.

Section 1.9.  Successors and Assigns.

     All covenants and agreements in this Indenture by the Company shall bind
its successors and assigns, whether so expressed or not.

Section 1.10.  Separability Clause.

     In case any provision in this Indenture or in the Securities shall be
invalid, illegal or unenforceable, the validity, legality and enforceability of
the remaining provisions shall not in any way be affected or impaired thereby.

Section 1.11.  Benefits of Indenture.

     Nothing in this Indenture or in the Securities, express or implied, shall
give to any Person, other than the parties hereto and their successors and
assigns, the Holders of Senior and Subordinated Debt, the Holders of the
Securities and, to the extent expressly provided in Sections 5.2, 5.8, 5.9,
5.11, 5.13, 9.1 and 9.2, the holders of Capital Securities, any benefit or any
legal or equitable right, remedy or claim under this Indenture.

Section 1.12.  Governing Law.

     This Indenture and the Securities shall be governed by and construed in
accordance with the laws of the State of New York.

Section 1.13.  Non-Business Days.

     In any case where any Interest Payment Date, Redemption Date or Stated
Maturity of any Security shall not be a Business Day, then (notwithstanding any

                                      -15-
<PAGE>
 
other provision of this Indenture or the Securities) payment of interest or
principal (and premium, if any) need not be made on such date, but may be made
on the next succeeding Business Day (and no interest shall accrue for the period
from and after such Interest Payment Date, Redemption Date or Stated Maturity,
as the case may be, until such next succeeding Business Day except that, if such
Business Day is in the next succeeding calendar year, such payment shall be made
on the immediately preceding Business Day (in each case with the same force and
effect as if made on the Interest Payment Date or Redemption Date or at the
Stated Maturity)).

                                  ARTICLE II

                                SECURITY FORMS

Section 2.1.  Forms Generally.

     The Securities of each series shall be in substantially the forms set forth
in this Article, or in such other form or forms as shall be established by or
pursuant to a Board Resolution or in one or more indentures supplemental hereto,
in each case with such appropriate insertions, omissions, substitutions and
other variations as are required or permitted by this Indenture and may have
such letters, numbers or other marks of identification and such legends or
endorsements placed thereon as may be required to comply with applicable tax
laws or the rules of any securities exchange or as may, consistently herewith,
be determined by the officers executing such securities, as evidenced by their
execution of the Securities.  If the form of Securities of any series is
established by action taken pursuant to a Board Resolution, a copy of an
appropriate record of such action shall be certified by the Secretary or an
Assistant Secretary of the Company and delivered to the Trustee at or prior to
the delivery of the Company Order contemplated by Section 3.3 with respect to
the authentication and delivery of such Securities.

     The Trustee's certificates of authentication shall be substantially in the
form set forth in this Article.

     The definitive Securities shall be printed, lithographed or engraved or
produced by any combination of these methods, if required by any securities
exchange on which the Securities may be listed, on a steel engraved border or
steel engraved borders or may be produced in any other manner permitted by the
rules of any securities exchange on which the Securities may be listed, all as
determined by the officers executing such Securities, as evidenced by their
execution of such securities.

                                      -16-
<PAGE>
 
Section 2.2.  Form of Face of Security.


                            FIRST BANK SYSTEM, INC.

                     __% JUNIOR SUBORDINATED DEBENTURE DUE


Registered                                                  Principal Amount:
No.                                                         CUSIP No.:

     First Bank System, Inc., a corporation organized and existing under the
laws of Delaware (hereinafter called the "Company", which term includes any
successor corporation under the Indenture hereinafter referred to), for value
received, hereby promises to pay to __________, or registered assigns, the
principal sum of $_______ Dollars on _____________; provided that the Company
may (i) shorten the Stated Maturity of the principal of this Security to a date
not earlier than _____________, and (ii) extend the Stated Maturity of the
principal of this Security at any time on one or more occasions, subject to
certain conditions specified in Section 3.14 of the Indenture, but in no event
to a date later than _______________.  The Company further promises to pay
interest on said principal sum from  _______________ or from the most recent
interest payment date (each such date, an "Interest Payment Date") on which
interest has been paid or duly provided for, semi-annually (subject to deferral
as set forth herein) in arrears on the last day of_____ and_____ of each year
commencing  __________________ at the rate of ____% per annum, until the
principal hereof shall have become due and payable, plus Additional Interest, if
any, until the principal hereof is paid or duly provided for or made available
for payment and on any overdue principal and (without duplication and to the
extent that payment of such interest is enforceable under applicable law) on any
overdue installment of interest at the rate of ____% per annum, compounded semi-
annually.  The amount of interest payable for any period shall be computed on
the basis of twelve 30-day months and a 360-day year.  The amount of interest
payable for any partial period shall be computed on the basis of the number of
days elapsed in a 360-day year of twelve 30-day months.  In the event that any
date on which interest is payable on this Security is not a Business Day, then a
payment of the interest payable on such date will be made on the next succeeding
day which is a Business Day (and without any interest or other payment in
respect of any such delay), except that, if such Business Day is in the next
succeeding calendar year, such payment shall be made on the immediately
preceding Business Day, in each case with the same force and effect as if made
on the date the payment was originally payable.  A "Business Day" shall mean any
day other than (i) a Saturday or Sunday, (ii) a day on which banking
institutions in The City of New York are authorized or required by law or
executive order to remain closed or (iii) a day on which the Corporate Trust
Office of 

                                      -17-
<PAGE>
 
the Trustee, or the principal office of the Property Trustee under the Trust
Agreement (hereinafter referred to) for [name of trust] is closed for business.
The interest installment so payable, and punctually paid or duly provided for,
on any Interest Payment Date will, as provided in the Indenture, be paid to the
Person in whose name this Security (or one or more Predecessor Securities) is
registered at the close of business on the Regular Record Date for such interest
installment, which shall be[insert Record Date] next preceding such Interest
Payment Date. Any such interest installment not so punctually paid or duly
provided for shall forthwith cease to be payable to the Holder on such Regular
Record Date and may either be paid to the Person in whose name this Security (or
one or more Predecessor Securities) is registered at the close of business on a
Special Record Date for the payment of such Defaulted Interest to be fixed by
the Trustee, notice whereof shall be given to Holders of Securities of this
series not less than _____ days prior to such Special Record Date, or be paid at
any time in any other lawful manner not inconsistent with the requirements of
any securities exchange on which the Securities of this series may be listed,
and upon such notice as may be required by such exchange, all as more fully
provided in said Indenture.

     So long as no Event of Default has occurred and is continuing, the Company
shall have the right at any time during the term of this Security to defer
payment of interest on this Security, at any time or from time to time, for up
to ____ consecutive __________ interest payment periods with respect to each
deferral period (each an "Extension Period"), (during which Extension Periods
the Company shall have the right to make partial payments of interest on any
Interest Payment Date, and at the end of which the Company shall pay all
interest then accrued and unpaid (together with Additional Interest thereon to
the extent permitted by applicable law)); provided, however, that no Extension
Period shall extend beyond the Stated Maturity of the principal of this
Security; provided, further, that during any such Extension Period, the Company
shall not, and shall not permit any Subsidiary of the Company to, (i) declare or
pay any dividends or distributions or redeem, purchase, acquire or make a
liquidation payment with respect to, any of the Company's capital stock (which
includes common and preferred stock), or (ii) make any payment of principal of
or interest or premium, if any, on or repay, repurchase or redeem any debt
security of the Company (including Securities issued by the Company pursuant to
the Indenture other than the Securities represented by this certificate) that
ranks pari passu with or junior in interest to this Security or make any
guarantee payments with respect to any guarantee by the Company of the debt
securities of any Subsidiaries of the Company (including FBS Guarantees other
than the FBS Guarantee related to the Capital Securities issued by [NAME OF
TRUST]) if such guarantee ranks pari passu with or junior in interest to this
Security (other than (a) dividends or distributions in Common Stock of the
Company, (b) any declaration of a dividend in connection with the implementation
of a stockholders' rights plan, or the issuance of stock under any such plan in
the future or the redemption or repurchase of any such rights pursuant thereto,
(c) payments under the FBS 

                                      -18-
<PAGE>
 
Guarantee related to the Capital Securities issued by [NAME OF TRUST], and (d)
purchases of Common Stock related to the issuance of Common Stock or rights
under any of the Company's benefit plans for its directors, officers or
employees). Prior to the termination of any such Extension Period, the Company
may further extend such Extension Period, provided that such extension does not
cause such Extension Period to exceed __________ consecutive interest payment
periods or to extend beyond the Stated Maturity. Upon the termination of any
such Extension Period and upon the payment of all amounts then due, and subject
to the foregoing limitation, the Company may elect to begin a new Extension
Period. No interest shall be due and payable during an Extension Period except
at the end thereof. The Company shall give the Trustee, the Property Trustee and
the Administrative Trustees of [NAME OF TRUST] notice of its election to begin
any Extension Period at least ___ Business Days prior to the earlier of (i) the
date on which Distributions on the Capital Securities would be payable except
for the election to begin such Extension Period, or (ii) the date the
Administrative Trustees are required to give notice to any automated quotation
system or to holders of such Capital Securities of the record date or the date
such Distributions are payable, but in any event not less than _____ Business
Days prior to such record date.

     Payment of the principal of (and premium, if any) and interest on this
Security will be made at the office or agency of the Company maintained for that
purpose in the United States, in such coin or currency of the United States of
America as at the time of payment is legal tender for payment of public and
private debts; provided, however, that at the option of the Company payment of
interest may be made (i) by check mailed to the address of the Person entitled
thereto as such address shall appear in the Securities Register or (ii) by wire
transfer in immediately available funds at such place and to such account as may
be designated by the Person entitled thereto as specified in the Securities
Register.

     The indebtedness evidenced by this Security is, to the extent provided in
the Indenture, unsecured and will rank junior and subordinate and subject in
right of payments to the prior payment in full of all Senior and Subordinated
Debt, and this Security is issued subject to the provisions of the Indenture
with respect thereto.  Each Holder of this Security, by accepting the same, (a)
agrees to and shall be bound by such provisions, (b) authorizes and directs the
Trustee on his behalf to take such actions as may be necessary or appropriate to
effectuate the subordination so provided and (c) appoints the Trustee his
attorney-in-fact for any and all such purposes.  Each Holder hereof, by his
acceptance hereof, waives all notice of the acceptance of the subordination
provisions contained herein and in the Indenture by each holder of Senior and
Subordinated Debt, whether now outstanding or hereafter incurred, and waives
reliance by each such holder upon said provisions.

                                      -19-
<PAGE>
 
     Reference is hereby made to the further provisions of this Security set
forth on the reverse hereof, which further provisions shall for all purposes
have the same effect as if set forth at this place.

     Unless the certificate of authentication hereon has been executed by the
Trustee referred to on the reverse hereof by manual signature, this Security
shall not be entitled to any benefit under the Indenture or be valid or
obligatory for any purpose.

     IN WITNESS WHEREOF, the Company has caused this instrument to be duly
executed under its corporate seal.

                                    FIRST BANK SYSTEM, INC.

                                    By:______________________________________
                                    [President or Vice President]

Attest:

____________________________________ 
[Secretary or Assistant Secretary]

Section 2.3.  Form of Reverse of Security.

     This Security is one of a duly authorized issue of securities of the
Company (herein called the "Securities"), issued and to be issued in one or more
series under a Junior Subordinated Indenture, dated as of November 15, 1996
(herein called the "Indenture"), between the Company and Wilmington Trust
Company, as Trustee (herein called the "Trustee", which term includes any
successor trustee under the Indenture), to which Indenture and all indentures
supplemental thereto reference is hereby made for a statement of the respective
rights, limitations of rights, duties and immunities thereunder of the Trustee,
the Company and the Holders of the Securities, and of the terms upon which the
Securities are, and are to be, authenticated and delivered.  This Security is
one of the series designated on the face hereof, limited in aggregate principal
amount to $_________.

     All terms used in this Security that are defined in the Indenture and in
the Trust Agreement, dated as of __________ ___, ____, as amended (the "Trust
Agreement"), for [insert name of trust] among First Bank System, Inc., as
Depositor, and the Trustees named therein, shall have the meanings assigned to
them in the Indenture or the Trust Agreement, as the case may be.

     [If applicable, insert--The Company may at any time, at its option, on or
after ________, and subject to the terms and conditions of Article XI of the
Indenture], 

                                      -20-
<PAGE>
 
[if applicable insert--and subject to FBS having received prior approval of the
Board of Governors of the Federal Reserve System (the "Federal Reserve") if then
required under applicable capital guidelines or policies of the Federal Reserve]
redeem this Security [in whole at any time] [or in part from time to time],
without premium or penalty, at a redemption price equal to [insert redemption
price] to the Redemption Date.]

     [If applicable, insert--Upon the occurrence and during the continuation of
a Tax Event in respect of an FBS Trust, the Company may, at its option, at any
time within 90 days of the occurrence of such Tax Event redeem this Security,
[if applicable, insert--in whole but not in part], subject to the provisions of
Section 11.7 and the other provisions of Article XI of the Indenture, at a
redemption price equal to [insert redemption price] to the Redemption Date.

     [If applicable, insert--In the event of redemption of this Security in part
only, a new Security or Securities of this series for the portion hereof not
redeemed will be issued in the name of the Holder hereof upon the cancellation
hereof.

     The Indenture contains provisions for satisfaction and discharge of the
entire indebtedness of this Security upon compliance by the Company with certain
conditions set forth in the Indenture.

     The Indenture permits, with certain exceptions as therein provided, the
Company and the Trustee at any time to enter into a supplemental indenture or
indentures for the purpose of modifying in any manner the rights and obligations
of the Company and of the Holders of the Securities, with the consent of the
Holders of not less than a majority in principal amount of the Outstanding
Securities of each series to be affected by such supplemental indenture.  The
Indenture also contains provisions permitting Holders of specified percentages
in principal amount of the Securities of each series at the time Outstanding, on
behalf of the Holders of all Securities of such series, to waive compliance by
the Company with certain provisions of the Indenture and certain past defaults
under the Indenture and their consequences.  Any such consent or waiver by the
Holder of this Security shall be conclusive and binding upon such Holder and
upon all future Holders of this Security and of any Security issued upon the
registration of transfer hereof or in exchange herefor or in lieu hereof,
whether or not notation of such consent or waiver is made upon this Security.

     [If the Security is not a Discount Security,--As provided in and subject to
the provisions of the Indenture, if an Event of Default with respect to the
Securities of this series at the time Outstanding occurs and is continuing, then
and in every such case the Trustee or the Holders of not less than 25% in
principal amount of the Outstanding Securities of this series may declare the
principal amount of all the Securities of this series to be due and payable
immediately, by a notice in writing to 

                                      -21-
<PAGE>
 
the Company (and to the Trustee if given by Holders), provided that, in the case
of the Securities of this series issued to an FBS Trust, if upon an Event of
Default, the Trustee or the Holders of not less than 25% in principal amount of
the Outstanding Securities of this series fails to declare the principal of all
the Securities of this series to be immediately due and payable, the holders of
at least 25% in aggregate Liquidation Amount of the Capital Securities then
outstanding shall have such right by a notice in writing to the Company and the
Trustee; and upon any such declaration the principal amount of and the accrued
interest (including any Additional Interest) on all the Securities of this
series shall become immediately due and payable, provided that the payment of
principal and interest (including any Additional Interest) on such Securities
shall remain subordinated to the extent provided in Article XIII of the
Indenture.]

     [If the Security is a Discount Security,--As provided in and subject to the
provisions of the Indenture, if an Event of Default with respect to the
Securities of this series at the time Outstanding occurs and is continuing, then
and in every such case the Trustee or the Holders of not less than such portion
of the principal amount as may be specified in the terms of this series may
declare an amount of principal of the Securities of this series to be due and
payable immediately, by a notice in writing to the Company (and to the Trustee
if given by Holders), provided that, in the case of the Securities of this
series issued to an FBS Trust, if upon an Event of Default, the Trustee or the
Holders of not less than 25% in principal amount of the Outstanding Securities
of this series fails to declare the principal of all the Securities of this
series to be immediately due and payable, the holders of at least 25% in
aggregate Liquidation Amount of the Capital Securities then outstanding shall
have such right by a notice in writing to the Company and the Trustee.  Such
amount shall be equal to [insert formula for determining the amount].  Upon any
such declaration, such amount of the principal of and the accrued interest
(including any Additional Interest) on all the Securities of this series shall
become immediately due and payable, provided that the payment of principal and
interest (including any Additional Interest) on such Securities shall remain
subordinated to the extent provided in Article XIII of the Indenture.  Upon
payment (i) of the amount of principal so declared due and payable and (ii) of
interest on any overdue principal and overdue interest (in each case to the
extent that the payment of such interest shall be legally enforceable), all of
the Company's obligations in respect of the payment of the principal of and
interest, if any, on this Security shall terminate.]

     No reference herein to the Indenture and no provision of this Security or
of the Indenture shall alter or impair the obligation of the Company, which is
absolute and unconditional, to pay the principal of (and premium, if any) and
interest on this Security at the times, place and rate, and in the coin or
currency, herein prescribed.

     As provided in the Indenture and subject to certain limitations therein set
forth, the transfer of this Security is registrable in the Securities Register,
upon 

                                      -22-
<PAGE>
 
surrender of this Security for registration of transfer at the office or agency
of the Company maintained under Section 10.2 of the Indenture duly endorsed by,
or accompanied by a written instrument of transfer in form satisfactory to the
Company and the Securities Registrar duly executed by, the Holder hereof or his
attorney duly authorized in writing, and thereupon one or more new Securities of
this series, of authorized denominations and for the same aggregate principal
amount, will be issued to the designated transferee or transferees. No service
charge shall be made for any such registration of transfer or exchange, but the
Company may require payment of a sum sufficient to cover any tax or other
governmental charge payable in connection therewith.

     Prior to due presentment of this Security for registration of transfer, the
Company, the Trustee and any agent of the Company or the Trustee may treat the
Person in whose name this Security is registered as the owner hereof for all
purposes, whether or not this Security be overdue, and neither the Company, the
Trustee nor any such agent shall be affected by notice to the contrary.

     The Securities of this series are issuable only in registered form without
coupons in denominations of minimum denominations of $[100,000] and any integral
multiples of $[1,000] in excess thereof.  As provided in the Indenture and
subject to certain limitations therein set forth, Securities of this series are
exchangeable for a like aggregate principal amount of Securities of such series
of a different authorized denomination, as requested by the Holder surrendering
the same.

     The Company and, by its acceptance of this Security or a beneficial
interest therein, the Holder of, and any Person that acquires a beneficial
interest in, this Security agree that for United States Federal, state and local
tax purposes it is intended that this Security constitute indebtedness.

     THE INDENTURE AND THIS SECURITY SHALL BE GOVERNED BY AND CONSTRUED IN
ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK WITHOUT REGARD TO CONFLICTS OF
LAWS PRINCIPLES THEREOF.

Section 2.4.  Additional Provisions Required in Global Security.

     Any Global Security issued hereunder shall, in addition to the provisions
contained in Sections 2.2 and 2.3, bear a legend in substantially the following
form:

     "THIS SECURITY IS A GLOBAL SECURITY WITHIN THE MEANING OF THE INDENTURE
HEREINAFTER REFERRED TO AND IS REGISTERED IN THE NAME OF A DEPOSITARY OR A
NOMINEE OF A DEPOSITARY.  THIS SECURITY IS EXCHANGEABLE FOR SECURITIES
REGISTERED IN THE NAME OF A PERSON OTHER THAN THE DEPOSITARY OR ITS NOMINEE ONLY
IN THE 

                                      -23-
<PAGE>
 
LIMITED CIRCUMSTANCES DESCRIBED IN THE INDENTURE AND MAY NOT BE TRANSFERRED
EXCEPT AS A WHOLE BY THE DEPOSITARY TO A NOMINEE OF THE DEPOSITARY OR BY A
NOMINEE OF THE DEPOSITARY TO THE DEPOSITARY OR ANOTHER NOMINEE OF THE
DEPOSITARY."

Section 2.5.  Form of Trustee's Certificate of Authentication.

     This is one of the Securities referred to in the within mentioned
Indenture.

Dated:

                                    WILMINGTON TRUST COMPANY,
                                    as Trustee

                                    By:_________________________
                                        Authorized Officer


                                  ARTICLE III

                                THE SECURITIES

Section 3.1.  Title and Terms.

     The aggregate principal amount of Securities which may be authenticated and
delivered under this Indenture is unlimited.

     The Securities may be issued in one or more series.  There shall be
established in or pursuant to a Board Resolution, and set forth in an Officers'
Certificate (such Officers' Certificate shall have the effect of a supplemental
indenture for all purposes hereunder), or established in one or more indentures
supplemental hereto, prior to the issuance of Securities of a series:

     (a) the title of the securities of such series, which shall distinguish the
Securities of the series from all other Securities;

     (b) the limit, if any, upon the aggregate principal amount of the
Securities of such series which may be authenticated and delivered under this
Indenture (except for Securities authenticated and delivered upon registration
of transfer of, or in exchange for, or in lieu of, other Securities of the
series pursuant to Section 3.4, 3.5, 3.6, 9.6 or 11.6 and except for any
Securities which, pursuant to Section 3.3, are deemed never to have been
authenticated and delivered hereunder); provided, however, that the authorized
aggregate principal amount of such series may be increased above such amount by
a Board Resolution to such effect;

                                      -24-
<PAGE>
 
     (c) the Stated Maturity or Maturities on which the principal of the
Securities of such series is payable or the method of determination thereof;

     (d) the rate or rates, if any, at which the Securities of such series shall
bear interest, if any, the rate or rates and extent to which Additional
Interest, if any, shall be payable in respect of any Securities of such series,
the Interest Payment Dates on which such interest shall be payable, the right,
pursuant to Section 3.11 or as otherwise set forth therein, of the Company to
defer or extend an Interest Payment Date, and the Regular Record Date for the
interest payable on any Interest Payment Date or the method by which any of the
foregoing shall be determined;

     (e) the place or places where the principal of (and premium, if any) and
interest on the Securities of such series shall be payable, the place or places
where the Securities of such series may be presented for registration of
transfer or exchange, and the place or places where notices and demands to or
upon the Company in respect of the Securities of such series may be made;

     (f) the period or periods within or the date or dates on which, if any, the
price or prices at which and the terms and conditions upon which the Securities
of such series may be redeemed, in whole or in part, at the option of the
Company;

     (g) the obligation or the right, if any, of the Company to prepay, repay or
purchase the Securities of such series pursuant to any sinking fund,
amortization or analogous provisions, or at the option of a Holder thereof, and
the period or periods within which, the price or prices at which, the currency
or currencies (including currency unit or units) in which and the other terms
and conditions upon which Securities of the series shall be redeemed, repaid or
purchased, in whole or in part, pursuant to such obligation;

     (h) the denominations in which any Securities of such series shall be
issuable, if other than denominations of $100,000 and any integral multiples of
$1,000 in excess thereof;

     (i) if other than Dollars, the currency or currencies (including currency
unit or units) in which the principal of (and premium, if any) and interest, if
any, on the Securities of the series shall be payable, or in which the
Securities of the series shall be denominated;

     (j) the additions, modifications or deletions, if any, in the Events of
Default or covenants of the Company set forth herein with respect to the
Securities of such series;

                                      -25-
<PAGE>
 
     (k) if other than the principal amount thereof, the portion of the
principal amount of Securities of such series that shall be payable upon
declaration of acceleration of the Maturity thereof;

     (l) the additions or changes, if any, to this Indenture with respect to the
Securities of such series as shall be necessary to permit or facilitate the
issuance of the Securities of such series in bearer form, registrable or not
registrable as to principal, and with or without interest coupons;

     (m) any index or indices used to determine the amount of payments of
principal of and premium, if any, on the Securities of such series or the manner
in which such amounts will be determined;

     (n) whether the Securities of the series, or any portion thereof, shall
initially be issuable in the form of a temporary Global Security representing
all or such portion of the Securities of such series and provisions for the
exchange of such temporary Global Security for definitive Securities of such
series;

     (o) if applicable, that any Securities of the series shall be issuable in
whole or in part in the form of one or more Global Securities and, in such case,
the respective Depositaries for such Global Securities, the form of any legend
or legends which shall be borne by any such Global Security in addition to or in
lieu of that set forth in Section 2.4 and any circumstances in addition to or in
lieu of those set forth in Section 3.5 in which any such Global Security may be
exchanged in whole or in part for Securities registered, and any transfer of
such Global Security in whole or in part may be registered, in the name or names
of Persons other than the Depositary for such Global Security or a nominee
thereof;

     (p) the appointment of any Paying Agent or Agents for the Securities of
such series;

     (q) the terms of any right to convert or exchange Securities of such series
into any other securities or property of the Company, and the additions or
changes, if any, to this Indenture with respect to the Securities of such series
to permit or facilitate such conversion or exchange;

     (r) the form or forms of the Trust Agreement, Amended and Restated Trust
Agreement and Guarantee Agreement, if different from the forms attached hereto
as Annexes A, B and C, respectively;

     (s) the relative degree, if any, to which the Securities of the series
shall be senior to or be subordinated to other series of Securities in right of
payment, whether such other series of Securities are Outstanding or not; and

                                      -26-
<PAGE>
 
     (t) any other terms of the Securities of such series (which terms shall not
be inconsistent with the provisions of this Indenture).

     All Securities of any one series shall be substantially identical except as
to denomination and except as may otherwise be provided herein or in or pursuant
to such Board Resolution and set forth in such Officers' Certificate or in any
such indenture supplemental hereto.

     If any of the terms of the series are established by action taken pursuant
to a Board Resolution, a copy of an appropriate record of such action shall be
certified by the Secretary or an Assistant Secretary of the Company and
delivered to the Trustee at or prior to the delivery of the Officers'
Certificate setting forth the terms of the series.

     The Securities shall be subordinated in right of payment to Senior and
Subordinated Debt as provided in Article XIII.

Section 3.2.  Denominations.

     The Securities of each series shall be in registered form without coupons
and shall be issuable in minimum denominations of $100,000 and integral
multiples of $1,000 in excess thereof, unless otherwise specified as
contemplated by Section 3.1.

Section 3.3.  Execution, Authentication, Delivery and Dating.

     The Securities shall be executed on behalf of the Company by its President
or one of its Vice Presidents under its corporate seal reproduced or impressed
thereon and attested by its Secretary or one of its Assistant Secretaries. The
signature of any of these officers on the Securities may be manual or facsimile.

     Securities bearing the manual or facsimile signatures of individuals who
were at any time the proper officers of the Company shall bind the Company,
notwithstanding that such individuals or any of them have ceased to hold such
offices prior to the authentication and delivery of such Securities or did not
hold such offices at the date of such Securities. At any time and from time to
time after the execution and delivery of this Indenture, the Company may deliver
Securities of any series executed by the Company to the Trustee for
authentication, together with a Company Order for the authentication and
delivery of such Securities, and the Trustee in accordance with the Company
Order shall authenticate and deliver such Securities. If the form or terms of
the Securities of the series have been established by or pursuant to one or more
Board Resolutions as permitted by Sections 2.1 and 3.1, in authenticating such
Securities, and accepting the additional responsibilities under this Indenture
in relation to such Securities, the Trustee shall be entitled to 

                                      -27-
<PAGE>
 
receive, and (subject to Section 6.1) shall be fully protected in relying upon,
an Opinion of Counsel stating,

     (1) if the form of such Securities has been established by or pursuant to
Board Resolution as permitted by Section 2.1, that such form has been
established in conformity with the provisions of this Indenture;

     (2) if the terms of such Securities have been established by or pursuant to
Board Resolution as permitted by Section 3.1, that such terms have been
established in conformity with the provisions of this Indenture; and

     (3) that such Securities, when authenticated and delivered by the Trustee
and issued by the Company in the manner and subject to any conditions specified
in such Opinion of Counsel, will constitute valid and legally binding
obligations of the Company enforceable in accordance with their terms, subject
to bankruptcy, insolvency, fraudulent transfer, reorganization, moratorium and
similar laws of general applicability relating to or affecting creditors'
rights and to general equity principles.

     If such form or terms have been so established, the Trustee shall not be
required to authenticate such Securities if the issue of such Securities
pursuant to this Indenture will affect the Trustee's own rights, duties or
immunities under the Securities and this Indenture or otherwise in a manner
which is not reasonably acceptable to the Trustee.

          Notwithstanding the provisions of Section 3.1 and of the preceding
paragraph, if all Securities of a series are not to be originally issued at one
time, it shall not be necessary to deliver the Officers' Certificate otherwise
required pursuant to Section 3.1 or the Company Order and Opinion of Counsel
otherwise required pursuant to such preceding paragraph at or prior to the
authentication of each Security of such series if such documents are delivered
at or prior to the authentication upon original issuance of the first Security
of such series to be issued.

     Each Security shall be dated the date of its authentication.

     No Security shall be entitled to any benefit under this Indenture or be
valid or obligatory for any purpose, unless there appears on such Security a
certificate of authentication substantially in the form provided for herein
executed by the Trustee by the manual signature of one of its authorized
officers, and such certificate upon any Security shall be conclusive evidence,
and the only evidence, that such Security has been duly authenticated and
delivered hereunder. Notwithstanding the foregoing, if any Security shall have
been authenticated and delivered hereunder but never issued and sold by the
Company, and the Company shall deliver such Security to the Trustee for
cancellation as provided in Section 3.9, for all purposes of 

                                      -28-
<PAGE>
 
this Indenture such Security shall be deemed never to have been authenticated
and delivered hereunder and shall never be entitled to the benefits of this
Indenture.

Section 3.4.  Temporary Securities.

     Pending the preparation of definitive Securities of any series, the Company
may execute, and upon Company Order the Trustee shall authenticate and deliver,
temporary Securities which are printed, lithographed, typewritten, mimeographed
or otherwise produced, in any denomination, substantially of the tenor of the
definitive Securities of such series in lieu of which they are issued and with
such appropriate insertions, omissions, substitutions and other variations as
the officers executing such Securities may determine, as evidenced by their
execution of such Securities.

     If temporary Securities of any series are issued, the Company will cause
definitive Securities of such series to be prepared without unreasonable delay.
After the preparation of definitive Securities, the temporary Securities shall
be exchangeable for definitive Securities upon surrender of the temporary
Securities at the office or agency of the Company designated for that purpose
without charge to the Holder.  Upon surrender for cancellation of any one or
more temporary Securities, the Company shall execute and the Trustee shall
authenticate and deliver in exchange therefor one or more definitive Securities
of the same series of authorized denominations having the same Original Issue
Date and Stated Maturity and having the same terms as such temporary Securities.
Until so exchanged, the temporary Securities of any series shall in all respects
be entitled to the same benefits under this Indenture as definitive Securities
of such series.

Section 3.5.  Registration, Transfer and Exchange.

     The Company shall cause to be kept at the Corporate Trust Office of the
Trustee a register in which, subject to such reasonable regulations as it may
prescribe, the Company shall provide for the registration of Securities and of
transfers of Securities.  Such register is herein sometimes referred to as the
"Securities Register." The Trustee is hereby appointed "Securities Registrar"
for the purpose of registering Securities and transfers of Securities as herein
provided.

     Upon surrender for registration of transfer of any Security at the office
or agency of the Company designated for that purpose the Company shall execute,
and the Trustee shall authenticate and deliver, in the name of the designated
transferee or transferees, one or more new Securities of the same series of any
authorized denominations, of a like aggregate principal amount, of the same
Original Issue Date and Stated Maturity and having the same terms.

                                      -29-
<PAGE>
 
     At the option of the Holder, Securities may be exchanged for other
Securities of the same series of any authorized denominations, of a like
aggregate principal amount, of the same Original Issue Date and Stated Maturity
and having the same terms, upon surrender of the Securities to be exchanged at
such office or agency.  Whenever any securities are so surrendered for exchange,
the Company shall execute, and the Trustee shall authenticate and deliver, the
Securities which the Holder making the exchange is entitled to receive.

     All Securities issued upon any transfer or exchange of Securities shall be
the valid obligations of the Company, evidencing the same debt, and entitled to
the same benefits under this Indenture, as the Securities surrendered upon such
transfer or exchange.

     Every Security presented or surrendered for transfer or exchange shall (if
so required by the Company or the Securities Registrar) be duly endorsed, or be
accompanied by a written instrument of transfer in form satisfactory to the
Company and the Securities Registrar, duly executed by the Holder thereof or his
attorney duly authorized in writing.

     No service charge shall be made to a Holder for any transfer or exchange of
Securities, but the Company may require payment of a sum sufficient to cover any
tax or other governmental charge that may be imposed in connection with any
transfer or exchange of Securities.

     No service charge shall be made to a Holder for any transfer or exchange of
Securities, but the Company may require payment of a sum sufficient to cover any
tax or other governmental charge that may be imposed in connection with any
transfer or exchange of Securities.

     The provisions of Clauses (1), (2), (3) and (4) below shall apply only to
Global Securities:

     (1) Each Global Security authenticated under this Indenture shall be
 registered in the name of the Depositary designated for such Global Security or
 a nominee thereof and delivered to such Depositary or a nominee thereof or
 custodian therefor, and each such Global Security shall constitute a single
 Security for all purposes of this Indenture.

     (2) Notwithstanding any other provision in this Indenture, no Global
 Security may be exchanged in whole or in part for Securities registered, and no
 transfer of a Global Security in whole or in part may be registered, in the
 name of any Person other than the Depositary for such Global Security or a
 nominee thereof unless (A) such Depositary (i) has notified the Company that it
 is unwilling or unable to continue as Depositary for such Global Security or
 (ii) has 

                                      -30-
<PAGE>
 
 ceased to be a clearing agency registered under the Exchange Act at a time when
 the Depositary is required to be so registered to act as depositary, in each
 case unless the Company has approved a successor Depositary within 90 days, (B)
 there shall have occurred and be continuing an Event of Default with respect to
 such Global Security, (C) the Company in its sole discretion determines that
 such Global Security will be so exchangeable or transferable or (D) there shall
 exist such circumstances, if any, in addition to or in lieu of the foregoing as
 have been specified for this purpose as contemplated by Section 3.1.

     (3) Subject to Clause (2) above, any exchange of a Global Security for
 other Securities may be made in whole or in part, and all Securities issued in
 exchange for a Global Security or any portion thereof shall be registered in
 such names as the Depositary for such Global Security shall direct.

     (4) Every Security authenticated and delivered upon registration of
 transfer of, or in exchange for or in lieu of, a Global Security or any portion
 thereof, whether pursuant to this Section, Section 3.4, 3.6, 9.6 or 11.6 or
 otherwise, shall be authenticated and delivered in the form of, and shall be, a
 Global Security, unless such Security is registered in the name of a Person
 other than the Depositary for such Global Security or a nominee thereof.

     Neither the Company nor the Trustee shall be required, pursuant to the
provisions of this Section, (a) to issue, transfer or exchange any Security of
any series during a period beginning at the opening of business 15 days before
the day of selection for redemption of Securities pursuant to Article XI and
ending at the close of business on the day of mailing of notice of redemption or
(b) to transfer or exchange any Security so selected for redemption in whole or
in part, except, in the case of any Security to be redeemed in part, any portion
thereof not to be redeemed.

Section 3.6.  Mutilated, Destroyed, Lost and Stolen Securities.

     If any mutilated Security is surrendered to the Trustee together with such
security or indemnity as may be required by the Company or the Trustee to save
each of them harmless, the Company shall execute and the Trustee shall
authenticate and deliver in exchange therefor a new Security of the same issue
and series of like tenor and principal amount, having the same Original Issue
Date and Stated Maturity, and bearing a number not contemporaneously
outstanding.

     If there shall be delivered to the Company and to the Trustee (i) evidence
to their satisfaction of the destruction, loss or theft of any Security, and
(ii) such security or indemnity as may be required by them to save each of them
harmless, then, in the absence of notice to the Company or the Trustee that such
Security has been acquired by a bona fide purchaser, the Company shall execute
and upon its request the Trustee shall authenticate and deliver, in lieu of any
such destroyed, lost 

                                      -31-
<PAGE>
 
or stolen Security, a new Security of the same issue and series of like tenor
and principal amount, having the same Original Issue Date and Stated Maturity as
such destroyed, lost or stolen Security, and bearing a number not
contemporaneously outstanding.

     In case any such mutilated, destroyed, lost or stolen Security has become
or is about to become due and payable, the Company in its discretion may,
instead of issuing a new Security, pay such Security.

     Upon the issuance of any new Security under this Section, the Company may
require the payment of a sum sufficient to cover any tax or other governmental
charge that may be imposed in relation thereto and any other expenses (including
the fees and expenses of the Trustee) connected therewith.

     Every new Security issued pursuant to this Section in lieu of any
destroyed, lost or stolen Security shall constitute an original additional
contractual obligation of the Company, whether or not the destroyed, lost or
stolen Security shall be at any time enforceable by anyone, and shall be
entitled to all the benefits of this Indenture equally and proportionately with
any and all other Securities duly issued hereunder.

     The provisions of this Section 3.6 are exclusive and shall preclude (to the
extent lawful) all other rights and remedies with respect to the replacement or
payment of mutilated, destroyed, lost or stolen Securities.

Section 3.7.  Payment of Interest; Interest Rights Preserved.

     Interest on any Security of any series which is payable, and is punctually
paid or duly provided for, on any Interest Payment Date, shall be paid to the
Person in whose name that Security (or one or more Predecessor Securities) is
registered at the close of business on the Regular Record Date for such interest
in respect of Securities of such series, except that, unless otherwise provided
in the Securities of such series, interest payable on the Stated Maturity of the
principal of a Security shall be paid to the Person to whom principal is paid.
The initial payment of interest on any Security of any series which is issued
between a Regular Record Date and the related Interest Payment Date shall be
payable as provided in such Security or in the Board Resolution pursuant to
Section 3.1 with respect to the related series of Securities.

     Any interest on any Security which is payable, but is not timely paid or
duly provided for, on any Interest Payment Date for Securities of such series
(herein called "Defaulted Interest"), shall forthwith cease to be payable to the
registered Holder on the relevant Regular Record Date by virtue of having been
such Holder, and such Defaulted Interest may be paid by the Company, at its
election in each case, as provided in Clause (1) or (2) below:

                                      -32-
<PAGE>
 
     (1) The Company may elect to make payment of any Defaulted Interest to the
Persons in whose names the Securities of such series in respect of which
interest is in default (or their respective Predecessor Securities) are
registered at the close of business on a Special Record Date for the payment of
such Defaulted Interest, which shall be fixed in the following manner.  The
Company shall notify the Trustee in writing of the amount of Defaulted Interest
proposed to be paid on each Security and the date of the proposed payment, and
at the same time the Company shall deposit with the Trustee an amount of money
equal to the aggregate amount proposed to be paid in respect of such Defaulted
Interest or shall make arrangements satisfactory to the Trustee for such deposit
prior to the date of the proposed payment, such money when deposited to be held
in trust for the benefit of the Persons entitled to such Defaulted Interest as
in this Clause provided.  Thereupon, the Trustee shall fix a Special Record Date
for the payment of such Defaulted Interest which shall be not more than 15 days
and not less than 10 days prior to the date of the proposed payment and not less
than 10 days after the receipt by the Trustee of the notice of the proposed
payment.  The Trustee shall promptly notify the Company of such Special Record
Date and, in the name and at the expense of the Company, shall cause notice of
the proposed payment of such Defaulted Interest and the Special Record Date
therefor to be mailed, first class, postage prepaid, to each Holder of a
Security of such series at the address of such Holder as it appears in the
Securities Register not less than 10 days prior to such Special Record Date.
The Trustee may, in its discretion, in the name and at the expense of the
Company, cause a similar notice to be published at least once in a newspaper,
customarily published in the English language on each Business Day and of
general circulation in the Borough of Manhattan, The City of New York, but such
publication shall not be a condition precedent to the establishment of such
Special Record Date.  Notice of the proposed payment of such Defaulted Interest
and the Special Record Date therefor having been mailed as aforesaid, such
Defaulted Interest shall be paid to the Persons in whose names the Securities of
such series (or their respective Predecessor Securities) are registered on such
Special Record Date and shall no longer be payable pursuant to the following
Clause (2).

     (2) The Company may make payment of any Defaulted Interest in any other
lawful manner not inconsistent with the requirements of any securities exchange
on which the Securities of the series in respect of which interest is in default
may be listed and, upon such notice as may be required by such exchange (or by
the Trustee if the Securities are not listed), if, after notice given by the
Company to the Trustee of the proposed payment pursuant to this Clause, such
payment shall be deemed practicable by the Trustee.

     Subject to the foregoing provisions of this Section 3.7, each Security
delivered under this Indenture upon transfer of or in exchange for or in lieu of
any other Security shall carry the rights to interest accrued and unpaid, and to
accrue, which were carried by such other Security.

                                      -33-
<PAGE>
 
Section 3.8.  Persons Deemed Owners.

     The Company, the Trustee and any agent of the Company or the Trustee may
treat the Person in whose name any Security is registered as the owner of such
Security for the purpose of receiving payment of principal of and (subject to
Section 3.7) any interest on such Security and for all other purposes
whatsoever, whether or not such Security be overdue, and neither the Company,
the Trustee nor any agent of the Company or the Trustee shall be affected by
notice to the contrary.

Section 3.9.  Cancellation.

     All Securities surrendered for payment, redemption, transfer or exchange
shall, if surrendered to any Person other than the Trustee, be delivered to the
Trustee, and any such Securities and Securities surrendered directly to the
Trustee for any such purpose shall be promptly canceled by it.  The Company may
at any time deliver to the Trustee for cancellation any Securities previously
authenticated and delivered hereunder which the Company may have acquired in any
manner whatsoever, and all Securities so delivered shall be promptly canceled by
the Trustee.  No Securities shall be authenticated in lieu of or in exchange for
any Securities canceled as provided in this Section, except as expressly
permitted by this Indenture.  All canceled Securities shall be destroyed by the
Trustee and the Trustee shall deliver to the Company a certificate of such
destruction.

Section 3.10.  Computation of Interest.

     Except as otherwise specified as contemplated by Section 3.1 for Securities
of any series, interest on the Securities of each series for any period shall be
computed on the basis of a 360-day year of twelve 30-day months and interest on
the Securities of each series for any partial period shall be computed on the
basis of the number of days elapsed in a 360-day year of twelve 30-day months.

Section 3.11.  Deferrals of Interest Payment Dates.

     If specified as contemplated by Section 2.1 or Section 3.1 with respect to
the Securities of a particular series, so long as no Event of Default has
occurred and is continuing, the Company shall have the right, at any time during
the term of such series, from time to time to defer the payment of interest on
such Securities for such period or periods as may be specified as contemplated
by Section 3.1 (each, an "Extension Period") during which Extension Periods the
Company shall have the right to make partial payments of interest on any
Interest Payment Date. No Extension Period shall end on a date other than an
Interest Payment Date. At the end of any such Extension Period the Company shall
pay all interest then accrued and unpaid on the Securities (together with
Additional Interest thereon, if any, at 

                                      -34-
<PAGE>
 
the rate specified for the Securities of such series to the extent permitted by
applicable law); provided, however, that no Extension Period shall extend beyond
the Stated Maturity of the principal of the Securities of such series; provided,
further, that during any such Extension Period, the Company shall not, and shall
not permit any Subsidiary to, (i) declare or pay any dividends or distributions
on, or redeem, purchase, acquire or make a liquidation payment with respect to,
any of the Company's capital stock (which includes common and preferred stock),
or (ii) make any payment of principal of or interest or premium, if any, on or
repay, repurchase or redeem any debt securities of the Company (including
Securities other than the Securities of such series) that ranks pari passu with
or junior in interest to the Securities of such series or make any guarantee
payments with respect to any guarantee by the Company of the debt securities of
any Subsidiary of the Company (including FBS Guarantees other than the FBS
Guarantee related to the Capital Securities issued by the FBS Trust holding
Securities of such series) if such guarantee rank pari passu with or junior in
interest to the securities of such series (other than (a) dividends or
distributions in Common Stock of the Company, (b) any declaration of a dividend
in connection with the implementation of a stockholders' rights plan, or the
issuance of stock under any such plan in the future or the redemption or
repurchase of any such rights pursuant thereto, (c) payments under the FBS
Guarantee related to the Capital Securities issued by the FBS Trust holding
Securities of such series, and (d) purchases of Common Stock related to the
issuance of Common Stock or rights under any of the Company's benefit plans for
its directors, officers or employees). Prior to the termination of any such
Extension Period, the Company may further extend such Extension Period, provided
that such extension does not cause such Extension Period to extend beyond the
Stated Maturity of the principal of such Securities. Upon termination of any
Extension Period and upon the payment of all accrued and unpaid interest and any
Additional Interest then due on any Interest Payment Date, the Company may elect
to begin a new Extension Period, subject to the above requirements. No interest
shall be due and payable during an Extension Period, except at the end thereof.
The Company shall give the Trustee, the Property Trustee and the Administrative
Trustees of the FBS Trust holding Securities of such series notice of its
election of any Extension Period (or an extension thereof) at least five
Business Days prior to the earlier of (i) the next succeeding date on which
Distributions on the Capital Securities of such FBS Trust would be payable
except for the election to begin or extend such Extension Period or (ii) the
date the Administrative Trustees of such FBS Trust are required to give notice
to any automated quotation system or to holders of such Capital Securities of
the record date or the date such Distributions are payable, but in any event not
less than five Business Days prior to such record date.

     The Trustee shall promptly give notice of the Company's election to begin
any such Extension Period to the Holders of the Outstanding Securities of such
series.

                                      -35-
<PAGE>
 
Section 3.12.  Right of Set-Off.

     [RESERVED]

Section 3.13.  Agreed Tax Treatment.

     Each Security issued hereunder shall provide that the Company and, by its
acceptance of a Security or a beneficial interest therein, the Holder of, and
any Person that acquires a beneficial interest in, such Security agree that for
United States Federal, state and local tax purposes it is intended that such
Security constitute indebtedness.

Section 3.14.  Shortening or Extension of Stated Maturity.

     If specified as contemplated by Section 2.1 or Section 3.1 with respect to
the Securities of a particular series, the Company shall have the right to
(i) shorten the Stated Maturity of the principal of the Securities of such
series at any time to any date not earlier than the first date on which the
Company has the right to redeem the Securities of such series, and (ii) extend
the Stated Maturity of the principal of the Securities of such series at any
time at its election for one or more periods, but in no event to a date later
than the 49th anniversary of the first Interest Payment Date following the
Original Issue Date of the Securities of such series; provided that, if the
Company elects to exercise its right to extend the Stated Maturity of the
principal of the Securities of such series pursuant to clause (ii) above, at the
time such election is made and at the time of extension (A) the Company is not
in bankruptcy, otherwise insolvent or in liquidation, (B) the Company is not in
default in the payment of any interest or principal on such Securities, (C) in
the case of any series of Securities issued to an FBS Trust, such FBS Trust is
not in arrears on payments of Distributions on the Capital Securities issued by
such FBS Trust and no deferred Distributions are accumulated and (D) such
Securities are rated not less than BBB- by S&P or Baa3 by Moody's or the
equivalent by any other nationally recognized statistical rating organization.
In the event the Company elects to shorten or extend the Stated Maturity of the
Securities of any series, it shall give notice to the Trustee, and the Trustee
shall give notice of such shortening or extension to the Holders thereof no less
than 30 and no more than 60 days prior to the effectiveness thereof.

Section 3.15.  CUSIP Numbers.

     The Company in issuing the Securities may use "CUSIP" numbers (if then
generally in use), and, if so, the Trustee shall use "CUSIP" numbers in notices
of redemption as a convenience to Holders; provided that any such notice may
state that no representation is made as to the correctness of such numbers
either as printed on the Securities or as contained in any notice of a
redemption and that reliance may be placed only on the other identification
numbers printed on the 

                                      -36-
<PAGE>
 
Securities, and any such redemption shall not be affected by any defect in or
omission of such numbers.

                                  ARTICLE IV

                          SATISFACTION AND DISCHARGE

Section 4.1.  Satisfaction and Discharge of Indenture.

     This Indenture shall, upon Company Request, cease to be of further effect
(except as to any surviving rights of registration of transfer or exchange of
Securities herein expressly provided for and as otherwise provided in this
Section 4.1) and the Trustee, on demand of and at the expense of the Company,
shall execute proper instruments acknowledging satisfaction and discharge of
this Indenture, when

     (1) either

     (A) all Securities theretofore authenticated and delivered (other than (i)
Securities which have been destroyed, lost or stolen and which have been
replaced or paid as provided in Section 3.6 and (ii) Securities for whose
payment money has theretofore been deposited in trust or segregated and held in
trust by the Company and thereafter repaid to the Company or discharged from
such trust, as provided in Section 10.3) have been delivered to the Trustee for
cancellation; or

     (B) all such Securities not theretofore delivered to the Trustee for
cancellation

           (i) have become due and payable, or

           (ii) will become due and payable at their Stated Maturity within one
      year of the date of deposit, or

           (iii) are to be called for redemption within one year under
      arrangements satisfactory to the Trustee for the giving of notice of
      redemption by the Trustee in the name, and at the expense, of the Company,

and the Company, in the case of Clause (B) (i), (ii) or (iii) above, has
deposited or caused to be deposited with the Trustee as trust funds in trust for
such purpose an amount in the currency or currencies in which the Securities of
such series are payable sufficient to pay and discharge the entire indebtedness
on such Securities not theretofore delivered to the Trustee for cancellation,
for principal (and premium, if any) and interest (including any Additional
Interest) to the date of such deposit (in the case of Securities which have
become due and payable) or to the Stated Maturity or Redemption Date, as the
case may be;

                                      -37-
<PAGE>
 
     (2) the Company has paid or caused to be paid all other sums payable
hereunder by the Company; and

     (3) the Company has delivered to the Trustee an Officers' Certificate and
an Opinion of Counsel each stating that all conditions precedent herein provided
for relating to the satisfaction and discharge of this Indenture have been
complied with.

Notwithstanding the satisfaction and discharge of this Indenture, the
obligations of the Company to the Trustee under Section 6.7, the obligations of
the Trustee to any Authenticating Agent under Section 6.14 and, if money shall
have been deposited with the Trustee pursuant to subclause (B) of clause (1) of
this Section, the obligations of the Trustee under Section 4.2 and the last
paragraph of Section 10.3 shall survive.

Section 4.2.  Application of Trust Money.

     Subject to the provisions of the last paragraph of Section 10.3, all money
deposited with the Trustee pursuant to Section 4.1 shall be held in trust and
applied by the Trustee, in accordance with the provisions of the Securities and
this Indenture, to the payment, either directly or through any Paying Agent
(including the Company acting as its own Paying Agent) as the Trustee may
determine, to the Persons entitled thereto, of the principal (and premium, if
any) and interest for the payment of which such money or obligations have been
deposited with or received by the Trustee.

                                   ARTICLE V

                                   REMEDIES

Section 5.1.  Events of Default.

     "Event of Default", wherever used herein with respect to the Securities of
any series, means any one of the following events (whatever the reason for such
Event of Default and whether it shall be voluntary or involuntary or be effected
by operation of law or pursuant to any judgment, decree or order of any court or
any order, rule or regulation of any administrative or governmental body):

     (1) default in the payment of any interest upon any Security of that
series, including any Additional Interest in respect thereof, when it becomes
due and payable, and continuance of such default for a period of 30 days
(subject to the deferral of any due date in the case of an Extension Period); or

                                      -38-
<PAGE>
 
     (2) default in the payment of the principal of (or premium, if any, on) any
Security of that series at its Maturity; or

     (3) default in the performance, or breach, in any material respect, of any
covenant or warranty of the Company in this Indenture (other than a covenant or
warranty a default in the performance of which or the breach of which is
elsewhere in this Section 5.1 specifically dealt with), and continuance of such
default or breach for a period of 60 days after there has been given, by
registered or certified mail, to the Company by the Trustee or to the Company
and the Trustee by the Holders of at least 25% in principal amount of the
Outstanding Securities of that series a written notice specifying such default
or breach and requiring it to be remedied; or

     (4) the entry of a decree or order by a court having jurisdiction in the
premises adjudging the Company a bankrupt or insolvent, or approving as properly
filed a petition seeking reorganization, arrangement, adjustment or composition
of or in respect of the Company under any applicable Federal or State
bankruptcy, insolvency, reorganization or other similar law, or appointing a
receiver, liquidator, assignee, trustee, sequestrator (or other similar
official) of the Company or of any substantial part of its property or ordering
the winding up or liquidation of its affairs, and the continuance of any such
decree or order unstayed and in effect for a period of 60 consecutive days; or

     (5) the institution by the Company of proceedings to be adjudicated a
bankrupt or insolvent, or the consent by it to the institution of bankruptcy or
insolvency proceedings against it, or the filing by it of a petition or answer
or consent seeking reorganization or relief under any applicable Federal or
State bankruptcy, insolvency, reorganization or other similar law, or the
consent by it to the filing of any such petition or to the appointment of a
receiver, liquidator, assignee, trustee, sequestrator (or other similar
official) of the Company or of any substantial part of its property, or the
making by it of an assignment for the benefit for creditors, or the admission by
it in writing of its inability to pay its debts generally as they become due and
its willingness to be adjudicated a bankrupt, or the taking of corporate action
by the Company in furtherance of any such action; or

     (6) any other Event of Default provided with respect to Securities of that
series.

Section 5.2.  Acceleration of Maturity; Rescission and Annulment.

     If an Event of Default (other than an Event of Default specified in
Section 5.1(4) or 5.1(5)) with respect to Securities of any series at the time
Outstanding occurs and is continuing, then and in every such case the Trustee or
the Holders of not less than 25% in principal amount of the Outstanding
Securities of that series may declare the principal amount (or, if the
Securities of that series are 

                                      -39-
<PAGE>
 
Discount Securities, such portion of the principal amount as may be specified in
the terms of that series) of all the Securities of that series to be due and
payable immediately, by a notice in writing to the Company (and to the Trustee
if given by Holders), provided that, in the case of the Securities of a series
issued to an FBS Trust, if, upon an Event of Default, the Trustee or the Holders
of not less than 25% in principal amount of the Outstanding Securities of that
series fail to declare the principal of all the Securities of that series to be
immediately due and payable, the holders of at least 25% in aggregate
liquidation amount of the corresponding series of Capital Securities then
outstanding shall have such right by a notice in writing to the Company and the
Trustee; and upon any such declaration such principal amount (or specified
portion thereof) of and the accrued interest (including any Additional Interest)
on all the Securities of such series shall become immediately due and payable.
Payment of principal and interest (including any Additional Interest) on such
Securities shall remain subordinated to the extent provided in Article XIII
notwithstanding that such amount shall become immediately due and payable as
herein provided. If an Event of Default specified in Section 5.1(4) or 5.1(5)
with respect to Securities of any series at the time Outstanding occurs, the
principal amount of all the Securities of that series (or, if the Securities of
that series are Discount Securities, such portion of the principal amount of
such Securities as may be specified by the terms of that series) shall
automatically, and without any declaration or other action on the part of the
Trustee or any Holder, become immediately due and payable.

     At any time after such a declaration of acceleration with respect to
Securities of any series has been made and before a judgment or decree for
payment of the money due has been obtained by the Trustee as hereinafter in this
Article provided, the Holders of a majority in principal amount of the
Outstanding Securities of that series, by written notice to the Company and the
Trustee, may rescind and annul such declaration and its consequences if:

     (1) the Company has paid or deposited with the Trustee a sum sufficient to
pay:

     (A) all overdue installments of interest (including any Additional
Interest) on all Securities of that series,

     (B) the principal of (and premium, if any, on) any Securities of that
series which have become due otherwise than by such declaration of acceleration
and interest thereon at the rate borne by the Securities, and

     (C) all sums paid or advanced by the Trustee hereunder and the reasonable
compensation, expenses, disbursements and advances of the Trustee, its agents
and counsel; and

                                      -40-
<PAGE>
 
     (2) all Events of Default with respect to Securities of that series, other
than the non-payment of the principal of Securities of that series which has
become due solely by such acceleration, have been cured or waived as provided in
Section 5.13.

     In the case of Securities of a series issued to an FBS Trust, the holders
of a majority in aggregate Liquidation Amount (as defined in the Trust Agreement
under which such FBS Trust is formed) of the related series of Capital
Securities issued by such FBS Trust shall also have the right to rescind and
annul such declaration and its consequences by written notice to the Company and
the Trustee subject to the satisfaction of the conditions set forth in
Clauses (1) and (2) above of this Section 5.2.

     No such rescission shall affect any subsequent default or impair any right
consequent thereon.

Section 5.3.  Collection of Indebtedness and Suits for Enforcement by Trustee.

     The Company covenants that if:

     (1) default is made in the payment of any installment of interest
(including any Additional Interest) on any Security when such interest becomes
due and payable and such default continues for a period of 30 days, or

     (2) default is made in the payment of the principal of (and premium, if
any, on) any Security at the Maturity thereof,

the Company will, upon demand of the Trustee, pay to the Trustee, for the
benefit of the Holders of such Securities, the whole amount then due and payable
on such Securities for principal, including any sinking fund payment or
analogous obligations (and premium, if any) and interest (including any
Additional Interest); and, in addition thereto, all amounts owing the Trustee
under Section 6.7.

     If the Company fails to pay such amounts forthwith upon such demand, the
Trustee, in its own name and as trustee of an express trust, may institute a
judicial proceeding for the collection of the sums so due and unpaid, and may
prosecute such proceeding to judgment or final decree, and may enforce the same
against the Company or any other obligor upon the Securities and collect the
moneys adjudged or decreed to be payable in the manner provided by law out of
the property of the Company or any other obligor upon the Securities, wherever
situated.

     If an Event of Default with respect to Securities of any series occurs and
is continuing, the Trustee may in its discretion proceed to protect and enforce
its rights and the rights of the Holders of Securities of such series by such
appropriate judicial 

                                      -41-
<PAGE>
 
proceedings as the Trustee shall deem most effectual to protect and enforce any
such rights, whether for the specific enforcement of any covenant or agreement
in this Indenture or in aid of the exercise of any power granted herein, or to
enforce any other proper remedy.

Section 5.4.  Trustee May File Proofs of Claim.

     In case of the pendency of any receivership, insolvency, liquidation,
bankruptcy, reorganization, arrangement, adjustment, composition or other
judicial proceeding relative to the Company or any other obligor upon the
Securities or the property of the Company or of such other obligor or their
creditors,

     (a) the Trustee (irrespective of whether the principal of the Securities of
any series shall then be due and payable as therein expressed or by declaration
or otherwise and irrespective of whether the Trustee shall have made any demand
on the Company for the payment of overdue principal (and premium, if any) or
interest (including any Additional Interest)) shall be entitled and empowered,
by intervention in such proceeding or otherwise,

          (i) to file and prove a claim for the whole amount of principal (and
premium, if any) and interest (including any Additional Interest) owing and
unpaid in respect to the Securities and to file such other papers or documents
as may be necessary or advisable and to take any and all actions as are
authorized under the Trust Indenture Act in order to have the claims of the
Holders and any predecessor to the Trustee under Section 6.7 allowed in any such
judicial proceedings; and

          (ii) in particular, the Trustee shall be authorized to collect and
receive any moneys or other property payable or deliverable on any such claims
and to distribute the same in accordance with Section 5.6; and

     (b) any custodian, receiver, assignee, trustee, liquidator, sequestrator
(or other similar official) in any such judicial proceeding is hereby authorized
by each Holder to make such payments to the Trustee for distribution in
accordance with Section 5.6, and in the event that the Trustee shall consent to
the making of such payments directly to the Holders, to pay to the Trustee any
amount due to it and any predecessor Trustee under Section 6.7.

     Nothing herein contained shall be deemed to authorize the Trustee to
authorize or consent to or accept or adopt on behalf of any Holder any plan of
reorganization, arrangement, adjustment or composition affecting the Securities
or the rights of any Holder thereof, or to authorize the Trustee to vote in
respect of the claim of any Holder in any such proceeding; provided, however,
that the Trustee may, on behalf of the Holders, vote for the election of a
trustee in bankruptcy or similar official and be a member of a creditors' or
other similar committee.

                                      -42-
<PAGE>
 
Section 5.5.  Trustee May Enforce Claim Without Possession of Securities.

     All rights of action and claims under this Indenture or the Securities may
be prosecuted and enforced by the Trustee without the possession of any of the
Securities or the production thereof in any proceeding relating thereto, and any
such proceeding instituted by the Trustee shall be brought in its own name as
trustee of an express trust, and any recovery of judgment shall, after provision
for the payment of all the amounts owing the Trustee and any predecessor Trustee
under Section 6.7, its agents and counsel, be for the ratable benefit of the
Holders of the Securities in respect of which such judgment has been recovered.

Section 5.6.  Application of Money Collected.

     Any money or property collected or to be applied by the Trustee with
respect to a series of Securities pursuant to this Article shall be applied in
the following order, at the date or dates fixed by the Trustee and, in case of
the distribution of such money or property on account of principal (or premium,
if any) or interest (including any Additional Interest), upon presentation of
the Securities and the notation thereon of the payment if only partially paid
and upon surrender thereof if fully paid:

     FIRST: To the payment of all amounts due the Trustee and any predecessor
Trustee under Section 6.7;

     SECOND: Subject to Article XIII, to the payment of the amounts then due
and unpaid upon such series of Securities for principal (and premium, if any)
and interest (including any Additional Interest), in respect of which or for the
benefit of which such money has been collected, ratably, without preference or
priority of any kind, according to the amounts due and payable on such series of
Securities for principal (and premium, if any) and interest (including any
Additional Interest), respectively; and

     THIRD: The balance, if any, to the Person or Persons entitled thereto.

Section 5.7.  Limitation on Suits.

     No Holder of any Securities of any series shall have any right to institute
any proceeding, judicial or otherwise, with respect to this Indenture or for the
appointment of a receiver, assignee, trustee, liquidator, sequestrator (or other
similar official) or for any other remedy hereunder, unless:

     (1) such Holder has previously given written notice to the Trustee of a
continuing Event of Default with respect to the Securities of that series;

                                      -43-
<PAGE>
 
     (2) the Holders of not less than 25% in principal amount of the Outstanding
Securities of that series shall have made written request to the Trustee to
institute proceedings in respect of such Event of Default in its own name as
Trustee hereunder;

     (3) such Holder or Holders have offered to the Trustee reasonable indemnity
against the costs, expenses and liabilities to be incurred in compliance with
such request:

     (4) the Trustee for 60 days after its receipt of such notice, request and
offer of indemnity has failed to institute any such proceeding; and

     (5) no direction inconsistent with such written request has been given to
the Trustee during such 60-day period by the Holders of a majority in principal
amount of the Outstanding Securities of that series;

it being understood and intended that no one or more of such Holders shall have
any right in any manner whatever by virtue of, or by availing itself of, any
provision of this Indenture to affect, disturb or prejudice the rights of any
other Holders of Securities, or to obtain or to seek to obtain priority or
preference over any other of such Holders or to enforce any right under this
Indenture, except in the manner herein provided and for the equal and ratable
benefit of all such Holders.

Section 5.8.  Unconditional Right of Holders to Receive Principal, Premium and
Interest; Direct Action by Holders of Capital Securities.

     Notwithstanding any other provision in this Indenture, the Holder of any
Security shall have the right which is absolute and unconditional to receive
payment of the principal of (and premium, if any) and (subject to Section 3.7)
interest (including any Additional Interest) on such Security on the respective
Stated Maturities expressed in such Security (or, in the case of redemption, on
the Redemption Date) and to institute suit for the enforcement of any such
payment, and such right shall not be impaired without the consent of such
Holder. In the case of Securities of a series issued to an FBS Trust, any holder
of the corresponding series of Capital Securities issued by such FBS Trust shall
have the right, upon the occurrence of an Event of Default described in Section
5.1(1) or 5.1(2), to institute a suit directly against the Company for
enforcement of payment to such holder of principal of (premium, if any) and
(subject to Section 3.7) interest (including any Additional Interest) on the
Securities having a principal amount equal to the aggregate Liquidation Amount
(as defined in the Trust Agreement under which such FBS Trust is formed) of such
Capital Securities of the corresponding series held by such holder.

                                      -44-
<PAGE>
 
Section 5.9.  Restoration of Rights and Remedies.

     If the Trustee, any Holder or any holder of Capital Securities has
instituted any proceeding to enforce any right or remedy under this Indenture
and such proceeding has been discontinued or abandoned for any reason, or has
been determined adversely to the Trustee, such Holder or such holder of Capital
Securities, then and in every such case the Company, the Trustee, the Holders
and such holder of Capital Securities shall, subject to any determination in
such proceeding, be restored severally and respectively to their former
positions hereunder, and thereafter all rights and remedies of the Trustee, the
Holders and the holders of Capital Securities shall continue as though no such
proceeding had been instituted.

Section 5.10.  Rights and Remedies Cumulative.

     Except as otherwise provided in the last paragraph of Section 3.6, no right
or remedy herein conferred upon or reserved to the Trustee or to the Holders is
intended to be exclusive of any other right or remedy, and every right and
remedy shall, to the extent permitted by law, be cumulative and in addition to
every other right and remedy given hereunder or now or hereafter existing at law
or in equity or otherwise.  The assertion or employment of any right or remedy
hereunder, or otherwise, shall not prevent the concurrent assertion or
employment of any other appropriate right or remedy.

Section 5.11.  Delay or Omission Not Waiver.

     No delay or omission of the Trustee, any Holder of any Security or any
holder of any Capital Security to exercise any right or remedy accruing upon any
Event of Default shall impair any such right or remedy or constitute a waiver of
any such Event of Default or an acquiescence therein.

     Every right and remedy given by this Article or by law to the Trustee or to
the Holders and the right and remedy given to the holders of Capital Securities
by Section 5.8 may be exercised from time to time, and as often as may be deemed
expedient, by the Trustee, the Holders or the holders of Capital Securities, as
the case may be.

Section 5.12.  Control by Holders.

     The Holders of a majority in principal amount of the Outstanding Securities
of any series shall have the right to direct the time, method and place of
conducting any proceeding for any remedy available to the Trustee or exercising
any trust or power conferred on the Trustee, with respect to the Securities of
such series, provided that:

                                      -45-
<PAGE>
 
     (1) such direction shall not be in conflict with any rule of law or with
this Indenture,

     (2) the Trustee may take any other action deemed proper by the Trustee
which is not inconsistent with such direction, and

     (3) subject to the provisions of Section 6.1, the Trustee shall have the
right to decline to follow such direction if a Responsible Officer or Officers
of the Trustee shall, in good faith, determine that the proceeding so directed
would be unjustly prejudicial to the Holders not joining in any such direction
or would involve the Trustee in personal liability.

Section 5.13.  Waiver of Past Defaults.

     The Holders of not less than a majority in principal amount of the
Outstanding Securities of any series and, in the case of any Securities of a
series issued to an FBS Trust, the holders of Capital Securities issued by such
FBS Trust may waive any past default hereunder and its consequences with respect
to such series except a default:

     (1) in the payment of the principal of (or premium, if any) or interest
(including any Additional Interest) on any Security of such series, or

     (2) in respect of a covenant or provision hereof which under Article IX
cannot be modified or amended without the consent of the Holder of each
Outstanding Security of such series affected.

     Any such waiver shall be deemed to be on behalf of the Holders of all the
Securities of such series or, in the case of a waiver by holders of Capital
Securities issued by such FBS Trust, by all holders of Capital Securities issued
by such FBS Trust.

     Upon any such waiver, such default shall cease to exist, and any Event of
Default arising therefrom shall be deemed to have been cured, for every purpose
of this Indenture; but no such waiver shall extend to any subsequent or other
default or impair any right consequent thereon.

Section 5.14.  Undertaking for Costs.

     All parties to this Indenture agree, and each Holder of any Security by his
acceptance thereof shall be deemed to have agreed, that any court may in its
discretion require, in any suit for the enforcement of any right or remedy under
this Indenture, or in any suit against the Trustee for any action taken or
omitted by it as 

                                      -46-
<PAGE>
 
Trustee, the filing by any party litigant in such suit of an undertaking to pay
the costs of such suit, and that such court may in its discretion assess
reasonable costs, including reasonable attorneys' fees, against any party
litigant in such suit, having due regard to the merits and good faith of the
claims or defenses made by such party litigant; but the provisions of this
Section shall not apply to any suit instituted by the Trustee, to any suit
instituted by any Holder, or group of Holders, holding in the aggregate more
than 10% in principal amount of the Outstanding Securities of any series, or to
any suit instituted by any Holder for the enforcement of the payment of the
principal of (or premium, if any) or interest (including any Additional
Interest) on any Security on or after the respective Stated Maturities expressed
in such Security.

Section 5.15.  Waiver of Usury, Stay or Extension Laws.

     The Company covenants (to the extent that it may lawfully do so) that it
will not at any time insist upon, or plead, or in any manner whatsoever claim or
take the benefit or advantage of, any usury, stay or extension law wherever
enacted, now or at any time hereafter in force, which may affect the covenants
or the performance of this Indenture; and the Company (to the extent that it may
lawfully do so) hereby expressly waives all benefit or advantage of any such
law, and covenants that it will not hinder, delay or impede the execution of any
power herein granted to the Trustee, but will suffer and permit the execution of
every such power as though no such law had been enacted.

                                  ARTICLE VI

                                  THE TRUSTEE

Section 6.1.  Certain Duties and Responsibilities.

     (a) Except during the continuance of an Event of Default;

          (1) the Trustee undertakes to perform such duties and only such duties
as are specifically set forth in this Indenture, and no implied covenants or
obligations shall be read into this Indenture against the Trustee; and

          (2) in the absence of bad faith on its part, the Trustee may
conclusively rely, as to the truth of the statements and the correctness of the
opinions expressed therein, upon certificates or opinions furnished to the
Trustee and conforming to the requirements of this Indenture; but in the case of
any such certificates or opinions which by any provisions hereof are
specifically required to be furnished to the Trustee, the Trustee shall be under
a duty to examine the same to determine whether or not they conform to the
requirements of this Indenture.

                                      -47-
<PAGE>
 
     (b) In case an Event of Default has occurred and is continuing, the Trustee
shall exercise such of the rights and powers vested in it by this Indenture, and
use the same degree of care and skill in their exercise, as a prudent person
would exercise or use under the circumstances in the conduct of his own affairs.

     (c) No provision of this Indenture shall be construed to relieve the
Trustee from liability for its own negligent action, its own negligent failure
to act, or its own willful misconduct except that

          (1) this Subsection shall not be construed to limit the effect of
Subsection (a) of this Section;

          (2) the Trustee shall not be liable for any error of judgment made in
good faith by a Responsible Officer, unless it shall be proved that the Trustee
was negligent in ascertaining the pertinent facts; and

          (3) the Trustee shall not be liable with respect to any action taken
or omitted to be taken by it in good faith in accordance with the direction of
Holders pursuant to Section 5.12 relating to the time, method and place of
conducting any proceeding for any remedy available to the Trustee, or exercising
any trust or power conferred upon the Trustee, under this Indenture with respect
to the Securities of such series.

     (d) No provision of this Indenture shall require the Trustee to expend or
risk its own funds or otherwise incur any financial liability in the performance
of any of its duties hereunder, or in the exercise of any of its rights or
powers, if there shall be reasonable grounds for believing that repayment of
such funds or adequate indemnity against such risk or liability is not
reasonably assured to it.

     (e) Whether or not therein expressly so provided, every provision of this
Indenture relating to the conduct or affecting the liability of or affording
protection to the Trustee shall be subject to the provisions of this Section
6.1.

Section 6.2.  Notice of Defaults.

     Within 90 days after actual knowledge by a Responsible Officer of the
Trustee of the occurrence of any default hereunder with respect to the
Securities of any series, the Trustee shall transmit by mail to all Holders of
Securities of such series, as their names and addresses appear in the Securities
Register, notice of such default, unless such default shall have been cured or
waived; provided, however, that, except in the case of a default in the payment
of the principal of (or premium, if any) or interest (including any Additional
Interest) on any Security of such series, the Trustee shall be protected in
withholding such notice if and so long as the board of directors, the executive
committee or a trust committee of directors and/or 

                                      -48-
<PAGE>
 
Responsible Officers of the Trustee in good faith determines that the
withholding of such notice is in the interests of the Holders of Securities of
such series; and provided, further, that, in the case of any default of the
character specified in Section 5.1(3), no such notice to Holders of Securities
of such series shall be given until at least 30 days after the occurrence
thereof. For the purpose of this Section, the term "default" means any event
which is, or after notice or lapse of time or both would become, an Event of
Default with respect to Securities of such series.

Section 6.3.  Certain Rights of Trustee.

     Subject to the provisions of Section 6.1:

     (a) the Trustee may rely and shall be protected in acting or refraining
from acting upon any resolution, certificate, statement, instrument, opinion,
report, notice, request, direction, consent, order, bond, debenture, Security or
other paper or document believed by it to be genuine and to have been signed or
presented by the proper party or parties;

     (b) any request or direction of the Company mentioned herein shall be
sufficiently evidenced by a Company Request or Company Order and any resolution
of the Board of Directors may be sufficiently evidenced by a Board Resolution;

     (c) whenever in the administration of this Indenture the Trustee shall deem
it desirable that a matter be proved or established prior to taking, suffering
or omitting any action hereunder, the Trustee (unless other evidence be herein
specifically prescribed) may, in the absence of bad faith on its part, rely upon
an Officers' Certificate;

     (d) the Trustee may consult with counsel and the advice of such counsel or
any Opinion of Counsel shall be full and complete authorization and protection
in respect of any action taken, suffered or omitted by it hereunder in good
faith and in reliance thereon;

     (e) the Trustee shall be under no obligation to exercise any of the rights
or powers vested in it by this Indenture at the request or direction of any of
the Holders pursuant to this Indenture, unless such Holders shall have offered
to the Trustee reasonable security or indemnity against the costs, expenses and
liabilities which might be incurred by it in compliance with such request or
direction;

     (f) the Trustee shall not be bound to make any investigation into the facts
or matters stated in any resolution, certificate, statement, instrument,
opinion, report, notice, request, direction, consent, order, bond, indenture,
Security or other paper or document, but the Trustee in its discretion may make
such inquiry or investigation into such facts or matters as it may see fit, and,
if the Trustee shall 

                                      -49-
<PAGE>
 
determine to make such inquiry or investigation, it shall be entitled to examine
the books, records and premises of the Company, personally or by agent or
attorney; and

     (g) the Trustee may execute any of the trusts or powers hereunder or
perform any duties hereunder either directly or by or through agents or
attorneys and the Trustee shall not be responsible for any misconduct or
negligence on the part of any agent or attorney appointed with due care by it
hereunder.

Section 6.4.  Not Responsible for Recitals or Issuance of Securities.

     The recitals contained herein and in the Securities, except the Trustee's
certificates of authentication, shall be taken as the statements of the Company,
and neither the Trustee nor any Authenticating Agent assumes any responsibility
for their correctness.  The Trustee makes no representations as to the validity
or sufficiency of this Indenture or of the Securities.  Neither the Trustee nor
any Authenticating Agent shall be accountable for the use or application by the
Company of the Securities or the proceeds thereof.

Section 6.5.  May Hold Securities.

     The Trustee, any Authenticating Agent, any Paying Agent, any Securities
Registrar or any other agent of the Company, in its individual or any other
capacity, may become the owner or pledgee of Securities and, subject to Sections
6.8 and 6.13, may otherwise deal with the Company with the same rights it would
have if it were not Trustee, Authenticating Agent, Paying Agent, Securities
Registrar or such other agent.

Section 6.6.  Money Held in Trust.

     Money held by the Trustee in trust hereunder need not be segregated from
other funds except to the extent required by law.  The Trustee shall be under no
liability for interest on any money received by it hereunder except as otherwise
agreed with the Company.

Section 6.7.  Compensation and Reimbursement.

The Company agrees

     (1) to pay to the Trustee from time to time compensation for all services
rendered by it hereunder in such amounts as the Company and the Trustee shall
agree from time to time (which compensation shall not be limited by any
provision of law in regard to the compensation of a trustee of an express
trust);

                                      -50-
<PAGE>
 
     (2) to reimburse the Trustee upon its request for all reasonable expenses,
disbursements and advances incurred or made by the Trustee in accordance with
any provision of this Indenture (including the reasonable compensation and the
expenses and disbursements of its agents and counsel), except any such expense,
disbursement or advance as may be attributable to its negligence or bad faith;
and

     (3) to indemnify the Trustee for, and to hold it harmless against, any
loss, liability or expense (including the reasonable compensation and the
expenses and disbursements of its agents and counsel) incurred without
negligence or bad faith, arising out of or in connection with the acceptance or
administration of this trust or the performance of its duties hereunder,
including the costs and expenses of defending itself against any claim or
liability in connection with the exercise or performance of any of its powers or
duties hereunder.  This indemnification shall survive the termination of this
Agreement.

     To secure the Company's payment obligations in this Section 6.7, the
Company and the Holders agree that the Trustee shall have a lien prior to the
Securities on all money or property held or collected by the Trustee.  Such lien
shall survive the satisfaction and discharge of this Indenture.

     When the Trustee incurs expenses or renders services after an Event of
Default specified in Section 5.1(4) or (5) occurs, the expenses and the
compensation for the services are intended to constitute expenses of
administration under the Bankruptcy Reform Act of 1978 or any successor statute.

Section 6.8.  Disqualification; Conflicting Interests.

     The Trustee for the Securities of any series issued hereunder shall be
subject to the provisions of Section 310(b) of the Trust Indenture Act.  Nothing
herein shall prevent the Trustee from filing with the Commission the application
referred to in the second to last paragraph of said Section 301(b).

Section 6.9.  Corporate Trustee Required; Eligibility.

There shall at all times be a Trustee hereunder which shall be

     (a) a corporation organized and doing business under the laws of the United
States of America or of any State or Territory or the District of Columbia,
authorized under such laws to exercise corporate trust powers and subject to
supervision or examination by Federal, State, Territorial or District of
Columbia authority, or

     (b) a corporation or other Person organized and doing business under the
laws of a foreign government that is permitted to act as Trustee pursuant to a

                                      -51-
<PAGE>
 
rule, regulation or order of the Commission, authorized under such laws to
exercise corporate trust powers, and subject to supervision or examination by
authority of such foreign government or a political subdivision thereof
substantially equivalent to supervision or examination applicable to United
States institutional trustees,

in either case having a combined capital and surplus of at least $50,000,000,
subject to supervision or examination by Federal or State authority.  If such
corporation publishes reports of condition at least annually, pursuant to law or
to the requirements of the aforesaid supervising or examining authority, then,
for the purposes of this Section 6.9, the combined capital and surplus of such
corporation shall be deemed to be its combined capital and surplus as set forth
in its most recent report of condition so published.  If at any time the Trustee
shall cease to be eligible in accordance with the provisions of this Section
6.9, it shall resign immediately in the manner and with the effect hereinafter
specified in this Article VI.  Neither the Company nor any Person directly or
indirectly controlling, controlled by or under common control with the Company
shall serve as Trustee for the Securities of any series issued hereunder.

Section 6.10.  Resignation and Removal; Appointment of Successor.

     (a) No resignation or removal of the Trustee and no appointment of a
successor Trustee pursuant to this Article VI shall become effective until the
acceptance of appointment by the successor Trustee under Section 6.11.

     (b) The Trustee may resign at any time with respect to the Securities of
one or more series by giving written notice thereof to the Company.  If an
instrument of acceptance by a successor Trustee shall not have been delivered to
the Trustee within 30 days after the giving of such notice of resignation, the
resigning Trustee may petition any court of competent jurisdiction for the
appointment of a successor Trustee with respect to the Securities of such
series.

     (c) The Trustee may be removed at any time with respect to the Securities
of any series by Act of the Holders of a majority in principal amount of the
Outstanding Securities of such series, delivered to the Trustee and to the
Company.

     (d) If at any time:

     (1) the Trustee shall fail to comply with Section 6.8 after written request
therefor by the Company or by any Holder who has been a bona fide Holder of a
Security for at least six months, or

     (2) the Trustee shall cease to be eligible under Section 6.9 and shall fail
to resign after written request therefor by the Company or by any such Holder,
or

                                      -52-
<PAGE>
 
     (3) the Trustee shall become incapable of acting or shall be adjudged a
bankrupt or insolvent or a receiver of the Trustee or of its property shall be
appointed or any public officer shall take charge or control of the Trustee or
of its property or affairs for the purpose of rehabilitation, conservation or
liquidation,

then, in any such case, (i) the Company, acting pursuant to the authority of a
Board Resolution, may remove the Trustee with respect to all Securities, or (ii)
subject to Section 5.14, any Holder who has been a bona fide Holder of a
Security for at least six months may, on behalf of himself and all others
similarly situated, petition any court of competent jurisdiction for the removal
of the Trustee with respect to all Securities and the appointment of a successor
Trustee or Trustees.

     (e) If the Trustee shall resign, be removed or become incapable of acting,
or if a vacancy shall occur in the office of Trustee for any cause with respect
to the Securities of one or more series, the Company, by a Board Resolution,
shall promptly appoint a successor Trustee with respect to the Securities of
that or those series.  If, within one year after such resignation, removal or
incapability, or the occurrence of such vacancy, a successor Trustee with
respect to the Securities of any series shall be appointed by Act of the Holders
of a majority in principal amount of the Outstanding Securities of such series
delivered to the Company and the retiring Trustee, the successor Trustee so
appointed shall, forthwith upon its acceptance of such appointment, become the
successor Trustee with respect to the Securities of such series and supersede
the successor Trustee appointed by the Company.  If no successor Trustee with
respect to the Securities of any series shall have been so appointed by the
Company or the Holders and accepted appointment in the manner hereinafter
provided, any Holder who has been a bona fide Holder of a Security for at least
six months may, subject to Section 5.14, on behalf of himself and all others
similarly situated, petition any court of competent jurisdiction for the
appointment of a successor Trustee with respect to the Securities of such
series.

     (f) The Company shall give notice of each resignation and each removal of
the Trustee with respect to the Securities of any series and each appointment of
a successor Trustee with respect to the Securities of any series by mailing
written notice of such event by first-class mail, postage prepaid, to the
Holders of Securities of such series as their names and addresses appear in the
Securities Register.  Each notice shall include the name of the successor
Trustee with respect to the Securities of such series and the address of its
Corporate Trust Office.

Section 6.11.  Acceptance of Appointment by Successor.

     (a) In case of the appointment hereunder of a successor Trustee with
respect to all Securities, every such successor Trustee so appointed shall
execute, acknowledge and deliver to the Company and to the retiring Trustee an
instrument 

                                      -53-
<PAGE>
 
accepting such appointment, and thereupon the resignation or removal of the
retiring Trustee shall become effective and such successor Trustee, without any
further act, deed or conveyance, shall become vested with all the rights,
powers, trusts and duties of the retiring Trustee; but, on the request of the
Company or the successor Trustee, such retiring Trustee shall, upon payment of
its charges, execute and deliver an instrument transferring to such successor
Trustee all the rights, powers and trusts of the retiring Trustee and shall duly
assign, transfer and deliver to such successor Trustee all property and money
held by such retiring Trustee hereunder.

     (b) In case of the appointment hereunder of a successor Trustee with
respect to the Securities of one or more (but not all) series, the Company, the
retiring Trustee and each successor Trustee with respect to the Securities of
one or more series shall execute and deliver an indenture supplemental hereto
wherein each successor Trustee shall accept such appointment and which (1) shall
contain such provisions as shall be necessary or desirable to transfer and
confirm to, and to vest in, each successor Trustee all the rights, powers,
trusts and duties of the retiring Trustee with respect to the Securities of that
or those series to which the appointment of such successor Trustee relates, (2)
if the retiring Trustee is not retiring with respect to all Securities, shall
contain such provisions as shall be deemed necessary or desirable to confirm
that all the rights, powers, trusts and duties of the retiring Trustee with
respect to the Securities of that or those series as to which the retiring
Trustee is not retiring shall continue to be vested in the retiring Trustee, and
(3) shall add to or change any of the provisions of this Indenture as shall be
necessary to provide for or facilitate the administration of the trusts
hereunder by more than one Trustee, it being understood that nothing herein or
in such supplemental indenture shall constitute such Trustees co-trustees of the
same trust and that each such Trustee shall be trustee of a trust or trusts
hereunder separate and apart from any trust or trusts hereunder administered by
any other such Trustee and upon the execution and delivery of such supplemental
indenture the resignation or removal of the retiring Trustee shall become
effective to the extent provided therein and each such successor Trustee,
without any further act, deed or conveyance, shall become vested with all the
rights, powers, trusts, and duties of the retiring Trustee with respect to the
Securities of that or those series to which the appointment of such successor
Trustee relates; but, on request of the Company or any successor Trustee, such
retiring Trustee shall duly assign, transfer and deliver to such successor
Trustee all property and money held by such retiring Trustee hereunder with
respect to the Securities of that or those series to which the appointment of
such successor Trustee relates.

     (c) Upon request of any such successor Trustee, the Company shall execute
any and all instruments for more fully and certainly vesting in and confirming
to such successor Trustee all rights, powers and trusts referred to in paragraph
(a) or (b) of this Section 6.11, as the case may be.

                                      -54-
<PAGE>
 
     (d) No successor Trustee shall accept its appointment unless at the time of
such acceptance such successor Trustee shall be qualified and eligible under
this Article VI.

Section 6.12.  Merger, Conversion, Consolidation or Succession to Business.

     Any corporation into which the Trustee may be merged or converted or with
which it may be consolidated, or any corporation resulting from any merger,
conversion or consolidation to which the Trustee shall be a party, or any
corporation succeeding to all or substantially all of the corporate trust
business of the Trustee, shall be the successor of the Trustee hereunder,
provided such corporation shall be otherwise qualified and eligible under this
Article VI, without the execution or filing of any paper or any further act on
the part of any of the parties hereto.  In case any Securities shall have been
authenticated, but not delivered, by the Trustee then in office, any successor
by merger, conversion or consolidation to such authenticating Trustee may adopt
such authentication and deliver the Securities so authenticated, and in case any
Securities shall not have been authenticated, any successor to the Trustee may
authenticate such Securities either in the name of any predecessor Trustee or in
the name of such successor Trustee, and in all cases the certificate of
authentication shall have the full force which it is provided anywhere in the
Securities or in this Indenture that the certificate of the Trustee shall have.

Section 6.13.  Preferential Collection of Claims Against Company.

     If and when the Trustee shall be or become a creditor of the Company (or
any other obligor upon the Securities), the Trustee shall be subject to the
provisions of the Trust Indenture Act regarding the collection of claims against
the Company (or any such other obligor).

Section 6.14.  Appointment of Authenticating Agent.

     The Trustee may appoint an Authenticating Agent or Agents with respect to
one or more series of Securities which shall be authorized to act on behalf of
the Trustee to authenticate Securities of such series issued upon original issue
and upon exchange, registration of transfer or partial redemption thereof or
pursuant to Section 3.6, and Securities so authenticated shall be entitled to
the benefits of this Indenture and shall be valid and obligatory for all
purposes as if authenticated by the Trustee hereunder.  Wherever reference is
made in this Indenture to the authentication and delivery of Securities by the
Trustee or the Trustee's certificate of authentication, such reference shall be
deemed to include authentication and delivery on behalf of the Trustee by an
Authenticating Agent.  Each Authenticating Agent shall be acceptable to the
Company and shall at all times be a corporation 

                                      -55-
<PAGE>
 
organized and doing business under the laws of the United States of America, or
of any State or Territory or the District of Columbia, authorized under such
laws to act as Authenticating Agent, having a combined capital and surplus of
not less than $50,000,000 and subject to supervision or examination by Federal
or State authority. If such Authenticating Agent publishes reports of condition
at least annually, pursuant to law or to the requirements of said supervising or
examining authority, then for the purposes of this Section 6.14 the combined
capital and surplus of such Authenticating Agent shall be deemed to be its
combined capital and surplus as set forth in its most recent report of condition
so published. If at any time an Authenticating Agent shall cease to be eligible
in accordance with the provisions of this Section 6.14, such Authenticating
Agent shall resign immediately in the manner and with the effect specified in
this Section 6.14.

     Any corporation into which an Authenticating Agent may be merged or
converted or with which it may be consolidated, or any corporation resulting
from any merger, conversion or consolidation to which such Authenticating Agent
shall be a party, or any corporation succeeding to all or substantially all of
the corporate trust business of an Authenticating Agent shall be the successor
Authenticating Agent hereunder, provided such corporation shall be otherwise
eligible under this Section, without the execution or filing of any paper or any
further act on the part of the Trustee or the Authenticating Agent.

     An Authenticating Agent may resign at any time by giving written notice
thereof to the Trustee and to the Company.  The Trustee may at any time
terminate the agency of an Authenticating Agent by giving written notice thereof
to such Authenticating Agent and to the Company.  Upon receiving such a notice
of resignation or upon such a termination, or in case at any time such
Authenticating Agent shall cease to be eligible in accordance with the
provisions of this Section 6.14, the Trustee may appoint a successor
Authenticating Agent which shall be acceptable to the Company and shall give
notice of such appointment in the manner provided in Section 1.6 to all Holders
of Securities of the series with respect to which such Authenticating Agent will
serve.  Any successor Authenticating Agent upon acceptance of its appointment
hereunder shall become vested with all the rights, powers and duties of its
predecessor hereunder, with like effect as if originally named as an
Authenticating Agent.  No successor Authenticating Agent shall be appointed
unless eligible under the provision of this Section 6.14.

     The Trustee agrees to pay to each Authenticating Agent from time to time
reasonable compensation for its services under this Section 6.14, and the
Trustee shall be entitled to be reimbursed for such payments, subject to the
provisions of Section 6.7.

     If an appointment with respect to one or more series is made pursuant to
this Section 6.14, the Securities of such series may have endorsed thereon, in
addition to 

                                      -56-
<PAGE>
 
the Trustee's certificate of authentication, an alternative certificate of
authentication in the following form:

     This is one of the Securities referred to in the within mentioned
Indenture.

Dated:

                                    WILMINGTON TRUST COMPANY,
                                     As Trustee

                                    By:_________________________
                                       As Authenticating Agent

                                    By:_________________________
                                       Authorized Officer


                                  ARTICLE VII

               HOLDERS' LISTS AND REPORTS BY TRUSTEE AND COMPANY

Section 7.1.  Company to Furnish Trustee Names and Addresses of Holders.

     The Company will furnish or cause to be furnished to the Trustee:

     (a) semi-annually, not more than 15 days after January 15 and July 15 in
each year, a list, in such form as the Trustee may reasonably require, of the
names and addresses of the Holders as of January 1 and July 1 of such year, and

     (b) at such other times as the Trustee may request in writing, within 30
days after the receipt by the Company of any such request, a list of similar
form and content as of a date not more than 15 days prior to the time such list
is furnished,

excluding from any such list names and addresses received by the Trustee in its
capacity as Securities Registrar.

Section 7.2.  Preservation of Information, Communications to Holders.

     (a) The Trustee shall preserve, in as current a form as is reasonably
practicable, the names and addresses of Holders contained in the most recent
list furnished to the Trustee as provided in Section 7.1 and the names and
addresses of Holders received by the Trustee in its capacity as Securities
Registrar.  The Trustee 

                                      -57-
<PAGE>
 
may destroy any list furnished to it as provided in Section 7.1 upon receipt of
a new list so furnished.

     (b) The rights of Holders to communicate with other Holders with respect to
their rights under this Indenture or under the Securities, and the corresponding
rights and privileges of the Trustee, shall be as provided in the Trust
Indenture Act.

     (c) Every Holder of Securities, by receiving and holding the same, agrees
with the Company and the Trustee that neither the Company nor the Trustee nor
any agent of either of them shall be held accountable by reason of the
disclosure of information as to the names and addresses of the Holders made
pursuant to the Trust Indenture Act.

Section 7.3.  Reports by Trustee.

     (a) The Trustee shall transmit to Holders such reports concerning the
Trustee and its actions under this Indenture as may be required pursuant to the
Trust Indenture Act, at the times and in the manner provided pursuant thereto.

     (b) Reports so required to be transmitted at stated intervals of not more
than 12 months shall be transmitted no later than July 15 in each calendar year,
commencing with the first July 15 after the first issuance of Securities under
this Indenture.

     (c) A copy of each such report shall, at the time of such transmission to
Holders, be filed by the Trustee with each stock exchange upon which any
Securities are listed and also with the Commission.  The Company will notify the
Trustee when any Securities are listed on any stock exchange.

Section 7.4.  Reports by Company.

     The Company shall file with the Trustee and with the Commission, and
transmit to Holders, such information, documents and other reports, and such
summaries thereof, as may be required pursuant to the Trust Indenture Act at the
times and in the manner provided in the Trust Indenture Act; provided that any
such information, documents or reports required to be filed with the Commission
pursuant to Section 13 or Section 15(d) of the Exchange Act shall be filed with
the Trustee within 15 days after the same is required to be filed with the
Commission.  Notwithstanding that the Company may not be required to remain
subject to the reporting requirements of Section 13 or 15(d) of the Exchange
Act, the Company shall continue to file with the Commission and provide the
Trustee with the annual reports and the information, documents and other reports
which are 

                                      -58-
<PAGE>
 
specified in Sections 13 and 15(d) of the Exchange Act. The Company also shall
comply with the other provisions of Trust Indenture Act Section 314(a).

                                 ARTICLE VIII

             CONSOLIDATION, MERGER, CONVEYANCE, TRANSFER OR LEASE

Section 8.1.  Company May Consolidate, Etc., Only on Certain Terms.

     The Company shall not consolidate with or merge into any other Person or
convey, transfer or lease its properties and assets substantially as an entirety
to any Person, and no Person shall consolidate with or merge into the Company or
convey, transfer or lease its properties and assets substantially as an entirety
to the Company, unless:

     (1) in case the Company shall consolidate with or merge into another Person
or convey, transfer or lease its properties and assets substantially as an
entirety to any Person, the corporation formed by such consolidation or into
which the Company is merged or the Person which acquires by conveyance or
transfer, or which leases, the properties and assets of the Company
substantially as an entirety shall be a corporation, partnership or trust
organized and existing under the laws of the United States of America or any
State or the District of Columbia, and shall expressly assume, by an indenture
supplemental hereto, executed and delivered to the Trustee, in form satisfactory
to the Trustee, the due and punctual payment of the principal of (and premium,
if any) and interest (including any Additional Interest) on all the Securities
and the performance of every covenant of this Indenture on the part of the
Company to be performed or observed;

     (2) immediately after giving effect to such transaction, no Event of
Default, and no event which, after notice or lapse of time, or both, would
become an Event of Default, shall have happened and be continuing;

     (3) in the case of the Securities of a series issued to an FBS Trust, such
consolidation, merger, conveyance, transfer or lease is permitted under the
related Trust Agreement and related FBS Guarantee and does not give rise to any
breach or violation of the related Trust Agreement or related FBS Guarantee; and

     (4) the Company has delivered to the Trustee an Officers' Certificate and
an Opinion of Counsel, each stating that such consolidation, merger, conveyance,
transfer or lease and any such supplemental indenture comply with this Article
and that all conditions precedent herein provided for relating to such
transaction have been complied with; and the Trustee, subject to Section 6.1,
may rely upon such Officers' Certificate and Opinion of Counsel as conclusive
evidence that such transaction complies with this Section 8.1.

                                      -59-
<PAGE>
 
Section 8.2.  Successor Corporation Substituted.

     Upon any consolidation or merger by the Company with or into any other
Person, or any conveyance, transfer or lease by the Company of its properties
and assets substantially as an entirety to any Person in accordance with Section
8.1, the successor corporation formed by such consolidation or into which the
Company is merged or to which such conveyance, transfer or lease is made shall
succeed to, and be substituted for, and may exercise every right and power of,
the Company under this Indenture with the same effect as if such successor
Person had been named as the Company herein; and in the event of any such
conveyance, transfer or lease the Company shall be discharged from all
obligations and covenants under the Indenture and the Securities and may be
dissolved and liquidated.

     Such successor Person may cause to be signed, and may issue either in its
own name or in the name of the Company, any or all of the Securities issuable
hereunder which theretofore shall not have been signed by the Company and
delivered to the Trustee; and, upon the order of such successor Person instead
of the Company and subject to all the terms, conditions and limitations in this
Indenture prescribed, the Trustee shall authenticate and shall deliver any
Securities which previously shall have been signed and delivered by the officers
of the Company to the Trustee for authentication pursuant to such provisions and
any Securities which such successor Person thereafter shall cause to be signed
and delivered to the Trustee on its behalf for the purpose pursuant to such
provisions.  All the Securities so issued shall in all respects have the same
legal rank and benefit under this Indenture as the Securities theretofore or
thereafter issued in accordance with the terms of this Indenture as though all
of such Securities had been issued at the date of the execution hereof.

     In case of any such consolidation, merger, sale, conveyance or lease, such
changes in phraseology and form may be made in the Securities thereafter to be
issued as may be appropriate.


                                  ARTICLE IX

                            SUPPLEMENTAL INDENTURES

Section 9.1.  Supplemental Indentures without Consent of Holders.

     Without the consent of any Holders, the Company, when authorized by a Board
Resolution, and the Trustee, at any time and from time to time, may enter into
one or more indentures supplemental hereto, in form satisfactory to the Trustee,
provided, however, that the form and terms of Securities of any series may 

                                      -60-
<PAGE>
 
be established by a Board Resolution, as set forth in the Officers' Certificate
delivered to the Trustee pursuant to Section 3.1, without entering into a
supplemental indenture for all purposes hereunder, for any of the following
purposes:

     (1) to evidence the succession of another Person to the Company, and the
assumption by any such successor of the covenants of the Company herein and in
the Securities contained; or

     (2) to convey, transfer, assign, mortgage or pledge any property to or with
the Trustee or to surrender any right or power herein conferred upon the
Company; or

     (3) to establish the form or terms of Securities of any series as permitted
by Sections 2.1 or 3.1; or

     (4) to add to the covenants of the Company for the benefit of the Holders
of all or any series of Securities (and if such covenants are to be for the
benefit of less than all series of Securities, stating that such covenants are
expressly being included solely for the benefit of such series) or to surrender
any right or power herein conferred upon the Company; or

     (5) to add any additional Events of Default for the benefit of the Holders
of all or any series of Securities (and if such additional Events of Default are
to be for the benefit of less than all series of Securities, stating that such
additional Events of Default are expressly being included solely for the benefit
of such series); or

     (6) to change or eliminate any of the provisions of this Indenture,
provided that any such change or elimination shall become effective only when
there is no Security Outstanding of any series created prior to the execution of
such supplemental indenture which is entitled to the benefit of such provision;
or

     (7) to cure any ambiguity, to correct or supplement any provision herein
which may be defective or inconsistent with any other provision herein, or to
make any other provisions with respect to matters or questions arising under
this Indenture, provided that such action pursuant to this clause (7) shall not
adversely affect the interest of the Holders of Securities of any series in any
material respect or, in the case of the Securities of a series issued to an FBS
Trust and for so long as any of the corresponding series of Capital Securities
issued by such FBS Trust shall remain outstanding, the holders of such Capital
Securities; or

     (8) to evidence and provide for the acceptance of appointment hereunder by
a successor Trustee with respect to the Securities of one or more series and to
add to or change any of the provisions of this Indenture as shall be necessary

                                      -61-
<PAGE>
 
to provide for or facilitate the administration of the trusts hereunder by more
than one Trustee, pursuant to the requirements of Section 6.11(b); or

     (9) to comply with the requirements of the Commission in order to effect or
maintain the qualification of this Indenture under the Trust Indenture Act.

Section 9.2.  Supplemental Indentures with Consent of Holders.

     With the consent of the Holders of not less than a majority in principal
amount of the Outstanding Securities of each series affected by such
supplemental indenture, by Act of said Holders delivered to the Company and the
Trustee, the Company, when authorized by a Board Resolution, and the Trustee may
enter into an indenture or indentures supplemental hereto for the purpose of
adding any provisions to or changing in any manner or eliminating any of the
provisions of this Indenture or of modifying in any manner the rights of the
Holders of Securities of such series under this Indenture; provided, however,
that no such supplemental indenture shall, without the consent of the Holder of
each Outstanding Security affected thereby,

     (1) except to the extent permitted by Section 3.11 or as otherwise
specified as contemplated by Section 2.1 or Section 3.1 with respect to the
deferral of the payment of interest on the Securities of any series, change the
Stated Maturity of the principal of, or any installment of interest (including
any Additional Interest) on, any Security, or reduce the principal amount
thereof or the rate of interest thereon or reduce any premium payable upon the
redemption thereof, or reduce the amount of principal of a Discount Security
that would be due and payable upon a declaration of acceleration of the Maturity
thereof pursuant to Section 5.2, or change the place of payment where, or the
coin or currency in which, any Security or interest thereon is payable, or
impair the right to institute suit for the enforcement of any such payment on or
after the Stated Maturity thereof (or, in the case of redemption, on or after
the Redemption Date), or

     (2) reduce the percentage in principal amount of the Outstanding Securities
of any series, the consent of whose Holders is required for any such
supplemental indenture, or the consent of whose Holders is required for any
waiver (of compliance with certain provisions of this Indenture or certain
defaults hereunder and their consequences) provided for in this Indenture, or

     (3) modify any of the provisions of this Section, Section 5.13 or Section
10.5, except to increase any such percentage or to provide that certain other
provisions of this Indenture cannot be modified or waived without the consent of
the Holder of each Security affected thereby; or

                                      -62-
<PAGE>
 
     (4) modify the provisions in Article XIII of this Indenture with respect to
the subordination of Outstanding Securities of any series in a manner adverse to
the Holders thereof;

provided, further, that, in the case of the Securities of a series issued to an
FBS Trust, so long as any of the corresponding series of Capital Securities
issued by such FBS Trust remains outstanding, (i) no such amendment shall be
made that adversely affects the holders of such Capital Securities in any
material respect, and no termination of this Indenture shall occur, and no
waiver of any Event of Default or compliance with any covenant under this
Indenture shall be effective, without the prior consent of the holders of at
least a majority of the aggregate liquidation preference of such Capital
Securities then outstanding unless and until the principal (and premium, if any)
of the Securities of such series and all accrued and, subject to Section 3.7,
unpaid interest (including any Additional Interest) thereon have been paid in
full and (ii) no amendment shall be made to Section 5.8 of this Indenture that
would impair the rights of the holders of Capital Securities provided therein
without the prior consent of the holders of each Capital Security then
outstanding unless and until the principal (and premium, if any) of the
Securities of such series and all accrued and (subject to Section 3.7) unpaid
interest (including any Additional Interest) thereon have been paid in full.

     A supplemental indenture that changes or eliminates any covenant or other
provision of this Indenture that has expressly been included solely for the
benefit of one or more particular series of Securities or Capital Securities, or
which modifies the rights of the Holders of Securities or holders of Capital
Securities of such series with respect to such covenant or other provision,
shall be deemed not to affect the rights under this Indenture of the Holders of
Securities or holders of Capital Securities of any other series.

     It shall not be necessary for any Act of Holders under this Section to
approve the particular form of any proposed supplemental indenture, but it shall
be sufficient if such Act shall approve the substance thereof.

Section 9.3.  Execution of Supplemental Indentures.

     In executing or accepting the additional series of Securities created by
any supplemental indenture permitted by this Article or the modifications
thereby of any series of Securities previously created by this Indenture, the
Trustee shall be entitled to receive, and (subject to Section 6.1) shall be
fully protected in relying upon, an Officers' Certificate and an Opinion of
Counsel stating that the execution of such supplemental indenture is authorized
or permitted by this Indenture, and that all conditions precedent have been
complied with.  The Trustee may, but shall not be obligated to, enter into any
such supplemental indenture which affects the Trustee's own rights, duties or
immunities under this Indenture or otherwise.

                                      -63-
<PAGE>
 
Section 9.4.  Effect of Supplemental Indentures.

     Upon the execution of any supplemental indenture under this Article IX or
delivery to the Trustee of the Officers' Certificate pursuant to Section 3.1
hereof (which Officers' Certificate shall have the effect of a supplemental
indenture for all purposes hereunder), this Indenture shall be modified in
accordance therewith, and such supplemental indenture shall form a part of this
Indenture for all purposes; and every Holder of Securities theretofore or
thereafter authenticated and delivered hereunder shall be bound thereby.

Section 9.5.  Conformity with Trust Indenture Act.

     Every supplemental indenture executed pursuant to this Article IX and every
Officers' Certificate delivered to the trustee pursuant to Section 3.1 hereof
shall conform to the requirements of the Trust Indenture Act as then in effect.

Section 9.6.  Reference in Securities to Supplemental Indentures.

     Securities authenticated and delivered after the execution of any
supplemental indenture pursuant to this Article IX or delivery to the Trustee of
the Officers' Certificate pursuant to Section 3.1 hereof (which Officers'
Certificate shall have the effect of a supplemental indenture for all purposes
hereunder) may, and shall if required by the Company, bear a notation in form
approved by the Company as to any matter provided for in such supplemental
indenture or such Officers' Certificate.  If the Company shall so determine, new
Securities of any series so modified as to conform, in the opinion of the
Company, to any such supplemental indenture or such Officers's Certificate may
be prepared and executed by the Company and authenticated and delivered by the
Trustee in exchange for Outstanding Securities of such series.

                                   ARTICLE X

                                   COVENANTS

Section 10.1.  Payment of Principal, Premium and Interest.

     The Company covenants and agrees for the benefit of each series of
securities that it will duly and punctually pay the principal of (and premium,
if any) and interest on the Securities of that series in accordance with the
terms of such Securities and this Indenture.

                                      -64-
<PAGE>
 
Section 10.2.  Maintenance of Office or Agency.

     The Company will maintain in each Place of Payment for any series of
Securities, an office or agency where Securities of that series may be presented
or surrendered for payment and an office or agency where Securities of that
series may be surrendered for transfer or exchange and where notices and demands
to or upon the Company in respect of the Securities of that series and this
Indenture may be served.  The Company initially appoints the Trustee, acting
through its Corporate Trust Office, as its agent for said purposes.  The Company
will give prompt written notice to the Trustee of any change in the location of
any such office or agency.  If at any time the Company shall fail to maintain
such office or agency or shall fail to furnish the Trustee with the address
thereof, such presentations, surrenders, notices and demands may be made or
served at the Corporate Trust Office of the Trustee, and the Company hereby
appoints the Trustee as its agent to receive all such presentations, surrenders,
notices and demands.

     The Company may also from time to time designate one or more other offices
or agencies where the Securities may be presented or surrendered for any or all
of such purposes, and may from time to time rescind such designations; provided,
however, that no such designation or rescission shall in any manner relieve the
Company of its obligation to maintain an office or agency in each Place of
Payment for Securities of any series for such purposes.  The Company will give
prompt written notice to the Trustee of any such designation and any change in
the location of any such office or agency.

Section 10.3.  Money for Security Payments to be Held in Trust.

     If the Company shall at any time act as its own Paying Agent with respect
to any series of Securities, it will, on or before each due date of the
principal of (and premium, if any) or interest on any of the Securities of such
series, segregate and hold in trust for the benefit of the Persons entitled
thereto a sum sufficient to pay the principal (and premium, if any) or interest
so becoming due until such sums shall be paid to such Persons or otherwise
disposed of as herein provided, and will promptly notify the Trustee of its
failure so to act.

     Whenever the Company shall have one or more Paying Agents, it will, prior
to 10:00 a.m. New York City time on each due date of the principal of or
interest on any Securities, deposit with a Paying Agent a sum sufficient to pay
the principal (and premium, if any) or interest so becoming due, such sum to be
held in trust for the benefit of the Persons entitled to such principal and
premium (if any) or interest, 

                                      -65-
<PAGE>
 
and (unless such Paying Agent is the Trustee) the Company will promptly notify
the Trustee of its failure so to act.

     The Company will cause each Paying Agent other than the Trustee to execute
and deliver to the Trustee an instrument in which such Paying Agent shall agree
with the Trustee, subject to the provisions of this Section 10.3, that such
Paying Agent will:

     (1) hold all sums held by it for the payment of the principal of (and
premium, if any) or interest on Securities in trust for the benefit of the
Persons entitled thereto until such sums shall be paid to such Persons or
otherwise disposed of as herein provided;

     (2) give the Trustee notice of any default by the Company (or any other
obligor upon the Securities) in the making of any payment of principal (and
premium, if any) or interest:

     (3) at any time during the continuance of any such default, upon the
written request of the Trustee, forthwith pay to the Trustee all sums so held in
trust by such Paying Agent; and

     (4) comply with the provisions of the Trust Indenture Act applicable to it
as a Paying Agent.

     The Company may at any time, for the purpose of obtaining the satisfaction
and discharge of this Indenture or for any other purpose, pay, or by Company
Order direct any Paying Agent to pay, to the Trustee all sums held in trust by
the Company or such Paying Agent, such sums to be held by the Trustee upon the
same trusts as those upon which such sums were held by the Company or such
Paying Agent; and, upon such payment by any Paying Agent to the Trustee, such
Paying Agent shall be released from all further liability with respect to such
money.

     Any money deposited with the Trustee or any Paying Agent, or then held by
the Company, in trust for the payment of the principal of (and premium, if any)
or interest on any Security and remaining unclaimed for two years after such
principal (and premium, if any) or interest has become due and payable shall
(unless otherwise required by mandatory provision of applicable escheat or
abandoned or unclaimed property law) be paid on Company Request to the Company,
or (if then held by the Company) shall (unless otherwise required by mandatory
provision of applicable escheat or abandoned or unclaimed property law) be
discharged from such trust; and the Holder of such Security shall thereafter, as
an unsecured general creditor, look only to the Company for payment thereof, and
all liability of the Trustee or such Paying Agent with respect to such trust
money, and all liability of the Company as trustee thereof, shall thereupon
cease; provided, however, that the 

                                      -66-
<PAGE>
 
Trustee or such Paying Agent, before being required to make any such repayment,
may at the expense of the Company cause to be published once, in a newspaper
published in the English language, customarily published on each Business Day
and of general circulation in the Borough of Manhattan, The City of New York,
notice that such money remains unclaimed and that, after a date specified
therein, which shall not be less than 30 days from the date of such publication,
any unclaimed balance of such money then remaining will be repaid to the
Company.

Section 10.4.  Statement as to Compliance.

     The Company shall deliver to the Trustee, within 120 days after the end of
each calendar year of the Company ending after the date hereof, an Officers'
Certificate covering the preceding calendar year, stating whether or not to the
best knowledge of the signers thereof the Company is in default in the
performance, observance or fulfillment of or compliance with any of the terms,
provisions, covenants and conditions of this Indenture, and if the Company shall
be in default, specifying all such defaults and the nature and status thereof of
which they may have knowledge.  For the purpose of this Section 10.4, compliance
shall be determined without regard to any grace period or requirement of notice
provided pursuant to the terms of this Indenture.

Section 10.5.  Waiver of Certain Covenants.

     The Company may omit in any particular instance to comply with any covenant
or condition provided pursuant to Sections 3.1, 9.1(3), or 9.1(4) with respect
to the Securities of any series, if before or after the time for such compliance
the Holders of at least a majority in principal amount of the Outstanding
Securities of such series shall, by Act of such Holders, either waive such
compliance in such instance or generally waive compliance with such covenant or
condition, but no such waiver shall extend to or affect such covenant or
condition except to the extent so expressly waived, and, until such waiver shall
become effective, the obligations of the Company in respect of any such covenant
or condition shall remain in full force and effect.

Section 10.6.  Additional Sums.

     In the case of the Securities of a series issued to an FBS Trust, so long
as no Event of Default has occurred and is continuing and except as otherwise
specified as contemplated by Section 2.1 or Section 3.1, in the event that
(i) such FBS Trust is the Holder of all of the Outstanding Securities of such
series, (ii) a Tax Event in respect of such FBS Trust shall have occurred and be
continuing and (iii) the Company shall not have (A) redeemed the Securities of
such series pursuant to Section 11.7(b) or (B) terminated such FBS Trust
pursuant to Section 9.2(b) of the related Trust Agreement, the Company shall pay
to such FBS Trust (and its permitted successors 

                                      -67-
<PAGE>
 
or assigns under the related Trust Agreement) for so long as such FBS Trust (or
its permitted successor or assignee) is the registered holder of any Securities
of such series, such additional amounts as may be necessary in order that the
amount of Distributions (including any Additional Amounts (as defined in such
Trust Agreement)) then due and payable by such FBS Trust on the related Capital
Securities and Common Securities that at any time remain outstanding in
accordance with the terms thereof shall not be reduced as a result of any
Additional Taxes (the "Additional Sums"). Whenever in this Indenture or the
Securities there is a reference in any context to the payment of principal of or
interest on the Securities, such mention shall be deemed to include mention of
the payments of the Additional Sums provided for in this paragraph to the extent
that, in such context, Additional Sums are, were or would be payable in respect
thereof pursuant to the provisions of this paragraph and express mention of the
payment of Additional Sums (if applicable) in any provisions hereof shall not be
construed as excluding Additional Sums in those provisions hereof where such
express mention is not made; provided, however, that the deferral of the payment
of interest pursuant to Section 3.11 or the Securities shall not defer the
payment of any Additional Sums that may be due and payable.

Section 10.7.  Additional Covenants.

     The Company covenants and agrees with each Holder of Securities of any
series that it shall not, and it shall not permit any Subsidiary of the Company
to, (a) declare or pay any dividends or distributions on, or redeem purchase,
acquire or make a liquidation payment with respect to, any shares of the
Company's capital stock (which includes common and preferred stock), or (b) make
any payment of principal of or interest or premium, if any, on or repay,
repurchase or redeem any debt securities of the Company (including Securities
other than the Securities of such series) that rank pari passu with or junior in
interest to the Securities of such series or make any guarantee payments with
respect to any guarantee by the Company of debt securities of any subsidiary of
the Company (including FBS Guarantees other than the FBS Guarantee related to
the Capital Securities issued by the FBS Trust holding Securities of such
series) if such guarantee ranks pari passu with or junior in interest to the
Securities (other than (a) dividends or distributions in Common Stock of the
Company, (b) any declaration of a dividend in connection with the implementation
of a rights plan or the issuance of stock under any such plan or the redemption
or repurchase of any such rights pursuant thereto, (c) payments under the FBS
Guarantee related to the Capital Securities issued by the FBS Trust holding
Securities of such series, and (d) purchases of Common Stock related to the
issuance of Common Stock or rights under any of the Company's benefit plans for
its directors, officers or employees) if at such time (i) there shall have
occurred any event of which the Company has actual knowledge that (A) with the
giving of notice or the lapse of time or both, would constitute an Event of
Default with respect to the Securities of such series and (B) in respect of
which the 

                                      -68-
<PAGE>
 
Company shall not have taken reasonable steps to cure, (ii) if the Securities of
such series are held by an FBS Trust, the Company shall be in default with
respect to its payment of any obligations under the FBS Guarantee relating to
the Capital Securities issued by such FBS Trust or (iii) the Company shall have
given notice of its election to begin an Extension Period with respect to the
Securities of such series as provided herein and shall not have rescinded such
notice, or such Extension Period, or any extension thereof, shall be continuing.

     The Company also covenants with each Holder of Securities of a series
issued to an FBS Trust (i) to maintain directly or indirectly 100% ownership of
the Common Securities of such FBS Trust; provided, however, that any permitted
successor of the Company hereunder may succeed to the Company's ownership of
such Common Securities, (ii) not to voluntarily terminate, wind-up or liquidate
such FBS Trust, except (a) in connection with a distribution of the Securities
of such series to the holders of Trust Securities in liquidation of such FBS
Trust or (b) in connection with certain mergers, consolidations or amalgamations
permitted by the related Trust Agreement and (iii) to use its reasonable
efforts, consistent with the terms and provisions of such Trust Agreement, to
cause such FBS Trust to remain classified as a grantor trust and not an
association taxable as a corporation for United States federal income tax
purposes.

                                  ARTICLE XI

                           REDEMPTION OF SECURITIES

Section 11.1.  Applicability of This Article.

     Redemption of Securities of any series (whether by operation of a sinking
fund or otherwise) as permitted or required by any form of Security issued
pursuant to this Indenture shall be made in accordance with such form of
Security and this Article; provided, however, that if any provision of any such
form of Security shall conflict with any provision of this Article, the
provision of such form of Security shall govern.  Except as otherwise set forth
in the form of Security for such series, each Security of such series shall be
subject to partial redemption only in the amount of $100,000 or, in the case of
the Securities of a series issued to an FBS Trust, $100,000, or integral
multiples of $1,000 in excess thereof.

Section 11.2.  Election to Redeem; Notice to Trustee.

     The election of the Company to redeem any Securities shall be evidenced by
or pursuant to a Board Resolution.  In case of any redemption at the election of
the Company of less than all of the Securities of any particular series and
having the same terms, the Company shall, not less than 30 nor more than 60 days
prior to the Redemption Date (unless a shorter notice shall be satisfactory to
the Trustee), notify 

                                      -69-
<PAGE>
 
the Trustee of such date and of the principal amount of Securities of that
series to be redeemed. In the case of any redemption of Securities prior to the
expiration of any restriction on such redemption provided in the terms of such
Securities, the Company shall furnish the Trustee with an Officers' Certificate
and an Opinion of Counsel evidencing compliance with such restriction.

Section 11.3.  Selection of Securities to be Redeemed.

     If less than all the Securities of any series are to be redeemed (unless
all the Securities of such series and of a specified tenor are to be redeemed or
unless such redemption affects only a single Security), the particular
Securities to be redeemed shall be selected not more than 60 days prior to the
Redemption Date by the Trustee, from the Outstanding Securities of such series
not previously called for redemption, by such method as the Trustee shall deem
fair and appropriate and which may provide for the selection for redemption of a
portion of the principal amount of any Security of such series, provided that
the portion of the principal amount of any Security not redeemed shall be in an
authorized denomination (which shall not be less than the minimum authorized
denomination) for such Security.  If less than all the Securities of such series
and of a specified tenor are to be redeemed (unless such redemption affects only
a single Security), the particular Securities to be redeemed shall be selected
not more than 60 days prior to the Redemption Date by the Trustee, from the
Outstanding Securities of such series and specified tenor not previously called
for redemption in accordance with the preceding sentence.

     The Trustee shall promptly notify the Company in writing of the Securities
selected for partial redemption and the principal amount thereof to be redeemed.
For all purposes of this Indenture, unless the context otherwise requires, all
provisions relating to the redemption of Securities shall relate, in the case of
any Security redeemed or to be redeemed only in part, to the portion of the
principal amount of such Security which has been or is to be redeemed.  If the
Company shall so direct, Securities registered in the name of the Company, any
Affiliate or any Subsidiary thereof shall not be included in the Securities
selected for redemption.

Section 11.4.  Notice of Redemption.

     Notice of redemption shall be given by first-class mail, postage prepaid,
mailed not later than the thirtieth day, and not earlier than the sixtieth day,
prior to the Redemption Date, to each Holder of Securities to be redeemed, at
the address of such Holder as it appears in the Securities Register.

     With respect to Securities of each series to be redeemed, each notice of
redemption shall state:

     (a) the Redemption Date;

                                      -70-
<PAGE>
 
     (b) the Redemption Price;

     (c) if less than all Outstanding Securities of such particular series and
having the same terms are to be redeemed, the identification (and, in the case
of partial redemption, the respective principal amounts) of the particular
Securities to be redeemed;

     (d) that on the Redemption Date, the Redemption Price will become due and
payable upon each such Security or portion thereof, and that interest thereon,
if any, shall cease to accrue on and after said date;

     (e) the place or places where such Securities are to be surrendered for
payment of the Redemption Price; and

     (f) that the redemption is for a sinking fund, if such is the case.

     Notice of redemption of Securities to be redeemed at the election of the
Company shall be given by the Company or, at the Company's request, by the
Trustee in the name and at the expense of the Company and shall not be
irrevocable.  The notice if mailed in the manner herein provided shall be
conclusively presumed to have been duly given, whether or not the Holder
receives such notice.  In any case, a failure to give such notice by mail or any
defect in the notice to the Holder of any Security designated for redemption as
a whole or in part shall not affect the validity of the proceedings for the
redemption of any other Security.

Section 11.5.  Deposit of Redemption Price.

     Prior to 10:00 a.m. New York City time on the Redemption Date specified in
the notice of redemption given as provided in Section 11.4, the Company will
deposit with the Trustee or with one or more Paying Agents (or if the Company is
acting as its own Paying Agent, the Company will segregate and hold in trust as
provided in Section 10.3) an amount of money sufficient to pay the Redemption
Price of, and any accrued interest (including Additional Interest) on, all the
Securities which are to be redeemed on that date.

Section 11.6.  Payment of Securities Called for Redemption.

     If any notice of redemption has been given as provided in Section 11.4, the
Securities or portion of Securities with respect to which such notice has been
given shall become due and payable on the date and at the place or places stated
in such notice at the applicable Redemption Price. On presentation and surrender
of such Securities at a Place of Payment in said notice specified, the said
securities or the 

                                      -71-
<PAGE>
 
specified portions thereof shall be paid and redeemed by the Company at the
applicable Redemption Price, together with accrued interest (including any
Additional Interest) to the Redemption Date; provided, however, that, unless
otherwise specified as contemplated by Section 3.1, installments of interest
whose Stated Maturity is on or prior to the Redemption Date will be payable to
the Holders of such Securities, or one or more Predecessor Securities,
registered as such at the close of business on the relevant Record Dates
according to their terms and the provisions of Section 3.7.

     Upon presentation of any Security redeemed in part only, the Company shall
execute and the Trustee shall authenticate and deliver to the Holder thereof, at
the expense of the Company, a new Security or Securities of the same series, of
authorized denominations, in aggregate principal amount equal to the portion of
the Security not redeemed so presented and having the same Original Issue Date,
Stated Maturity and terms.  If a Global Security is so surrendered, such new
Security will also be a new Global Security.

     If any Security called for redemption shall not be so paid upon surrender
thereof for redemption, the principal of and premium, if any, on such Security
shall, until paid, bear interest from the Redemption Date at the rate prescribed
therefor in the Security.

Section 11.7.  Right of Redemption of Securities Initially Issued to an FBS
Trust.

     In the case of the Securities of a series initially issued to an FBS Trust,
except as otherwise specified as contemplated by Section 3.1, the Company, at
its option, may redeem such Securities (i) on or after the date five years after
the Original Issue Date of such Securities, in whole at any time or in part from
time to time, or (ii) upon the occurrence and during the continuation of a Tax
Event, at any time within 90 days following the occurrence of such Tax Event in
respect of such FBS Trust, in whole (but not in part), in each case at a
Redemption Price equal to 100% of the principal amount thereof.

                                  ARTICLE XII

                                 SINKING FUNDS

Section 12.1.  Applicability of Article.

     The provisions of this Article shall be applicable to any sinking fund for
the retirement of Securities of any series except as otherwise specified as
contemplated by Section 3.1 for such Securities.

                                      -72-
<PAGE>
 
     The minimum amount of any sinking fund payment provided for by the terms of
any Securities of any series is herein referred to as a "mandatory sinking fund
payment", and any sinking fund payment in excess of such minimum amount which is
permitted to be made by the terms of such Securities of any series is herein
referred to as an "optional sinking fund payment".  If provided for by the terms
of any Securities of any series, the cash amount of any sinking fund payment may
be subject to reduction as provided in Section 12.2.  Each sinking fund payment
shall be applied to the redemption of Securities of any series as provided for
by the terms of such Securities.

Section 12.2.  Satisfaction of Sinking Fund Payments with Securities.

     In lieu of making all or any part of a mandatory sinking fund payment with
respect to any Securities of a series in cash, the Company may at its option, at
any time no more than 16 months and no less than 30 days prior to the date on
which such sinking fund payment is due, deliver to the Trustee Securities of
such series (together with the unmatured coupons, if any, appertaining thereto)
theretofore purchased or otherwise acquired by the Company, except Securities of
such series that have been redeemed through the application of mandatory or
optional sinking fund payments pursuant to the terms of the Securities of such
series, accompanied by a Company Order instructing the Trustee to credit such
obligations and stating that the Securities of such series were originally
issued by the Company by way of bona fide sale or other negotiation for value;
provided that the Securities to be so credited have not been previously so
credited.  The Securities to be so credited shall be received and credited for
such purpose by the Trustee at the redemption price for such Securities, as
specified in the Securities so to be redeemed, for redemption through operation
of the sinking fund and the amount of such sinking fund payment shall be reduced
accordingly.

Section 12.3.  Redemption of Securities for Sinking Fund.

     Not less than 60 days prior to each sinking fund payment date for any
series of Securities, the Company will deliver to the Trustee an Officers'
Certificate specifying the amount of the next ensuing sinking fund payment for
such Securities pursuant to the terms of such Securities, the portion thereof,
if any, which is to be satisfied by payment of cash in the currency in which the
Securities of such series are payable (except as provided pursuant to Section
3.1) and the portion thereof, if any, which is to be satisfied by delivering and
crediting Securities pursuant to Section 12.2 and will also deliver to the
Trustee any Securities to be so delivered.  Such Officers' Certificate shall be
irrevocable and upon its delivery the Company shall be obligated to make the
cash payment or payments therein referred to, if any, on or before the
succeeding sinking fund payment date.  In the case of the failure of the Company
to deliver such Officers' Certificate (or, as required by this Indenture, the
Securities and coupons, if any, specified in such Officers' Certificate), the
sinking fund payment due 

                                      -73-
<PAGE>
 
on the succeeding sinking fund payment date for such series shall be paid
entirely in cash and shall be sufficient to redeem the principal amount of the
Securities of such series subject to a mandatory sinking fund payment without
the right to deliver or credit securities as provided in Section 12.2 and
without the right to make the optional sinking fund payment with respect to such
series at such time.

     Any sinking fund payment or payments (mandatory or optional) made in cash
plus any unused balance of any preceding sinking fund payments made with respect
to the Securities of any particular series shall be applied by the Trustee (or
by the Company if the Company is acting as its own Paying Agent) on the sinking
fund payment date on which such payment is made (or, if such payment is made
before a sinking fund payment date, on the sinking fund payment date immediately
following the date of such payment) to the redemption of Securities of such
series at the Redemption Price specified in such Securities with respect to the
sinking fund.  Any sinking fund moneys not so applied or allocated by the
Trustee (or, if the Company is acting as its own Paying Agent, segregated and
held in trust by the Company as provided in Section 10.3) for such series and
together with such payment (or such amount so segregated) shall be applied in
accordance with the provisions of this Section 12.3.  Any and all sinking fund
moneys with respect to the Securities of any particular series held by the
Trustee (or if the Company is acting as its own Paying Agent, segregated and
held in trust as provided in Section 10.3) on the last sinking fund payment date
with respect to Securities of such series and not held for the payment or
redemption of particular Securities of such series shall be applied by the
Trustee (or by the Company if the Company is acting as its own Paying Agent),
together with other moneys, if necessary, to be deposited (or segregated)
sufficient for the purpose, to the payment of the principal of the Securities of
such series at Maturity.  The Trustee shall select the Securities to be redeemed
upon such sinking fund payment date in the manner specified in Section 11.3 and
cause notice of the redemption thereof to be given in the name of and at the
expense of the Company in the manner provided in Section 11.4.  Such notice
having been duly given, the redemption of such Securities shall be made upon the
terms and in the manner stated in Section 11.6.  On or before each sinking fund
payment date, the Company shall pay to the Trustee (or, if the Company is acting
as its own Paying Agent, the Company shall segregate and hold in trust as
provided in Section 10.3) in cash a sum in the currency in which Securities of
such series are payable (except as provided pursuant to Section 3.1) equal to
the principal and any interest accrued to the Redemption Date for Securities or
portions thereof to be redeemed on such sinking fund payment date pursuant to
this Section 12.3.

     Neither the Trustee nor the Company shall redeem any Securities of a series
with sinking fund moneys or mail any notice of redemption of Securities of such
series by operation of the sinking fund for such series during the continuance
of a default in payment of interest, if any, on any Securities of such series or
of any Event of Default (other than an Event of Default occurring as a
consequence of this 

                                      -74-
<PAGE>
 
paragraph) with respect to the Securities of such series, except that if the
notice of redemption shall have been provided in accordance with the provisions
hereof, the Trustee (or the Company, if the Company is then acting as its own
Paying Agent) shall redeem such Securities if cash sufficient for that purpose
shall be deposited with the Trustee (or segregated by the Company) for that
purpose in accordance with the terms of this Article XII. Except as aforesaid,
any moneys in the sinking fund for such series at the time when any such default
or Event of Default shall occur and any moneys thereafter paid into such sinking
fund shall, during the continuance of such default or Event of Default, be held
as security for the payment of the Securities and coupons, if any, of such
series; provided, however, that in case such default or Event of Default shall
have been cured or waived herein, such moneys shall thereafter be applied on the
next sinking fund payment date for the Securities of such series on which such
moneys may be applied pursuant to the provisions of this Section 12.3.

                  ARTICLE XIII.  SUBORDINATION OF SECURITIES

Section 13.1.  Securities Subordinate to Senior and Subordinated Debt.

     The Company covenants and agrees, and each Holder of a Security, by its
acceptance thereof, likewise covenants and agrees, that, to the extent and in
the manner hereinafter set forth in this Article XIII, the payment of the
principal of (and premium, if any) and interest (including any Additional
Interest) on each and all of the Securities are hereby expressly made
subordinate and subject in right of payment to the prior payment in full of all
amounts then due and payable in respect of all Senior and Subordinated Debt.

Section 13.2.  Payment Over of Proceeds Upon Dissolution, Etc.

     In case of the pendency of any receivership, insolvency, liquidation,
bankruptcy, reorganization, arrangement, adjustment, composition or other
judicial proceeding relative to the Company (each such event, if any, herein
sometimes referred to as a "Proceeding"), then the holders of Senior and
Subordinated Debt shall be entitled to receive payment in full of Allocable
Amounts of such Senior and Subordinated Debt, or provision shall be made for
such payment in cash or cash equivalents or otherwise in a manner satisfactory
to the holders of Senior and Subordinated Debt, before the Holders of the
Securities are entitled to receive or retain any payment or distribution of any
kind or character, whether in cash, property or securities (including any
payment or distribution which may be payable or deliverable by reason of the
payment of any other Debt of the Company subordinated to the payment of the
Securities, such payment or distribution being hereinafter referred to as a
"Junior Subordinated Payment"), on account of principal of (or premium, if any)
or interest (including any Additional Interest) on the Securities or on account
of the purchase or other acquisition of Securities by the 

                                      -75-
<PAGE>
 
Company or any Subsidiary and to that end the holders of Senior and Subordinated
Debt shall be entitled to receive, for application to the payment thereof, any
payment or distribution of any kind or character, whether in cash, property or
securities, including any Junior Subordinated Payment, which may be payable or
deliverable in respect of the Securities in any such Proceeding.

     In the event that, notwithstanding the foregoing provisions of this Section
13.2, the Trustee or the Holder of any Security shall have received any payment
or distribution of assets of the Company of any kind or character, whether in
cash, property or securities, including any Junior Subordinated Payment, before
all Allocable Amounts of all Senior and Subordinated Debt are paid in full or
payment thereof is provided for in cash or cash equivalents or otherwise in a
manner satisfactory to the holders of Senior and Subordinated Debt, and if such
fact shall, at or prior to the time of such payment or distribution, have been
made known to the Trustee or, as the case may be, such Holder, then and in such
event such payment or distribution shall be paid over or delivered forthwith to
the trustee in bankruptcy, receiver, liquidating trustee, custodian, assignee,
agent or other Person making payment or distribution of assets of the Company
for application to the payment of all Allocable Amounts of all Senior and
Subordinated Debt remaining unpaid, to the extent necessary to pay all Allocable
Amounts of all Senior and Subordinated Debt in full, after giving effect to any
concurrent payment or distribution to or for the holders of Senior and
Subordinated Debt.

     For purposes of this Article XIII only, the words "any payment or
distribution of any kind or character, whether in cash, property or securities"
shall not be deemed to include shares of stock of the Company as reorganized or
readjusted, or securities of the Company or any other corporation provided for
by a plan of reorganization or readjustment which securities are subordinated in
right of payment to all then outstanding Senior and Subordinated Debt to
substantially the same extent as the Securities are so subordinated as provided
in this Article XIII.  The consolidation of the Company with, or the merger of
the Company into, another Person or the liquidation or dissolution of the
Company following the sale of all or substantially all of its properties and
assets as an entirety to another Person upon the terms and conditions set forth
in Article VIII shall not be deemed a Proceeding for the purposes of this
Section 13.2 if the Person formed by such consolidation or into which the
Company is merged or the Person which acquires by sale such properties and
assets as an entirety, as the case may be, shall, as a part of such
consolidation, merger, or sale comply with the conditions set forth in Article
VIII.

Section 13.3.  Prior Payment to Senior and Subordinated Debt Upon Acceleration
of Securities.

                                      -76-
<PAGE>
 
     In the event that any Securities are declared due and payable before their
Stated Maturity, then and in such event the holders of the Senior and
Subordinated Debt outstanding at the time such Securities so become due and
payable shall be entitled to receive payment in full of all Allocable Amounts
due on or in respect of such Senior and Subordinated Debt (including any amounts
due upon acceleration), or provision shall be made for such payment in cash or
cash equivalents or otherwise in a manner satisfactory to the holders of Senior
and Subordinated Debt, before the Holders of the Securities are entitled to
receive any payment or distribution of any kind or character, whether in cash,
properties or securities (including any Junior Subordinated Payment) by the
Company on account of the principal of (or premium, if any) or interest
(including any Additional Interest) on the Securities or on account of the
purchase or other acquisition of Securities by the Company or any Subsidiary;
provided, however, that nothing in this Section 13.3 shall prevent the
satisfaction of any sinking fund payment in accordance with this Indenture or as
otherwise specified as contemplated by Section 3.1 for the Securities of any
series by delivering and crediting pursuant to Section 12.2 or as otherwise
specified as contemplated by Section 3.1 for the Securities of any series
Securities which have been acquired (upon redemption or otherwise) prior to such
declaration of acceleration.

     In the event that, notwithstanding the foregoing, the Company shall make
any payment to the Trustee or the Holder of any Security prohibited by the
foregoing provisions of this Section 13.3, and if such fact shall, at or prior
to the time of such payment, have been made known to the Trustee or, as the case
may be, such Holder, then and in such event such payment shall be paid over and
delivered forthwith to the Company.

     The provisions of this Section 13.3 shall not apply to any payment with
respect to which Section 13.2 would be applicable.

Section 13.4.  No Payment When Senior and Subordinated Debt in Default.

     (a) In the event and during the continuation of any default in the payment
of principal of (or premium, if any) or interest on any Senior and Subordinated
Debt, or in the event that any event of default with respect to any Senior and
Subordinated Debt shall have occurred and be continuing and shall have resulted
in such Senior and Subordinated Debt becoming or being declared due and payable
prior to the date on which it would otherwise have become due and payable,
unless and until such event of default shall have been cured or waived or shall
have ceased to exist and such acceleration shall have been rescinded or
annulled, or (b) in the event any judicial proceeding shall be pending with
respect to any such default in payment or such event or default, then no payment
or distribution of any kind or character, whether in cash, properties or
securities (including any Junior Subordinated Payment) shall be made by the
Company on account of principal of (or 

                                      -77-
<PAGE>
 
premium, if any) or interest (including any Additional Interest), if any, on the
Securities or on account of the purchase or other acquisition of Securities by
the Company or any Subsidiary, in each case unless and until all Allocable
Amounts of such Senior and Subordinated Debt are paid in full; provided,
however, that nothing in this Section 13.4 shall prevent the satisfaction of any
sinking fund payment in accordance with this Indenture or as otherwise specified
as contemplated by Section 3.1 for the Securities of any series by delivering
and crediting pursuant to Section 12.2 or as otherwise specified as contemplated
by Section 3.1 for the Securities of any series Securities which have been
acquired (upon redemption or otherwise) prior to such default in payment or
event of default.

     In the event that, notwithstanding the foregoing, the Company shall make
any payment to the Trustee or the Holder of any Security prohibited by the
foregoing provisions of this Section 13.4, and if such fact shall, at or prior
to the time of such payment, have been made known to the Trustee or, as the case
may be, such Holder, then and in such event such payment shall be paid over and
delivered forthwith to the Company.

     The provisions of this Section 13.4 shall not apply to any payment with
respect to which Section 13.2 would be applicable.

Section 13.5.  Payment Permitted If No Default.

     Nothing contained in this Article XIII or elsewhere in this Indenture or in
any of the Securities shall prevent (a) the Company, at any time except during
the pendency of any Proceeding referred to in Section 13.2 or under the
conditions described in Sections 13.3 and 13.4, from making payments at any time
of principal of (and premium, if any) or interest (including Additional
Interest) on the Securities, or (b) the application by the Trustee of any money
deposited with it hereunder to the payment of or on account of the principal of
(and premium, if any) or interest (including any Additional Interest) on the
Securities or the retention of such payment by the Holders, if, at the time of
such application by the Trustee, it did not have knowledge that such payment
would have been prohibited by the provisions of this Article XIII.

Section 13.6.  Subrogation to Rights of Holders of Senior and Subordinated Debt.

     Subject to the payment in full of all amounts due or to become due on all
Senior and Subordinated Debt, or the provision for such payment in cash or cash
equivalents or otherwise in a manner satisfactory to the holders of Senior and
Subordinated Debt, the Holders of the Securities shall be subrogated to the
extent of the payments or distributions made to the holders of such Senior and
Subordinated Debt pursuant to the provisions of this Article XIII (equally and
ratably with the 

                                      -78-
<PAGE>
 
holders of all indebtedness of the Company which by its express terms is
subordinated to Senior and Subordinated Debt of the Company to substantially the
same extent as the Securities are subordinated to the Senior and Subordinated
Debt and is entitled to like rights of subrogation by reason of any payments or
distributions made to holders of such Senior and Subordinated Debt) to the
rights of the holders of such Senior and Subordinated Debt to receive payments
and distributions of cash, property and securities applicable to the Senior and
Subordinated Debt until the principal of (and premium, if any) and interest on
the Securities shall be paid in full. For purposes of such subrogation, no
payments or distributions to the holders of the Senior and Subordinated Debt of
any cash, property or securities to which the Holders of the Securities or the
Trustee would be entitled except for the provisions of this Article, and no
payments over pursuant to the provisions of this Article XIII to the holders of
Senior and Subordinated Debt by Holders of the Securities or the Trustee, shall,
as among the Company, its creditors other than holders of Senior and
Subordinated Debt, and the Holders of the Securities, be deemed to be a payment
or distribution by the Company to or on account of the Senior and Subordinated
Debt.

Section 13.7.  Provisions Solely to Define Relative Rights.

     The provisions of this Article XIII are and are intended solely for the
purpose of defining the relative rights of the Holders of the Securities on the
one hand and the holders of Senior and Subordinated Debt on the other hand.
Nothing contained in this Article XIII or elsewhere in this Indenture or in the
Securities is intended to or shall (a) impair, as between the Company and the
Holders of the Securities, the obligations of the Company, which are absolute
and unconditional, to pay to the Holders of the Securities the principal of (and
premium, if any) and interest (including any Additional Interest) on the
Securities as and when the same shall become due and payable in accordance with
their terms; or (b) affect the relative rights against the Company of the
Holders of the Securities and creditors of the Company other than their rights
in relation to the holders of Senior and Subordinated Debt; or (c) prevent the
Trustee or the Holder of any Security from exercising all remedies otherwise
permitted by applicable law upon default under this Indenture including, without
limitation, filing and voting claims in any Proceeding, subject to the rights,
if any, under this Article XIII of the holders of Senior and Subordinated Debt
to receive cash, property and securities otherwise payable or deliverable to the
Trustee or such Holder.

Section 13.8.  Trustee to Effectuate Subordination.

     Each Holder of a Security by his or her acceptance thereof authorizes and
directs the Trustee on his or her behalf to take such action as may be necessary
or appropriate to acknowledge or effectuate the subordination provided in this
Article 

                                      -79-
<PAGE>
 
XIII and appoints the Trustee his or her attorney-in-fact for any and all such
purposes.

Section 13.9.  No Waiver of Subordination Provisions.

     No right of any present or future holder of any Senior and Subordinated
Debt to enforce subordination as herein provided shall at any time in any way be
prejudiced or impaired by any act or failure to act on the part of the Company
or by any act or failure to act, in good faith, by any such holder, or by any
noncompliance by the Company with the terms, provisions and covenants of this
Indenture, regardless of any knowledge thereof that any such holder may have or
be otherwise charged with.

     Without in any way limiting the generality of the immediately preceding
paragraph, the holders of Senior and Subordinated Debt may, at any time and from
to time, without the consent of or notice to the Trustee or the Holders of the
Securities, without incurring responsibility to the Holders of the Securities
and without impairing or releasing the subordination provided in this Article or
the obligations hereunder of the Holders of the Securities to the holders of
Senior and Subordinated Debt, do any one or more of the following:  (i) change
the manner, place or terms of payment or extend the time of payment of, or renew
or alter, Senior and Subordinated Debt, or otherwise amend or supplement in any
manner Senior and Subordinated Debt or any instrument evidencing the same or any
agreement under which Senior and Subordinated Debt is outstanding; (ii) sell,
exchange, release or otherwise deal with any property pledged, mortgaged or
otherwise securing Senior and Subordinated Debt; (iii) release any Person liable
in any manner for the collection of Senior and Subordinated Debt; and
(iv) exercise or refrain from exercising any rights against the Company and any
other Person.

Section 13.10.  Notice to Trustee.

     The Company shall give prompt written notice to the Trustee of any fact
known to the Company which would prohibit the making of any payment to or by the
Trustee in respect of the Securities.  Notwithstanding the provisions of this
Article XIII or any other provision of this Indenture, the Trustee shall not be
charged with knowledge of the existence of any facts which would prohibit the
making of any payment to or by the Trustee in respect of the Securities, unless
and until the Trustee shall have received written notice thereof from the
Company or a holder of Senior and Subordinated Debt or from any trustee, agent
or representative therefor; provided, however, that if the Trustee shall not
have received the notice provided for in this Section 13.10 at least two
Business Days prior to the date upon which by the terms hereof any monies may
become payable for any purpose 

                                      -80-
<PAGE>
 
(including, without limitation, the payment of the principal of (and premium, if
any) or interest (including any Additional Interest) on any Security), then,
anything herein contained to the contrary notwithstanding, the Trustee shall
have full power and authority to receive such monies and to apply the same to
the purpose for which they were received and shall not be affected by any notice
to the contrary which may be received by it within two Business Days prior to
such date.

     Subject to the provisions of Section 6.1, the Trustee shall be entitled to
rely on the delivery to it of a written notice by a Person representing himself
to be a holder of Senior and Subordinated Debt (or a trustee therefor) to
establish that such notice has been given by a holder of Senior and Subordinated
Debt (or a trustee therefor). In the event that the Trustee determines in good
faith that further evidence is required with respect to the right of any Person
as a holder of Senior and Subordinated Debt to participate in any payment or
distribution pursuant to this Article, the Trustee may request such Person to
furnish evidence to the reasonable satisfaction of the Trustee as to the amount
of Senior and Subordinated Debt held by such Person, the extent to which such
Person is entitled to participate in such payment or distribution and any other
facts pertinent to the rights of such Person under this Article, and if such
evidence is not furnished, the Trustee may defer any payment to such Person
pending judicial determination as to the right of such Person to receive such
payment.

Section 13.11.  Reliance on Judicial Order or Certificate of Liquidating Agent.

     Upon any payment or distribution of assets of the Company referred to in
this Article XIII, the Trustee, subject to the provisions of Section 6.1, and
the Holders of the Securities shall be entitled to rely upon any order or decree
entered by any court of competent jurisdiction in which such Proceeding is
pending, or a certificate of the trustee in bankruptcy, receiver, liquidating
trustee, custodian, assignee for the benefit of creditors, agent or other Person
making such payment or distribution, delivered to the Trustee or to the Holders
of Securities, for the purpose of ascertaining the Persons entitled to
participate in such payment or distribution, the holders of the Senior and
Subordinated Debt and other indebtedness of the Company, the amount thereof or
payable thereon, the amount or amounts paid or distributed thereon and all other
facts pertinent thereto or to this Article XIII.

Section 13.12.  Trustee Not Fiduciary for Holders of Senior and Subordinated
Debt.

     The Trustee, in its capacity as trustee under this Indenture, shall not be
deemed to owe any fiduciary duty to the holders of Senior and Subordinated Debt
and shall not be liable to any such holders if it shall in good faith mistakenly
pay over or distribute to Holders of Securities or to the Company or to any
other Person cash, property or securities to which any holders of Senior and
Subordinated Debt shall be entitled by virtue of this Article or otherwise.

                                      -81-
<PAGE>
 
Section 13.13.  Rights of Trustee as Holder of Senior and Subordinated Debt;
Preservation of Trustee's Rights.

     The Trustee in its individual capacity shall be entitled to all the rights
set forth in this Article XIII with respect to any Senior and Subordinated Debt
which may at any time be held by it, to the same extent as any other holder of
Senior and Subordinated Debt, and nothing in this Indenture shall deprive the
Trustee of any of its rights as such holder.

Section 13.14.  Article Applicable to Paying Agents.

     In case at any time any Paying Agent other than the Trustee shall have been
appointed by the Company and be then acting hereunder, the term "Trustee" as
used in this Article XIII shall in such case (unless the context otherwise
requires) be construed as extending to and including such Paying Agent within
its meaning as fully for all intents and purposes as if such Paying Agent were
named in this Article XIII in addition to or in place of the Trustee.

Section 13.15.  Certain Conversions or Exchanges Deemed Payment.

     For the purposes of this Article XIII only, (a) the issuance and delivery
of junior securities upon conversion or exchange of Securities shall not be
deemed to constitute a payment or distribution on account of the principal of
(or premium, if any) or interest (including any Additional Interest) on
Securities or on account of the purchase or other acquisition of Securities, and
(b) the payment, issuance or delivery of cash, property or securities (other
than junior securities) upon conversion or exchange of a Security shall be
deemed to constitute payment on account of the principal of such security.  For
the purposes of this Section 13.15, the term "junior securities" means (i)
shares of any stock of any class of the Company and (ii) securities of the
Company which are subordinated in right of payment to all Senior and
Subordinated Debt which may be outstanding at the time of issuance or delivery
of such securities to substantially the same extent as, or to a greater extent
than, the Securities are so subordinated as provided in this Article XIII.

                                    * * * *

     This instrument may be executed in any number of counterparts, each of
which so executed shall be deemed to be an original, but all such counterparts
shall together constitute but one and the same instrument.

                                      -82-
<PAGE>
 
     IN WITNESS WHEREOF, the parties hereto have caused this Indenture to be
duly executed, and their respective corporate seals to be hereunto affixed and
attested, all as of the day and year first above written.

                                    FIRST BANK SYSTEM, INC.

                                    By: /s/ David P. Grandstrand
                                        -------------------------------------
                                    Its: Senior Vice President and Treasurer
                                         ------------------------------------

Attest:

By  /s/ James L. Chosy
    --------------------------
Its Assistant Secretary
    --------------------------


                                    WILMINGTON TRUST COMPANY,
                                    as Trustee

                                    By: /s/ Norma P. Closs
                                       -------------------------------------
                                    Its: Vice President
                                        ------------------------------------
Attest:

By /s/ David Vanaskey
    --------------------------
Its Assistant Secretary
    --------------------------

                                     -83-

<PAGE>
 
                                                                     Exhibit 4.2

                             CERTIFICATE OF TRUST

                                      OF

                                 FBS CAPITAL I

     THIS CERTIFICATE OF TRUST of FBS CAPITAL I (the "Trust"), dated as of
October 31, 1996, is being duly executed and filed by the undersigned, as
trustees, to form a business trust under the Delaware Business Trust Act (12
Del. C. ((S)) 3801 et seq.).

     1. Name. The name of the business trust being formed hereby is FBS Capital
I.

     2. Delaware Trustee. The name and business address of the trustee of the
Trust with a principal place of business in the State of Delaware are Wilmington
Trust Company, Rodney Square North, 1100 North Market, Wilmington, Delaware
19890-0001, Attention: Corporate Trust Administration.

     3. Effective Date. This Certificate of Trust shall be effective upon
filing.

  IN WITNESS WHEREOF, the undersigned, being the trustees of the Trust, have
executed this Certificate of Trust as of the date first above written.

                              WILMINGTON TRUST COMPANY
                                not in its individual capacity but solely
                                as Trustee



                              By: /s/ Norma P. Closs
                                  ------------------------------------      
                                  Name:  Norma P. Closs
                                  Title: Vice President

                               /s/ David J. Parrin
                              ----------------------------------------
                              DAVID J. PARRIN, not in his individual     
                                capacity but solely as Administrative Trustee

                               /s/ Susan E. Lester
                              ----------------------------------------
                              SUSAN E. LESTER, not in her individual     
                                capacity but solely as Administrative Trustee

                               /s/ Lee R. Mitau
                              ----------------------------------------
                              LEE R. MITAU, not in his individual
                                capacity but solely as Administrative
                                Trustee

<PAGE>
 
                                                                     Exhibit 4.3

                              TRUST AGREEMENT OF
                                 FBS CAPITAL I


          This TRUST AGREEMENT of FBS CAPITAL I (the "Trust"), dated as of
October 31, 1996, among (i) First Bank System, Inc.,  a Delaware corporation
(the "Depositor"), (ii) Wilmington Trust Company, a Delaware banking
corporation, not in its individual capacity but solely as trustee of the Trust,
and (iii), Lee R. Mitau, Susan E. Lester and David J. Parrin, each an individual
employed by the Depositor, not in their individual capacities but solely as
administrative trustees of the Trust (each of such trustees in (ii) and (iii) a
"Trustee" and collectively, the "Trustees").  The Depositor and the Trustees
hereby agree as follows:

          1.   The Trust created hereby shall be known as "FBS Capital I", in
which name the Trustees, or the Depositor to the extent provided herein, may
conduct the business of the Trust, make and execute contracts, and sue and be
sued.

          2.   The Depositor hereby assigns, transfers, conveys and sets over to
the Trustees the sum of $10.  The Trustees hereby acknowledge receipt of such
amount in trust from the Depositor, which amount shall constitute the initial
trust estate.  The Trustees hereby declare that they will hold the trust estate
in trust for the Depositor.  It is the intention of the parties hereto that the
Trust created hereby constitute a business trust under Chapter 38 of Title 12 of
the Delaware Code, 12 Del. C. (S) 3801 et seq. (the "Business Trust Act"), and
that this document constitutes the governing instrument of the Trust.  The
Trustees hereby are authorized and directed to execute and file a certificate of
trust with the Secretary of State of the State of Delaware in accordance with
the provisions of the Business Trust Act.
<PAGE>
 
          3.   The Depositor and the Trustees will enter into an Amended and
Restated Trust Agreement, satisfactory to each such party and substantially in
the form to be included as an exhibit to the 1933 Act Registration Statement
referred to below, to provide for the contemplated operation of the Trust
created hereby and the issuance of the Preferred Securities and Common
Securities referred to therein.  Prior to the execution and delivery of such
Amended and Restated Trust Agreement, the Trustees shall not have any duty or
obligation hereunder or with respect of the trust estate, except as otherwise
required by applicable law or as may be necessary to obtain prior to such
execution and delivery any licenses, consents or approvals required by
applicable law or otherwise.

          4.   The Trustees hereby authorize and direct the Depositor (i) to
file with the Securities and Exchange Commission (the "Commission") and execute,
in each case on behalf of the Trust, (a) a Registration Statement on Form S-3
(the "1933 Act Registration Statement"), including any pre-effective or post-
effective amendments to the 1933 Act Registration Statement, relating to the
registration under the Securities Act of 1933, as amended, of the Preferred
Securities of the Trust and certain other securities and (b) a Registration
Statement on Form 8-A (the "1934 Act Registration Statement") (including all
pre-effective and post-effective amendments thereto) relating to the
registration of the Preferred Securities of the Trust under Section 12(b) of the
Securities Exchange Act of 1934, as amended; (ii) to file with the New York
Stock Exchange (the "Exchange") and execute on behalf of the Trust a listing
application and all other applications, statements, certificates, 

                                      -2-
<PAGE>
 
agreements and other instruments as shall be necessary or desirable to cause the
Preferred Securities to be listed on the Exchange and (iii) to file and execute
on behalf of the Trust such applications, reports, surety bonds, irrevocable
consents, appointments of attorney for service of process and other papers and
documents as shall be necessary or desirable to register the Preferred
Securities under the securities or blue sky laws of such jurisdictions as the
Depositor, on behalf of the Trust, may deem necessary or desirable. In the event
that any filing referred to above is required by the rules and regulations of
the Commission, the Exchange or state securities or blue sky laws, to be
executed on behalf of the Trust by one or more of the Trustees, each of the
Trustees, in its or his capacity as Trustee of the Trust, is hereby authorized
and, to the extent so required, directed to join in any such filing and to
execute on behalf of the Trust any and all of the foregoing, it being understood
that Wilmington Trust Company in its capacity as Trustee of the Trust, shall not
be required to join in any such filing or execute on behalf of the Trust any
such document unless required by the rules and regulations of the Commission,
the Exchange or state securities or blue sky laws. In connection with the
filings referred to above, the Depositor and Lee R. Mitau, Susan E. Lester and
David J. Parrin, each an administrative trustee, solely in their capacities as
Trustees of the Trust, hereby constitutes and appoints Lee R. Mitau, Susan E.
Lester and David J. Parrin, each of them, as its or his or her true and lawful
attorneys-in-fact and agents, with full power of substitution and
resubstitution, for the Depositor or such Trustee or in the Depositor's or such
Trustee's name, place and stead, in any and all capacities, to sign 

                                      -3-
<PAGE>
 
any and all amendments (including post-effective amendments) to any such filings
(including the 1933 Act Registration Statement and the 1934 Act Registration
Statement) and to file the same, with all exhibits thereto and other documents
in connection therewith, with the Commission, the Exchange and administrators of
state securities or blue sky laws, granting unto said attorneys-in-fact and
agents full power and authority to do and perform each and every act and thing
requisite and necessary to be done in connection therewith, as fully to all
intents and purposes as the Depositor or such Trustee might or could do in
person, thereby ratifying and confirming all that said attorneys-in-fact and
agents or any of them, or their respective substitute or substitutes, shall do
or cause to be done by virtue thereof.

          5.   This Trust Agreement may be executed in one or more counterparts.

          6.   The number of Trustees initially shall be four (4) and thereafter
the number of Trustees shall be such number as shall be fixed from time to time
by a written instrument signed by the Depositor which may increase or decrease
the number of Trustees; provided, however, that to the extent required by the
Business Trust Act, one Trustee shall be either a natural person who is a
resident of the State of Delaware, or, if not a natural person, an entity which
has its principal place of business in the State of Delaware and otherwise meets
the requirements of applicable Delaware law.  Subject to the foregoing, the
Depositor is entitled to appoint or remove without cause any Trustee at any
time.  The Trustees may resign upon thirty days prior written notice to
Depositor.

                                      -4-
<PAGE>
 
          7.   This Trust Agreement shall be governed by, and construed in
accordance with, the laws of the State of Delaware (without regard to conflict
of laws principles).

          IN WITNESS THEREOF, the parties hereto have caused this Trust
Agreement to be duly executed as of the day and year first above written.

                                              /s/ David J. Parrin
FIRST BANK SYSTEM, INC.,                     -----------------------------------
     as Depositor                            DAVID J. PARRIN, not in his
                                             individual capacity but solely as
                                               Administrative Trustee
By: /s/ Lee R. Mitau
   ---------------------------------------
Name:  Lee R. Mitau                           /s/ Susan E. Lester
Title: Executive Vice President,             -----------------------------------
       General Counsel and Secretary         SUSAN E. LESTER, not in her
                                             individual capacity but solely as
                                               Administrative Trustee

                                               /s/ Lee R. Mitau
WILMINGTON TRUST COMPANY,                    -----------------------------------
not in its individual capacity but solely    LEE R. MITAU, not in his
as Trustee                                   individual capacity but solely as
                                               Administrative Trustee

By: /s/ Norma P. Closs
   ---------------------------------------
Name:  Norma S. Closs
Title: Vice President

                                      -5-

<PAGE>
 
                                                                     EXHIBIT 4.4


                             AMENDED AND RESTATED


                                TRUST AGREEMENT


                                     AMONG


                    FIRST BANK SYSTEM, INC., AS DEPOSITOR,


                           WILMINGTON TRUST COMPANY,
                             AS PROPERTY TRUSTEE,


                           WILMINGTON TRUST COMPANY,
                             AS DELAWARE TRUSTEE,


                                      AND


                    THE ADMINISTRATIVE AGENTS NAMED HEREIN


                         DATED AS OF NOVEMBER 26, 1996


                                 FBS CAPITAL I
<PAGE>
 
                                 FBS CAPITAL I

             CERTAIN SECTIONS OF THIS TRUST AGREEMENT RELATING TO
                        SECTIONS 310 THROUGH 318 OF THE
                         TRUST INDENTURE ACT OF 1939:

<TABLE>
<CAPTION>
- -------------------------------------------------------------------------------------------------------------- 
                           TRUST INDENTURE                                         TRUST AGREEMENT
                          -----------------                                       -----------------
                            ACT SECTION                                               SECTION
                           -------------                                             ---------
- -------------------------------------------------------------------------------------------------------------- 
<S>                     <C>                                            <C>
      ((S)) 310         (a)(1)    .......                              8.7
- --------------------------------------------------------------------------------------------------------------  
                        (a)(2)    .......                              8.7     
- --------------------------------------------------------------------------------------------------------------   
                        (a)(3)    .......                              8.9               
- --------------------------------------------------------------------------------------------------------------   
                        (a)(4)    .......                              2.7(a)(ii)
- --------------------------------------------------------------------------------------------------------------   
                        (b)   ...........                              8.8     
- --------------------------------------------------------------------------------------------------------------   
((S)) 311               (a)   ...........                              8.13     
- --------------------------------------------------------------------------------------------------------------   
                        (b)   ...........                              8.13 
- --------------------------------------------------------------------------------------------------------------    
((S)) 312               (a)   ...........                              5.7
- --------------------------------------------------------------------------------------------------------------     
                        (b)   ...........                              5.7
- --------------------------------------------------------------------------------------------------------------      
                        (c)   ...........                              5.7     
- --------------------------------------------------------------------------------------------------------------       
((S)) 313               (a)   ...........                              8.14(a)            
- --------------------------------------------------------------------------------------------------------------       
                        (a)(4)    .......                              8.14(b)
- --------------------------------------------------------------------------------------------------------------       
                        (b)   ...........                              8.14(b)
- --------------------------------------------------------------------------------------------------------------        
                        (c)   ...........                              10.8       
- --------------------------------------------------------------------------------------------------------------        
                        (d)   ...........                              8.14(c)
- --------------------------------------------------------------------------------------------------------------        
((S)) 314               (a)   ...........                              8.15
- --------------------------------------------------------------------------------------------------------------         
                        (b)   ...........                              Not Applicable
- --------------------------------------------------------------------------------------------------------------         
                        (c)(1)    .......                              8.16     
- --------------------------------------------------------------------------------------------------------------         
                        (c)(2)    .......                              8.16 
- --------------------------------------------------------------------------------------------------------------         
                        (c)(3)    .......                              Not Applicable
- --------------------------------------------------------------------------------------------------------------          
                        (d)   ...........                              Not Applicable       
- --------------------------------------------------------------------------------------------------------------          
                        (e)   ...........                              1.1, 8.16
- --------------------------------------------------------------------------------------------------------------          
((S)) 315               (a)   ...........                              8.1(a), 8.3(a)
- --------------------------------------------------------------------------------------------------------------           
                        (b)   ...........                              8.2, 10.8
- --------------------------------------------------------------------------------------------------------------            
                        (c)   ...........                              8.1(a)             
- --------------------------------------------------------------------------------------------------------------            
                        (d)   ...........                              8.1, 8.3 
- --------------------------------------------------------------------------------------------------------------            
                        (e)   ...........                              Not Applicable
- --------------------------------------------------------------------------------------------------------------             
((S)) 316               (a)   ...........                              Not Applicable
- --------------------------------------------------------------------------------------------------------------              
                        (a)(1)(A)  ......                              Not Applicable     
- --------------------------------------------------------------------------------------------------------------              
                        (a)(1)(B)                                      Not Applicable 
- --------------------------------------------------------------------------------------------------------------              
                        (a)(2)    .......                              Not Applicable
- --------------------------------------------------------------------------------------------------------------               
                        (b)   ...........                              5.14     
- --------------------------------------------------------------------------------------------------------------               
                        (c)   ...........                              6.7
- --------------------------------------------------------------------------------------------------------------                
((S)) 317               (a)(1)    .......                              Not Applicable
- --------------------------------------------------------------------------------------------------------------                 
                        (a)(2)    .......                              Not Applicable
- --------------------------------------------------------------------------------------------------------------                  
                        (b)   ...........                              5.9     
- --------------------------------------------------------------------------------------------------------------                  
((S)) 318               (a)   ...........                              10.10
- --------------------------------------------------------------------------------------------------------------                  
_________________
</TABLE>

NOTE: THIS RECONCILIATION AND TIE SHEET SHALL NOT, FOR ANY PURPOSE, BE DEEMED TO
BE A PART OF THE TRUST AGREEMENT.
<PAGE>
 
                               TABLE OF CONTENTS

<TABLE>
<S>                                                                                                               <C>  
ARTICLE I
DEFINED TERMS.................................................................................................     6
     SECTION 1.1. DEFINITIONS.................................................................................     6
          ACT.................................................................................................     7
          ADDITIONAL AMOUNT...................................................................................     7
          ADDITIONAL SUMS.....................................................................................     7
          ADMINISTRATIVE AGENT................................................................................     7
          AFFILIATE...........................................................................................     7
          BANK................................................................................................     7
          BANKRUPTCY EVENT....................................................................................     7
          BANKRUPTCY LAWS.....................................................................................     7
          BOARD RESOLUTION....................................................................................     7
          BOOK-ENTRY CAPITAL SECURITIES CERTIFICATES..........................................................     8
          BUSINESS DAY........................................................................................     8
          CAPITAL SECURITIES CERTIFICATE......................................................................     8
          CAPITAL SECURITIES EXCHANGE AND REGISTRATION RIGHTS AGREEMENT.......................................     8
          CAPITAL SECURITY....................................................................................     8
          CERTIFICATE DEPOSITORY AGREEMENT....................................................................     8
          CLEARING AGENCY.....................................................................................     8
          CLEARING AGENCY PARTICIPANT.........................................................................     8
          CLOSING DATE........................................................................................     8
          CODE................................................................................................     8
          COMMISSION..........................................................................................     8
          COMMON SECURITY.....................................................................................     8
          COMMON SECURITIES CERTIFICATE.......................................................................     8
          CORPORATE TRUST OFFICE..............................................................................     9
          DEBENTURE EXCHANGE AND REGISTRATION RIGHTS AGREEMENT................................................     9
          DEBENTURE EVENT OF DEFAULT..........................................................................     9
          DEBENTURE PREPAYMENT DATE...........................................................................     9
          DEBENTURE TAX EVENT.................................................................................     9
          DEBENTURE TRUSTEE...................................................................................     9
          DEBENTURES..........................................................................................     9
          DEFINITIVE CAPITAL SECURITIES CERTIFICATES..........................................................     9
          DELAWARE BUSINESS TRUST ACT.........................................................................     9
          DELAWARE TRUSTEE....................................................................................     9
          DEPOSITOR...........................................................................................     9
          DISTRIBUTION DATE...................................................................................     9
          DISTRIBUTIONS.......................................................................................     9
          EARLY TERMINATION EVENT.............................................................................     9
          EVENT OF DEFAULT....................................................................................     9
          EXCHANGE ACT........................................................................................    10
          EXCHANGE CAPITAL SECURITIES.........................................................................    10
          EXCHANGE DEBENTURES.................................................................................    10
</TABLE> 
<PAGE>
 
<TABLE> 
          <S>                                                                                                     <C>  
          EXCHANGE GUARANTEE....................................................................................  10
          EXCHANGE GUARANTEE AGREEMENT..........................................................................  10
          EXCHANGE OFFER........................................................................................  10
          EXPENSE AGREEMENT.....................................................................................  10
          EXPIRATION DATE.......................................................................................  10
          GUARANTEE.............................................................................................  10
          GUARANTEE AGREEMENT...................................................................................  10
          GUARANTEE  EXCHANGE AND REGISTRATION RIGHTS AGREEMENT.................................................  10
          INDENTURE.............................................................................................  11
          INSTITUTIONAL ACCREDITED INVESTOR.....................................................................  11
          LIEN..................................................................................................  11
          LIKE AMOUNT...........................................................................................  11
          LIQUIDATION AMOUNT....................................................................................  11
          LIQUIDATION DATE......................................................................................  11
          LIQUIDATION DISTRIBUTION..............................................................................  11
          1940 ACT..............................................................................................  11
          OFFICERS' CERTIFICATE.................................................................................  11
          OPINION OF COUNSEL....................................................................................  11
          ORIGINAL TRUST AGREEMENT..............................................................................  12
          OUTSTANDING...........................................................................................  12
          OWNER.................................................................................................  12
          PAYING AGENT..........................................................................................  12
          PAYMENT ACCOUNT.......................................................................................  12
          PERSON................................................................................................  12
          PORTAL MARKET.........................................................................................  12
          PRIVATE CAPITAL SECURITIES............................................................................  12
          PRIVATE DEBENTURES....................................................................................  13
          PRIVATE GUARANTEE.....................................................................................  13
          PROPERTY TRUSTEE......................................................................................  13
          PURCHASE AGREEMENT....................................................................................  13
          QIB...................................................................................................  13
          REDEMPTION DATE.......................................................................................  13
          REDEMPTION PRICE......................................................................................  13
          REGISTRATION RIGHTS AGREEMENTS........................................................................  13
          REGULATION S..........................................................................................  13
          RELEVANT TRUSTEE......................................................................................  13
          RULE 144A.............................................................................................  13
          RULE 144(K)...........................................................................................  13
          SECURITIES ACT........................................................................................  13
          SECURITIES REGISTER AND SECURITIES REGISTRAR..........................................................  13
          SECURITYHOLDER OR HOLDER..............................................................................  13
          TAX EVENT.............................................................................................  13
          TRUST.................................................................................................  14
          TRUST AGREEMENT.......................................................................................  14
          TRUST INDENTURE ACT...................................................................................  14
          TRUST PROPERTY........................................................................................  14
</TABLE> 
<PAGE>
 
<TABLE> 
<S>                                                                                                               <C>           
          TRUST SECURITIES CERTIFICATE..........................................................................  14
          TRUST SECURITY........................................................................................  14
          TRUSTEES..............................................................................................  14

ARTICLE II.
ESTABLISHMENT OF THE TRUST......................................................................................  14
     SECTION 2.1. NAME..........................................................................................  14
     SECTION 2.2. OFFICE OF THE DELAWARE TRUSTEE; PRINCIPAL PLACE OF BUSINESS...................................  15
     SECTION 2.3. INITIAL CONTRIBUTION OF TRUST PROPERTY; ORGANIZATIONAL EXPENSES...............................  15
     SECTION 2.4. ISSUANCE OF THE CAPITAL SECURITIES............................................................  15
     SECTION 2.5. ISSUANCE OF THE COMMON SECURITIES; SUBSCRIPTION AND PURCHASE OF DEBENTURES....................  15
     SECTION 2.6. DECLARATION OF TRUST..........................................................................  15
     SECTION 2.7. AUTHORIZATION TO ENTER INTO CERTAIN TRANSACTIONS..............................................  16
     SECTION 2.8. ASSETS OF TRUST...............................................................................  19
     SECTION 2.9. TITLE TO TRUST PROPERTY.......................................................................  19

ARTICLE III.
PAYMENT ACCOUNT.................................................................................................  19
     SECTION 3.1. PAYMENT ACCOUNT...............................................................................  19

ARTICLE IV.
DISTRIBUTIONS; REDEMPTION.......................................................................................  19
     SECTION 4.1. DISTRIBUTIONS.................................................................................  19
     SECTION 4.2. REDEMPTION....................................................................................  20
     SECTION 4.3. SUBORDINATION OF COMMON SECURITIES............................................................  21
     SECTION 4.4. PAYMENT PROCEDURES............................................................................  22
     SECTION 4.5. TAX RETURNS AND REPORTS.......................................................................  22
     SECTION 4.6. PAYMENT OF TAXES, DUTIES, ETC. OF THE TRUST...................................................  22
     SECTION 4.7. PAYMENTS UNDER INDENTURE OR PURSUANT TO DIRECT ACTIONS........................................  22

ARTICLE V.
TRUST SECURITIES CERTIFICATES...................................................................................  22
     SECTION 5.1. INITIAL OWNERSHIP.............................................................................  22
     SECTION 5.2. THE TRUST SECURITIES CERTIFICATES.............................................................  23
     SECTION 5.3. EXECUTION AND DELIVERY OF TRUST SECURITIES CERTIFICATES.......................................  23
     SECTION 5.4. REGISTRATION OF TRANSFER AND EXCHANGE OF CAPITAL SECURITIES CERTIFICATES......................  24
     SECTION 5.5. MUTILATED, DESTROYED, LOST OR STOLEN TRUST SECURITIES CERTIFICATES............................  25
     SECTION 5.6. PERSONS DEEMED SECURITYHOLDERS................................................................  25
     SECTION 5.7. ACCESS TO LIST OF SECURITYHOLDERS' NAMES AND ADDRESSES........................................  25
     SECTION 5.8. MAINTENANCE OF OFFICE OR AGENCY...............................................................  25
     SECTION 5.9. APPOINTMENT OF PAYING AGENT...................................................................  25
</TABLE> 
<PAGE>
 
<TABLE> 
<S>                                                                                                               <C> 
     SECTION 5.10. OWNERSHIP OF COMMON SECURITIES BY DEPOSITOR..................................................  26
     SECTION 5.11. BOOK-ENTRY INTERESTS.........................................................................  26
     SECTION 5.12. NOTICES TO CLEARING AGENCY...................................................................  28
     SECTION 5.13. PROCEDURES FOR ISSUANCE OF DEFINITIVE CAPITAL SECURITIES CERTIFICATES........................  28
     SECTION 5.14. RIGHTS OF SECURITYHOLDERS....................................................................  28

ARTICLE VI.
ACTS OF SECURITYHOLDERS; MEETINGS; VOTING.......................................................................  29
     SECTION 6.1. LIMITATIONS ON VOTING RIGHTS..................................................................  29
     SECTION 6.2. NOTICE OF MEETINGS............................................................................  30
     SECTION 6.3. MEETINGS OF COMMON SECURITYHOLDERS............................................................  30
     SECTION 6.4. VOTING RIGHTS.................................................................................  31
     SECTION 6.5. PROXIES, ETC..................................................................................  31
     SECTION 6.6. SECURITYHOLDER ACTION BY WRITTEN CONSENT......................................................  31
     SECTION 6.7. RECORD DATE FOR VOTING AND OTHER PURPOSES.....................................................  31
     SECTION 6.8. ACTS OF SECURITYHOLDERS.......................................................................  31
     SECTION 6.9. INSPECTION OF RECORDS.........................................................................  32

ARTICLE VII.
REPRESENTATIONS AND WARRANTIES..................................................................................  32
     SECTION 7.1. REPRESENTATIONS AND WARRANTIES OF THE PROPERTY TRUSTEE AND THE DELAWARE TRUSTEE...............  32
     SECTION 7.2. REPRESENTATIONS AND WARRANTIES OF DEPOSITOR...................................................  33

ARTICLE VIII.
THE TRUSTEES....................................................................................................  34
     SECTION 8.1. CERTAIN DUTIES AND RESPONSIBILITIES...........................................................  34
     SECTION 8.2. CERTAIN NOTICES...............................................................................  35
     SECTION 8.3. CERTAIN RIGHTS OF PROPERTY TRUSTEE............................................................  35
     SECTION 8.4. NOT RESPONSIBLE FOR RECITALS OR ISSUANCE OF SECURITIES........................................  36
     SECTION 8.5. MAY HOLD SECURITIES...........................................................................  36
     SECTION 8.6. COMPENSATION; INDEMNITY; FEES.................................................................  37
     SECTION 8.7. CORPORATE PROPERTY TRUSTEE REQUIRED; ELIGIBILITY OF TRUSTEES..................................  38
     SECTION 8.8. CONFLICTING INTERESTS.........................................................................  38
     SECTION 8.9. CO-TRUSTEES AND SEPARATE TRUSTEE..............................................................  38
     SECTION 8.10. RESIGNATION AND REMOVAL; APPOINTMENT OF SUCCESSOR............................................  39
     SECTION 8.11. ACCEPTANCE OF APPOINTMENT BY SUCCESSOR.......................................................  40
     SECTION 8.12. MERGER, CONVERSION, CONSOLIDATION OR SUCCESSION TO BUSINESS..................................  41
     SECTION 8.13. PREFERENTIAL COLLECTION OF CLAIMS AGAINST DEPOSITOR OR TRUST.................................  41
     SECTION 8.14. REPORTS BY PROPERTY TRUSTEE..................................................................  42
     SECTION 8.15. REPORTS TO THE PROPERTY TRUSTEE..............................................................  42
     SECTION 8.16. EVIDENCE OF COMPLIANCE WITH CONDITIONS PRECEDENT.............................................  42
</TABLE> 
<PAGE>
 
<TABLE> 
<S>                                                                                                               <C> 
     SECTION 8.17 NUMBER OF TRUSTEES............................................................................  43
     SECTION 8.18. DELEGATION OF POWER..........................................................................  43

ARTICLE IX.
TERMINATION, LIQUIDATION AND MERGER.............................................................................  43
     SECTION 9.1. TERMINATION UPON EXPIRATION DATE..............................................................  43
     SECTION 9.2. EARLY TERMINATION.............................................................................  43
     SECTION 9.3. TERMINATION...................................................................................  44
     SECTION 9.4. LIQUIDATION...................................................................................  44
     SECTION 9.5. MERGERS, CONSOLIDATIONS, AMALGAMATIONS OR REPLACEMENTS OF THE TRUST...........................  45

ARTICLE X.
MISCELLANEOUS PROVISIONS........................................................................................  46
     SECTION 10.1. LIMITATION OF RIGHTS OF SECURITYHOLDERS......................................................  46
     SECTION 10.2. AMENDMENT....................................................................................  46
     SECTION 10.3. SEPARABILITY.................................................................................  47
     SECTION 10.4. GOVERNING LAW................................................................................  47
     SECTION 10.5. PAYMENTS DUE ON NON-BUSINESS DAY.............................................................  47
     SECTION 10.6. SUCCESSORS...................................................................................  47
     SECTION 10.7. HEADINGS.....................................................................................  47
     SECTION 10.8. REPORTS, NOTICES AND DEMANDS.................................................................  47
     SECTION 10.9 AGREEMENT NOT TO PETITION.....................................................................  48
     SECTION 10.10 TRUST INDENTURE ACT; CONFLICT WITH TRUST INDENTURE ACT.......................................  48
     SECTION 10.11 ACCEPTANCE OF TERMS OF TRUST AGREEMENT, GUARANTEE AND INDENTURE..............................  48
</TABLE>

EXHIBITS
- --------

EXHIBIT A           CERTIFICATE OF TRUST
EXHIBIT B-1         PRIVATE CAPITAL SECURITIES CERTIFICATE
EXHIBIT B-2         EXCHANGE CAPITAL SECURITIES CERTIFICATE
EXHIBIT C           CERTIFICATE DEPOSITORY AGREEMENT
EXHIBIT D           COMMON SECURITIES CERTIFICATES
EXHIBIT E           EXPENSE AGREEMENT
EXHIBIT F           FORM OF TRANSFER CERTIFICATE BY INSTITUTIONAL
                    ACCREDITED INVESTOR
EXHIBIT G           FORM OF TRANSFER CERTIFICATE--OFFSHORE TRANSACTION
EXHIBIT H           FORM OF SECURITIES ACT LEGENDS
<PAGE>
 
     Amended and Restated Trust Agreement, dated as of November 26, 1996, among
(i) First Bank System, Inc., a Delaware corporation (including any successors or
assigns, the "Depositor"), (ii) Wilmington Trust Company, a banking corporation
organized under the laws of Delaware, as property trustee (in such capacity, the
"Property Trustee" and, in its separate corporate capacity and not in its
capacity as Property Trustee, the "Bank"), (iii) Wilmington Trust Company, a
banking corporation organized under the laws of the State of Delaware, as
Delaware trustee (the "Delaware Trustee"), (iv) Susan E. Lester, an individual,
Lee R. Mitau, an individual, and David J. Parrin, an individual, each of whose
address is c/o First Bank System, Inc., 601 Second Avenue South, Minneapolis,
Minnesota 55402 (each an "Administrative Agent" and collectively the
"Administrative Agents") (the Property Trustee, the Delaware Trustee and the
Administrative Agents referred to collectively as the "Trustees") and (v) the
several Holders, as hereinafter defined.

                                  Witnesseth

     Whereas, the Depositor, the Property Trustee and the Delaware Trustee have
heretofore duly declared and established a business trust pursuant to the
Delaware Business Trust Act by the entering into that certain Trust Agreement,
dated as of November 6, 1996 (the "Original Trust Agreement"), and by the
execution and filing by the Trustees with the Secretary of State of the State of
Delaware of the Certificate of Trust, filed on November 6, 1996, attached as
Exhibit A; and

     Whereas, the Depositor and the Trustees desire to amend and restate the
Original Trust Agreement in its entirety as set forth herein to provide for,
among other things, (i) the issuance of the Common Securities by the Trust to
the Depositor, (ii) the issuance and sale of the Private Capital Securities by
the Trust pursuant to the Purchase Agreement, (iii) the acquisition by the Trust
from the Depositor of all of the right, title and interest in the Private
Debentures, (iv) the appointment of the Administrative Agents, and (v) the
mandatory exchange by the Property Trustee with the Depositor of the Private
Debentures for the Exchange Debentures, and the exchange by the Trust with the
Securityholders of the Private Capital Securities for the Exchange Capital
Securities, each such exchange registered under the Securities Act;

     Now Therefore, in consideration of the agreements and obligations set forth
herein and for other good and valuable consideration, the sufficiency of which
is hereby acknowledged, each party, for the benefit of the other parties and for
the benefit of the Securityholders, hereby amends and restates the Original
Trust Agreement in its entirety and agrees as follows:


                                   ARTICLE I

                                 Defined Terms

     Section 1.1. Definitions.

     For all purposes of this Trust Agreement, except as otherwise expressly
provided or unless the context otherwise requires:

     (a) the terms defined in this Article have the meanings assigned to them in
this Article and include the plural as well as the singular;

     (b) all other terms used herein that are defined in the Trust Indenture
Act, either directly or by reference therein, have the meanings assigned to them
therein;

     (c) unless the context otherwise requires, any reference to an "Article" or
a "Section" refers to an Article or a Section, as the case may be, of this Trust
Agreement; and

                                       1
<PAGE>
 
     (d) the words "herein," "hereof" and "hereunder" and other words of similar
import refer to this Trust Agreement as a whole and not to any particular
Article, Section or other subdivision.

     "Act" has the meaning specified in Section 6.8.

     "Additional Amount" means, with respect to Trust Securities of a given
Liquidation Amount and/or a given period, the amount of Additional Interest (as
defined in the Indenture) paid by the Depositor on a Like Amount of Debentures
for such period.

     "Additional Distributions" means, with respect to Trust Securities of a
given Liquidation Amount and/or a given period, the amount of Special Interest
(as defined in the Capital Securities Exchange and Registration Rights
Agreement) paid by the Depositor on a Like Amount of Debentures of such period.

     "Additional Sums" has the meaning specified in Section 10.6 of the
Indenture.

     "Administrative Agent" means each of the Persons identified as an
"Administrative Agent" in the preamble to this Trust Agreement solely in such
Person's capacity as Administrative Agent of the Trust formed and continued
hereunder and not in such Person's individual capacity, or such Administrative
Agent successor in interest in such capacity, or any successor agent appointed
as herein provided.

     "Affiliate" of any specified Person means any other Person directly or
indirectly controlling or controlled by or under direct or indirect common
control with such specified Person. For the purposes of this definition,
"control" when used with respect to any specified Person means the power to
direct the management and policies of such Person, directly or indirectly,
whether through the ownership of voting securities, by contract or otherwise;
and the terms "controlling" and "controlled" have meanings correlative to the
foregoing.

     "Bank" has the meaning specified in the preamble to this Trust Agreement.

     "Bankruptcy Event" means, with respect to any Person:

     (a) the entry of a decree or order by a court having jurisdiction in the
premises judging such Person a bankrupt or insolvent, or approving as properly
filed a petition seeking reorganization, arrangement, adjudication or
composition of or in respect of such Person under any applicable Bankruptcy Law,
or appointing a receiver, liquidator, assignee, trustee, sequestrator (or other
similar official) of such Person or of any substantial part of its property or
ordering the winding up or liquidation of its affairs, and the continuance of
any such decree or order unstayed and in effect for a period of 60 consecutive
days; or

     (b) the institution by such Person of proceedings to be adjudicated a
bankrupt or insolvent, or the consent by it to the institution of bankruptcy or
insolvency proceedings against it, or the filing by it of a petition or answer
or consent seeking reorganization or relief under any applicable Bankruptcy Law,
or the consent by it to the filing of any such petition or to the appointment of
a receiver, liquidator, assignee, trustee, sequestrator (or similar official) of
such Person or of any substantial part of its property, or the making by it of
an assignment for the benefit of creditors, or the admission by it in writing of
its inability to pay its debts generally as they become due and its willingness
to be adjudicated a bankrupt, or the taking of corporate action by such Person
in furtherance of any such action.

     "Bankruptcy Laws" means any Federal or State bankruptcy, insolvency,
reorganization or similar law.

     "Board Resolution" means a copy of a resolution certified by the Secretary
or an Assistant Secretary of the Depositor to have been duly adopted by the
Depositor's Board of Directors, or such committee of the Board of 

                                       2
<PAGE>
 
Directors or officers of the Depositor to which authority to act on behalf of
the Board of Directors has been delegated, and to be in full force and effect on
the date of such certification, and delivered to the Trustees.

     "Book-Entry Capital Securities Certificates" means a beneficial interest in
the Capital Securities Certificates, ownership and transfers of which shall be
made through book entries by a Clearing Agency as described in Section 5.11.

     "Business Day" means a day other than (a) a Saturday or Sunday, (b) a day
on which banking institutions in The City of New York are authorized or required
by law or executive order to remain closed, or (c) a day on which the Property
Trustee's Corporate Trust Office or the Corporate Trust Office of the Debenture
Trustee is closed for business.

     "Capital Securities Certificate" means a certificate evidencing ownership
of Capital Securities, substantially in the form attached as Exhibit B-1 (with
respect to Private Capital Securities) or Exhibit B-2 (in the case of Exchange
Capital Securities.

     "Capital Securities Exchange and Registration Rights Agreement" means an
agreement dated November 26, 1996 among the Depositor, the Trust and the Initial
Purchasers named in the Purchase Agreement.

     "Capital Security" means either a Private Capital Security or an Exchange
Capital Security, whichever is outstanding as of the applicable date.

     "Certificate Depository Agreement" means the agreement among the Trust, the
Depositor and The Depository Trust Company, as the initial Clearing Agency,
dated as of the Closing Date, relating to the Trust Securities Certificates and
the Exchange Capital Securities, substantially in the form attached as Exhibit
C, as the same may be amended and supplemented from time to time.

     "Clearing Agency" means an organization registered as a "clearing agency"
pursuant to Section 17A of the Securities Exchange Act of 1934, as amended. The
Depository Trust Company will be the initial Clearing Agency.

     "Clearing Agency Participant" means a broker, dealer, bank, other financial
institution or other Person for whom from time to time a Clearing Agency effects
book-entry transfers and pledges of securities deposited with the Clearing
Agency.

     "Closing Date" means November 26, 1996.

     "Code" means the Internal Revenue Code of 1986, as amended.

     "Commission" means the Securities and Exchange Commission, as from time to
time constituted, created under the Securities Exchange Act of 1934, as amended,
or, if at any time after the execution of this instrument such Commission is not
existing and performing the duties now assigned to it under the Trust Indenture
Act, then the body performing such duties at such time.

     "Common Security" means an undivided beneficial interest in the assets of
the Trust, having a Liquidation Amount of $1,000 and having the rights provided
therefor in this Trust Agreement, including the right to receive Distributions
and a Liquidation Distribution as provided herein.

     "Common Securities Certificate" means a certificate evidencing ownership of
Common Securities, substantially in the form attached as Exhibit D.

                                       3
<PAGE>
 
     "Corporate Trust Office" means (i) when used with respect to the Property
Trustee, the principal office of the Property Trustee located in Wilmington,
Delaware and (ii) when used with respect to the Debenture Trustee, the principal
office of the Debenture Trustee located in Wilmington, Delaware.

     "Debenture Event of Default" means an "Event of Default" as defined in the
Indenture.

     "Debenture Exchange and Registration Rights Agreement" means an agreement
dated November 26, 1996 among the Depositor, the Trust and the Initial
Purchasers named in the Purchase Agreement.

     "Debenture Prepayment Date" means, with respect to any Debentures to be
prepaid under the Indenture, the date fixed for prepayment under the Indenture.

     "Debenture Tax Event" means a "Tax Event" as defined in the Indenture.

     "Debenture Trustee" means Wilmington Trust Company, a banking corporation
organized under the laws of the State of Delaware and any successor thereto.

     "Debentures" means either the Private Debentures or the Exchange
Debentures, whichever is outstanding as of the applicable date.

     "Definitive Capital Securities Certificates" means either or both (as the
context requires) of (a) Capital Securities Certificates issued as Book-Entry
Capital Securities Certificate as provided in Section 5.11(a) and (b) Capital
Securities Certificates issued in certificated, fully registered form as
provided in Section 5.13.

     "Delaware Business Trust Act" means Chapter 38 of Title 12 of the Delaware
Code, 12 Del. C. ((S)) 3801, et seq., as it may be amended from time to time.

     "Delaware Trustee" means the Person identified as the "Delaware Trustee" in
the preamble to this Trust Agreement solely in its capacity as Delaware Trustee
of the Trust formed and continued hereunder and not in its individual capacity,
or its successor in interest in such capacity, or any successor trustee
appointed as herein provided.

     "Depositor" has the meaning specified in the preamble to this Trust
Agreement.

     "Distribution Date" has the meaning specified in Section 4.1(a).

     "Distributions" means amounts payable in respect of the Trust Securities as
provided in Section 4.1.

     "Early Termination Event" has the meaning specified in Section 9.2.

     "Event of Default" means any one of the following events (whatever the
reason for such Event of Default and whether it shall be voluntary or
involuntary or be effected by operation of law or pursuant to any judgment,
decree or order of any court or any order, rule or regulation of any
administrative or governmental body):

     (a) the occurrence of a Debenture Event of Default; or

     (b) default by the Property Trustee in the payment of any Distribution when
it becomes due and payable, and continuation of such default for a period of 30
days; or

                                       4
<PAGE>
 
     (c) default by the Property Trustee in the payment of any Redemption Price
of any Trust Security when it becomes due and payable; or

     (d) default in the performance, or breach, in any material respect, of any
covenant or warranty of the Trustees in this Trust Agreement (other than a
covenant or warranty a default in the performance or breach of which is dealt
with in clause (b) or (c) above) and continuation of such default or breach for
a period of 60 days after there has been given, by registered or certified mail,
to the defaulting Trustee or Trustees by the Holders of at least 25% in
aggregate liquidation preference of the Outstanding Capital Securities a written
notice specifying such default or breach and requiring it to be remedied and
stating that such notice is a "Notice of Default" hereunder; or

     (e) the occurrence of a Bankruptcy Event with respect to the Property
Trustee and the failure by the Depositor to appoint a successor Property Trustee
within 60 days thereof.

     "Exchange Act" means the Securities Exchange Act of 1934, as amended.

     "Exchange Capital Securities" means capital securities representing
undivided beneficial interests in the assets of the Trust, issued by the Trust
in an exchange offer for the Private Capital Securities, such exchange offer
being registered under the Securities Act, all pursuant to the Capital
Securities Exchange and Registration Rights Agreement; provided however that the
aggregate Liquidation Amount of the Private Capital Securities and the Exchange
Capital Securities at any one time outstanding shall not exceed $300,000,000.

     "Exchange Debentures" means a new series of junior subordinated debentures
issued by the Depositor in a mandatory exchange offer for the Private
Debentures, such exchange offer being registered under the Securities Act, all
pursuant to the Debenture Exchange and Registration Rights Agreement.

     "Exchange Guarantee" means the Exchange Guarantee extended by the Depositor
for the benefit of the Holders of Capital Securities pursuant to the Exchange
Guarantee Agreement, and registered under the Securities Act pursuant to the
Guarantee Exchange and Registration Rights Agreement.

     "Exchange Guarantee Agreement" means the Guarantee Agreement to be entered
into by the Depositor, as Guarantor and Wilmington Trust Company, as Guarantee
Trustee, pursuant to the Guarantee Exchange and Registration Rights Agreement.

     "Exchange Offer" means an exchange offer of the Exchange Capital Securities
for the Private Capital Securities, which is registered under the Securities Act
pursuant to the Capital Securities Exchange and Registration Rights Agreement.

     "Expense Agreement" means the Agreement as to Expenses and Liabilities
between the Depositor and the Trust, substantially in the form attached as
Exhibit E, as amended from time to time.

     "Expiration Date" has the meaning specified in Section 9.1.

     "Guarantee" means (i) prior to the exchange in connection with the Exchange
Offer, the Private Guarantee and (ii) following the exchange in connection with
the Exchange Offer, the Exchange Guarantee.

     "Guarantee Agreement" means the Guarantee Agreement dated November 26, 1996
between the Depositor, as Guarantor, and Wilmington Trust Company, as Guarantee
Trustee.

     "Guarantee Exchange and Registration Rights Agreement" means an agreement
dated November 26, 1996 among the Depositor, the Trust and the Initial
Purchasers named in the Purchase Agreement.

                                       5
<PAGE>
 
     "Indenture" means the Junior Subordinated Indenture, dated as of November
15, 1996, between the Depositor and the Debenture Trustee, as trustee, as
amended or supplemented from time to time.

     "Institutional Accredited Investor" means an institutional investor that is
an "accredited investor" within the meaning of Rule 501(a)(1), (2), (3) or (7)
under the Securities Act.

     "Lien" means any lien, pledge, charge, encumbrance, mortgage, deed of
trust, adverse ownership interest, adverse claim, hypothecation, assignment,
security interest or preference, priority or other security agreement or
preferential arrangement of any kind or nature whatsoever.

     "Like Amount" means (a) with respect to a redemption of Trust Securities,
Trust Securities having a Liquidation Amount equal to the principal amount of
Debentures to be contemporaneously prepaid in accordance with the Indenture the
proceeds of which will be used to pay the Redemption Price of such Trust
Securities, and (b) with respect to a distribution of Debentures to Holders of
Trust Securities in connection with a dissolution or liquidation of the Trust,
Debentures having a principal amount equal to the Liquidation Amount of the
Trust Securities of the Holder to whom such Debentures are distributed.

     "Liquidation Amount" means the stated amount of $1,000 per Trust Security.

     "Liquidation Date" means the date on which Debentures are to be distributed
to Holders of Trust Securities in connection with a termination and liquidation
of the Trust pursuant to Section 9.4(a).

     "Liquidation Distribution" has the meaning specified in Section 9.4(d).

     "1940 Act" means the Investment Company Act of 1940, as amended.

     "Officers' Certificate" means a certificate signed by the Chairman and
Chief Executive Officer, President or a Vice President, and by the Treasurer, an
Associate Treasurer, an Assistant Treasurer, the Controller, the Secretary or an
Assistant Secretary, of the Depositor, and delivered to the appropriate Trustee.
One of the officers signing an Officers' Certificate given pursuant to Section
8.16 shall be the principal executive, financial or accounting officer of the
Depositor. Any Officers' Certificate delivered with respect to compliance with a
condition or covenant provided for in this Trust Agreement shall include:

     (a) a statement that each officer signing the Officers' Certificate has
read the covenant or condition and the definitions relating thereto;

     (b) a brief statement of the nature and scope of the examination or
investigation undertaken by each officer in rendering the Officers' Certificate;

     (c) a statement that each such officer has made such examination or
investigation as, in such officer's opinion, is necessary to enable such officer
to express an informed opinion as to whether or not such covenant or condition
has been complied with; and

     (d) a statement as to whether, in the opinion of each such officer, such
condition or covenant has been complied with.

     "Opinion of Counsel" means a written opinion of counsel, who may be counsel
for the Trust, the Property Trustee or the Depositor, but not an employee of any
thereof, and who shall be reasonably acceptable to the Property Trustee.

                                       6
<PAGE>
 
     "Original Trust Agreement" has the meaning specified in the recitals to
this Trust Agreement.

     "Outstanding," when used with respect to Trust Securities, means, as of the
date of determination, all Trust Securities theretofore executed and delivered
under this Trust Agreement, except:

     (a) Trust Securities theretofore cancelled by the Property Trustee or
delivered to the Property Trustee for cancellation;

     (b) Trust Securities for whose payment or redemption money in the necessary
amount has been theretofore deposited with the Property Trustee or any Paying
Agent for the Holders of such Trust Securities; provided that, if such Trust
Securities are to be redeemed, notice of such redemption has been duly given
pursuant to this Trust Agreement; and

     (c) Trust Securities which have been paid or in exchange for or in lieu of
which other Trust Securities have been executed and delivered pursuant to
Sections 5.4, 5.5, 5.11 and 5.13;

provided, however, that in determining whether the Holders of the requisite
Liquidation Amount of the Outstanding Capital Securities have given any request,
demand, authorization, direction, notice, consent or waiver hereunder, Capital
Securities owned by the Depositor, any Trustee or any Affiliate of the Depositor
or any Trustee shall be disregarded and deemed not to be Outstanding, except
that (a) in determining whether any Trustee shall be protected in relying upon
any such request, demand, authorization, direction, notice, consent or waiver,
only Capital Securities that such Trustee knows to be so owned shall be so
disregarded and (b) the foregoing shall not apply at any time when all of the
outstanding Capital Securities are owned by the Depositor, one or more of the
Trustees and/or any such Affiliate. Capital Securities so owned which have been
pledged in good faith may be regarded as Outstanding if the pledgee establishes
to the satisfaction of the Administrative Agents the pledgee's right so to act
with respect to such Capital Securities and that the pledgee is not the
Depositor or any Affiliate of the Depositor.

     "Owner" means each Person who is the beneficial owner of a Book-Entry
Capital Securities Certificate as reflected in the records of the Clearing
Agency or, if a Clearing Agency Participant is not the Owner, then as reflected
in the records of a Person maintaining an account with such Clearing Agency
(directly or indirectly, in accordance with the rules of such Clearing Agency).

     "Paying Agent" means any paying agent or co-paying agent appointed pursuant
to Section 5.9 and shall initially be the Bank.

     "Payment Account" means a segregated non-interest-bearing corporate trust
account maintained by the Property Trustee with the Bank in its trust department
for the benefit of the Securityholders in which all amounts paid in respect of
the Debentures will be held and from which the Property Trustee, through the
Paying Agent, shall make payments to the Securityholders in accordance with
Sections 4.1 and 4.2.

     "Person" means any individual, corporation, partnership, joint venture,
trust, limited liability company or corporation, unincorporated organization or
government or any agency or political subdivision thereof.

     "PORTAL Market" means the Private Offerings, Resales and Trading through
Automated Linkages Market operated by the National Association of Securities
Dealers, Inc. or any successor thereto.

     "Private Capital Securities"  means the $300,000,000 aggregate Liquidation
Amount of the Trust's 8.09% Capital Securities representing undivided beneficial
interests in the assets of the Trust, having a Liquidation Amount of $1,000 per
Capital Security and having the rights provided therefor in this Trust
Agreement, and the certificates of 

                                       7
<PAGE>
 
which initially shall bear legends indicating that they have not been registered
under the Securities Act of 1933, as amended, and restricting transfers thereof.

     "Private Debentures" means the $309,279,000 aggregate principal amount of
the Depositor's 8.09% Junior Subordinated Debentures, issued pursuant to the
Indenture on the Closing Date.

     "Private Guarantee" means the Guarantee extended by the Depositor for the
benefit of the Holders of Private Capital Securities pursuant to the Guarantee
Agreement.

     "Property Trustee" means the Person identified as the "Property Trustee" in
the preamble to this Trust Agreement solely in its capacity as Property Trustee
of the Trust heretofore formed and continued hereunder and not in its individual
capacity, or its successor in interest in such capacity, or any successor
property trustee appointed as herein provided.

     "Purchase Agreement" means the Purchase Agreement, dated as of November 19,
1996, among the Trust, the Depositor and the Initial Purchasers named therein.

     "QIB" means a "qualified institutional buyer" as defined in Rule 144A.

     "Redemption Date" means, with respect to any Trust Security to be redeemed,
the date fixed for such redemption by or pursuant to this Trust Agreement;
provided that each Debenture Prepayment Date and the stated maturity of the
Debentures shall be a Redemption Date.

     "Redemption Price" means, with respect to any Trust Security, the
Liquidation Amount of such Trust Security, plus accumulated and unpaid
Distributions to the Redemption Date, plus the related amount of the premium, if
any, paid by the Depositor upon the concurrent prepayment of the Debentures,
allocated on a pro rata basis (based on Liquidation Amounts) among the Trust
Securities.

     "Registration Rights Agreements" means the Capital Securities Exchange and
Registration Rights Agreement, the Debenture Exchange and Registration Rights
Agreement and the Guarantee Exchange and Registration Rights Agreement,
collectively.

     "Regulation S" means Regulation S under the Securities Act or any successor
provision.

     "Relevant Trustee" shall have the meaning specified in Section 8.10.

     "Rule 144A" means Rule 144A as promulgated under the Securities Act, or any
successor rule.

     "Rule 144(k)" means Rule 144(k) as promulgated under the Securities Act, or
any successor rule.

     "Securities Act" means the Securities Act of 1933, as amended.

     "Securities Register" and "Securities Registrar" have the respective
meanings specified in Section 5.4(a).

     "Securityholder" or "Holder" means a Person in whose name a Trust Security
or Trust Securities is registered in the Securities Register; any such Person
shall be deemed to be a beneficial owner within the meaning of the Delaware
Business Trust Act.

     "Tax Event" means the receipt by the Trust of an Opinion of Counsel
experienced in such matters to the effect that, as a result of any amendment to,
or change (including any announced prospective change) in, the laws (or 

                                       8
<PAGE>
 
any regulations thereunder) of the United States or any political subdivision or
taxing authority thereof or therein, or as a result of any official
administrative pronouncement or judicial decision interpreting or applying such
laws or regulations, which amendment or change is effective or which
pronouncement or decision is announced on or after the date of issuance of the
Capital Securities under this Trust Agreement, there is more than an
insubstantial risk that (i) the Trust is, or will be within 90 days after the
date of such Opinion of Counsel, subject to United States Federal income tax
with respect to income received or accrued on the Debentures, (ii) interest
payable by the Depositor on the Debentures is not, or within 90 days after the
date of such Opinion of Counsel, will not be, deductible by the Depositor, in
whole or in part, for United States Federal income tax purposes or (iii) the
Trust is, or will be within 90 days after the date of such Opinion of Counsel,
subject to more than a de minimis amount of other taxes, duties, assessments or
other governmental charges.

     "Trust" means the Delaware business trust created and continued hereby and
identified on the cover page to this Trust Agreement.

     "Trust Agreement" means this Amended and Restated Trust Agreement, as the
same may be modified, amended or supplemented in accordance with the applicable
provisions hereof, including (i) all exhibits hereto and (ii) for all purposes
of this Trust Agreement and any such modification, amendment or supplement, the
provisions of the Trust Indenture Act that are deemed to be a part of and govern
this Trust Agreement and any such modification, amendment or supplement,
respectively.

     "Trust Indenture Act" means the Trust Indenture Act of 1939 as in force at
the date as of which this instrument was executed; provided, however, that in
the event the Trust Indenture Act of 1939 is amended after such date, "Trust
Indenture Act" means, to the extent required by any such amendment, the Trust
Indenture Act of 1939 as so amended.

     "Trust Property" means (a) the Debentures, (b) the rights of the Property
Trustee under the Guarantee, (c) any cash on deposit in, or owing to, the
Payment Account and (d) all proceeds and rights in respect of the foregoing and
any other property and assets for the time being held or deemed to be held by
the Property Trustee pursuant to the trusts of this Trust Agreement.

     "Trust Securities Certificate" means any one of the Common Securities
Certificates or the Capital Securities Certificates.

     "Trust Security" means any one of the Common Securities or the Capital
Securities.

     "Trustees" means, collectively, the Property Trustee, the Delaware Trustee
and the Administrative Agents.


                                  ARTICLE II.

                          Establishment of the Trust

     Section 2.1. Name.

     The Trust continued hereby shall be known as "FBS Capital I," as such name
may be modified from time to time by the Administrative Agents following written
notice to the Holders of Trust Securities and the other Trustees, in which name
the Trustees may engage in the transactions contemplated hereby, make and
execute contracts and other instruments on behalf of the Trust and sue and be
sued.  The Depositor may still sign documents on behalf of the Trust including,
but not limited to, the registration statement contemplated by the Exchange
Offer.

                                       9
<PAGE>
 
     Section 2.2. Office of the Delaware Trustee; Principal Place of Business.

     The address of the Delaware Trustee in the State of Delaware is 1100 North
Market, Wilmington, Delaware  19890, Attention: Corporate Trust Administration,
or such other address in the State of Delaware as the Delaware Trustee may
designate by written notice to the Securityholders and the Depositor. The
principal executive office of the Trust is c/o First Bank System, Inc., 601
Second Avenue South, Minneapolis, Minnesota 55402.

     Section 2.3. Initial Contribution of Trust Property; Organizational
Expenses.

     The Property Trustee acknowledges receipt in trust from the Depositor in
connection with the Original Trust Agreement of the sum of $10, which
constituted the initial Trust Property. The Depositor shall pay organizational
expenses of the Trust as they arise or shall, upon request of any Trustee,
promptly reimburse such Trustee for any such expenses paid by such Trustee
pursuant to the Expense Agreement. The Depositor shall make no claim upon the
Trust Property for the payment of such expenses.

     Section 2.4. Issuance of the Capital Securities.

     On November 19, 1996 the Depositor, on behalf of the Trust and pursuant to
the Original Trust Agreement, executed and delivered the Purchase Agreement.
Contemporaneously with the execution and delivery of this Trust Agreement, an
Administrative Agent, on behalf of the Trust, shall execute in accordance with
Section 5.2 and deliver to the Initial Purchasers named in the Purchase
Agreement Capital Securities Certificates, registered in the name of the nominee
of the initial Clearing Agency and in the names of certain institutional
accredited investors, if any, in an aggregate number of 300,000 Private Capital
Securities having an aggregate Liquidation Amount of $300,000,000, against
receipt of such aggregate purchase price of such Private Capital Securities of
$300,741,583.33, which amount the Administrative Agent shall promptly deliver to
the Property Trustee.

     Section 2.5. Issuance of the Common Securities; Subscription and Purchase
of Debentures.

     Contemporaneously with the execution and delivery of this Trust Agreement,
an Administrative Agent, on behalf of the Trust, shall execute in accordance
with Section 5.2 and deliver to the Depositor Common Securities Certificates,
registered in the name of the Depositor, in an aggregate number of 9,279 Common
Securities having an aggregate Liquidation Amount of $9,279,000 against payment
by the Depositor of such amount, which amount such Administrative Agent shall
promptly deliver to the Property Trustee. Contemporaneously therewith, an
Administrative Agent, on behalf of the Trust, shall subscribe to and purchase
from the Depositor Private Debentures, registered in the name of the Property
Trustee and having an aggregate principal amount equal to $309,279,000 and, in
satisfaction of the purchase price for such Private Debentures, the Property
Trustee, on behalf of the Trust, shall deliver to the Depositor the sum of
$310,043,520.50 (being the sum of the amounts delivered to the Property Trustee
pursuant to (i) the second sentence of Section 2.4 and (ii) the first sentence
of this Section 2.5).

     Section 2.6. Declaration of Trust.

     The exclusive purposes and functions of the Trust are (a) to issue and sell
Trust Securities (including the Exchange Capital Securities pursuant to the
Exchange Offer), (b) to use the proceeds from the sale of Trust Securities to
acquire the Private Debentures, (c) to exchange the Private Debentures for the
Exchange Debentures pursuant to the Indenture, and (d) to engage in those
activities necessary, advisable or incidental thereto (such as registering the
transfer of the Trust Securities). The Depositor hereby appoints the Trustees as
trustees of the Trust, as the case may be, to have all the rights, powers and
duties to the extent set forth herein, and the Trustees hereby accept such
appointment. The Property Trustee hereby declares that it will hold the Trust
Property in trust upon and subject to the conditions set forth herein for the
benefit of the Trust and the Securityholders. The Administrative Agents shall
have all rights, powers and duties set forth herein and in accordance with
applicable law with respect to 

                                       10
<PAGE>
 
accomplishing the purposes of the Trust. The Delaware Trustee shall not be
entitled to exercise any powers, nor shall the Delaware Trustee have any of the
duties and responsibilities, of the Property Trustee or the Administrative
Agents set forth herein. The Delaware Trustee shall be one of the Trustees of
the Trust for the sole and limited purpose of fulfilling the requirements of
Section 3807 of the Delaware Business Trust Act.

     Section 2.7. Authorization to Enter into Certain Transactions.

     (a) The Trustees shall conduct the affairs of the Trust in accordance with
the terms of this Trust Agreement. Subject to the limitations set forth in
paragraph (b) of this Section and Section 2.6, and in accordance with the
following provisions (i) and (ii), the Trustees shall have the authority to
enter into all transactions and agreements determined by the Trustees to be
appropriate in exercising the authority, express or implied, otherwise granted
to the Trustees under this Trust Agreement, and to perform all acts in
furtherance thereof, including without limitation, the following:

               (i) As among the Trustees, each Administrative Agent shall have
     the power and authority to act on behalf of the Trust with respect to the
     following matters:

                         (A) the issuance and sale of the Trust Securities;

                         (B) to cause the Trust to enter into, and to execute,
               deliver and perform on behalf of the Trust, the Registration
               Rights Agreements, the Expense Agreement and the Certificate
               Depository Agreement and such other agreements as may be
               necessary or desirable in connection with the purposes and
               function of the Trust;

                         (C) assisting in the registration of the Exchange Offer
               and the Exchange Capital Securities under the Securities Act of
               1933, as amended, and under state securities or blue sky laws,
               and the qualification of this Trust Agreement as a trust
               indenture under the Trust Indenture Act, all in accordance with
               the Capital Securities Exchange and Registration Rights
               Agreement;

                         (D) assisting in the listing of the Exchange Capital
               Securities upon such securities exchange or exchanges as shall be
               determined by the Depositor and the registration of the Exchange
               Capital Securities under the Securities Exchange Act of 1934, as
               amended, and the preparation and filing of all periodic and other
               reports and other documents pursuant to the foregoing, all in
               accordance with the Capital Securities Exchange and Registration
               Rights Agreement;

                         (E) the sending of notices (other than notices of
               default) and other information regarding the Trust Securities and
               the Debentures to the Securityholders in accordance with this
               Trust Agreement;

                         (F) the appointment of a Paying Agent, authenticating
               agent and Securities Registrar in accordance with this Trust
               Agreement;

                         (G) registering transfer of the Trust Securities in
               accordance with this Trust Agreement;

                         (H) to the extent provided in this Trust Agreement, the
               winding up of the affairs of and liquidation of the Trust and the
               preparation, execution and filing of the certificate of
               cancellation with the Secretary of State of the State of
               Delaware;

                         (I) unless otherwise determined by the Depositor, the
               Property Trustee or the Administrative Agents, or as otherwise
               required by the Delaware Business Trust Act or the Trust

                                       11
<PAGE>
 
               Indenture Act, to execute on behalf of the Trust (either acting
               alone or together with any or all of the Administrative Agents)
               any documents that the Administrative Agents have the power to
               execute pursuant to this Trust Agreement; and

                         (J) the taking of any action incidental to the
               foregoing as the Trustees may from time to time determine is
               necessary or advisable to give effect to the terms of this Trust
               Agreement for the benefit of the Securityholders (without
               consideration of the effect of any such action on any particular
               Securityholder).

               (ii) As among the Trustees, the Property Trustee shall have the
     power, duty and authority to act on behalf of the Trust with respect to the
     following matters:

                         (A) the establishment of the Payment Account;

                         (B) the receipt of the Debentures;

                         (C) the collection of interest, principal and any other
               payments made in respect of the Debentures in the Payment
               Account;

                         (D) the distribution through the Paying Agent of
               amounts owed to the Securityholders in respect of the Trust
               Securities;

                         (E) the exercise of all of the rights, powers and
               privileges of a holder of the Debentures;

                         (F) the sending of notices of default and other
               information regarding the Trust Securities and the Debentures to
               the Securityholders in accordance with this Trust Agreement;

                         (G) the distribution of the Trust Property in
               accordance with the terms of this Trust Agreement;

                         (H) to the extent provided in this Trust Agreement, the
               winding up of the affairs of and liquidation of the Trust and the
               preparation, execution and filing of the certificate of
               cancellation with the Secretary of State of the State of
               Delaware;

                         (I) to exchange the Private Guarantee for the Exchange
               Guarantee pursuant to the Guarantee Exchange and Registration
               Rights Agreement in the exchange in connection with the Exchange
               Offer;

                         (J) to exchange the Private Debentures for the Exchange
               Debentures in an exchange in connection with the Exchange Offer
               pursuant to the Debenture Exchange and Registration Rights
               Agreement;

                         (K) after an Event of Default (other than under
               paragraph (b), (c), (d) or (e) of the definition of such term if
               such Event of Default is by or with respect to the Property
               Trustee) the taking of any action incidental to the foregoing as
               the Property Trustee may from time to time determine is necessary
               or advisable to give effect to the terms of this Trust Agreement
               and protect and conserve the Trust Property for the benefit of
               the Securityholders (without consideration of the effect of any
               such action on any particular Securityholder) and, within five
               Business Days after the occurrence of any Event of Default
               actually known to the Property Trustee, to give notice thereof to
               the Securityholders; and

                                       12
<PAGE>
 
                         (L) except as otherwise provided in this Section
               2.7(a)(ii), the Property Trustee shall have none of the duties,
               liabilities, powers or the authority of the Administrative Agents
               set forth in Section 2.7(a)(i).

     (b) So long as this Trust Agreement remains in effect, the Trust (or the
Trustees acting on behalf of the Trust) shall not undertake any business,
activities or transaction except as expressly provided herein or contemplated
hereby. In particular, the Trustees shall not (i) acquire any investments or
engage in any activities not authorized by this Trust Agreement, (ii) sell,
assign, transfer, exchange, mortgage, pledge, set-off or otherwise dispose of
any of the Trust Property or interests therein, including to Securityholders,
except as expressly provided herein, (iii) take any action that would cause the
Trust to fail or cease to qualify as a "grantor trust" for United States Federal
income tax purposes, (iv) incur any indebtedness for borrowed money or issue any
other debt or (v) take or consent to any action that would result in the
placement of a Lien on any of the Trust Property. The Administrative Agents
shall defend all claims and demands of all Persons at any time claiming any Lien
on any of the Trust Property adverse to the interest of the Trust or the
Securityholders in their capacity as Securityholders.

     (c) In connection with the issue and sale of the Capital Securities, the
Depositor shall have the right and responsibility to assist the Trust with
respect to, or effect on behalf of the Trust, the following (and any actions
taken by the Depositor in furtherance of the following prior to the date of this
Trust Agreement are hereby ratified and confirmed in all respects):

               (i) the preparation of a preliminary offering circular and an
     offering circular and the preparation and filing by the Trust with the
     Commission and the execution on behalf of the Trust of a registration
     statement on the appropriate form in relation to the Exchange Offer,
     including any amendments thereto and/or a "shelf" registration statement to
     register the Private Capital Securities, the Guarantee and the Private
     Debentures, in each case in accordance with the provisions of the
     Registration Rights Agreements;

               (ii) the determination of the States in which to take appropriate
     action to qualify or register for sale the Capital Securities and the
     Guarantee and the determination of any and all such acts, other than
     actions which must be taken by or on behalf of the Trust, and the advice to
     the Trustees of actions they must take on behalf of the Trust, and the
     preparation for execution and filing of any documents to be executed and
     filed by the Trust or on behalf of the Trust, as the Depositor deems
     necessary or advisable in order to comply with the applicable laws of any
     such States;

               (iii) the preparation for filing by the Trust with the Commission
     and the execution on behalf of the Trust of a registration statement on
     Form 10 relating to the registration of the Exchange Capital Securities
     under Section 12(g) of the Exchange Act prior to April 30, 1997;

               (iv) the negotiation of the terms of, and the execution and
     delivery of, the Purchase Agreement providing for the sale of the Private
     Capital Securities; and

               (v) the taking of any other actions necessary or desirable to
     carry out any of the foregoing activities.

     (d) Notwithstanding anything herein to the contrary, the Administrative
Agents are authorized and directed to conduct the affairs of the Trust and to
operate the Trust so that the Trust will not be deemed to be an "investment
company" required to be registered under the 1940 Act, or fail to be classified
as a grantor trust for United States Federal income tax purposes and so that the
Debentures will be treated as indebtedness of the Depositor for United States
Federal income tax purposes. In this connection, the Depositor and the
Administrative Agents are authorized to take any action, not inconsistent with
applicable law, the Certificate of Trust or this Trust Agreement, that each 

                                       13
<PAGE>
 
of the Depositor and any Administrative Agent determines in its discretion to be
necessary or desirable for such purposes, as long as such action does not
adversely affect in any material respect the interests of the holders of the
Capital Securities.

     Section 2.8. Assets of Trust.

     The assets of the Trust shall consist of the Trust Property.

     Section 2.9. Title to Trust Property.

     Legal title to all Trust Property shall be vested at all times in the
Property Trustee (in its capacity as such) and shall be held and administered by
the Property Trustee for the benefit of the Trust and the Securityholders in
accordance with this Trust Agreement.


                                 ARTICLE III.

                                Payment Account

     Section 3.1. Payment Account.

     (a) On or prior to the Closing Date, the Property Trustee shall establish
the Payment Account. The Property Trustee and any agent of the Property Trustee
shall have exclusive control and sole right of withdrawal with respect to the
Payment Account for the purpose of making deposits in and withdrawals from the
Payment Account in accordance with this Trust Agreement. All monies and other
property deposited or held from time to time in the Payment Account shall be
held by the Property Trustee in the Payment Account for the exclusive benefit of
the Securityholders and for distribution as herein provided, including (and
subject to) any priority of payments provided for herein.

     (b) The Property Trustee shall deposit in the Payment Account, promptly
upon receipt, all payments of principal of or interest on, and any other
payments or proceeds with respect to, the Debentures. Amounts held in the
Payment Account shall not be invested by the Property Trustee pending
distribution thereof.


                                  ARTICLE IV.

                           Distributions; Redemption

     Section 4.1. Distributions.

     (a) The Trust Securities represent undivided beneficial interests in the
Trust Property, and, subject to Section 4.3, Distributions (including of
Additional Amounts, if any, and Additional Distributions, if any) (the
"Distributions") will be made on the Trust Securities at the rate and on the
dates that payments of interest (including of Additional Interest, as defined in
the Indenture and of Special Interest, as defined in the Capital Securities
Exchange and Registration Rights Agreement) are made on the Debentures.
Accordingly:

               (i) Distributions on the Trust Securities shall be cumulative,
     and will accumulate whether or not there are funds of the Trust available
     for the payment of Distributions. Distributions shall accumulate from
     November 15, 1996, and, except in the event (and to the extent) that the
     Depositor exercises its right to defer the payment of interest on the
     Debentures pursuant to the Indenture, shall be payable semi-annually in

                                       14
<PAGE>
 
     arrears on May 15 and November 15 of each year, commencing on May 15, 1997.
     If any date on which a Distribution is otherwise payable on the Trust
     Securities is not a Business Day, then the payment of such Distribution
     shall be made on the next succeeding day that is a Business Day (and
     without any interest or other payment in respect of any such delay) except
     that, if such Business Day is in the next succeeding calendar year, payment
     of such Distribution shall be made on the immediately preceding Business
     Day, in each case with the same force and effect as if made on such date
     (each date on which distributions are payable in accordance with this
     Section 4.1(a), a "Distribution Date").

               (ii) Assuming payments of interest on the Debentures are made
     when due and assuming compliance by the Depositor and the Trust with their
     obligations under the Capital Securities Exchange and Registration Rights
     Agreement (and before giving effect to Additional Amounts, if applicable,
     or to Additional Distributions, if applicable), Distributions on the Trust
     Securities shall be payable at a rate of 8.09% per annum of the Liquidation
     Amount of the Trust Securities. The amount of Distributions payable for any
     full period shall be computed on the basis of a 360-day year of twelve 30-
     day months. The amount of Distributions for any partial period shall be
     computed on the basis of the number of days elapsed in a 360-day year of
     twelve 30-day months. The amount of Distributions payable for any period
     shall include the Additional Amounts, if any and the Additional
     Distributions, if any.

               (iii) Distributions on the Trust Securities shall be made by the
     Property Trustee from the Payment Account and shall be payable on each
     Distribution Date only to the extent that the Trust has funds then on hand
     and available in the Payment Account for the payment of such Distributions.

     (b) Distributions on the Trust Securities with respect to a Distribution
Date shall be payable to the Holders thereof as they appear on the Securities
Register for the Trust Securities on the relevant record date, which shall be
April 30 immediately preceding a Distribution Date which is on May 15, and
October 31 immediately preceding a Distribution Date which is on November 15.

     Section 4.2. Redemption.

     (a) On each Debenture Prepayment Date and on the stated maturity of the
Debentures, the Trust will be required to redeem, subject to Section 4.3, all
Trust Securities at the Redemption Price.

     (b) Notice of redemption shall be given by the Property Trustee by first-
class mail, postage prepaid, mailed not less than 30 nor more than 60 days prior
to the Redemption Date to each Holder of Trust Securities at such Holder's
address appearing in the Security Register. All notices of redemption shall
state:

               (i) the Redemption Date;

               (ii) the Redemption Price;

               (iii) the CUSIP number and;

               (iv) that on the Redemption Date the Redemption Price will become
     due and payable upon each such Trust Security and that Distributions
     thereon will cease to accrue on and after said date.

     (c) The Trust Securities shall be redeemed, if at all, at the applicable
Redemption Price with the proceeds from the contemporaneous prepayment or
repayment of Debentures. Redemptions of the Trust Securities shall be made and
the applicable Redemption Price shall be payable only to the extent that the
Trust has funds then on hand and available in the Payment Account for the
payment of such applicable Redemption Price.

                                       15
<PAGE>
 
     (d) If the Property Trustee gives a notice of redemption in respect of the
Capital Securities, then, by 12:00 noon, New York City time, on the Redemption
Date, subject to Section 4.2(c), with respect to Capital Securities held in 
book-entry form, the Property Trustee will irrevocably deposit with the Clearing
Agency funds sufficient to pay the applicable Redemption Price and will give
such Clearing Agency irrevocable instructions and authority to pay the
Redemption Price to the holders thereof. With respect to the Capital Securities
held in certificated form, the Property Trustee, subject to Section 4.2(c), will
irrevocably deposit with the Paying Agent funds sufficient to pay the applicable
Redemption Price and will give the Paying Agent irrevocable instructions and
authority to pay the Redemption Price to the Holders thereof upon surrender of
their Capital Securities Certificates. Notwithstanding the foregoing,
Distributions payable on or prior to the Redemption Date shall be payable to the
Holders of such Trust Securities as they appear on the Register for the Trust
Securities on the relevant record dates for the related Distribution Dates. If
notice of redemption shall have been given and funds deposited as required, then
upon the date of such deposit, all rights of Securityholders holding Trust
Securities will cease, except the right of such Securityholders to receive the
applicable Redemption Price and any Distribution payable on or prior to the
Redemption Date, but without interest, and such Trust Securities will cease to
be outstanding. In the event that any date fixed for redemption is not a
Business Day, then payment of the applicable Redemption Price payable on such
date will be made on the next succeeding day that is a Business Day (and without
any interest or other payment in respect of any such delay), except that, if
such Business Day falls in the next calendar year, such payment will be made on
the immediately preceding Business Day, in each case, with the same force and
effect as if made on such date. In the event that payment of the applicable
Redemption Price is improperly withheld or refused and not paid either by the
Trust or by the Depositor pursuant to the Guarantee, Distributions on such Trust
Securities will continue to accrue, at the then applicable rate, from the
Redemption Date originally established by the Trust to the date such Redemption
Price is actually paid, in which case the actual payment date will be the date
fixed for redemption for purposes of calculating the applicable Redemption
Price.

     (e) Payment of the Redemption Price on the Trust Securities shall be
made to the record holders thereof as they appear on the Securities Register for
the Trust Securities on the relevant record date, which shall be the date
fifteen days prior to the relevant Redemption Date.

     Section 4.3. Subordination of Common Securities.

     (a) Payment of Distributions (including Additional Amounts, if applicable,
and Additional Distributions, if applicable) on, and the Redemption Price of,
the Trust Securities, as applicable, shall be made pro rata among the Common
Securities and the Capital Securities based on the Liquidation Amount thereof;
provided, however, that if on any Distribution Date or Redemption Date any Event
of Default resulting from a Debenture Event of Default shall have occurred and
be continuing, no payment of any Distribution (including Additional Amounts, if
applicable, and Additional Distributions, if applicable) on, or Redemption Price
of, any Common Security, and no other payment on account of the redemption,
liquidation or other acquisition of Common Securities, shall be made unless
payment in full in cash of all accumulated and unpaid Distributions (including
Additional Amounts, if applicable) on all Outstanding Capital Securities for all
Distribution periods terminating on or prior thereto, or in the case of payment
of the Redemption Price the full amount of such Redemption Price on all
Outstanding Capital Securities, shall have been made or provided for, and all
funds immediately available to the Property Trustee shall first be applied to
the payment in full in cash of all Distributions (including Additional Amounts,
if applicable, and Additional Distributions, if applicable) on, or the
Redemption Price of, Capital Securities then due and payable.

     (b) In the case of the occurrence of any Event of Default resulting from
any Debenture Event of Default, the Holder of Common Securities will be deemed
to have waived any right to act with respect to any such Event of Default under
this Trust Agreement until the effect of all such Events of Default with respect
to the Capital Securities have been cured, waived or otherwise eliminated. Until
any such Event of Default under this Trust Agreement with respect to the Capital
Securities has been so cured, waived or otherwise eliminated, the Property
Trustee shall act solely on behalf of the Holders of the Capital Securities and
not the Holder of the Common 

                                       16
<PAGE>
 
Securities, and only the Holders of the Capital Securities will have the right
to direct the Property Trustee to act on their behalf.

     Section 4.4. Payment Procedures.

     Payments of Distributions (including Additional Amounts, if applicable, and
Additional Distributions, if applicable) in respect of the Capital Securities
shall be made by check mailed to the address of the Person entitled thereto as
such address shall appear on the Securities Register or, if the Capital
Securities are held by a Clearing Agency, such Distributions shall be made to
the Clearing Agency in immediately available funds, which shall credit the
relevant Persons' accounts at such Clearing Agency on the applicable
Distribution Dates. Payments in respect of the Common Securities shall be made
in such manner as shall be mutually agreed between the Property Trustee and the
Common Securityholder.

     Section 4.5. Tax Returns and Reports.

     The Administrative Agents shall prepare (or cause to be prepared), at the
Depositor's expense, and file all United States Federal, state and local tax and
information returns and reports required to be filed by or in respect of the
Trust. In this regard, the Administrative Agents shall (a) prepare and file (or
cause to be prepared and filed) the appropriate Internal Revenue Service Form
required to be filed in respect of the Trust in each taxable year of the Trust
and (b) prepare and furnish (or cause to be prepared and furnished) to each
Securityholder the appropriate Internal Revenue Service form required to be
provided on such form together with an annual financial statement of the Trust.
The Administrative Agents shall provide the Depositor and the Property Trustee
with a copy of all such returns and reports promptly after such filing or
furnishing. The Trustees shall comply with United States Federal withholding and
backup withholding tax laws and information reporting requirements with respect
to any payments to Securityholders under the Trust Securities.

     Section 4.6. Payment of Taxes, Duties, Etc. of the Trust.

     Upon receipt under the Debentures of Additional Sums, the Property Trustee
shall promptly pay any taxes, duties or governmental charges of whatsoever
nature (other than withholding taxes) imposed on the Trust by the United States
or any other taxing authority.

     Section 4.7. Payments under Indenture or Pursuant to Direct Actions.

     Notwithstanding any payments made to a Holder of Capital Securities (and
any Owner with respect thereto) pursuant to Section 5.8 of the Indenture or
Section 5.14 of this Trust Agreement, the Depositor shall remain obligated to
pay the principal of or interest on the Debentures, and the Depositor shall be
subrogated to the rights of the Holder (and Owner) of such Capital Securities
with respect to payments on the Capital Securities to the extent of any payments
made by the Depositor to such Holder (and Owner) pursuant to either of such
Sections.

                                  ARTICLE V.

                         Trust Securities Certificates

     Section 5.1. Initial Ownership.

     Upon the formation of the Trust and the contribution by the Depositor
pursuant to Section 2.3 and until the issuance of the Trust Securities, and at
any time during which no Trust Securities are outstanding, the Depositor shall
be the sole beneficial owner of the Trust.

                                       17
<PAGE>
 
     Section 5.2. The Trust Securities Certificates.

     The Capital Securities Certificates shall be issued, and may be
transferred, only in blocks having not less than $100,000 Liquidation Amount
(100 Capital Securities), and the Common Securities Certificates shall be issued
in such denominations as may be necessary or appropriate. The Trust Securities
Certificates shall be executed on behalf of the Trust by manual signature of at
least one Administrative Agent. Trust Securities Certificates bearing the manual
signatures of individuals who were, at the time when such signatures shall have
been affixed, authorized to sign on behalf of the Trust, shall be validly issued
and entitled to the benefits of this Trust Agreement, notwithstanding that such
individuals or any of them shall have ceased to be so authorized prior to the
delivery of such Trust Securities Certificates or did not hold such offices at
the date of delivery of such Trust Securities Certificates. A transferee of a
Trust Securities Certificate shall become a Securityholder, and shall be
entitled to the rights and subject to the obligations of a Securityholder
hereunder, upon due registration of such Trust Securities Certificate in such
transferee's name pursuant to Sections 5.4, 5.11 and 5.13; provided that any
transfer, sale or other disposition of Capital Securities in a block having a
Liquidation Amount of less than $100,000 shall be deemed to be void and of no
legal effect whatsoever.

     Section 5.3. Execution and Delivery of Trust Securities Certificates.

     At the Closing Date, the Administrative Agents shall cause Trust Securities
Certificates, in an aggregate Liquidation Amount as provided in Sections 2.4 and
2.5, to be executed on behalf of the Trust and delivered to or upon the written
order of the Depositor, signed by its chairman of the board, its president, any
executive vice president or any vice president, treasurer or assistant treasurer
or controller without further corporate action by the Depositor, in authorized
denominations.

     Section 5.4. Registration of Transfer and Exchange of Capital Securities.

     (a) The Depositor shall keep or cause to be kept, at the office or agency
maintained pursuant to Section 5.8, a register or registers for the purpose of
registering Trust Securities and transfers and exchanges of Capital Securities
(the "Securities Register") in which, the registrar designated by the Depositor
(the "Securities Registrar"), subject to such reasonable regulations as it may
prescribe, shall provide for the registration of Capital Securities and Common
Securities (subject to Section 5.4(a)(1) in the case of Capital Securities and
Section 5.4(b) in the case of Private Capital Securities and Section 5.10 in the
case of the Common Securities) and registration of transfers and exchanges of
Capital Securities as herein provided. The Bank shall be the initial Securities
Registrar.

     Upon surrender for registration of transfer of any Capital Securities
Certificate at the office or agency maintained pursuant to Section 5.8 and
subject to compliance with Section 5.4(a)(1) in the case of Capital Securities
and Section 5.4(b) in the case of Private Capital Securities, the Administrative
Agents or any one of them shall execute and deliver, in the name of the
designated transferee or transferees, one or more new Capital Securities
Certificates in authorized denominations of a like aggregate Liquidation Amount
dated the date of execution by such Administrative Agent or Agents.

     The Securities Registrar shall not be required to register the transfer of
any Capital Securities that have been called for redemption. At the option of a
Holder, Capital Securities may be exchanged for other Capital Securities in
authorized denominations of the same class and of a like aggregate Liquidation
Amount upon surrender of the Capital Securities Certificates to be exchanged at
the office or agency maintained pursuant to Section 5.8.

     Every Capital Securities Certificate presented or surrendered for
registration of transfer or exchange shall be accompanied by a written
instrument of transfer in form satisfactory to an Administrative Agent and the
Securities Registrar duly executed by the Holder or his attorney duly authorized
in writing. Each Capital Securities Certificate 

                                       18
<PAGE>
 
surrendered for registration of transfer or exchange shall be cancelled and
subsequently disposed of by an Administrative Agent in accordance with such
Person's customary practice.

     No service charge shall be made for any registration of transfer or
exchange of Capital Securities, but the Securities Registrar may require payment
of a sum sufficient to cover any tax or governmental charge that may be imposed
in connection with any transfer or exchange of Capital Securities.

               (1)  The Capital Securities will be issued, and may be
transferred, only in blocks having a Liquidation Amount of not less than
$100,000 (100 Capital Securities). Any transfer, sale or other disposition of
Capital Securities in a block having a Liquidation Amount of less than $100,000
shall be deemed to be void and of no legal effect whatsoever. Any such
transferee shall be deemed not to be the holder of such Capital Securities for
any purpose, including but not limited to the receipt of Distributions on such
Capital Securities, and such transferee shall be deemed to have no interest
whatsoever in such Capital Securities.

     (b)(1) In addition to the restrictions on transfer set forth in Sections
5.4(a)(1) and 5.4(b)(2), Beneficial ownership of every Private Capital Security
is subject to the restrictions on transfer imposed by the Securities Act and
rules and regulations promulgated by the Commission thereunder and each
certificate representing Private Capital Securities shall bear restrictive
legends (the "Securities Act Legends") substantially in the form attached as
Exhibit H hereto, unless such restrictions on transfer shall be terminated in
accordance with paragraph (b)(2) below. The Holder of each Private Capital
Security, by such Holder's acceptance thereof, agrees to be bound by such
restrictions on transfer.

     (b)(2) The restrictions imposed by the Securities Act and this paragraph
(b)(2) upon the transferability of any particular Private Capital Security shall
cease and terminate upon delivery by at least one Administrative Agent on behalf
of the Trust to the Property Trustee of an Officers' Certificate and Opinion of
Counsel stating that such Private Capital Security has been sold pursuant to an
effective registration statement under the Securities Act, exchanged for a
corresponding Liquidation Amount of the Exchange Capital Securities pursuant to
an effective registration statement under the Securities Act, or transferred in
compliance with Rule 144 under the Securities Act (or any successor provision
thereto). Any Private Capital Security as to which such Administrative Agent has
delivered to the Property Trustee an Officers' Certificate and Opinion of
Counsel that such restrictions on transfer shall have expired in accordance with
their terms or shall have terminated may, upon surrender of such Private Capital
Security for exchange to the Security Registrar or any Transfer Agent in
accordance with the provisions of this paragraph (b)(2) be exchanged for a new
Capital Security, of like tenor and aggregate Liquidation Amount, which shall
not bear the Securities Act Legends. The Administrative Agent shall inform the
Property Trustee in writing of the effective date of any registration statement
registering the Private Capital Securities or the Exchange Capital Securities
under the Securities Act. The Property Trustee shall not be liable for any
action taken or omitted to be taken by it in good faith in accordance with the
aforementioned registration statement.

     As used in paragraph (a)(1) and in paragraphs (1) and (2) of this paragraph
(b), the term "transfer" encompasses any sale, pledge, transfer or other
disposition of any Private Capital Security.

     Section 5.5. Mutilated, Destroyed, Lost or Stolen Trust Securities
Certificates.

     If (a) any mutilated Trust Securities Certificate shall be surrendered to
the Securities Registrar, or if the Securities Registrar shall receive evidence
to its satisfaction of the destruction, loss or theft of any Trust Securities
Certificate and (b) there shall be delivered to the Securities Registrar and the
Administrative Agents such security or indemnity as may be required by them to
save each of them harmless, then in the absence of notice that such Trust
Securities Certificate shall have been acquired by a bona fide purchaser, the
Administrative Agents, or any one of them, on behalf of the Trust shall execute
and make available for delivery, in exchange for or in lieu of any such
mutilated, destroyed, lost or stolen Trust Securities Certificate, a new Trust
Securities Certificate of like class, tenor 

                                       19
<PAGE>
 
and denomination. In connection with the issuance of any new Trust Securities
Certificate under this Section 5.5, the Administrative Agents or the Securities
Registrar may require the payment of a sum sufficient to cover any tax or other
governmental charge that may be imposed in connection therewith. Any duplicate
Trust Securities Certificate issued pursuant to this Section shall constitute
conclusive evidence of an undivided beneficial interest in the assets of the
Trust, as if originally issued, whether or not the lost, stolen or destroyed
Trust Securities Certificate shall be found at any time.

     Section 5.6. Persons Deemed Securityholders.

     The Trustees or the Securities Registrar shall treat the Person in whose
name any Trust Securities shall be registered in the Securities Register as the
owner of such Trust Securities for the purpose of receiving Distributions and
for all other purposes whatsoever, and neither the Trustees nor the Securities
Registrar shall be bound by any notice to the contrary.

     Section 5.7. Access to List of Securityholders' Names and Addresses.

     Each Holder and each Owner shall be deemed to have agreed not to hold the
Depositor, the Property Trustee or the Administrative Agents accountable by
reason of the disclosure of its name and address, regardless of the source from
which such information was derived.

     Section 5.8. Maintenance of Office or Agency.

     The Administrative Agents shall maintain an office or offices or agency or
agencies where Capital Securities Certificates may be surrendered for
registration of transfer or exchange and where notices and demands to or upon
the Trustees in respect of the Trust Securities Certificates may be served. The
Administrative Agents initially designate First Bank System, Inc., 601 Second
Avenue South, Minneapolis, Minnesota 55402 Attn: Treasurer, as its principal
corporate trust office for such purposes. The Administrative Agents shall give
prompt written notice to the Depositor and to the Securityholders of any change
in the location of the Securities Register or any such office or agency.

     Section 5.9. Appointment of Paying Agent.

     The Paying Agent shall make Distributions to Securityholders from the
Payment Account and shall report the amounts of such Distributions to the
Property Trustee and the Administrative Agents. Any Paying Agent shall have the
revocable power to withdraw funds from the Payment Account for the purpose of
making the Distributions referred to above. The Administrative Agents may revoke
such power and remove the Paying Agent if such Agents determine in their sole
discretion that the Paying Agent shall have failed to perform its obligations
under this Trust Agreement in any material respect. The Paying Agent shall
initially be the Bank, and any co-paying agent chosen by the Bank, and
acceptable to the Administrative Agents and the Depositor. Any Person acting as
Paying Agent shall be permitted to resign as Paying Agent upon 30 days' written
notice to the Administrative Agents, the Property Trustee and the Depositor. In
the event that the Bank shall no longer be the Paying Agent or a successor
Paying Agent shall resign or its authority to act be revoked, the Administrative
Agents shall appoint a successor that is acceptable to the Property Trustee and
the Depositor to act as Paying Agent (which shall be a bank or trust company).
The Administrative Agents shall cause such successor Paying Agent or any
additional Paying Agent appointed by the Administrative Agents to execute and
deliver to the Trustees an instrument in which such successor Paying Agent or
additional Paying Agent shall agree with the Trustees that as Paying Agent, such
successor Paying Agent or additional Paying Agent will hold all sums, if any,
held by it for payment to the Securityholders in trust for the benefit of the
Securityholders entitled thereto until such sums shall be paid to such
Securityholders. The Paying Agent shall return all unclaimed funds to the
Property Trustee and upon removal of a Paying Agent such Paying Agent shall also
return all funds in its possession to the Property Trustee. The provisions of
Sections 8.1, 

                                       20
<PAGE>
 
8.3 and 8.6 herein shall apply to the Bank also in its role as Paying Agent, for
so long as the Bank shall act as Paying Agent and, to the extent applicable, to
any other paying agent appointed hereunder. Any reference in this Agreement to
the Paying Agent shall include any co-paying agent unless the context requires
otherwise.

     Section 5.10. Ownership of Common Securities by Depositor.

     At the Closing Date, the Depositor shall acquire and retain beneficial and
record ownership of the Common Securities. To the fullest extent permitted by
law, other than a transfer in connection with a consolidation or merger of the
Depositor into another corporation, or any conveyance, transfer or lease by the
Depositor of its properties and assets substantially as an entirety to any
Person, pursuant to Section 8.1 of the Indenture, any attempted transfer of the
Common Securities shall be void. The Administrative Agents shall cause each
Common Securities Certificate issued to the Depositor to contain a legend
stating "THIS CERTIFICATE IS NOT TRANSFERABLE".

     Section 5.11.  Book Entry Interests.

     (a)  So long as Capital Securities are eligible for book-entry settlement
with the Clearing Agency or unless otherwise required by law, all Capital
Securities that are so eligible will be represented by one or more fully
registered Capital Security Certificates (each a "Global Certificate") in global
form to be delivered to the Clearing Agency, by, or on behalf of, the Trust.
Such Global Certificates shall initially be registered on the books and records
of the Trust in the name of Cede & Co., the nominee of The Depository Trust
Company, and no Owner will receive a definitive Capital Security Certificate
representing such Owner's interests in such Global Certificates, except as
provided in Section 5.11(e) below. The transfer and exchange of beneficial
interests in any such Capital Security in global form shall be effected through
the Clearing Agency in accordance with this Trust Agreement and the procedures
of the Clearing Agency therefor.

     (b)  Except as provided in subparagraph (e) of this Section 5.11,
beneficial owners of a Capital Security in global form shall not be entitled to
have certificates registered in their names, will not receive or be entitled to
receive physical delivery of certificates in definitive form and will not be
considered Holders of such Capital Security in global form.

     (c)  So long as the Capital Securities are eligible for book-entry
settlement, or unless otherwise required by law, upon any transfer of a
definitive Capital Security to a QIB in accordance with Rule 144A or to a Non-
U.S. Person in accordance with Regulation S, unless otherwise requested by the
transferor, and upon receipt of the definitive Capital Security or Capital
Securities being so transferred, together with a certification from the
transferor that the transfer is being made in compliance with Rule 144A (or
other evidence satisfactory to the Property Trustee on behalf of the Trust), the
Property Trustee on behalf of the Trust shall make an endorsement on the Book-
Entry Capital Securities Certificate to reflect an increase in the number of
Capital Securities represented by such Book-Entry Capital Securities Certificate
and the Property Trustee on behalf of the Trust shall cancel such definitive
Capital Security or Capital Securities in accordance with the standing
instructions and procedures of the Clearing Agency, the number of Capital
Securities represented by such Capital Security in global form to be increased
accordingly; provided that no definitive Capital Security, or portion thereof,
in respect of which the Trust or an Affiliate of the Trust held any beneficial
interest shall be included in such Capital Security in global form until such
definitive Capital Security is freely tradeable in accordance with Rule 144(k);
provided further that the Trust shall issue Capital Securities in definitive
form upon any transfer of a beneficial interest in the Capital Security in
global form to the Depositor or any Affiliate of the Depositor.

     (d)  Any Global Certificate may be endorsed with or have incorporated in
the text thereof such legends or recitals or changes not inconsistent with the
provisions of this Trust Agreement as may be required by the Clearing Agency, by
any national securities exchange or by the National Association of Securities
Dealers, Inc. in order for the Capital Securities to be tradeable on the PORTAL
Market or as may be required for the Capital Securities to be tradeable on any
other market developed for trading of securities pursuant to Rule 144A or
required to comply with any applicable law or any regulation thereunder or with
the rules and regulations of any securities exchange upon which the Capital
Securities may be listed or traded or to conform with any usage with respect
thereto, or to indicate any special limitations or restrictions to which any
particular Capital Securities are subject.

                                       21
<PAGE>
 
     (e)  Notwithstanding any other provisions of this Trust Agreement (other
than the provisions set forth in this Section 5.11(e)), a Capital Security in
global form may not be exchanged in whole or in part for Capital Securities
registered, and no transfer of a Capital Security in global form may be
registered, in the name of any person other than the Clearing Agency or a
nominee thereof unless (i) such Clearing Agency (A) has notified the Property
Trustee that it is unwilling or unable to continue as Clearing Agency for such
global Capital Security or (B) has ceased to be a clearing agency registered as
such under the Exchange Act, (ii) there shall have occurred and be continuing an
Event of Default, or any event which after notice or lapse of time or both would
be an Event of Default under the Trust Agreement, with respect to such global
Capital Security, or (iii) pursuant to the following sentence. Subject to any
other applicable provisions hereof, all or any portion of a global Capital
Security may be exchanged for a Capital Security that has a like aggregate
liquidation amount and is not a global Capital Security, upon 20 days' prior
request made by the Clearing Agency or its authorized representative to the
Property Trustee. Following exchange of a global Capital Security, or a portion
thereof, for a definitive Capital Security, no such definitive Capital Security,
or portion thereof, shall be included in any Global Certificate except pursuant
to Section 5.11(c). Unless and until Definitive Capital Securities Certificates
have been issued to Owners pursuant to Section 5.13:

               (i) the provisions of this Section 5.11 shall be in full force
     and effect;

               (ii) the Securities Registrar and the Trustees shall be entitled
     to deal with the Clearing Agency for all purposes of this Trust Agreement
     relating to the Book-Entry Capital Securities Certificates (including the
     payment of the Liquidation Amount of and Distributions on the Capital
     Securities evidenced by Book-Entry Capital Securities Certificates and the
     giving of instructions or directions to Owners of Capital Securities
     evidenced by Book-Entry Capital Securities Certificates) as the sole Holder
     of Capital Securities evidenced by Book-Entry Capital Securities
     Certificates and shall have no obligations to the Owners thereof;

               (iii) to the extent that the provisions of this Section 5.11
     conflict with any other provisions of this Trust Agreement, the provisions
     of this Section 5.11 shall control; and

               (iv) the rights of the Owners of the Book-Entry Capital
     Securities Certificates shall be exercised only through the Clearing Agency
     and shall be limited to those established by law and agreements between
     such Owners and the Clearing Agency and/or the Clearing Agency
     Participants. Pursuant to the Certificate Depository Agreement, unless and
     until Definitive Capital Securities Certificates are issued pursuant to
     this Section 5.11 or Section 5.13, the initial Clearing Agency will make
     book-entry transfers among the Clearing Agency Participants and receive and
     transmit payments on the Capital Securities to such Clearing Agency
     Participants.

     (b) Private Capital Securities initially purchased by Institutional
Accredited Investors will be issued only in certificated form.

     (c) The Private Capital Securities issued pursuant to Regulation S will be
represented by one or more Global Capital Securities in definitive, fully
registered form registered in the name of a nominee of DTC and deposited with
the Trustee, for the accounts of Euroclear and CEDEL. Until and including the
40th day after the latest of the commencement of the offering and the Closing
Date, beneficial interests in the Regulation S Capital Security may be held only
through Euroclear or CEDEL, unless delivery is made through the Restricted
Global Capital Security in accordance with certain certification requirements.

     (d) Exchange Capital Securities will be represented by one or more global
certificates registered in the name of Cede & Co. as the nominee of DTC.
Beneficial interests in the Exchange Capital Securities will be shown on, and
transfers thereof will be effected only through, records maintained by
participants in DTC.

     (e) A single Common Securities Certificate representing the Common
Securities shall be issued to the Depositor in the form of a definitive Common
Securities Certificate.

                                       22
<PAGE>
 
     Section 5.12. Notices to Clearing Agency.
     
     To the extent that a notice or other communication to the Owners is
required under this Trust Agreement, unless and until Definitive Capital
Securities Certificates shall have been issued to Owners pursuant to Section
5.13, the Trustees shall give all such notices and communications specified
herein to be given to Owners to the Clearing Agency, and shall have no
obligations to the Owners.

     Section 5.13. Procedures for Issuance of Definitive Capital Securities
Certificates.

     Upon surrender to the Administrative Agents of the Book Entry Capital
Securities Certificates by the Clearing Agency, accompanied by registration
instructions, the Administrative Agents, or any one of them, shall execute the
Definitive Capital Securities Certificates in accordance with the instructions
of the Clearing Agency. Neither the Securities Registrar nor the Trustees shall
be liable for any delay in delivery of such instructions and may conclusively
rely on, and shall be protected in relying on, such instructions. Upon the
issuance of Definitive Capital Securities Certificates, the Trustees shall
recognize the Holders in whose names Definitive Capital Securities Certificates
are registered as Securityholders. The Definitive Capital Securities
Certificates shall be printed, lithographed or engraved or may be produced in
any other manner as is reasonably acceptable to the Administrative Agents, as
evidenced by the execution thereof by the Administrative Agents or any one of
them.

     Section 5.14. Rights of Securityholders.

     (a) The legal title to the Trust Property is vested exclusively in the
Property Trustee (in its capacity as such) in accordance with Section 2.9, and
the Securityholders shall not have any right or title therein other than the
undivided beneficial interest in the assets of the Trust conferred by their
Trust Securities and they shall have no right to call for any partition or
division of property, profits or rights of the Trust except as described below.
The Trust Securities shall be personal property giving only the rights
specifically set forth therein and in this Trust Agreement. The Trust Securities
shall have no preemptive or similar rights and when issued and delivered to
Securityholders against payment of the purchase price therefor will be fully
paid and nonassessable by the Trust. The Holders of the Trust Securities, in
their capacities as such, shall be entitled to the same limitation of personal
liability extended to stockholders of private corporations for profit organized
under the General Corporation Law of the State of Delaware.

     (b) For so long as any Capital Securities remain Outstanding, if, upon
a Debenture Event of Default, the Debenture Trustee fails or the holders of not
less than 25% in principal amount of the outstanding Debentures fail to declare
the principal of all of the Debentures to be immediately due and payable, the
Holders of at least 25% in Liquidation Amount of the Capital Securities then
Outstanding shall have such right by a notice in writing to the Depositor and
the Debenture Trustee; and upon any such declaration such principal amount of
and the accrued interest on all of the Debentures shall become immediately due
and payable, provided that the payment of principal and interest on such
Debentures shall remain subordinated to the extent provided in the Indenture.

     At any time after such a declaration of acceleration with respect to the
Debentures has been made and before a judgment or decree for payment of the
money due has been obtained by the Debenture Trustee as in the Indenture
provided, the Holders of a majority in Liquidation Amount of the Capital
Securities, by written notice to the Property Trustee, the Depositor and the
Debenture Trustee, may rescind and annul such declaration and its consequences
if:

               (i) the Depositor has paid or deposited with the Debenture
     Trustee a sum sufficient to pay

                         (A) all overdue installments of interest (including any
               Additional Interest (as defined in the Indenture)) on all of the
               Debentures,

                         (B) the principal of (and premium, if any, on) any
               Debentures which have become due otherwise than by such
               declaration of acceleration and interest thereon at the rate
               borne by the Debentures, and

                                       23
<PAGE>
 
                         (C) all sums paid or advanced by the Debenture Trustee
               under the Indenture and the reasonable compensation, expenses,
               disbursements and advances of the Debenture Trustee and the
               Property Trustee, their agents and counsel; and

               (ii) all Events of Default with respect to the Debentures, other
     than the non-payment of the principal of the Debentures which has become
     due solely by such acceleration, have been cured or waived as provided in
     Section 5.13 of the Indenture.

     The holders of a majority in aggregate Liquidation Amount of the Capital
Securities may, on behalf of the Holders of all the Capital Securities, waive
any past default under the Indenture, except a default in the payment of
principal or interest (unless such default has been cured and a sum sufficient
to pay all matured installments of interest and principal due otherwise than by
acceleration has been deposited with the Debenture Trustee) or a default in
respect of a covenant or provision which under the Indenture cannot be modified
or amended without the consent of the holder of each outstanding Debenture. No
such rescission shall affect any subsequent default or impair any right
consequent thereon.

     Upon receipt by the Property Trustee of written notice declaring such an
acceleration, or rescission and annulment thereof, by Holders of the Capital
Securities all or part of which is represented by Book-Entry Capital Securities
Certificates, a record date shall be established for determining Holders of
Outstanding Capital Securities entitled to join in such notice, which record
date shall be at the close of business on the day the Property Trustee receives
such notice. The Holders on such record date, or their duly designated proxies,
and only such Persons, shall be entitled to join in such notice, whether or not
such Holders remain Holders after such record date; provided, that, unless such
declaration of acceleration, or rescission and annulment, as the case may be,
shall have become effective by virtue of the requisite percentage having joined
in such notice prior to the day which is 90 days after such record date, such
notice of declaration of acceleration, or rescission and annulment, as the case
may be, shall automatically and without further action by any Holder be canceled
and of no further effect. Nothing in this paragraph shall prevent a Holder, or a
proxy of a Holder, from giving, after expiration of such 90-day period, a new
written notice of declaration of acceleration, or rescission and annulment
thereof, as the case may be, that is identical to a written notice which has
been canceled pursuant to the proviso to the preceding sentence, in which event
a new record date shall be established pursuant to the provisions of this
Section 5.14(b).

     (c) For so long as any Capital Securities remain Outstanding, to the
fullest extent permitted by law and subject to the terms of this Trust Agreement
and the Indenture, upon a Debenture Event of Default specified in Section 5.1(1)
or 5.1(2) of the Indenture, any Holder of Capital Securities shall have the
right to institute a proceeding directly against the Depositor, pursuant to
Section 5.8 of the Indenture, for enforcement of payment to such Holder of the
principal amount of or interest on Debentures having a principal amount equal to
the Liquidation Amount of the Capital Securities of such Holder (a "Direct
Action"). Except as set forth in Section 5.14(b) and this Section 5.14(c), the
Holders of Capital Securities shall have no right to exercise directly any right
or remedy available to the holders of, or in respect of, the Debentures.

                                  ARTICLE VI.

                   Acts of Securityholders; Meetings; Voting

     Section 6.1. Limitations on Voting Rights.

     (a) Except as provided in this Section, in Sections 5.14, 8.10 and 10.2 and
in the Indenture and as otherwise required by law, no Holder of Capital
Securities shall have any right to vote or in any manner otherwise control the
administration, operation and management of the Trust or the obligations of the
parties hereto, nor shall anything herein set forth, or contained in the terms
of the Trust Securities, be construed so as to constitute the Securityholders
from time to time as partners or members of an association.

                                       24
<PAGE>
 
     (b) So long as any Debentures are held by the Property Trustee, the
Trustees shall not (i) direct the time, method and place of conducting any
proceeding for any remedy available to the Debenture Trustee, or executing any
trust or power conferred on the Debenture Trustee with respect to such
Debentures, (ii) waive any past default which is waivable under Section 5.13 of
the Indenture, (iii) exercise any right to rescind or annul a declaration that
the principal of all the Debentures shall be due and payable or (iv) consent to
any amendment, modification or termination of the Indenture or the Debentures,
where such consent shall be required, without, in each case, obtaining the prior
approval of the Holders of at least a majority in Liquidation Amount of all
Outstanding Capital Securities, provided, however, that where a consent under
the Indenture would require the consent of each Holder of Debentures affected
thereby, no such consent shall be given by the Property Trustee without the
prior written consent of each Holder of Capital Securities. The Trustees shall
not revoke any action previously authorized or approved by a vote of the Holders
of Capital Securities, except by a subsequent vote of the Holders of Capital
Securities. The Property Trustee shall notify all Holders of the Capital
Securities of any notice of default received from the Debenture Trustee with
respect to the Debentures. In addition to obtaining the foregoing approvals of
the Holders of the Capital Securities, prior to taking any of the foregoing
actions, the Trustees shall, at the expense of the Depositor, obtain an Opinion
of Counsel experienced in such matters to the effect that such action shall not
cause the Trust to fail to be classified as a grantor trust for United States
Federal income tax purposes.

     (c) If any proposed amendment to the Trust Agreement provides for, or the
Trustees otherwise propose to effect, (i) any action that would adversely affect
in any material respect the powers, preferences or special rights of the Capital
Securities, whether by way of amendment to the Trust Agreement or otherwise, or
(ii) the dissolution, winding-up or termination of the Trust, other than
pursuant to the terms of this Trust Agreement, then the Holders of Outstanding
Capital Securities as a class will be entitled to vote on such amendment or
proposal and such amendment or proposal shall not be effective except with the
approval of the Holders of at least a majority in Liquidation Amount of the
Outstanding Capital Securities. Notwithstanding any other provision of this
Trust Agreement, no amendment to this Trust Agreement may be made if, as a
result of such amendment, it would cause the Trust to fail to be classified as a
grantor trust for United States Federal income tax purposes.

     Section 6.2. Notice of Meetings.

     Notice of all meetings of the Capital Securityholders, stating the time,
place and purpose of the meeting, shall be given by the Property Trustee
pursuant to Section 10.8 to each Capital Securityholder of record, at his
registered address, at least 15 days and not more than 90 days before the
meeting. At any such meeting, any business properly before the meeting may be so
considered whether or not stated in the notice of the meeting. Any adjourned
meeting may be held as adjourned without further notice.

     Section 6.3. Meetings of Capital Securityholders.

     No annual meeting of Securityholders is required to be held. The
Administrative Agents, however, shall call a meeting of Securityholders to vote
on any matter upon the written request of the Capital Securityholders of record
of 25% of the Capital Securities (based upon their Liquidation Amount) and the
Administrative Agents or the Property Trustee may, at any time in their
discretion, call a meeting of Capital Securityholders to vote on any matters as
to which Capital Securityholders are entitled to vote.

     Capital Securityholders of record of 50% of the Outstanding Capital
Securities (based upon their Liquidation Amount), present in person or by proxy,
shall constitute a quorum at any meeting of Securityholders.

     If a quorum is present at a meeting, an affirmative vote by more than a
majority of the Outstanding Capital Securities (based upon their Liquidation
Amount) held by the Capital Securityholders of record present, either in person
or by proxy, at such meeting shall constitute the action of the Securityholders,
unless this Trust Agreement requires a greater number of affirmative votes.

                                       25
<PAGE>
 
     Section 6.4. Voting Rights.

     Securityholders shall be entitled to one vote for each $1,000 of
Liquidation Amount represented by their Trust Securities in respect of any
matter as to which such Securityholders are entitled to vote.

     Section 6.5. Proxies, Etc.

     At any meeting of Securityholders, any Securityholder entitled to vote
thereat may vote by proxy, provided that no proxy shall be voted at any meeting
unless it shall have been placed on file with the Administrative Agents, or with
such other officer or agent of the Trust as the Administrative Agents may
direct, for verification prior to the time at which such vote shall be taken.
Pursuant to a resolution of the Property Trustee, proxies may be solicited in
the name of the Property Trustee or one or more officers of the Property
Trustee. Only Securityholders of record shall be entitled to vote. When Trust
Securities are held jointly by several persons, any one of them may vote at any
meeting in person or by proxy in respect of such Trust Securities, but if more
than one of them shall be present at such meeting in person or by proxy, and
such joint owners or their proxies so present disagree as to any vote to be
cast, such vote shall not be received in respect of such Trust Securities. A
proxy purporting to be executed by or on behalf of a Securityholder shall be
deemed valid unless challenged at or prior to its exercise, and the burden of
proving invalidity shall rest on the challenger. No proxy shall be valid more
than three years after its date of execution.

     Section 6.6. Securityholder Action by Written Consent.

     Any action which may be taken by Securityholders at a meeting may be taken
without a meeting if Securityholders holding more than a majority of all
Outstanding Trust Securities (based upon their Liquidation Amount) entitled to
vote in respect of such action (or such larger proportion thereof as shall be
required by any express provision of this Trust Agreement) shall consent to the
action in writing.

     Section 6.7. Record Date for Voting and Other Purposes.

     For the purposes of determining the Securityholders who are entitled to
notice of and to vote at any meeting or by written consent, or to participate in
any Distribution on the Trust Securities in respect of which a record date is
not otherwise provided for in this Trust Agreement, or for the purpose of any
other action, the Administrative Agents may from time to time fix a date, not
more than 90 days prior to the date of any meeting of Securityholders or the
payment of a Distribution or other action, as the case may be, as a record date
for the determination of the identity of the Securityholders of record for such
purposes.

     Section 6.8. Acts of Securityholders.

     Any request, demand, authorization, direction, notice, consent, waiver or
other action provided or permitted by this Trust Agreement to be given, made or
taken by Securityholders may be embodied in and evidenced by one or more
instruments of substantially similar tenor signed by such Securityholders in
person or by an agent duly appointed in writing; and, except as otherwise
expressly provided herein, such action shall become effective when such
instrument or instruments are delivered to an Administrative Agent. Such
instrument or instruments (and the action embodied therein and evidenced
thereby) are herein sometimes referred to as the "Act" of the Securityholders
signing such instrument or instruments. Proof of execution of any such
instrument or of a writing appointing any such agent shall be sufficient for any
purpose of this Trust Agreement and (subject to Section 8.1) conclusive in favor
of the Trustees, if made in the manner provided in this Section.

     The fact and date of the execution by any Person of any such instrument or
writing may be proved by the affidavit of a witness of such execution or by a
certificate of a notary public or other officer authorized by law to take
acknowledgments of deeds, certifying that the individual signing such instrument
or writing acknowledged to him the execution thereof. Where such execution is by
a signer acting in a capacity other than his individual capacity, such
certificate or affidavit shall also constitute sufficient proof of his
authority. The fact and date of the execution of any 

                                       26
<PAGE>
 
such instrument or writing, or the authority of the Person executing the same,
may also be proved in any other manner which any Trustee receiving the same
deems sufficient.

     The ownership of Capital Securities shall be proved by the Securities
Register.

     Any request, demand, authorization, direction, notice, consent, waiver or
other Act of the Securityholder of any Trust Security shall bind every future
Securityholder of the same Trust Security and the Securityholder of every Trust
Security issued upon the registration of transfer thereof or in exchange
therefor or in lieu thereof in respect of anything done, omitted or suffered to
be done by the Trustees or the Trust in reliance thereon, whether or not
notation of such action is made upon such Trust Security.

     Without limiting the foregoing, a Securityholder entitled hereunder to take
any action hereunder with regard to any particular Trust Security may do so with
regard to all or any part of the Liquidation Amount of such Trust Security or by
one or more duly appointed agents each of which may do so pursuant to such
appointment with regard to all or any part of such liquidation amount.

     If any dispute shall arise between the Securityholders and the
Administrative Agents or among such Securityholders or Trustees with respect to
the authenticity, validity or binding nature of any request, demand,
authorization, direction, consent, waiver or other Act of such Securityholder or
Trustee under this Article VI, then the determination of such matter by the
Property Trustee shall be conclusive with respect to such matter.

     A Capital Securityholder may institute a legal proceeding directly against
the Depositor under the Guarantee to enforce its rights under the Guarantee
without first instituting a legal proceeding against the Guarantee Trustee (as
defined in the Guarantee), the Trust or any person or entity.

     Section 6.9. Inspection of Records.

     Upon reasonable notice to the Administrative Agents and the Property
Trustee, the records of the Trust shall be open to inspection by Securityholders
during normal business hours for any purpose reasonably related to such
Securityholder's interest as a Securityholder.


                                 ARTICLE VII.

                        Representations and Warranties

     Section 7.1. Representations and Warranties of the Property Trustee and the
Delaware Trustee.

     The Property Trustee and the Delaware Trustee, each severally on behalf of
and as to itself, hereby represents and warrants for the benefit of the
Depositor and the Securityholders that:

     (a) the Property Trustee is a banking corporation, duly organized,validly
existing and in good standing under the laws of the State of Delaware;

     (b) the Property Trustee has full corporate power, authority and legal
right to execute, deliver and perform its obligations under this Trust Agreement
and has taken all necessary action to authorize the execution, delivery and
performance by it of this Trust Agreement;

     (c) the Delaware Trustee is a Delaware corporation duly organized, validly
existing and in good standing in the State of Delaware;

     (d) the Delaware Trustee has full corporate power, authority and legal
right to execute, deliver and perform its obligations under this Trust Agreement
and has taken all necessary action to authorize the execution, delivery and
performance by it of this Trust Agreement;

                                       27
<PAGE>
 
     (e) this Trust Agreement has been duly authorized, executed and delivered
by the Property Trustee and the Delaware Trustee and constitutes the valid and
legally binding agreement of each of the Property Trustee and the Delaware
Trustee enforceable against each of them in accordance with its terms, subject
to bankruptcy, insolvency, fraudulent transfer, reorganization, moratorium and
similar laws of general applicability relating to or affecting creditors' rights
and to general equity principles;

     (f) the execution, delivery and performance of this Trust Agreement has
been duly authorized by all necessary corporate or other action on the part of
the Property Trustee and the Delaware Trustee and does not require any approval
of stockholders of the Property Trustee and the Delaware Trustee and such
execution, delivery and performance will not (i) violate the Charter or By-laws
of the Property Trustee or the Delaware Trustee, (ii) violate any provision of,
or constitute, with or without notice or lapse of time, a default under, or
result in the creation or imposition of, any Lien on any properties included in
the Trust Property pursuant to the provisions of, any indenture, mortgage,
credit agreement, license or other agreement or instrument to which the Property
Trustee or the Delaware Trustee is a party or by which it is bound, or (iii)
violate any law, governmental rule or regulation of the United States or the
State of Delaware, as the case may be, governing the banking, trust or general
powers of the Property Trustee or the Delaware Trustee (as appropriate in
context) or any order, judgment or decree applicable to the Property Trustee or
the Delaware Trustee;

     (g) neither the authorization, execution or delivery by the Property
Trustee or the Delaware Trustee of this Trust Agreement nor the consummation of
any of the transactions by the Property Trustee or the Delaware Trustee (as
appropriate in context) contemplated herein or therein requires the consent or
approval of, the giving of notice to, the registration with or the taking of any
other action with respect to any governmental authority or agency under any
existing Federal law governing the banking, trust or general powers of the
Property Trustee or the Delaware Trustee, as the case may be, under the laws of
the State of Delaware;

     (h) there are no proceedings pending or, to the best of each of the
Property Trustee's and the Delaware Trustee's knowledge, threatened against or
affecting the Property Trustee or the Delaware Trustee in any court or before
any governmental authority, agency or arbitration board or tribunal which,
individually or in the aggregate, would materially and adversely affect the
Trust or would question the right, power and authority of the Property Trustee
or the Delaware Trustee, as the case may be, to enter into or perform its
obligations as one of the Trustees under this Trust Agreement.

     Section 7.2. Representations and Warranties of Depositor.

     The Depositor hereby represents and warrants for the benefit of the
Securityholders that:

     (a) the Trust Securities issued at the Closing Date on behalf of the
Trust have been duly authorized and executed, validly issued and delivered by
the Trustees pursuant to the terms and provisions of, and in accordance with the
requirements of, this Trust Agreement and the Securityholders will be entitled
to the benefits of this Trust Agreement; and

     (b) there are no taxes, fees or other governmental charges payable by the
Trust (or the Trustees on behalf of the Trust) under the laws of the State of
Delaware or any political subdivision thereof in connection with the execution,
delivery and performance by the Property Trustee or the Delaware Trustee, as the
case may be, of this Trust Agreement.

                                       28
<PAGE>
 
                                 ARTICLE VIII.

                                 The Trustees

     Section 8.1. Certain Duties and Responsibilities.

     (a) The duties and responsibilities of the Trustees shall be as provided by
this Trust Agreement and, in the case of the Property Trustee, by the Trust
Indenture Act. Notwithstanding the foregoing, no provision of this Trust
Agreement shall require the Trustees to expend or risk their own funds or
otherwise incur any financial liability in the performance of any of their
duties hereunder, or in the exercise of any of their rights or powers, if they
shall have reasonable grounds for believing that repayment of such funds or
adequate indemnity against such risk or liability is not reasonably assured to
it. Whether or not therein expressly so provided, every provision of this Trust
Agreement relating to the conduct or affecting the liability of or affording
protection to the Trustees shall be subject to the provisions of this Section.
Nothing in this Trust Agreement shall be construed to release the Delaware
Trustee or an Administrative Agent from liability for its own gross negligent
action, its own gross negligent failure to act, or its own willful misconduct.
To the extent that, at law or in equity, the Delaware Trustee or an
Administrative Agent has duties (including fiduciary duties) and liabilities
relating thereto to the Trust or to the Securityholders, such Administrative
Agent shall not be liable to the Trust or to any Securityholder for such
Trustee's good faith reliance on the provisions of this Trust Agreement. The
provisions of this Trust Agreement, to the extent that they restrict the duties
and liabilities of the Delaware Trustee or the Administrative Agent otherwise
existing at law or in equity, are agreed by the Depositor and the
Securityholders to replace such other duties and liabilities of the Delaware
Trustee or the Administrative Agents.

     (b) All payments made by the Property Trustee or a Paying Agent in
respect of the Trust Securities shall be made only from the revenue and proceeds
from the Trust Property and only to the extent that there shall be sufficient
revenue or proceeds from the Trust Property to enable the Property Trustee or a
Paying Agent to make payments in accordance with the terms hereof. Each
Securityholder, by its acceptance of a Trust Security, agrees that it will look
solely to the revenue and proceeds from the Trust Property to the extent legally
available for distribution to it as herein provided and that the Trustees are
not personally liable to it for any amount distributable in respect of any Trust
Security or for any other liability in respect of any Trust Security. This
Section 8.1(b) does not limit the liability of the Trustees expressly set forth
elsewhere in this Trust Agreement or, in the case of the Property Trustee, in
the Trust Indenture Act.

     (c) No provision of this Trust Agreement shall be construed to relieve the
Property Trustee from liability for its own negligent action, its own negligent
failure to act, or its own willful misconduct, except that:

               (i) the Property Trustee shall not be liable for any error of
     judgment made in good faith by an authorized officer of the Property
     Trustee, unless it shall be proved that the Property Trustee was negligent
     in ascertaining the pertinent facts;

               (ii) the Property Trustee shall not be liable with respect to any
     action taken or omitted to be taken by it in good faith in accordance with
     the direction of the Holders of not less than a majority in Liquidation
     Amount of the Trust Securities relating to the time, method and place of
     conducting any proceeding for any remedy available to the Property Trustee,
     or exercising any trust or power conferred upon the Property Trustee under
     this Trust Agreement;

               (iii) the Property Trustee's sole duty with respect to the
     custody, safe keeping and physical preservation of the Debentures and the
     Payment Account shall be to deal with such Property in a similar manner as
     the Property Trustee deals with similar property for its own account,
     subject to the protections and limitations on liability afforded to the
     Property Trustee under this Trust Agreement and the Trust Indenture Act;

               (iv) the Property Trustee shall not be liable for any interest on
     any money received by it except as it may otherwise agree with the
     Depositor; and money held by the Property Trustee need not be segregated

                                       29
<PAGE>
 
     from other funds held by it except in relation to the Payment Account
     maintained by the Property Trustee pursuant to Section 3.1 and except to
     the extent otherwise required by law; and

               (v) the Property Trustee shall not be responsible for monitoring
     the compliance by the Administrative Agents or the Depositor with their
     respective duties under this Trust Agreement, nor shall the Property
     Trustee be liable for the default or misconduct of the Administrative
     Agents or the Depositor.

     Section 8.2. Certain Notices.

     Within five Business Days after the occurrence of any Event of Default
actually known to the Property Trustee, the Property Trustee shall transmit, in
the manner and to the extent provided in Section 10.8, notice of such Event of
Default to the Securityholders, the Administrative Agents and the Depositor,
unless such Event of Default shall have been cured or waived.

     Within five Business Days after the receipt of notice of the Depositor's
exercise of its right to defer the payment of interest on the Debentures
pursuant to the Indenture, the Administrative Agent shall transmit, in the
manner and to the extent provided in Section 10.8, notice of such exercise to
the Securityholders and the Property Trustee, unless such exercise shall have
been revoked.

     Section 8.3. Certain Rights of Property Trustee.

     Subject to the provisions of Section 8.1:

     (a) the Property Trustee may rely and shall be protected in acting or
refraining from acting in good faith upon any resolution, Opinion of Counsel,
certificate, written representation of a Holder or transferee, certificate of
auditors or any other certificate, statement, instrument, opinion, report,
notice, request, consent, order, appraisal, bond, debenture, note, other
evidence of indebtedness or other paper or document believed by it to be genuine
and to have been signed or presented by the proper party or parties;

     (b) if (i) in performing its duties under this Trust Agreement the
Property Trustee is required to decide between alternative courses of action or
(ii) in construing any of the provisions of this Trust Agreement the Property
Trustee finds the same ambiguous or inconsistent with any other provisions
contained herein or (iii) the Property Trustee is unsure of the application of
any provision of this Trust Agreement, then, except as to any matter as to which
the Capital Securityholders are entitled to vote under the terms of this Trust
Agreement, the Property Trustee shall deliver a notice to the Depositor
requesting written instructions of the Depositor as to the course of action to
be taken and the Property Trustee shall take such action, or refrain from taking
such action, as the Property Trustee shall be instructed in writing to take, or
to refrain from taking, by the Depositor; provided, however, that if the
Property Trustee does not receive such instructions of the Depositor within ten
Business Days after it has delivered such notice, or such reasonably shorter
period of time set forth in such notice (which to the extent practicable shall
not be less than two Business Days), it may, but shall be under no duty to, take
or refrain from taking such action not inconsistent with this Trust Agreement as
it shall deem advisable and in the best interests of the Securityholders, in
which event the Property Trustee shall have no liability except for its own bad
faith, negligence or willful misconduct;

     (c) any direction or act of the Depositor or the Administrative Agents
contemplated by this Trust Agreement shall be sufficiently evidenced by an
Officers' Certificate;

     (d) whenever in the administration of this Trust Agreement, the
Property Trustee shall deem it desirable that a matter be established before
undertaking, suffering or omitting any action hereunder, the Property Trustee
(unless other evidence is herein specifically prescribed) may, in the absence of
bad faith on its part, request and rely upon an Officers' Certificate which,
upon receipt of such request, shall be promptly delivered by the Depositor or
the Administrative Agents;

                                       30
<PAGE>
 
     (e)  the Property Trustee shall have no duty to see to any recording,
filing or registration of any instrument (including any financing or
continuation statement or any filing under tax or securities laws) or any
rerecording, refiling or reregistration thereof;

     (f)  the Property Trustee may consult with counsel (which counsel may be
counsel to the Depositor or any of its Affiliates, and may include any of its
employees) and the advice of such counsel shall be full and complete
authorization and protection in respect of any action taken, suffered or omitted
by it hereunder in good faith and in reliance thereon and in accordance with
such advice, such counsel may be counsel to the Depositor or any of its
Affiliates, and may include any of its employees; the Property Trustee shall
have the right at any time to seek instructions concerning the administration of
this Trust Agreement from any court of competent jurisdiction;

     (g)  the Property Trustee shall be under no obligation to exercise any of
the rights or powers vested in it by this Trust Agreement at the request or
direction of any of the Securityholders pursuant to this Trust Agreement, unless
such Securityholders shall have offered to the Property Trustee reasonable
security or indemnity against the costs, expenses and liabilities which might be
incurred by it in compliance with such request or direction;

     (h)  the Property Trustee shall not be bound to make any investigation into
the facts or matters stated in any resolution, certificate, statement,
instrument, opinion, report, notice, request, consent, order, approval, bond,
debenture, note or other evidence of indebtedness or other paper or document,
unless requested in writing to do so by one or more Securityholders, but the
Property Trustee may make such further inquiry or investigation into such facts
or matters as it may see fit;

     (i)  the Property Trustee may execute any of the trusts or powers hereunder
or perform any duties hereunder either directly or by or through its agents or
attorneys, provided that the Property Trustee shall be responsible for its own
negligence or recklessness with respect to selection of any agent or attorney
appointed by it hereunder;

     (j)  whenever in the administration of this Trust Agreement the Property
Trustee shall deem it desirable to receive instructions with respect to
enforcing any remedy or right or taking any other action hereunder the Property
Trustee (i) may request instructions from the Holders of the Trust Securities
which instructions may only be given by the Holders of the same proportion in
Liquidation Amount of the Trust Securities as would be entitled to direct the
Property Trustee under the terms of the Trust Securities in respect of such
remedy, right or action, (ii) may refrain from enforcing such remedy or right or
taking such other action until such instructions are received, and (iii) shall
be protected in acting in accordance with such instructions; and

     (k)  except as otherwise expressly provided by this Trust Agreement, the
Property Trustee shall not be under any obligation to take any action that is
discretionary under the provisions of this Trust Agreement.

     No provision of this Trust Agreement shall be deemed to impose any duty or
obligation on the Property Trustee to perform any act or acts or exercise any
right, power, duty or obligation conferred or imposed on it, in any jurisdiction
in which it shall be illegal, or in which the Property Trustee shall be
unqualified or incompetent in accordance with applicable law, to perform any
such act or acts, or to exercise any such right, power, duty or obligation. No
permissive power or authority available to the Property Trustee shall be
construed to be a duty.

     Section 8.4. Not Responsible for Recitals or Issuance of Securities.

     The recitals contained herein and in the Trust Securities Certificates
shall be taken as the statements of the Depositor, and the Trustees do not
assume any responsibility for their correctness. The Trustees shall not be
accountable for the use or application by the Depositor of the proceeds of the
Debentures.

     Section 8.5. May Hold Securities.

     Except as provided in the definition of the term "Outstanding" in Article
I, any Trustee or any other agent of any Trustee or the Trust, in its individual
or any other capacity, may become the owner or pledgee of Trust 

                                       31
<PAGE>
 
Securities and, subject to Sections 8.8 and 8.13, may otherwise deal with the
Trust with the same rights it would have if it were not a Trustee or such other
agent.

     Section 8.6. Compensation; Indemnity; Fees.

     (a)  The Depositor agrees:

          (i)   to pay to the Trustees from time to time compensation for all
     services rendered by them hereunder (which compensation shall not be
     limited by any provision of law in regard to the compensation of a trustee
     of an express trust) as specified in a separate agreement between any of
     the Trustees and the Depositor;

          (ii)  except as otherwise expressly provided herein, to reimburse
     the Trustees upon request for all reasonable expenses, disbursements and
     advances incurred or made by the Trustees in accordance with any provision
     of this Trust Agreement (including the reasonable compensation and the
     expenses and disbursements of its agents and counsel), except any such
     expense, disbursement or advance as may be attributable to its negligence
     or bad faith; and

          (iii) to the fullest extent permitted by applicable law, to indemnify
     and hold harmless (w) each Trustee, (x) any Affiliate of any Trustee, (y)
     any officer, director, shareholder, employee, representative or agent of
     any Trustee, and (z) any employee or agent of the Trust or its Affiliates,
     (referred to herein as an "Indemnified Person") from and against any loss,
     damage, liability, tax, penalty, expense or claim of any kind or nature
     whatsoever incurred by such Indemnified Person by reason of the creation,
     operation or termination of the Trust or any act or omission performed or
     omitted by such Indemnified Person in good faith on behalf of the Trust and
     in a manner such Indemnified Person reasonably believed to be within the
     scope of authority conferred on such Indemnified Person by this Trust
     Agreement, except that no Indemnified Person shall be entitled to be
     indemnified in respect of any loss, damage or claim incurred by such
     Indemnified Person by reason of negligence or willful misconduct with
     respect to such acts or omissions.

     (b)  In furtherance of the foregoing, the Depositor hereby agrees, whether
or not any of the transactions contemplated by the Trust Agreement shall be
consummated, to assume liability for, and hereby indemnifies, protects, saves
and keeps harmless the Property Trustee, the Delaware Trustee and each of its
respective officers, directors, successors, assigns, legal representatives,
agents and servants (each an "ERISA Indemnified Person"), from and against any
and all liabilities, obligations, losses, damages, penalties, taxes (excluding
any taxes payable by the Bank on or measured by any compensation received by the
Bank for its services as trustee), claims, actions, investigations, proceedings,
costs, expenses or disbursements (including, without limitation, reasonable
legal fees and expenses) of any kind and nature whatsoever which may be imposed
on, incurred by or asserted at any time against an ERISA Indemnified Person
(whether or not also indemnified against by any other person) in any way
relating to or arising out of (i) the assets of the Trust being deemed to be
"plan assets" within the meaning of Department of Labor Regulations Section
2510.3-101 (ERISA), (ii) any violation by the Trust, any Trustee or the
Depositor of the prohibited transaction rules under the Employee Retirement
Income Security Act of 1974, as amended ("ERISA") or any excise taxes under
Section 4975 of the Code and (iii) the application of the fiduciary investment
standards of ERISA to the Trust, any Trustee or the Depositor.

     (c)  In case any such action, investigation or proceeding shall be brought
involving an ERISA Indemnified Person, Depositor shall assume the defense
thereof, including the employment of counsel and the payment of all expenses.
The ERISA Indemnified Person shall have the right to employ separate counsel in
any such action, investigation or proceeding and to participate in the defense
thereof, but the reasonable counsel fees and expenses of such counsel shall be
paid by Depositor.

     (d)  If the indemnification provided for herein is invalid or unenforceable
in accordance with its terms, then Depositor shall contribute to the amount paid
or payable by an ERISA Indemnified Person as a result of such liability in such
proportion as is appropriate to reflect the relative benefits received by
Depositor on one hand and the 

                                       32
<PAGE>
 
ERISA Indemnified Persons on the other from the transactions contemplated by the
Trust Agreement. For this purpose, the benefits received by Depositor shall be
the aggregate value of the Trust assets, and the benefits received by the ERISA
Indemnified Persons shall be its fees as trustee less costs and unreimbursed
expenses incurred by it as trustee in relation to the Trust. If, however, the
allocation provided by the immediately preceding two sentences is not permitted
by applicable law, then Depositor shall contribute to such amount paid or
payable by an ERISA Indemnified Person in such proportion as is appropriate to
reflect not only such relative benefits but also the relative fault of Depositor
on the one hand and the ERISA Indemnified Person on the other in connection with
the actions or omissions which resulted in such liability, as well as any other
relevant equitable considerations.

     The provisions of this Section 8.6 shall survive the termination of this
Trust Agreement.

     The Depositor and any Trustee may engage in or possess an interest in other
business ventures of any nature or description, independently or with others,
similar or dissimilar to the business of the Trust, and the Trust and the
Holders of Trust Securities shall have no rights by virtue of this Trust
Agreement in and to such independent ventures or the income or profits derived
therefrom, and the pursuit of any such venture, even if competitive with the
business of the Trust, shall not be deemed wrongful or improper. Neither the
Depositor, nor any Trustee, shall be obligated to present any particular
investment or other opportunity to the Trust even if such opportunity is of a
character that, if presented to the Trust, could be taken by the Trust, and the
Depositor or any Trustee shall have the right to take for its own account
(individually or as a partner or fiduciary) or to recommend to others any such
particular investment or other opportunity. Any Trustee may engage or be
interested in any financial or other transaction with the Depositor or any
Affiliate of the Depositor, or may act as depository for, trustee or agent for,
or act on any committee or body of holders of, securities or other obligations
of the Depositor or its Affiliates.

     Section 8.7. Corporate Property Trustee Required; Eligibility of Trustees.

     (a)  There shall at all times be a Property Trustee hereunder with respect
to the Trust Securities. The Property Trustee shall be a Person that is eligible
pursuant to the Trust Indenture Act to act as such and has a combined capital
and surplus of at least $50,000,000. If any such Person publishes reports of
condition at least annually, pursuant to law or to the requirements of its
supervising or examining authority, then for the purposes of this Section
8.7(a), the combined capital and surplus of such Person shall be deemed to be
its combined capital and surplus as set forth in its most recent report of
condition so published. If at any time the Property Trustee with respect to the
Trust Securities shall cease to be eligible in accordance with the provisions of
this Section 8.7(a), it shall resign immediately in the manner and with the
effect hereinafter specified in this Article.

     (b)  There shall at all times be one or more Administrative Agents
hereunder with respect to the Trust Securities. Each Administrative Agent shall
be either a natural person who is at least 21 years of age or a legal entity
that shall act through one or more persons authorized to bind that entity.

     (c)  There shall at all times be a Delaware Trustee with respect to the
Trust Securities. The Delaware Trustee shall either be (i) a natural person who
is at least 21 years of age and a resident of the State of Delaware or (ii) a
legal entity with its principal place of business in the State of Delaware and
that otherwise meets the requirements of applicable Delaware law that shall act
through one or more persons authorized to bind such entity.

     Section 8.8. Conflicting Interests.

     If the Property Trustee has or shall acquire a conflicting interest within
the meaning of the Trust Indenture Act, the Property Trustee shall either
eliminate such interest or resign, to the extent and in the manner provided by,
and subject to the provisions of, the Trust Indenture Act and this Trust
Agreement.

     Section 8.9. Co-Trustees and Separate Trustee.

     Unless an Event of Default shall have occurred and be continuing, at any
time or times, for the purpose of meeting the legal requirements of the Trust
Indenture Act or of any jurisdiction in which any part of the Trust Property may
at the time be located, the Depositor and the Administrative Agents, by agreed
action of the majority 

                                       33
<PAGE>
 
of such Trustees, shall have power to appoint, and upon the written request of
the Administrative Agents, the Depositor shall for such purpose join with the
Administrative Agents in the execution, delivery, and performance of all
instruments and agreements necessary or proper to appoint, one or more Persons
approved by the Property Trustee either to act as co-trustee, jointly with the
Property Trustee, of all or any part of such Trust Property, or to the extent
required by law to act as separate trustee of any such property, in either case
with such powers as may be provided in the instrument of appointment, and to
vest in such Person or Persons in the capacity aforesaid, any property, title,
right or power deemed necessary or desirable, subject to the other provisions of
this Section 8.9. If the Depositor does not join in such appointment within 15
days after the receipt by it of a request so to do, or in case a Debenture Event
of Default has occurred and is continuing, the Property Trustee alone shall have
power to make such appointment. Any co-trustee or separate trustee appointed
pursuant to this Section shall either be (i) a natural person who is at least 21
years of age and a resident of the United States or (ii) a legal entity with its
principal place of business in the United States that shall act through one or
more persons authorized to bind such entity.

     Should any written instrument from the Depositor be required by any co-
trustee or separate trustee so appointed for more fully confirming to such co-
trustee or separate trustee such property, title, right, or power, any and all
such instruments shall, on request, be executed, acknowledged and delivered by
the Depositor.

     Every co-trustee or separate trustee shall, to the extent permitted by law,
but to such extent only, be appointed subject to the following terms, namely:

     (a)  The Trust Securities shall be executed and delivered and all rights,
powers, duties, and obligations hereunder in respect of the custody of
securities, cash and other personal property held by, or required to be
deposited or pledged with, the Trustees specified hereunder, shall be exercised,
solely by such Trustees and not by such co-trustee or separate trustee.

     (b)  The rights, powers, duties, and obligations hereby conferred or
imposed upon the Property Trustee in respect of any property covered by such
appointment shall be conferred or imposed upon and exercised or performed by the
Property Trustee or by the Property Trustee and such co-trustee or separate
trustee jointly, as shall be provided in the instrument appointing such co-
trustee or separate trustee, except to the extent that under any law of any
jurisdiction in which any particular act is to be performed, the Property
Trustee shall be incompetent or unqualified to perform such act, in which event
such rights, powers, duties and obligations shall be exercised and performed by
such co-trustee or separate trustee.

     (c)  The Property Trustee at any time, by an instrument in writing executed
by it, with the written concurrence of the Depositor, may accept the resignation
of or remove any co-trustee or separate trustee appointed under this Section
8.9, and, in case a Debenture Event of Default has occurred and is continuing,
the Property Trustee shall have power to accept the resignation of, or remove,
any such co-trustee or separate trustee without the concurrence of the
Depositor. Upon the written request of the Property Trustee, the Depositor shall
join with the Property Trustee in the execution, delivery and performance of all
instruments and agreements necessary or proper to effectuate such resignation or
removal. A successor to any co-trustee or separate trustee so resigned or
removed may be appointed in the manner provided in this Section.

     (d)  No co-trustee or separate trustee hereunder shall be personally liable
by reason of any act or omission of the Property Trustee or any other trustee
hereunder.

     (e)  The Property Trustee shall not be liable by reason of any act of a co-
trustee or separate trustee.

     (f)  Any Act of Holders delivered to the Property Trustee shall be deemed
to have been delivered to each such co-trustee and separate trustee.

                                       34
<PAGE>
 
     Section 8.10. Resignation and Removal; Appointment of Successor.

     No resignation or removal of any Trustee (the "Relevant Trustee") and
no appointment of a successor Trustee pursuant to this Article VIII shall become
effective until the acceptance of appointment by the successor Trustee in
accordance with the applicable requirements of Section 8.11.

     Subject to the immediately preceding paragraph, the Relevant Trustee may
resign at any time by giving written notice thereof to the Holder of the Common
Securities. If the instrument of acceptance by the successor Trustee required by
Section 8.11 shall not have been delivered to the Relevant Trustee within 30
days after the giving of such notice of resignation, the Relevant Trustee may
petition, at the expense of the Trust, any court of competent jurisdiction for
the appointment of a successor Relevant Trustee.

     Unless a Debenture Event of Default shall have occurred and be continuing,
any Trustee may be removed at any time by Act of the Common Securityholder. If a
Debenture Event of Default shall have occurred and be continuing, the Property
Trustee or the Delaware Trustee, or both of them, may be removed at such time by
Act of the Holders of a majority in Liquidation Amount of the Capital
Securities, delivered to the Relevant Trustee (in its individual capacity and on
behalf of the Trust). An Administrative Agent may be removed by the Common
Securityholder at any time.

     If any Trustee shall resign, be removed or become incapable of acting as
Trustee, or if a vacancy shall occur in the office of any Trustee for any cause,
at a time when no Debenture Event of Default shall have occurred and be
continuing, the Common Securityholder, by Act of the Common Securityholder
delivered to the retiring Trustee, shall promptly appoint a successor Trustee or
Trustees, and the retiring Trustee shall comply with the applicable requirements
of Section 8.11. If the Property Trustee or the Delaware Trustee shall resign,
be removed or become incapable of continuing to act as the Property Trustee or
the Delaware Trustee, as the case may be, at a time when a Debenture Event of
Default shall have occurred and be continuing, the Capital Securityholders, by
Act of the Securityholders of a majority in Liquidation Amount of the Capital
Securities then Outstanding delivered to the retiring Relevant Trustee, shall
promptly appoint a successor Relevant Trustee or Trustees, and such successor
Trustee shall comply with the applicable requirements of Section 8.11. If an
Administrative Agent shall resign, be removed or become incapable of acting as
Administrative Agent, the Common Securityholder by Act of the Common
Securityholder delivered to the Administrative Agent shall promptly appoint a
successor Administrative Agent or Administrative Agents and such successor
Administrative Agent or Agents shall comply with the applicable requirements of
Section 8.11. If no successor Relevant Trustee shall have been so appointed by
the Common Securityholder or the Capital Securityholders and accepted
appointment in the manner required by Section 8.11, any Securityholder who has
been a Securityholder of Trust Securities for at least six months may, on behalf
of himself and all others similarly situated, petition any court of competent
jurisdiction for the appointment of a successor Relevant Trustee.

     The Administrative Agents shall give notice of each resignation and each
removal of a Trustee and each appointment of a successor Trustee to all
Securityholders in the manner provided in Section 10.8 and shall give notice to
the Depositor. Each notice shall include the name of the successor Relevant
Trustee and the address of its Corporate Trust Office if it is the Property
Trustee.

     Notwithstanding the foregoing or any other provision of this Trust
Agreement, in the event any Administrative Agent or a Delaware Trustee who is a
natural person dies or becomes, in the opinion of the Depositor, incompetent or
incapacitated, the vacancy created by such death, incompetence or incapacity may
be filled by (a) the unanimous act of the remaining Administrative Agents if
there are at least two of them or (b) otherwise by the Depositor (with the
successor in each case being a Person who satisfies the eligibility requirement
for Administrative Agents or Delaware Trustee, as the case may be, set forth in
Section 8.7).

     Section 8.11. Acceptance of Appointment by Successor.

     In case of the appointment hereunder of a successor Trustee such successor
Trustee so appointed shall execute, acknowledge and deliver to the Trust and to
the retiring Trustee an instrument accepting such appointment, 

                                       35
<PAGE>
 
and thereupon the resignation or removal of the retiring Trustee shall become
effective and such successor Trustee, without any further act, deed or
conveyance, shall become vested with all the rights, powers, trusts and duties
of the retiring Trustee; but, on the request of the Depositor or the successor
Trustee, such retiring Trustee shall, upon payment of its charges, execute and
deliver an instrument transferring to such successor Trustee all the rights,
powers and trusts of the retiring Trustee and if the Property Trustee is the
resigning Trustee shall duly assign, transfer and deliver to the successor
Trustee all property and money held by such retiring Property Trustee hereunder.

     In case of the appointment hereunder of a successor Relevant Trustee, the
retiring Relevant Trustee and each successor Relevant Trustee with respect to
the Trust Securities shall execute and deliver an amendment hereto wherein each
successor Relevant Trustee shall accept such appointment and which (a) shall
contain such provisions as shall be necessary or desirable to transfer and
confirm to, and to vest in, each successor Relevant Trustee all the rights,
powers, trusts and duties of the retiring Relevant Trustee with respect to the
Trust Securities and the Trust and (b) shall add to or change any of the
provisions of this Trust Agreement as shall be necessary to provide for or
facilitate the administration of the Trust by more than one Relevant Trustee, it
being understood that nothing herein or in such amendment shall constitute such
Relevant Trustees co-trustees and upon the execution and delivery of such
amendment the resignation or removal of the retiring Relevant Trustee shall
become effective to the extent provided therein and each such successor Relevant
Trustee, without any further act, deed or conveyance, shall become vested with
all the rights, powers, trusts and duties of the retiring Relevant Trustee; but,
on request of the Trust or any successor Relevant Trustee such retiring Relevant
Trustee shall duly assign, transfer and deliver to such successor Relevant
Trustee all Trust Property, all proceeds thereof and money held by such retiring
Relevant Trustee hereunder with respect to the Trust Securities and the Trust.

     Upon request of any such successor Relevant Trustee, the Trust shall
execute any and all instruments for more fully and certainly vesting in and
confirming to such successor Relevant Trustee all such rights, powers and trusts
referred to in the first or second preceding paragraph, as the case may be.

     No successor Relevant Trustee shall accept its appointment unless at the
time of such acceptance such successor Relevant Trustee shall be qualified and
eligible under this Article.

     Section 8.12. Merger, Conversion, Consolidation or Succession to Business.

     Any corporation into which the Property Trustee or the Delaware Trustee may
be merged or converted or with which it may be consolidated, or any corporation
resulting from any merger, conversion or consolidation to which such Relevant
Trustee shall be a party, or any corporation succeeding to all or substantially
all the corporate trust business of such Relevant Trustee, shall be the
successor of such Relevant Trustee hereunder, provided such corporation shall be
otherwise qualified and eligible under this Article VIII, without the execution
or filing of any paper or any further act on the part of any of the parties
hereto.

     Section 8.13. Preferential Collection of Claims Against Depositor or
Trust.

     In case of the pendency of any receivership, insolvency, liquidation,
bankruptcy, reorganization, arrangement, adjustment, composition or other
similar judicial proceeding relative to the Trust or any other obligor upon the
Trust Securities or the property of the Trust or of such other obligor or their
creditors, the Property Trustee (irrespective of whether any Distributions on
the Trust Securities shall then be due and payable as therein expressed or by
declaration or otherwise and irrespective of whether the Property Trustee shall
have made any demand on the Trust for the payment of any past due Distributions)
shall be entitled and empowered, to the fullest extent permitted by law, by
intervention in such proceeding or otherwise:

     (a)  to file and prove a claim for the whole amount of any Distributions
owing and unpaid in respect of the Trust Securities and to file such other
papers or documents as may be necessary or advisable in order to have the claims
of the Property Trustee (including any claim for the reasonable compensation,
expenses, disbursements and advances of the Property Trustee, its agents and
counsel) and of the Holders allowed in such judicial proceeding, and

                                       36
<PAGE>
 
     (b)  to collect and receive any moneys or other property payable or
deliverable on any such claims and to distribute the same;

and any custodian, receiver, assignee, trustee, liquidator, sequestrator or
other similar official in any such judicial proceeding is hereby authorized by
each Holder to make such payments to the Property Trustee and, in the event the
Property Trustee shall consent to the making of such payments directly to the
Holders, to pay to the Property Trustee any amount due it for the reasonable
compensation, expenses, disbursements and advances of the Property Trustee, its
agents and counsel, and any other amounts due the Property Trustee.

     Nothing herein contained shall be deemed to authorize the Property Trustee
to authorize or consent to or accept or adopt on behalf of any Holder any plan
of reorganization, arrangement adjustment or compensation affecting the Trust
Securities or the rights of any Holder thereof or to authorize the Property
Trustee to vote in respect of the claim of any Holder in any such proceeding.

     Section 8.14. Reports by Property Trustee.

     (a)  Not later than July 15 of each year commencing with July 15, 1997, the
Property Trustee shall transmit to all Securityholders in accordance with
Section 10.8, and to the Depositor, a brief report dated as of the immediately
preceding December 31 with respect to:

          (i)    its eligibility under Section 8.7 or, in lieu thereof, if to
     the best of its knowledge it has continued to be eligible under said
     Section, a written statement to such effect;

          (ii)   a statement that the Property Trustee has complied with all of
     its obligations under this Trust Agreement during the twelve-month period
     (or, in the case of the initial report, the period since the Closing Date)
     ending with such December 31 or, if the Property Trustee has not complied
     in any material respect with such obligations, a description of such
     noncompliance; and

          (iii)  any change in the property and funds in its possession as
     Property Trustee since the date of its last report and any action taken by
     the Property Trustee in the performance of its duties hereunder which it
     has not previously reported and which in its opinion materially affects the
     Trust Securities.

     (b)  In addition the Property Trustee shall transmit to Securityholders
such reports concerning the Property Trustee and its actions under this Trust
Agreement as may be required pursuant to the Trust Indenture Act at the times
and in the manner provided pursuant thereto.

     (c)  A copy of each such report shall, at the time of such transmission
to Holders, be filed by the Property Trustee with each national stock exchange,
the Nasdaq National Market or such other interdealer quotation system or self-
regulatory organization upon which the Trust Securities are listed or traded, if
any, with the Commission and with the Depositor.

     Section 8.15. Reports to the Property Trustee.

     The Depositor and the Administrative Agents on behalf of the Trust shall
provide to the Property Trustee and the Holders such documents, reports and
information as required by Section 314 of the Trust Indenture Act (if any) and
the compliance certificate required by Section 314(a) of the Trust Indenture Act
in the form, in the manner and at the times required by Section 314 of the Trust
Indenture Act.

     Section 8.16. Evidence of Compliance with Conditions Precedent.

     Each of the Depositor and the Administrative Agents on behalf of the
Trust shall provide to the Property Trustee such evidence of compliance with any
conditions precedent, if any, provided for in this Trust Agreement that relate
to any of the matters set forth in Section 314 (c) of the Trust Indenture Act.
Any certificate or opinion required 

                                       37
<PAGE>
 
to be given by an officer pursuant to Section 314(c)(1) of the Trust Indenture
Act shall be given in the form of an Officers' Certificate.

     Section 8.17 Number of Trustees.

     (a)  The number of Trustees shall be five, provided that the Holder of all
of the Common Securities by written instrument may increase or decrease the
number of Administrative Agents. The Property Trustee and the Delaware Trustee
may be the same Person.

     (b)  If a Trustee ceases to hold office for any reason and the number of
Administrative Agents is not reduced pursuant to Section 8.17(a), or if the
number of Trustees is increased pursuant to Section 8.17(a), a vacancy shall
occur. The vacancy shall be filled with a Trustee appointed in accordance with
Section 8.10.

     (c)  The death, resignation, retirement, removal, bankruptcy, incompetence
or incapacity to perform the duties of a Trustee shall not operate to annul the
Trust. Whenever a vacancy in the number of Administrative Agents shall occur,
until such vacancy is filled by the appointment of an Administrative Agent in
accordance with Section 8.10, the Administrative Agents in office, regardless of
their number (and notwithstanding any other provision of this Agreement), shall
have all the powers granted to the Administrative Agents and shall discharge all
the duties imposed upon the Administrative Agents by this Trust Agreement.

     Section 8.18. Delegation of Power.

     (a)  Any Administrative Agent may, by power of attorney consistent with
applicable law, delegate to any other natural person over the age of 21 his or
her power for the purpose of executing any documents contemplated in Section
2.7(a), including any registration statement or amendment thereto filed with the
Commission, or making any other governmental filing; and

     (b)  The Administrative Agents shall have power to delegate from time to
time to such of their number or to the Depositor the doing of such things and
the execution of such instruments either in the name of the Trust or the names
of the Administrative Agents or otherwise as the Administrative Agents may deem
expedient, to the extent such delegation is not prohibited by applicable law or
contrary to the provisions of this Trust Agreement, as set forth herein.


                                  ARTICLE IX.

                      Termination, Liquidation and Merger

     Section 9.1. Termination Upon Expiration Date.

     Unless earlier dissolved, the Trust shall automatically dissolve on
November 6, 2027 (the "Expiration Date"), following the distribution of the
Trust Property in accordance with Section 9.4.

     Section 9.2. Early Termination.

     The first to occur of any of the following events is an "Early Termination
Event":

     (a)  the occurrence of a Bankruptcy Event in respect of, or the dissolution
or liquidation of, the Depositor;

     (b)  the written direction to the Property Trustee from the Depositor at
any time to dissolve the Trust and distribute Debentures to Securityholders in
exchange for the Like Amount of the Trust Securities (which direction is
optional and wholly within the discretion of the Depositor).

                                       38
<PAGE>
 
     (c)  the redemption of all of the Trust Securities in connection with the
prepayment or repayment of all the Debentures; and

     (d)  the entry of an order for dissolution of the Trust by a court of
competent jurisdiction.

     Section 9.3. Termination.

     The respective obligations and responsibilities of the Trustees and the
Trust created and continued hereby shall terminate upon the latest to occur of
the following: (a) the distribution by the Property Trustee to Securityholders
upon the liquidation of the Trust pursuant to Section 9.4, or upon the
redemption of all of the Trust Securities pursuant to Section 4.2, of all
amounts required to be distributed hereunder upon the final payment of the Trust
Securities; (b) the payment of any expenses owed by the Trust; and (c) the
discharge of all administrative duties of the Administrative Agents, including
the performance of any tax reporting obligations with respect to the Trust or
the Securityholders.

     Section 9.4. Liquidation.

     (a)  If an Early Termination Event specified in clause (a), (b) or (d) of
Section 9.2 occurs or upon the Expiration Date, the Trust shall be liquidated by
the Administrative Agents as expeditiously as the Administrative Agents
determine to be possible by distributing, after satisfaction of liabilities to
creditors of the Trust as provided by applicable law, to each Securityholder a
Like Amount of Debentures, subject to Section 9.4(d). Notice of liquidation
shall be given by the Administrative Agents by first-class mail, postage prepaid
mailed not later than 30 nor more than 60 days prior to the Liquidation Date to
each Holder of Trust Securities at such Holder's address appearing in the
Securities Register. All notices of liquidation shall:

               (i)   state the Liquidation Date;

               (ii)  state that from and after the Liquidation Date, the Trust
     Securities will no longer be deemed to be Outstanding and any Trust
     Securities Certificates not surrendered for exchange will be deemed to
     represent a Like Amount of Debentures; and

               (iii) provide such information with respect to the mechanics by
     which Holders may exchange Trust Securities Certificates for certificates
     representing the Like Amount of the Debentures, or if Section 9.4(d)
     applies receive a Liquidation Distribution, as the Administrative Agents or
     the Property Trustee shall deem appropriate.

     (b)  Except where Section 9.2(c) or 9.4(d) applies, in order to effect the
liquidation of the Trust and distribution of the Debentures to Securityholders,
the Administrative Agents shall establish a record date for such distribution
(which shall be not more than 45 days prior to the Liquidation Date) and,
through the appointment of a separate exchange agent, shall establish such
procedures as it shall deem appropriate to effect the distribution of Debentures
in exchange for the Outstanding Trust Securities.

     (c)  Except where Section 9.2(c) or 9.4(d) applies, after the Liquidation
Date, (i) the Trust Securities will no longer be deemed to be Outstanding, (ii)
certificates representing a Like Amount of Debentures will be issued to holders
of Trust Securities Certificates, upon surrender of such certificates to the
Administrative Agents or their agent for exchange, (iii) the Depositor shall use
its best efforts to have the Debentures listed on the New York Stock Exchange or
on such other exchange, interdealer quotation system or self-regulatory
organization as the Capital Securities are then listed, if any, (iv) any Trust
Securities Certificates not so surrendered for exchange will be deemed to
represent a Like Amount of Debentures, accruing interest at the rate provided
for in the Debentures from the last Distribution Date on which a Distribution
was made on the related Trust Securities until such Certificates are so
surrendered (and until such Certificates are so surrendered, no payments of
interest or principal will be made to Holders of Debentures represented by such
Certificates) and (v) all rights of Securityholders holding Trust Securities
will cease, except the right of such Securityholders to receive the Like Amount
of Debentures upon surrender of Trust Securities Certificates.

                                       39
<PAGE>
 
     (d)  In the event that, notwithstanding the other provisions of this
Section 9.4, whether because of an order for dissolution entered by a court of
competent jurisdiction or otherwise, distribution of the Debentures in the
manner provided herein is determined by the Administrative Agents not to be
practical, the Trust Property shall be liquidated, and the Trust shall be
dissolved, wound-up or terminated, by the Administrative Agents in such manner
as the Administrative Agents determine. In such event, on the date of the
dissolution, winding-up or other termination of the Trust, Securityholders will
be entitled to receive out of the assets of the Trust available for distribution
to Securityholders, after satisfaction of liabilities to creditors of the Trust
as provided by applicable law, an amount equal to the Liquidation Amount per
Trust Security plus accumulated and unpaid Distributions thereon to the date of
payment (such amount being the "Liquidation Distribution"). If, upon any such
dissolution, winding up or termination, the Liquidation Distribution can be paid
only in part because the Trust has insufficient assets available to pay in full
the aggregate Liquidation Distribution, then, subject to the next succeeding
sentence, the amounts payable by the Trust on the Trust Securities shall be paid
on a pro rata basis (based upon Liquidation Amounts). The holder of the Common
Securities will be entitled to receive Liquidation Distributions upon any such
dissolution, winding-up or termination pro rata (determined as aforesaid) with
Holders of Capital Securities, except that, if a Debenture Event of Default has
occurred and is continuing, the Holders of Capital Securities shall have a
priority over the Holders of Common Securities.

     Section 9.5. Mergers, Consolidations, Amalgamations or Replacements of
the Trust.

     The Trust may not merge with or into, consolidate, amalgamate, or be
replaced by, or convey, transfer or lease its properties and assets
substantially as an entirety to any corporation or other body, except pursuant
to this Section 9.5. At the request of the Depositor, with the consent of the
Administrative Agents and without the consent of the Holders of the Capital
Securities, the Property Trustee or the Delaware Trustee, the Trust may merge
with or into, consolidate, amalgamate, or be replaced by or convey, transfer or
lease its properties and assets substantially as an entirety to a trust
organized as such under the laws of any State; provided, that (i) such successor
entity either (a) expressly assumes all of the obligations of the Trust with
respect to the Capital Securities or (b) substitutes for the Capital Securities
other securities having substantially the same terms as the Capital Securities
(the "Successor Securities") so long as the Successor Securities rank the same
as the Capital Securities rank in priority with respect to distributions and
payments upon liquidation, redemption and otherwise, (ii) the Depositor
expressly appoints a trustee of such successor entity possessing the same powers
and duties as the Property Trustee as the holder of the Debentures, (iii) the
Successor Securities are listed or traded, or any Successor Securities will be
listed upon notification of issuance, on any national securities exchange or
other organization on which the Capital Securities are then listed or traded, if
any, (iv) such merger, consolidation, amalgamation, replacement, conveyance,
transfer or lease does not cause the Capital Securities (including any Successor
Securities) to be downgraded by any nationally recognized statistical rating
organization, (v) such merger, consolidation, amalgamation, replacement,
conveyance, transfer or lease does not adversely affect the rights, preferences
and privileges of the holders of the Capital Securities (including any Successor
Securities) in any material respect, (vi) such successor entity has a purpose
identical to that of the Trust, (vii) prior to such merger, consolidation,
amalgamation, replacement, conveyance, transfer or lease, the Depositor has
received an Opinion of Counsel to the effect that (a) such merger,
consolidation, amalgamation, replacement, conveyance, transfer or lease does not
adversely affect the rights, preferences and privileges of the holders of the
Capital Securities (including any Successor Securities) in any material respect,
and (b) following such merger, consolidation, amalgamation, replacement,
conveyance, transfer or lease, neither the Trust nor such successor entity will
be required to register as an investment company under the 1940 Act and (viii)
the Depositor owns all of the Common Securities of such successor entity and
guarantees the obligations of such successor entity under the Successor
Securities at least to the extent provided by the Guarantee. Notwithstanding the
foregoing, the Trust shall not, except with the consent of holders of 100% in
Liquidation Amount of the Capital Securities, consolidate, amalgamate, merge
with or into, or be replaced by or convey, transfer or lease its properties and
assets substantially as an entirety to any other entity or permit any other
entity to consolidate, amalgamate, merge with or into, or replace it if such
consolidation, amalgamation, merger, replacement, conveyance, transfer or lease
would cause the Trust or the successor entity to be classified as other than a
grantor trust for United States Federal income tax purposes.

                                       40
<PAGE>
 
                                  ARTICLE X.

                           Miscellaneous Provisions

     Section 10.1. Limitation of Rights of Securityholders.

     The death or incapacity of any person having an interest, beneficial or
otherwise, in Trust Securities shall not operate to terminate this Trust
Agreement, nor entitle the legal representatives or heirs of such person or any
Securityholder for such person, to claim an accounting, take any action or bring
any proceeding in any court for a partition or winding up of the arrangements
contemplated hereby, nor otherwise affect the rights, obligations and
liabilities of the parties hereto or any of them.

     Section 10.2. Amendment.

     (a)  This Trust Agreement may be amended from time to time by the
Property Trustee, the Administrative Agents and the Depositor, without the
consent of any Securityholders, (i) to cure any ambiguity, correct or supplement
any provision herein which may be inconsistent with any other provision herein,
or to make any other provisions with respect to matters or questions arising
under this Trust Agreement, which shall not be inconsistent with the other
provisions of this Trust Agreement, or (ii) to modify, eliminate or add to any
provisions of this Trust Agreement to such extent as shall be necessary to
ensure that the Trust will be classified for United States Federal income tax
purposes as a grantor trust at all times that any Trust Securities are
outstanding or to ensure that the Trust will not be required to register as an
investment company under the 1940 Act; provided, however, that in the case of
clause (i), such action shall not adversely affect in any material respect the
interests of any Securityholder, and any amendments of this Trust Agreement
shall become effective when notice thereof is given to the Securityholders.

     (b)  Except as provided in Section 10.2(c) hereof, any provision of
this Trust Agreement may be amended by the Trustees and the Depositor with (i)
the consent of Trust Securityholders representing not less than a majority
(based upon Liquidation Amounts) of the Trust Securities then Outstanding and
(ii) receipt by the Trustees of an Opinion of Counsel to the effect that such
amendment or the exercise of any power granted to the Trustees in accordance
with such amendment will not affect the Trust's status as a grantor trust for
United States Federal income tax purposes or the Trust's exemption from status
of an investment company under the 1940 Act.

     (c)  In addition to and notwithstanding any other provision in this
Trust Agreement, without the consent of each affected Securityholder (such
consent being obtained in accordance with Section 6.3 or 6.6 hereof), this Trust
Agreement may not be amended to (i) change the amount or timing of any
Distribution on the Trust Securities or otherwise adversely affect the amount of
any Distribution required to be made in respect of the Trust Securities as of a
specified date or (ii) restrict the right of a Securityholder to institute suit
for the enforcement of any such payment on or after such date; notwithstanding
any other provision herein, without the unanimous consent of the Securityholders
(such consent being obtained in accordance with Section 6.3 or 6.6 hereof), this
paragraph (c) of this Section 10.2 may not be amended.

     (d)  Notwithstanding any other provisions of this Trust Agreement, the
Depositor shall not enter into or consent to any amendment to this Trust
Agreement which would cause the Trust to fail or cease to qualify for the
exemption from status of an investment company under the 1940 Act or fail or
cease to be classified as a grantor trust for United States Federal income tax
purposes.

     (e)  Notwithstanding anything in this Trust Agreement to the contrary,
without the consent of the Depositor, this Trust Agreement may not be amended in
a manner which imposes any additional obligation on the Depositor.

     (f)  In the event that any amendment to this Trust Agreement is made, the
Administrative Agents shall promptly provide to the Depositor a copy of such
amendment.

                                       41
<PAGE>
 
     (g)  Neither the Property Trustee nor the Delaware Trustee shall be
required to enter into any amendment to this Trust Agreement which affects its
own rights, duties or immunities under this Trust Agreement. The Property
Trustee shall be entitled to receive an Opinion of Counsel and an Officers'
Certificate stating that any amendment to this Trust Agreement is in compliance
with this Trust Agreement.

     Section 10.3. Separability.

     In case any provision in this Trust Agreement or in the Trust Securities
Certificates shall be invalid, illegal or unenforceable, the validity, legality
and enforceability of the remaining provisions shall not in any way be affected
or impaired thereby.

     Section 10.4. Governing Law.

     THIS TRUST AGREEMENT AND THE RIGHTS AND OBLIGATIONS OF EACH OF THE
SECURITYHOLDERS, THE TRUST AND THE TRUSTEES WITH RESPECT TO THIS TRUST AGREEMENT
AND THE TRUST SECURITIES SHALL BE CONSTRUED IN ACCORDANCE WITH AND GOVERNED BY
THE LAWS OF THE STATE OF DELAWARE.

     Section 10.5. Payments Due on Non-Business Day.

     If the date fixed for any payment on any Trust Security shall be a day that
is not a Business Day, then such payment need not be made on such date but may
be made on the next succeeding day that is a Business Day (except as otherwise
provided in Sections 4.1(a) and 4.2(d)), with the same force and effect as
though made on the date fixed for such payment, and no interest shall accrue
thereon for the period after such date.

     Section 10.6. Successors.

     This Trust Agreement shall be binding upon and shall inure to the
benefit of any successor to the Depositor, the Trust or the Relevant Trustee,
including any successor by operation of law. Except in connection with a
consolidation, merger or sale involving the Depositor that is permitted under
Article Eight of the Indenture and pursuant to which the assignee agrees in
writing to perform the Depositor's obligations hereunder, the Depositor shall
not assign its obligations hereunder.

     Section 10.7. Headings.

     The Article and Section headings are for convenience only and shall not
affect the construction of this Trust Agreement.

     Section 10.8. Reports, Notices and Demands.

     Any report, notice, demand or other communication which by any provision of
this Trust Agreement is required or permitted to be given or served to or upon
any Securityholder or the Depositor may be given or served in writing by deposit
thereof, first-class postage prepaid, in the United States mail, hand delivery
or facsimile transmission, in each case, addressed, (a) in the case of a Capital
Securityholder, to such Capital Securityholder as such Securityholder's name and
address may appear on the Securities Register; and (b) in the case of the Common
Securityholder or the Depositor, to First Bank System, Inc., 601 Second Avenue
South, Minneapolis, Minnesota 55402, Attention: Treasurer, facsimile no.: (612)
973-0965. Any notice to Capital Securityholders shall also be given to such
owners as have, within two years preceding the giving of such notice, filed
their names and addresses with the Property Trustee for that purpose. Such
notice, demand or other communication to or upon a Securityholder shall be
deemed to have been sufficiently given or made, for all purposes, upon hand
delivery, mailing or transmission.

     Any notice, demand or other communication which by any provision of this
Trust Agreement is required or permitted to be given or served to or upon the
Trust, the Property Trustee, the Delaware Trustee or the 

                                       42
<PAGE>
 
Administrative Agents shall be given in writing addressed (until another address
is published by the Trust) as follows: (a) with respect to the Property Trustee
or the Delaware Trustee to Wilmington Trust Company, 1100 North Market
Wilmington, Delaware 19890, Attention: Corporate Trust Administration, and (b)
with respect to the Administrative Agents, to them at the address above for
notices to the Depositor, marked "Attention Administrative Agents of FBS Capital
I." Such notice, demand or other communication to or upon the Trust or the
Property Trustee shall be deemed to have been sufficiently given or made only
upon actual receipt of the writing by the Trust or the Property Trustee.

     Section 10.9 Agreement Not to Petition.

     Each of the Trustees and the Depositor agree for the benefit of the
Securityholders that, until at least one year and one day after the Trust has
been terminated in accordance with Article IX, they shall not file, or join in
the filing of, a petition against the Trust under any Bankruptcy Law or
otherwise join in the commencement of any proceeding against the Trust under any
Bankruptcy Law. In the event the Depositor takes action in violation of this
Section 10.9, the Property Trustee agrees, for the benefit of Securityholders,
that at the expense of the Depositor, it shall file an answer with the
bankruptcy court or otherwise properly contest the filing of such petition by
the Depositor against the Trust or the commencement of such action and raise the
defense that the Depositor has agreed in writing not to take such action and
should be stopped and precluded therefrom and such other defenses, if any, as
counsel for the Trustee or the Trust may assert. The provisions of this Section
10.9 shall survive the termination of this Trust Agreement.

     Section 10.10 Trust Indenture Act; Conflict with Trust Indenture Act.

     (a)  This Trust Agreement is subject to the provisions of the Trust
Indenture Act that are required to be part of this Trust Agreement and shall, to
the extent applicable, be governed by such provisions.

     (b)  The Property Trustee shall be the only Trustee which is a trustee
for the purposes of the Trust Indenture Act.

     (c)  If any provision hereof limits, qualifies or conflicts with
another provision hereof which is required to be included in this Trust
Agreement by any of the provisions of the Trust Indenture Act, such required
provision shall control. If any provision of this Trust Agreement modifies or
excludes any provision of the Trust Indenture Act which may be so modified or
excluded, the latter provision shall be deemed to apply to this Trust Agreement
as so modified or excluded, as the case may be.

     (d)  The application of the Trust Indenture Act to this Trust Agreement
shall not affect the nature of the Securities as equity securities representing
undivided beneficial interests in the assets of the Trust.

     Section 10.11 Acceptance of Terms of Trust Agreement, Guarantee and
Indenture.

     THE RECEIPT AND ACCEPTANCE OF A TRUST SECURITY OR ANY INTEREST THEREIN BY
OR ON BEHALF OF A SECURITYHOLDER OR ANY BENEFICIAL OWNER, WITHOUT ANY SIGNATURE
OR FURTHER MANIFESTATION OF ASSENT, SHALL CONSTITUTE THE UNCONDITIONAL
ACCEPTANCE BY THE SECURITYHOLDER AND ALL OTHERS HAVING A BENEFICIAL INTEREST IN
SUCH TRUST SECURITY OF ALL THE TERMS AND PROVISIONS OF THIS TRUST AGREEMENT AND
AGREEMENT TO THE SUBORDINATION PROVISIONS AND OTHER TERMS OF THE GUARANTEE AND
THE INDENTURE, AND SHALL CONSTITUTE THE AGREEMENT OF THE TRUST, SUCH
SECURITYHOLDER AND SUCH OTHERS THAT THE TERMS AND PROVISIONS OF THIS TRUST
AGREEMENT SHALL BE BINDING, OPERATIVE AND EFFECTIVE AS BETWEEN THE TRUST AND
SUCH SECURITYHOLDER AND SUCH OTHERS.

     THE RECEIPT AND ACCEPTANCE OF A TRUST SECURITY OR ANY INTEREST THEREIN
BY ANY PERSON WHO IS USING FOR SUCH PURCHASE THE ASSETS OF AN 

                                       43
<PAGE>
 
EMPLOYEE BENEFIT PLAN SUBJECT TO TITLE I OF THE EMPLOYEE RETIREMENT INCOME
SECURITY ACT OF 1974, AS AMENDED ("ERISA") OR OF A PLAN OR INDIVIDUAL RETIREMENT
ACCOUNT SUBJECT TO SECTION 4975 OF THE CODE (ANY SUCH EMPLOYEE BENEFIT PLAN,
PLAN OR INDIVIDUAL RETIREMENT ACCOUNT, AN "ERISA PLAN") SHALL CONSTITUTE A
REPRESENTATION BY SUCH PERSON THAT (I) IF THE DEPOSITOR IS A "PARTY IN INTEREST"
OR A "DISQUALIFIED PERSON" WITH RESPECT TO SUCH ERISA PLAN, THEN SUCH SECURITY
IS BEING ACQUIRED PURSUANT TO AN EXEMPTION FROM THE PROHIBITED TRANSACTION RULES
UNDER ERISA AND THE CODE, AND (II) THE DEPOSITOR IS NOT A "FIDUCIARY," WITHIN
THE MEANING OF SECTION 3(21) OF ERISA AND THE REGULATIONS THEREUNDER, WITH
RESPECT TO SUCH PERSON'S INTEREST IN THE CAPITAL SECURITIES OR THE DEBENTURES.

                                       44
<PAGE>
 
     This instrument may be executed in any number of counterparts, each of
which so executed shall be deemed to be an original, but all such counterparts
shall together constitute but one and the same instrument.

     IN WITNESS WHEREOF, the parties hereto have executed this Trust Agreement
as of the day and year first above written.

                                     First Bank System, Inc.


                                     By: /s/ David P. Grandstrand
                                         ---------------------------------------
                                     Name: David P. Grandstrand
                                     Title: Senior Vice President and Treasurer


                                     WILMINGTON TRUST COMPANY,
                                     as Property Trustee and Delaware Trustee


                                     By: /s/ Norma P. Closs
                                        ----------------------------------------
                                        Name:  Norma P. Closs
                                        Title: Vice President


                                     SUSAN E. LESTER,
                                     as Administrative Agent

 
                                      /s/ Susan E. Lester
                                    --------------------------------------------

                                     LEE R. MITAU,
                                     as Administrative Agent

                                      /s/ Lee R. Mitau
                                     -------------------------------------------
 

                                     DAVID J. PARRIN,
                                     as Administrative Agent

                                      /s/ David J. Parrin
                                    --------------------------------------------
 

                                      45
<PAGE>
 
                                                                     EXHIBIT B-1

     This Capital Security is a Global Certificate within the meaning of the
Trust Agreement hereinafter referred to and is registered in the name of The
Depository Trust Company (the "Depository") or a nominee of the Depository. This
Capital Security is exchangeable for Capital Securities registered in the name
of a person other than the Depository or its nominee only in the limited
circumstances described in the Trust Agreement and no transfer of this Capital
Security (other than a transfer of this Capital Security as a whole by the
Depository to a nominee of the Depository or by a nominee of the Depository to
the Depository or another nominee of the Depository) may be registered except in
limited circumstances.

     Unless this Capital Security is presented by an authorized representative
of The Depository Trust Company (55 Water Street, New York) to FBS Capital I or
its agent for registration of transfer, exchange or payment, and any Capital
Security issued is registered in the name of Cede & Co. or such other name as
requested by an authorized representative of The Depository Trust Company and
any payment hereon is made to Cede & Co. or such other entity as is requested by
an authorized representative of DTC, ANY TRANSFER, PLEDGE OR OTHER USE HEREOF
FOR VALUE OR OTHERWISE BY A PERSON IS WRONGFUL inasmuch as the registered owner
hereof, Cede & Co., has an interest herein.

               THE SECURITIES EVIDENCED HEREBY HAVE NOT BEEN REGISTERED UNDER
     THE U.S. SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES ACT") AND MAY
     NOT BE OFFERED, SOLD, PLEDGED OR OTHERWISE TRANSFERRED EXCEPT (A) BY THE
     INITIAL INVESTOR (1) TO A PERSON WHO THE SELLER REASONABLY BELIEVES IS A
     QUALIFIED INSTITUTIONAL BUYER WITHIN THE MEANING OF RULE 144A UNDER THE
     SECURITIES ACT PURCHASING FOR ITS OWN ACCOUNT OR FOR THE ACCOUNT OF A
     QUALIFIED INSTITUTIONAL BUYER IN A TRANSACTION MEETING THE REQUIREMENTS OF
     RULE 144A, (2) IN AN OFFSHORE TRANSACTION COMPLYING WITH RULE 903 OR RULE
     904 OF REGULATION S UNDER THE SECURITIES ACT, (3) PURSUANT TO AN EXEMPTION
     FROM REGISTRATION UNDER THE SECURITIES ACT PROVIDED BY RULE 144 THEREUNDER
     (IF AVAILABLE) OR (4) PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER
     THE SECURITIES ACT AND (B) BY SUBSEQUENT INVESTORS AS SET FORTH IN (A)
     ABOVE OR TO AN INSTITUTIONAL ACCREDITED INVESTOR IN A TRANSACTION EXEMPT
     FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT, IN EACH CASE (A)
     AND (B) IN ACCORDANCE WITH ALL APPLICABLE SECURITIES LAW OF THE STATES OF
     THE UNITED STATES AND OTHER JURISDICTIONS.

     THE CAPITAL SECURITIES WILL BE ISSUED, AND MAY BE TRANSFERRED, ONLY IN
     BLOCKS HAVING A LIQUIDATION AMOUNT OF NOT LESS THAN $100,000 (100 CAPITAL
     SECURITIES).  ANY TRANSFER, SALE OR OTHER DISPOSITION OF CAPITAL SECURITIES
     IN A BLOCK HAVING A LIQUIDATION AMOUNT OF LESS THAN $100,000 SHALL BE
     DEEMED TO BE VOID AND OF NO LEGAL EFFECT WHATSOEVER.  ANY SUCH TRANSFEREE
     SHALL BE DEEMED NOT TO BE THE HOLDER OF SUCH CAPITAL SECURITIES FOR ANY
     PURPOSE, INCLUDING BUT NOT LIMITED TO THE RECEIPT OF DISTRIBUTIONS ON SUCH
     CAPITAL SECURITIES, AND SUCH TRANSFEREE SHALL BE DEEMED TO HAVE NO INTEREST
     WHATSOEVER IN SUCH CAPITAL SECURITIES.

                                     B-1-1
<PAGE>
 
CERTIFICATE NUMBER
                                                    NUMBER OF CAPITAL SECURITIES


                                   CUSIP NO.

                   CERTIFICATE EVIDENCING CAPITAL SECURITIES

                                       OF

                                 FBS CAPITAL I

                           8.09% CAPITAL SECURITIES,

                (LIQUIDATION AMOUNT $1,000 PER CAPITAL SECURITY)

     FBS Capital I, a statutory business trust formed under the laws of the
State of Delaware (the "Trust"), hereby certifies that                      (the
"Holder") is the registered owner of            (   ) Capital Securities of the
Trust representing an undivided beneficial interest in the assets of the Trust
and designated the FBS Capital I 8.09% Capital Securities (liquidation amount
$1,000 per Capital Security) (the "Capital Securities"). The Capital Securities
are transferable on the books and records of the Trust, in person or by a duly
authorized attorney, upon surrender of this certificate duly endorsed and in
proper form for transfer as provided in Section 5.4 of the Trust Agreement (as
defined below). The designations, rights, privileges, restrictions, preferences
and other terms and provisions of the Capital Securities are set forth in, and
this certificate and the Capital Securities represented hereby are issued and
shall in all respects be subject to the terms and provisions of, the Amended and
Restated Trust Agreement of the Trust dated as of November 26, 1996, as the same
may be amended from time to time (the "Trust Agreement") including the
designation of the terms of Capital Securities as set forth therein. The Holder
is entitled to the benefits of the Guarantee Agreement entered into by First
Bank System, Inc., a Delaware corporation, and Wilmington Trust Company, as
guarantee trustee, dated as of November 26, 1996, (the "Guarantee"), to the
extent provided therein. The Trust will furnish a copy of the Trust Agreement
and the Guarantee to the Holder without charge upon written request to the Trust
at its principal place of business or registered office.

     Upon receipt of this certificate, the Holder is bound by the Trust
Agreement and is entitled to the benefits thereunder.

     In Witness Whereof, one of the Administrative Agents of the Trust has
executed this certificate this 26th day of November, 1996.

                                       FBS CAPITAL I


                                       By:_____________________________________
                                          Name:
                                          Administrative Agent

                                     B-1-2
<PAGE>
 
                                  ASSIGNMENT

     For Value Received, the undersigned assigns and transfers this Capital
Security to:



____________________(Insert assignee's social security or tax identification
                    number)



                          (Insert address and zip code of assignee)

and irrevocably appoints



agent to transfer this Capital Security Certificate on the books of the Trust.
The agent may substitute another to act for him or her.

Date:

Signature(s):
 
  __________________________________________________________________________
 
  __________________________________________________________________________
 (Sign exactly as your name appears on the other side of this Capital Security
                                 Certificate)

NOTICE:  THE SIGNATURE(S) SHOULD BE GUARANTEED BY AN ELIGIBLE GUARANTOR
INSTITUTION (BANKS, STOCKBROKERS, SAVINGS AND LOAN ASSOCIATIONS AND CREDIT
UNIONS WITH MEMBERSHIP IN AN APPROVED SIGNATURE GUARANTEE MEDALLION PROGRAM),
PURSUANT TO S.E.C. RULE 17AD-15.

                                     B-1-3
<PAGE>
 
                                                                     EXHIBIT B-2

     If the Capital Security is to be a Global Certificate     INSERT--This
Capital Security is a Global Certificate within the meaning of the Trust
Agreement hereinafter referred to and is registered in the name of The
Depository Trust Company (the "Depository") or a nominee of the Depository. This
Capital Security is exchangeable for Capital Securities registered in the name
of a person other than the Depository or its nominee only in the limited
circumstances described in the Trust Agreement and no transfer of this Capital
Security (other than a transfer of this Capital Security as a whole by the
Depository to a nominee of the Depository or by a nominee of the Depository to
the Depository or another nominee of the Depository) may be registered except in
limited circumstances.

     Unless this Capital Security is presented by an authorized representative
of The Depository Trust Company (55 Water Street, New York) to FBS Capital I or
its agent for registration of transfer, exchange or payment, and any Capital
Security issued is registered in the name of Cede & Co. or such other name as
requested by an authorized representative of The Depository Trust Company and
any payment hereon is made to Cede & Co. or such other entity as is requested by
an authorized representative of DTC, ANY TRANSFER, PLEDGE OR OTHER USE HEREOF
FOR VALUE OR OTHERWISE BY A PERSON IS WRONGFUL inasmuch as the registered owner
hereof, Cede & Co., has an interest herein.

     THE CAPITAL SECURITIES WILL BE ISSUED, AND MAY BE TRANSFERRED, ONLY IN
     BLOCKS HAVING A LIQUIDATION AMOUNT OF NOT LESS THAN $100,000 (100 CAPITAL
     SECURITIES).  ANY TRANSFER, SALE OR OTHER DISPOSITION OF CAPITAL SECURITIES
     IN A BLOCK HAVING A LIQUIDATION AMOUNT OF LESS THAN $100,000 SHALL BE
     DEEMED TO BE VOID AND OF NO LEGAL EFFECT WHATSOEVER.  ANY SUCH TRANSFEREE
     SHALL BE DEEMED NOT TO BE THE HOLDER OF SUCH CAPITAL SECURITIES FOR ANY
     PURPOSE, INCLUDING BUT NOT LIMITED TO THE RECEIPT OF DISTRIBUTIONS ON SUCH
     CAPITAL SECURITIES, AND SUCH TRANSFEREE SHALL BE DEEMED TO HAVE NO INTEREST
     WHATSOEVER IN SUCH CAPITAL SECURITIES.

                                     B-2-1
<PAGE>
 
CERTIFICATE NUMBER
                                                    NUMBER OF CAPITAL SECURITIES


                                   CUSIP NO.

                   CERTIFICATE EVIDENCING CAPITAL SECURITIES

                                       OF

                                 FBS CAPITAL I

                           8.09% CAPITAL SECURITIES,

                (LIQUIDATION AMOUNT $1,000 PER CAPITAL SECURITY)

     FBS Capital I, a statutory business trust formed under the laws of the
State of Delaware (the "Trust"), hereby certifies that                      (the
"Holder") is the registered owner of            (   ) Capital Securities of the
Trust representing an undivided beneficial interest in the assets of the Trust
and designated the FBS Capital I 8.09% Capital Securities (liquidation amount
$1,000 per Capital Security) (the "Capital Securities"). The Capital Securities
are transferable on the books and records of the Trust, in person or by a duly
authorized attorney, upon surrender of this certificate duly endorsed and in
proper form for transfer as provided in Section 5.4 of the Trust Agreement (as
defined below). The designations, rights, privileges, restrictions, preferences
and other terms and provisions of the Capital Securities are set forth in, and
this certificate and the Capital Securities represented hereby are issued and
shall in all respects be subject to the terms and provisions of, the Amended and
Restated Trust Agreement of the Trust dated as of November 26, 1996, as the same
may be amended from time to time (the "Trust Agreement") including the
designation of the terms of Capital Securities as set forth therein. The Holder
is entitled to the benefits of the Guarantee Agreement entered into by First
Bank System, Inc., a Delaware corporation, and Wilmington Trust Company, as
guarantee trustee, dated as of November 26, 1996, (the "Guarantee"), to the
extent provided therein. The Trust will furnish a copy of the Trust Agreement
and the Guarantee to the Holder without charge upon written request to the Trust
at its principal place of business or registered office.

     Upon receipt of this certificate, the Holder is bound by the Trust
Agreement and is entitled to the benefits thereunder.

     In Witness Whereof, one of the Administrative Agents of the Trust has
executed this certificate this 26th day of November, 1996.

                                      FBS CAPITAL I


                                      By:______________________________________
                                         Name:
                                         Administrative Agent

                                     B-2-2
<PAGE>
 
                                  ASSIGNMENT

     For Value Received, the undersigned assigns and transfers this Capital
Security to:



____________________(Insert assignee's social security or tax identification
                    number)



                          (Insert address and zip code of assignee)

and irrevocably appoints


agent to transfer this Capital Security Certificate on the books of the Trust.
The agent may substitute another to act for him or her.

Date:

Signature(s):
 
  __________________________________________________________________________
 
  __________________________________________________________________________
 (Sign exactly as your name appears on the other side of this Capital Security
                                 Certificate)

NOTICE:  THE SIGNATURE(S) SHOULD BE GUARANTEED BY AN ELIGIBLE GUARANTOR
INSTITUTION (BANKS, STOCKBROKERS, SAVINGS AND LOAN ASSOCIATIONS AND CREDIT
UNIONS WITH MEMBERSHIP IN AN APPROVED SIGNATURE GUARANTEE MEDALLION PROGRAM),
PURSUANT TO S.E.C. RULE 17AD-15.

                                     B-2-3
<PAGE>
 
                                                                       EXHIBIT C



The Depository Trust Company,
55 Water Street, 49th Floor,
New York, New York 10041-0099

Attention:     Declan Lewis
               General Counsel's Office

Re:   FBS Capital I 8.09% Capital Securities

Ladies and Gentlemen:

     The purpose of this letter is to set forth certain matters relating to the
issuance and deposit with The Depository Trust Company ("DTC") of the 8.09%
Capital Securities (the "Capital Securities"), of FBS Capital I, a Delaware
business trust (the "Issuer"), formed pursuant to a Trust Agreement between
First Bank System, Inc. ("FBS") and Wilmington Trust Company, as Property
Trustee, Wilmington Trust Company, as Delaware Trustee, and the Administrative
Agents named therein. The payment of distributions on the Capital Securities,
and payments due upon liquidation of Issuer or redemption of the Capital
Securities, to the extent the Issuer has funds available for the payment thereof
are guaranteed by FBS to the extent set forth in a Guarantee Agreement dated
November 26, 1996 by FBS with respect to the Capital Securities. FBS and the
Issuer propose to sell the Capital Securities to Goldman, Sachs & Co., Lehman
Brothers, Inc., Merrill Lynch, Pierce, Fenner & Smith Incorporated, Morgan
Stanley & Co. Incorporated, Dain Bosworth Incorporated and Piper Jaffray Inc.
(collectively, the "Initial Purchasers") pursuant to a Purchase Agreement dated
November 19, 1996 by and among the Initial Purchasers, the Issuer and FBS and
the Initial Purchasers wish to take delivery of the Capital Securities through
DTC. Wilmington Trust Company is acting as transfer agent and registrar with
respect to the Capital Securities (the "Transfer Agent and Registrar").

     To induce DTC to accept the Capital Securities as eligible for deposit at
DTC, and to act in accordance with DTC's rules with respect to the Capital
Securities, the Issuer, the Transfer Agent and Registrar and DTC agree among
each other as follows:

     1. Prior to the closing of the sale of the Capital Securities to the
Initial Purchasers, which is expected to occur on or about November 26, 1996,
there shall be deposited with DTC one or more global certificates (individually
and collectively, the "Global Certificate") registered in the name of DTC's
Capital Securities nominee, Cede & Co., representing an aggregate of 300,000
Capital Securities and bearing the following legend:

          Unless this certificate is presented by an authorized representative
          of The Depository Trust Company, a New York corporation ("DTC"), to
          Issuer or its agent for registration of transfer, exchange, or
          payment, and any certificate issued is registered in the name of Cede
          & Co. or in such other name as is requested by an authorized
          representative of DTC (and any payment is made to Cede & Co. or to
          such other entity as is requested by an authorized representative of
          DTC), ANY TRANSFER, PLEDGE, OR OTHER USE HEREOF FOR VALUE OR OTHERWISE
          BY OR TO ANY PERSON IS WRONGFUL inasmuch as the registered owner
          hereof, Cede & Co., has an interest herein.

     2. The Amended and Restated Trust Agreement of the Issuer provides for the
voting by holders of the Capital Securities under certain limited circumstances.
The Issuer shall establish a record date for such purposes and shall, to the
extent possible, give DTC notice of such record date not less than 15 calendar
days in advance of such record date.

                                      C-1
<PAGE>
 
     3. In the event of a stock split, conversion, recapitalization,
reorganization or any other similar transaction resulting in the cancellation of
all or any part of the Capital Securities outstanding, the Issuer or the
Transfer Agent and Registrar shall send DTC a notice of such event at least 5
business days prior to the effective date of such event.

     4. In the event of distribution on, or an offering or issuance of rights
with respect to, the Capital Securities outstanding, the Issuer or the Transfer
Agent and Registrar shall send DTC a notice specifying: (a) the amount of and
conditions, if any, applicable to the payment of any such distribution or any
such offering or issuance of rights; (b) any applicable expiration or deadline
date, or any date by which any action on the part of the holders of Capital
Securities is required; and (c) the date any required notice is to be mailed by
or on behalf of the Issuer to holders of Capital Securities or published by or
on behalf of the Issuer (whether by mail or publication, the "Publication
Date"). Such notice shall be sent to DTC by a secure means (e.g., legible
telecopy, registered or certified mail, overnight delivery) in a timely manner
designed to assure that such notice is in DTC's possession no later than the
close of business on the business day before the Publication Date. The Issuer or
the Transfer Agent and Registrar will forward such notice either in a separate
secure transmission for each CUSIP number or in a secure transmission of
multiple CUSIP numbers (if applicable) that includes a manifest or list of each
CUSIP number submitted in that transmission. (The party sending such notice
shall have a method to verify subsequently the use of such means and the
timeliness of such notice.) The Publication Date shall be not less than 30
calendar days nor more than 60 calendar days prior to the payment of any such
distribution or any such offering or issuance of rights with respect to the
Capital Securities. After establishing the amount of payment to be made on the
Capital Securities, the Issuer or the Transfer Agent and Registrar will notify
DTC's Dividend Department of such payment 5 business days prior to payment date.
Notices to DTC's Dividend Department by telecopy shall be sent to (212) 709-
1723. Such notices by mail or by any other means shall be sent to:

          Manager, Announcements
          Dividend Department
          The Depository Trust Company
          7 Hanover Square, 23rd Floor
          New York, New York 10004-2695

     The Issuer or the Transfer Agent and Registrar shall confirm DTC's receipt
of such telecopy by telephoning the Dividend Department at (212) 709-1270.

     5. In the event of a redemption by the Issuer of the Capital Securities,
notice specifying the terms of the redemption and the Publication Date of such
notice shall be sent by the Issuer or the Transfer Agent and Registrar to DTC
not less than 30 calendar days prior to such event by a secure means in the
manner set forth in paragraph 4. Such redemption notice shall be sent to DTC's
Call Notification Department at (516) 227-4164 or (516) 227-4190, and receipt of
such notice shall be confirmed by telephoning (516) 227-4070. Notice by mail or
by any other means shall be sent to:

          Call Notification Department
          The Depository Trust Company
          711 Stewart Avenue
          Garden City, New York 11530-4719

     6. In the event of any invitation to tender the Capital Securities, notice
specifying the terms of the tender and the Publication Date of such notice shall
be sent by the Issuer or the Transfer Agent and Registrar to DTC by a secure
means and in a timely manner as described in paragraph 4. Notices to DTC
pursuant to this paragraph and notices of other corporate actions (including
mandatory tenders, exchanges and capital changes) shall be sent, unless
notification to another department is expressly provided for herein, by telecopy
to DTC's Reorganization Department at (212) 709-1093 or (212) 709-1094 and
receipt of such notice shall be confirmed by telephoning (212) 709-6884, or by
mail or any other means to:

          Manager, Reorganization Department
          Reorganization Window

                                      C-2
<PAGE>
 
          The Depository Trust Company
          7 Hanover Square, 23rd Floor
          New York, New York 10004-2695

     7. All notices and payment advices sent to DTC shall contain the CUSIP
number or numbers of the Capital Securities and the accompanying designation of
the Capital Securities, which, as of the date of this letter, is "FBS Capital I
8.09% Capital Securities."

     8. Distribution payments or other cash payments with respect to the Capital
Securities evidenced by the Global Certificate shall be received by Cede & Co.,
as nominee of DTC, or its registered assigns in same day funds on each payment
date (or in accordance with existing arrangements between the Issuer or the
Transfer Agent and Registrar and DTC). Such payments shall be made payable to
the order of Cede & Co., and shall be addressed as follows:

          Redemption Department
          The Depository Trust Company
          7 Hanover Square, 23rd Floor
          New York, New York 10004-2695

     9. DTC may by prior written notice direct the Issuer and the Transfer Agent
and Registrar to use any other telecopy number or address of DTC as the number
or address to which notices or payments may be sent.

     10. In the event of a conversion, redemption, or any other similar
transaction (e.g., tender made and accepted in response to the Issuer's or the
Transfer Agent and Registrar's invitation) necessitating a reduction in the
aggregate number of Capital Securities outstanding evidenced by Global
Certificates, DTC, in its discretion: (a) may request the Issuer or the Transfer
Agent and Registrar to issue and countersign a new Global Certificate; or (b)
may make an appropriate notation on the Global Certificate indicating the date
and amount of such reduction.

     11. DTC may discontinue its services as a securities depositary with
respect to the Capital Securities at any time by giving reasonable written
notice to the Issuer and the Transfer Agent and Registrar (at which time DTC
will confirm with the Issuer or the Transfer Agent and Registrar the aggregate
number of Capital Securities deposited with it) and discharging its
responsibilities with respect thereto under applicable law. Under such
circumstances, the Issuer may determine to make alternative arrangements for
book-entry settlement for the Capital Securities, make available one or more
separate global certificates evidencing Capital Securities to any Participant
having Capital Securities credited to its DTC account, or issue definitive
Capital Securities to the beneficial holders thereof, and in any such case, DTC
agrees to cooperate fully with the Issuer and the Transfer Agent and Registrar,
and to return the Global Certificate, duly endorsed for transfer as directed by
the Issuer or the Transfer Agent and Registrar, together with any other
documents of transfer reasonably requested by the Issuer or the Transfer Agent
and Registrar.

     12. In the event that the Issuer determines that beneficial owners of
Capital Securities shall be able to obtain definitive Capital Securities, the
Issuer or the Transfer Agent and Registrar shall notify DTC of the availability
of certificates. In such event, the Issuer or the Transfer Agent and Registrar
shall issue, transfer and exchange certificates in appropriate amounts, as
required by DTC and others, and DTC agrees to cooperate fully with the Issuer
and the Transfer Agent and Registrar and to return the Global Certificate, duly
endorsed for transfer as directed by the Issuer or the Transfer Agent and
Registrar, together with any other documents of transfer reasonably requested by
the Issuer or the Transfer Agent and Registrar.

     13. This letter may be executed in any number of counterparts, each of
which when so executed shall be deemed to be an original, but all such
counterparts shall together constitute but one and the same instrument.

                                      C-3
<PAGE>
 
     Nothing herein shall be deemed to require the Transfer Agent and Registrar
to advance funds on behalf of FBS Capital I.

                              Very truly yours,

                              FBS CAPITAL I
                              By First Bank System, Inc. as depositor

                              By:===============================================
                                 Name: David P. Grandstrand
                                 Title: Senior Vice President, Treasurer



                              WILMINGTON TRUST COMPANY,
                              as Delaware Trustee, Property Trustee and Transfer
                              Agent and Registrar

 
                              By:===============================================
                                 Name:
                                 Title:



RECEIVED AND ACCEPTED:

THE DEPOSITORY TRUST COMPANY


By:_____________________________
       Authorized Officer

                                      C-4
<PAGE>
 
                                                                       EXHIBIT D

                      THIS CERTIFICATE IS NOT TRANSFERABLE

CERTIFICATE NUMBER
                                                     NUMBER OF COMMON SECURITIES


                    CERTIFICATE EVIDENCING COMMON SECURITIES

                                       OF

                                 FBS CAPITAL I

                            8.09% COMMON SECURITIES
                (LIQUIDATION AMOUNT $1,000 PER COMMON SECURITY)

     FBS Capital I, a statutory business trust formed under the laws of the
State of Delaware (the "Trust"), hereby certifies that First Bank System, Inc.
(the "Holder") is the registered owner of nine thousand two hundred and seventy-
nine (9,279) common securities of the Trust representing beneficial interests of
the Trust and designated the 8.09% Common Securities (liquidation amount $1,000
per Common Security) (the "Common Securities"). In accordance with Section 5.10
of the Trust Agreement (as defined below) the Common Securities are not
transferable and any attempted transfer hereof shall be void. The designations,
rights, privileges, restrictions, preferences and other terms and provisions of
the Common Securities are set forth in, and this certificate and the Common
Securities represented hereby are issued and shall in all respects be subject to
the terms and provisions of, the Amended and Restated Trust Agreement of the
Trust dated as of November 26, 1996, as the same may be amended from time to
time (the "Trust Agreement") including the designation of the terms of the
Common Securities as set forth therein. The Trust will furnish a copy of the
Trust Agreement to the Holder without charge upon written request to the Trust
at its principal place of business or registered office.

     Upon receipt of this certificate, the Holder is bound by the Trust
Agreement and is entitled to the benefits thereunder.

     In Witness Whereof, one of the Administrative Agents of the Trust has
executed this certificate this 26th day of November, 1996.


                                             FBS CAPITAL I


                                             By:________________________________
                                                Name:
                                                Administrative Agent

                                      D-1
<PAGE>
 
                                                                       EXHIBIT E

                   AGREEMENT AS TO EXPENSES AND LIABILITIES

     AGREEMENT dated as of November 26, 1996, between First Bank System, Inc., a
Delaware corporation ("FBS"), and FBS Capital I, a Delaware business trust (the
"Trust").

     WHEREAS, the Trust intends to issue its 8.09% Common Securities (the
"Common Securities") to and receive Debentures from FBS and to issue and sell
8.09% Capital Securities (the "Private Capital Securities") with such powers,
preferences and special rights and restrictions as are set forth in the Amended
and Restated Trust Agreement of the Trust dated as of November 26, 1996 as the
same may be amended from time to time (the "Trust Agreement");

     WHEREAS, FBS will issue the Debentures;

     WHEREAS, the Trust may issues a new series of 8.09% capital securities
(the "Exchange Capital Securities" and, together with the "Private Capital
Securities," the "Capital Securities") in connection with an exchange offer (the
"Exchange Offer") registered under the Securities Act or 1933, as amended;

     NOW, THEREFORE, in consideration of the purchase by the Trust of the
Debentures, which purchase FBS acknowledges will be made in reliance upon the
execution and delivery of this Agreement, FBS and Trust hereby agree as follows:


                                   ARTICLE I

     SECTION 1.1. Guarantee by FBS.

     Subject to the terms and conditions hereof, FBS hereby irrevocably and
unconditionally guarantees to each person or entity to whom the Trust is now or
hereafter becomes indebted or liable (the "Beneficiaries") the full payment,
when and as due, of any and all Obligations (as hereinafter defined) to such
Beneficiaries. As used herein, "Obligations" means any costs, expenses or
liabilities of the Trust, other than obligations of the Trust to pay to holders
of any Capital Securities or other similar interests in the Trust the amounts
due such holders pursuant to the terms of the Capital Securities or such other
similar interests, as the case may be. This Agreement is intended to be for the
benefit of, and to be enforceable by, all such Beneficiaries, whether or not
such Beneficiaries have received notice hereof.

     SECTION 1.2. Term of Agreement.

     This Agreement shall terminate and be of no further force and effect
upon the later of (a) the date on which full payment has been made of all
amounts payable to all holders of all the Capital Securities (whether upon
redemption, liquidation, exchange or otherwise) and (b) the date on which there
are no Beneficiaries remaining; provided, however, that this Agreement shall
continue to be effective or shall be reinstated, as the case may be, if at any
time any holder of Capital Securities or any Beneficiary must restore payment of
any sums paid under the Capital Securities, under any Obligation, under the
Guarantee Agreement dated the date hereof by FBS and Wilmington Trust Company,
as guarantee, under the New Guarantee Agreement entered into to replace such
Guarantee Agreement by such parties in connection with the Exchange Offer,
trustee or under this Agreement for any reason whatsoever. This Agreement is
continuing, irrevocable, unconditional and absolute.

     SECTION 1.3. Waiver of Notice.

     FBS hereby waives notice of acceptance of this Agreement and of any
Obligation to which it applies or may apply, and FBS hereby waives presentment,
demand for payment, protest, notice of nonpayment, notice of dishonor, notice of
redemption and all other notices and demands.

                                      E-1
<PAGE>
 
     SECTION 1.4. No Impairment.

     The obligations, covenants, agreements and duties of FBS under this
Agreement shall in no way be affected or impaired by reason of the happening
from time to time of any of the following:

     (a) the extension of time for the payment by the Trust of all or any
portion of the Obligations or for the performance of any other obligation under,
arising out of, or in connection with, the obligations;

     (b) any failure, omission, delay or lack of diligence on the part of the
Beneficiaries to enforce, assert or exercise any right, privilege, power or
remedy conferred on the Beneficiaries with respect to the Obligations or any
action on the part of the Trust granting indulgence or extension of any kind; or

     (c) the voluntary or involuntary liquidation, dissolution, sale of any
collateral, receivership, insolvency, bankruptcy, assignment for the benefit of
creditors, reorganization, arrangement, composition or readjustment of debt of,
or other similar proceedings affecting, the Trust or any of the assets of the
Trust.

There shall be no obligation of the Beneficiaries to give notice to, or obtain
the consent of, FBS with respect to the happening of any of the foregoing.

     SECTION 1.5. Enforcement.

     A Beneficiary may enforce this Agreement directly against FBS and FBS
waives any right or remedy to require that any action be brought against the
Trust or any other person or entity before proceeding against FBS.

     SECTION 1.6. Subrogation.

     FBS shall be subrogated to all (if any) rights of the Trust in respect of
any amounts paid to the Beneficiaries by FBS under this Agreement; provided,
however, that FBS shall not (except to the extent required by mandatory
provisions of law) be entitled to enforce or exercise any rights which it may
acquire by way of subrogation or any indemnity, reimbursement or other
agreement, in all cases as a result of payment under this Agreement, if, at the
time of any such payment, any amounts are due and unpaid under this Agreement.


                                   ARTICLE II

     SECTION 2.1. Binding Effect.

     All guarantees and agreements contained in this Agreement shall bind the
successors, assigns, receivers, trustees and representatives of FBS and shall
inure to the benefit of the Beneficiaries.

     SECTION 2.2. Amendment.

     So long as there remains any Beneficiary or any Capital Securities of any
series are outstanding, this Agreement shall not be modified or amended in any
manner adverse to such Beneficiary or to the holders of the Capital Securities.

     SECTION 2.3. Notices.

     Any notice, request or other communication required or permitted to be
given hereunder shall be given in writing by delivering the same against receipt
therefor by facsimile transmission (confirmed by mail), telex or by registered
or certified mail, addressed as follows (and if so given, shall be deemed given
when mailed or upon receipt of an answer-back, if sent by telex):

                                      E-2
<PAGE>
 
          FBS Capital I
          c/o Wilmington Trust Company
          1100 North Market
          Wilmington, Delaware
          Facsimile No.:  (302) 651-1576
          Attention: Corporate Trust Department


          First Bank System, Inc.
          601 Second Avenue South
          Minneapolis, Minnesota 55402
          Facsimile No.: (612) 973-0965
          Attention: Treasurer

          SECTION 2.4. THIS AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED AND
INTERPRETED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK.

          THIS AGREEMENT is executed as of the day and year first above written.


                                             FIRST BANK SYSTEM, INC.


                                             By:________________________________
                                                Name:
                                                Title:


                                             FBS CAPITAL I


                                             By:________________________________
                                                Name:
                                                Administrative Agent

                                      E-3
<PAGE>
 
                                                                       EXHIBIT F

                        FORM OF TRANSFER CERTIFICATE __
                      BY INSTITUTIONAL ACCREDITED INVESTOR


Wilmington Trust Company
1100 North Market
Wilmington, Delaware  19899
Attention:  Corporate Trust Department


     Re:  FBS Capital (the "Trust") 8.09% Capital Securities (the "Capital
Securities")

Ladies and Gentlemen:

     We represent, warrant and agree with you as follows with regard to the
Capital Securities purchased by us and described in the confidential Offering
Circular dated November 19, 1996 (the "Offering Circular").

     1.   We are an "institutional investor" that is an "accredited investor"
within the meaning of subparagraph (a)(1), (2), (3) or (7) of Rule 501 under the
Securities Act of 1933, as amended (the "Securities Act"). In addition, if we
are buying for one or more accounts for which we are acting as fiduciary or
agent and we are not a bank (as defined in Section 3(a)(2) of the Securities Act
or a savings and loan association or other institution (as defined in Section
3(a)(5)(A) of the Securities Act), each such account is an institutional
investor and an accredited investor on a like basis.

     2.   We are acquiring the Capital Securities for our own account or for an
account for which we are acting as fiduciary or agent in a minimum amount of not
less than $100,000 Liquidation Amount for each such account. We acknowledge and
agree that the Capital Securities purchased by us will be issued in certificated
form bearing a legend to the effect of paragraph 5 and may not be exchanged for
Capital Securities in book-entry form. We further acknowledge and agree that the
provisions of this paragraph 2 and those of paragraph 3 below will apply to each
Capital Security purchased by us until such time s such Capital Security is
transferred in compliance with the provisions of paragraph 3.

     3.   We understand that the Capital Securities have not been registered
under the Securities Act and we agree that the Capital Securities purchased by
us may be reoffered, resold, pledged or otherwise transferred only:

          (i)  (a) to a person who the seller reasonably believes is a
     "qualified institutional buyer" within the meaning of Rule 144A under the
     Securities Act, purchasing for its own account or the account of a
     qualified institutional buyer in a transaction meeting the requirement of
     Rule 144A;

               (b) in an offshore transaction complying with Rule 903 or 904 of
     Regulation S under the Securities Act;

               (c) pursuant to an exemption from registration under the
     Securities Act provided by Rule 144 thereunder (if available); or

               (d) pursuant to an effective registration statement under the
     Securities Act; and

          (ii) in accordance with all applicable securities laws of the
     United States and other jurisdictions.

                                      F-1
<PAGE>
 
     4.   We have such knowledge and experience in financial and business
matters that we are capable of evaluating the merits and risk of an  investment
in the Capital Securities, we, and any accounts for which we are acting are able
to bear the economic risk of purchasing such Capital Securities and we have
received a copy of the Offering Circular.

     5.   We acknowledge that the Capital Securities will bear a legend to
the following effect unless the Property Trustee determines otherwise
consistently with applicable law:

          "THE SECURITIES EVIDENCED HEREBY HAVE NOT BEEN REGISTERED UNDER THE
     U.S. SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES ACT") AND MAY NOT
     BE OFFERED, SOLD, PLEDGED OR OTHERWISE TRANSFERRED EXCEPT (A) BY THE
     INITIAL INVESTOR (1) TO PERSON WHO THE SELLER REASONABLY BELIEVES IS A
     QUALIFIED INSTITUTIONAL BUYER WITHIN THE MEANING OF RULE 144A UNDER THE
     SECURITIES ACT PURCHASING FOR ITS OWN ACCOUNT OR FOR THE ACCOUNT OF A
     QUALIFIED INSTITUTIONAL BUYER IN A TRANSACTION MEETING THE REQUIREMENTS OF
     RULE 144A, (2) IN AN OFFSHORE TRANSACTION COMPLYING WITH RULE 903 OR RULE
     904 OF REGULATION S UNDER THE SECURITIES ACT, (3) PURSUANT TO AN EXEMPTION
     FROM REGISTRATION UNDER THE SECURITIES ACT PROVIDED BY RULE 144 THEREUNDER
     (IF AVAILABLE) OR (4) PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER
     THE SECURITIES ACT AND (B) BY SUBSEQUENT INVESTORS AS SET FORTH IN (A)
     ABOVE OR TO AN INSTITUTIONAL ACCREDITED INVESTOR IN A TRANSACTION EXEMPT
     FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT, IN EACH CASE (A)
     AND (B) IN ACCORDANCE WITH ALL APPLICABLE SECURITIES LAWS OF THE STATES OF
     THE UNITED STATES AND OTHER JURISDICTIONS."

     6.   We acknowledge that FBS, the Trust, the Property Trustee, you and
others will rely upon our confirmations, acknowledgements and agreements set
forth herein, and we hereby irrevocably authorize such parties to produce this
letter or a copy hereof to any interested party in any administrative or legal
proceeding or official inquiry with respect to the matters covered hereby.

     7.   We acknowledge that FBS, the Trust, the Property Trustee, you and
others will rely upon our confirmations, acknowledgements and agreements set
forth herein, and we hereby irrevocably authorize such parties to produce this
letter or a copy hereof to any interested party in any administrative or legal
proceeding or official inquiry with respect to the matters covered hereby.

     8.   If we are acquiring any Capital Securities as a fiduciary or agent for
one or more accounts, we represent that we have sole investment discretion with
respect to each such account and that we have full power to make the foregoing
acknowledgements, representations and agreements with respect to each such
account and as set forth in the Notice to Investors contained in the Offering
Circular.

              THIS LETTER SHALL BE GOVERNED BY, AND CONSTRUED IN
              ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK.

 
     You, the Trust and the Initial Purchasers are entitled to rely upon this
letter and are irrevocably authorized to produce this letter or a copy hereof to
any interested party in any administrative or legal proceeding or official
inquiry

                                      F-2
<PAGE>
 
with respect to the matters covered hereby.

Dated:
                                    [Insert Name of Transferee]

 
                                    By:  ____________________

                                    Name:
                                    Title:

                                    (If the registered owner is a corporation,
                                    partnership or fiduciary, the title of the
                                    Person signing on behalf of such registered
                                    owner must be stated.)

                                      F-3
<PAGE>
 
                                                                       EXHIBIT G

                        FORM OF TRANSFER CERTIFICATE __
                              OFFSHORE TRANSACTION

Wilmington Trust Company
1100 North Market
Wilmington, Delaware  19899
Attention:  Corporate Trust Department

     Re:  FBS Capital I
          Private Capital Securities

     Reference is hereby made to the Trust Agreement, dated as of November 26,
1996 (the "Trust Agreement"), between First Bank System, Inc., Wilmington Trust
Company, as Property Trustee and Delaware Property Trustee and the
Administrative Agents named therein.  Capitalized terms used but not defined
herein shall have the meanings given to them in the Trust Agreement.

     This letter relates to $_____________ aggregate principal amount of Private
Capital Securities which are evidenced by a Global Restricted Private Capital
Security (CUSIP No. U06745AA8) and held with the Depository in the name of
[insert name of transferor] (the "Transferor"). The Transferor has requested a
transfer of such beneficial interest in the Private Capital Securities to a
Person that will take delivery thereof in a transaction effected pursuant to and
in accordance with Rule 904 under the United States Securities Act of 1933, as
amended (the "Securities Act"), and accordingly the Transferor does hereby
further certify that:

     The offer of the Private Capital Securities was not made to a person in the
United States;

          (A) either:

               (i) at the time the buy order was originated, the transferee
          was outside the United States or the Transferor and any person acting
          on its behalf reasonably believed that the transferee was outside the
          United States, or

               (ii) the transaction was executed in, on or through the
          facilities of a designated offshore securities market and neither the
          Transferor nor any person acting on its behalf knows that the
          transaction was pre-arranged with a buyer in the United States;

          (B) no directed selling efforts have been made in contravention of the
     requirements of 904(b) of Regulation S, as applicable;

          (C) the transaction is not part of a plan or scheme to evade the
     registration requirements of the Securities Act; and

          (D)  we have advised the transferee of the transfer restrictions
     applicable to the Private Capital Securities.


     You, the Trust and the Initial Purchasers are entitled to rely upon this
letter and are irrevocably authorized to produce this letter or a copy hereof to
any interested party in any administrative or legal proceeding or official
inquiry with respect to the matters covered hereby. Terms used in this
certificate and not otherwise defined in the Trust

                                      G-1
<PAGE>
 
Agreement have the meanings set forth in Regulation S under the Securities Act.

Dated:
                         [Insert Name of Transferor]

 
                         By:____________________
                              
                            Name:
                            Title:

                         (If the registered owner is a corporation, partnership 
                         or fiduciary, the title of the Person signing on behalf
                         of such registered owner must be stated.)

                                      G-2
<PAGE>
 
                                                                       EXHIBIT H

                             SECURITIES ACT LEGENDS

THE CAPITAL SECURITIES EVIDENCED HEREBY HAVE NOT BEEN REGISTERED UNDER THE U.S.
SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES ACT") AND MAY NOT BE
OFFERED, SOLD, PLEDGED OR OTHERWISE TRANSFERRED EXCEPT (A) BY THE INITIAL
INVESTOR (i) TO A PERSON WHO THE SELLER REASONABLY BELIEVES IS A QUALIFIED
INSTITUTIONAL BUYER WITHIN THE MEANING OF RULE 144A UNDER THE SECURITIES ACT
ACQUIRING THE CAPITAL SECURITIES FOR ITS OWN ACCOUNT OR FOR THE ACCOUNT OF A
QUALIFIED INSTITUTIONAL BUYER IN A TRANSACTION MEETING THE REQUIREMENTS OF RULE
144A, (ii) PURSUANT TO AN EXEMPTION FROM REGISTRATION UNDER THE SECURITIES ACT
PROVIDED BY RULE 144 THEREUNDER (IF AVAILABLE), AND (B) BY SUBSEQUENT INVESTORS
AS SET FORTH IN (A) ABOVE OR IN AN OFFSHORE TRANSACTION COMPLYING WITH RULE 903
OR RULE 904 OF REGULATION S UNDER THE SECURITIES ACT OR TO AN INSTITUTIONAL
ACCREDITED INVESTOR IN A TRANSACTION EXEMPT FROM THE REGISTRATION REQUIREMENTS
OF THE SECURITIES ACT, IN EACH CASE (A) AND (B) IN ACCORDANCE WITH ALL
APPLICABLE SECURITIES LAWS OF THE STATES OF THE UNITED STATES AND OTHER
JURISDICTIONS.

                                      H-1

<PAGE>
 
                                                                     EXHIBIT 4.7


     THIS SECURITY HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS
AMENDED (THE "SECURITIES ACT") OR ANY STATE SECURITIES LAWS.  NEITHER THIS
SECURITY NOR ANY INTEREST OR PARTICIPATION HEREIN MAY BE REOFFERED, SOLD,
ASSIGNED, TRANSFERRED, PLEDGED, ENCUMBERED OR OTHERWISE DISPOSED OF IN THE
ABSENCE OF SUCH REGISTRATION OR UNLESS SUCH TRANSACTION IS EXEMPT FROM, OR NOT
SUBJECT TO, SUCH REGISTRATION.

     THE HOLDER OF THIS SECURITY BY ITS ACCEPTANCE HEREOF AGREES TO OFFER, SELL
OR OTHERWISE TRANSFER THIS SECURITY, PRIOR TO THE DATE (THE "RESALE RESTRICTION
TERMINATION DATE") WHICH IS THREE YEARS AFTER THE LATER OF NOVEMBER 26, 1996 AND
THE LAST DATE ON WHICH THE COMPANY OR ANY "AFFILIATE" OF THE COMPANY WAS THE
OWNER OF THIS SECURITY (OR ANY PREDECESSOR OF THIS SECURITY) ONLY  (A) TO THE
COMPANY, (B) PURSUANT TO A REGISTRATION STATEMENT WHICH HAS BEEN DECLARED
EFFECTIVE UNDER THE SECURITIES ACT, (C) SO LONG AS THIS SECURITY IS ELIGIBLE FOR
RESALE PURSUANT TO RULE 144A UNDER THE SECURITIES ACT ("RULE 144A"), TO A PERSON
IT REASONABLY BELIEVES IS A "QUALIFIED INSTITUTIONAL BUYER" AS DEFINED IN RULE
144A THAT PURCHASES FOR ITS OWN ACCOUNT OR FOR THE ACCOUNT OF A QUALIFIED
INSTITUTIONAL BUYER TO WHOM NOTICE IS GIVEN THAT THE TRANSFER IS BEING MADE IN
RELIANCE ON RULE 144A, (D) PURSUANT TO OFFERS AND SALES TO NON-U.S. PERSONS THAT
OCCUR OUTSIDE THE UNITED STATES WITHIN THE MEANING OF REGULATION S UNDER THE
SECURITIES ACT, (E) TO AN INSTITUTIONAL "ACCREDITED INVESTOR" WITHIN THE MEANING
OF SUBPARAGRAPH (A)(1), (2), (3) OR (7) OF RULE 501 UNDER THE SECURITIES ACT
THAT IS ACQUIRING THIS SECURITY FOR ITS OWN ACCOUNT, OR FOR THE ACCOUNT OF SUCH
AN INSTITUTIONAL ACCREDITED INVESTOR, FOR INVESTMENT PURPOSES AND NOT WITH A
VIEW TO, OR FOR OFFER OR SALE IN CONNECTION WITH, ANY DISTRIBUTION IN VIOLATION
OF THE SECURITIES ACT, OR (F) PURSUANT TO ANY OTHER AVAILABLE EXEMPTION FROM THE
REGISTRATION REQUIREMENTS UNDER THE SECURITIES ACT, SUBJECT TO THE COMPANY'S AND
THE  TRUSTEE'S RIGHT PRIOR TO ANY SUCH OFFER, SALE OR TRANSFER (i) PURSUANT TO
CLAUSE (D), (E), OR (F) TO REQUIRE THE DELIVERY OF AN OPINION OF COUNSEL,
CERTIFICATIONS AND/OR OTHER INFORMATION SATISFACTORY TO EACH OF THEM, AND (ii)
IN EACH OF THE FOREGOING CASES, TO REQUIRE THAT A CERTIFICATE OF TRANSFER IN THE
FORM APPEARING ON THIS SECURITY IS COMPLETED AND DELIVERED BY THE TRANSFEROR
AND, IF APPLICABLE, THE TRANSFEREE TO THE TRUSTEE.

     THE HOLDER OF THIS SECURITY IS OBLIGATED, TO THE EXTENT PERMITTED BY LAW,
TO PROMPTLY TENDER THIS SECURITY IN EXCHANGE FOR A SUBSTANTIALLY IDENTICAL
SECURITY OF A DIFFERENT SERIES, IF AND WHEN SUCH EXCHANGE OFFER IS CONDUCTED BY
THE COMPANY 
<PAGE>
 
PURSUANT TO THE DEBENTURE EXCHANGE AND REGISTRATION RIGHTS AGREEMENT.


                            FIRST BANK SYSTEM, INC.

           8.09% JUNIOR SUBORDINATED DEBENTURE DUE NOVEMBER 15, 2026


Registered
No.:

     First Bank System, Inc., a corporation organized and existing under the
laws of Delaware (hereinafter called the "Company", which term includes any
successor corporation under the Indenture hereinafter referred to), for value
received, hereby promises to pay to ___________________, the principal sum of
_________________ DOLLARS ($_____________) on November 15, 2026 (the "Stated
Maturity").  The Company further promises to pay interest on said principal sum
from November 15, 1996 or from the most recent interest payment date (each such
date, an "Interest Payment Date") on which interest has been paid or duly
provided for, semi-annually (subject to deferral as set forth herein) in arrears
on May 15 and November 15 each year commencing May 15, 1997 at the rate of 8.09%
per annum, until the principal hereof shall have become due and payable, plus
Additional Interest, if any, plus Special Interest, if any, until the principal
hereof is paid or duly provided for or made available for payment and on any
overdue principal and (without duplication and to the extent that payment of
such interest is enforceable under applicable law) on any overdue installment of
interest at the rate of 8.09% per annum, compounded semi-annually.  The amount
of interest payable for any period shall be computed on the basis of twelve 30-
day months and a 360-day year.  The amount of interest payable for any partial
period shall be computed on the basis of the number of days elapsed in a 360-day
year of twelve 30-day months.  In the event that any date on which interest is
payable on this Security is not a Business Day, then a payment of the interest
payable on such date will be made on the next succeeding day which is a Business
Day (and without any interest or other payment in respect of any such delay),
except that, if such Business Day is in the next succeeding calendar year, such
payment shall be made on the immediately preceding Business Day, in each case
with the same force and effect as if made on the date the payment was originally
payable.  A "Business Day" shall mean any day other than (i) a Saturday or
Sunday, (ii) a day on which banking institutions in The City of New York are
authorized or required by law or executive order to remain closed or (iii) a day
on which the Corporate Trust Office of the Trustee, or the principal office of
the Property Trustee under the Trust Agreement (hereinafter referred to) for FBS
Capital I is closed for business.  The interest installment so payable, and
punctually paid or duly provided for, on any Interest Payment Date will, as
provided in the Indenture, be paid to the Person in whose name this Security (or
one or more Predecessor Securities) is registered at the close of business on
the Regular Record Date for such interest installment, which shall be the
Business Day immediately preceding such Interest Payment Date.  Any such
<PAGE>
 
interest installment not so punctually paid or duly provided for shall forthwith
cease to be payable to the Holder on such Regular Record Date and may either be
paid to the Person in whose name this Security (or one or more Predecessor
Securities) is registered at the close of business on a Special Record Date for
the payment of such Defaulted Interest to be fixed by the Trustee, notice
whereof shall be given to Holders of Securities of this series not less than 10
days prior to such Special Record Date, or be paid at any time in any other
lawful manner not inconsistent with the requirements of any securities exchange
on which the Securities of this series may be listed, and upon such notice as
may be required by such exchange, all as more fully provided in said Indenture.

     So long as no Event of Default has occurred and is continuing, the Company
shall have the right at any time during the term of this Security to defer
payment of interest on this Security, at any time or from time to time, for up
to 10 consecutive semi-annual interest payment periods with respect to each
deferral period (each an "Extension Period"), (during which Extension Periods
the Company shall have the right to make partial payments of interest on any
Interest Payment Date, and at the end of which the Company shall pay all
interest then accrued and unpaid (together with Additional Interest thereon to
the extent permitted by applicable law)); provided, however, that no Extension
Period shall extend beyond the Stated Maturity of the principal of this
Security; provided, further, that during any such Extension Period, the Company
shall not, and shall not permit any Subsidiary of the Company to, (i) declare or
pay any dividends or distributions or redeem, purchase, acquire or make a
liquidation payment with respect to, any of the Company's capital stock (which
includes common and preferred stock), or (ii) make any payment of principal of
or interest or premium, if any, on or repay, repurchase or redeem any debt
security of the Company (including Securities issued by the Company pursuant to
the Indenture other than the Securities represented by this certificate) that
ranks pari passu with or junior in interest to this Security or make any
guarantee payments with respect to any guarantee by the Company of the debt
securities of any Subsidiaries of the Company (including FBS Guarantees other
than the FBS Guarantee related to the Capital Securities issued by FBS Capital
I) if such guarantee ranks pari passu with or junior in interest to this
Security (other than (a) dividends or distributions in Common Stock of the
Company, (b) any declaration of a dividend in connection with the implementation
of a stockholders' rights plan, or the issuance of stock under any such plan in
the future or the redemption or repurchase of any such rights pursuant thereto,
(c) payments under the FBS Guarantee related to the Capital Securities issued by
FBS Capital I, and (d) purchases of Common Stock related to the issuance of
Common Stock or rights under any of the Company's benefit plans for its
directors, officers or employees). Prior to the termination of any such
Extension Period, the Company may further extend such Extension Period, provided
that such extension does not cause such Extension Period to exceed 10
consecutive semi-annual periods or extend beyond the Stated Maturity. Upon the
termination of any such Extension Period and upon the payment of all amounts
then due, and subject to the foregoing limitation, the Company may elect to
begin a new Extension Period. No interest shall be due and payable during an
Extension Period except at the end thereof. The Company shall give the Trustee,
the Property 
<PAGE>
 
Trustee and the Administrative Agents of FBS Capital I, notice of its election
to begin any Extension Period at least five Business Days prior to the earlier
of (i) the date on which Distributions on the Capital Securities would be
payable except for the election to begin such Extension Period, or (ii) the date
the Administrative Agents are required to give notice to any automated quotation
system or to holders of such Capital Securities of the record date or the date
such Distributions are payable, but in any event not less than five Business
Days prior to such record date.

     If the Company makes an exchange offer pursuant to Section 2(a) of the
Debenture Exchange and Registration Rights Agreement and, pursuant to such
offer, the Company offers to exchange the Securities represented by this Global
Security for substantially identical Securities of a new series issued pursuant
to the Indenture, then, to the extent permitted by law, each Holder of the
Securities shall be obligated to tender all the Securities held by such Holder
in exchange for a like principal amount of the Securities of such new series in
accordance with the Company's instructions.  By its acceptance hereof, Holder
agrees to tender the Securities promptly, if and when such exchange offer is
made by the Company.  If the Company does not comply with certain of its
obligations under the Registration Rights Agreements, the Securities shall, in
accordance with Section 2(c) of the Capital Securities Exchange and Registration
Rights Agreement and Section 2(c) of the Debenture Exchange and Registration
Rights Agreement, bear an additional Special Interest, as liquidated damages, at
a rate of .25% per annum on the principal amount thereof.

     Payment of the principal of (and premium, if any) and interest on this
Security will be made at the office or agency of the Company maintained for that
purpose in the United States, in such coin or currency of the United States of
America as at the time of payment is legal tender for payment of public and
private debts; provided, however, that at the option of the Company payment of
interest may be made (i) by check mailed to the address of the Person entitled
thereto as such address shall appear in the Securities Register or (ii) by wire
transfer in immediately available funds at such place and to such account as may
be designated by the Person entitled thereto as specified in the Securities
Register.

     The indebtedness evidenced by this Security is, to the extent provided in
the Indenture, unsecured and will rank junior and subordinate and subject in
right of payments to the prior payment in full of all Senior and Subordinated
Debt, and this Security is issued subject to the provisions of the Indenture
with respect thereto.  Each Holder of this Security, by accepting the same, (a)
agrees to and shall be bound by such provisions, (b) authorizes and directs the
Trustee on his behalf to take such actions as may be necessary or appropriate to
effectuate the subordination so provided and (c) appoints the Trustee his
attorney-in-fact for any and all such purposes.  Each Holder hereof, by his
acceptance hereof, waives all notice of the acceptance of the subordination
provisions contained herein and in the Indenture by each holder of Senior and
Subordinated Debt, whether now outstanding or hereafter incurred, and waives
reliance by each such holder upon said provisions.
<PAGE>
 
     Reference is hereby made to the further provisions of this Security set
forth on the reverse hereof, which further provisions shall for all purposes
have the same effect as if set forth at this place.

     Unless the certificate of authentication hereon has been executed by the
Trustee referred to on the reverse hereof by manual signature, this Security
shall not be entitled to any benefit under the Indenture or be valid or
obligatory for any purpose.
<PAGE>
 
     IN WITNESS WHEREOF, the Company has caused this instrument to be duly
executed under its corporate seal.

                                       FIRST BANK SYSTEM, INC.


Dated:  November 26, 1996
                                       By ________________________
                                          David P. Grandstrand
                                          Senior Vice President
                                              and Treasurer
TRUSTEE'S CERTIFICATE OF
     AUTHENTICATION

                                                   [SEAL]
 
THIS IS ONE OF THE SECURITIES OF THE
SERIES DESIGNATED HEREIN AND ISSUED
PURSUANT TO THE WITHIN-MENTIONED       Attest______________________
INDENTURE.                                  James L. Chosy
                                            Vice President and
                                               Assistant Secretary

WILMINGTON TRUST COMPANY,
     as Trustee


By _________________________
   Its _____________________
<PAGE>
 
FORM OF REVERSE OF SECURITY.

                            FIRST BANK SYSTEM, INC.
           8.09% JUNIOR SUBORDINATED DEBENTURE DUE NOVEMBER 15, 2026


     This Security is one of a duly authorized issue of securities of the
Company (herein called the "Securities"), issued in one series under a Junior
Subordinated Indenture, dated as of November 15, 1996, between the Company and
Wilmington Trust Company, as Trustee (herein called the "Trustee", which term
includes any successor trustee under the Indenture) as supplemented pursuant to
Section 3.1 thereof by the Officers' Certificate dated November 26, 1996 (herein
called the "Indenture"), to which Indenture and all indentures supplemental
thereto reference is hereby made for a statement of the respective rights,
limitations of rights, duties and immunities thereunder of the Trustee, the
Company and the Holders of the Securities, and of the terms upon which the
Securities are, and are to be, authenticated and delivered.  This Security is
one of the series designated on the face hereof, limited in aggregate principal
amount to $309,279,000.

     All terms used in this Security that are defined in the Indenture and in
the Trust Agreement, dated as of November 26, 1996, as amended (the "Trust
Agreement"), for FBS Capital I among First Bank System, Inc., as Depositor, and
the Trustees named therein, shall have the meanings assigned to them in the
Indenture or the Trust Agreement, as the case may be.

     The Company may at any time, at its option, on or after November 15, 2006,
subject to the terms and conditions of Article XI of the Indenture and paragraph
(6) of the Officers' Certificate, and subject to FBS having received prior
approval of the Board of Governors of the Federal Reserve System (the "Federal
Reserve") if then required under applicable capital guidelines or policies of
the Federal Reserve, prepay this Security in whole but not in part, at a
prepayment price (the "Optional Prepayment Price") equal to the percentage of
the outstanding principal amount of the Securities specified below, plus, in
each case accrued interest thereon to the date of prepayment:

     November 15, 2006 to November 14, 2007: 104.045%
     November 15, 2007 to November 14, 2008: 103.641%
     November 15, 2008 to November 14, 2009: 103.236%
     November 15, 2009 to November 14, 2010: 102.832%
     November 15, 2010 to November 14, 2011: 102.427%
     November 15, 2011 to November 14, 2012: 102.023%
     November 15, 2002 to November 14, 2013: 101.618%
     November 15, 2013 to November 14, 2014: 101.214%
     November 15, 2014 to November 14, 2015: 100.809%
     November 15, 2015 to November 14, 2016: 100.405%
     On or after November 15, 2016:  100%
<PAGE>
 
     Upon the occurrence and during the continuation of a Tax Event in respect
of FBS Capital I, the Company may, at its option, at any time within 90 days of
the occurrence of such Tax Event prepay this Security, in whole (but not in
part), subject to the provisions of Section 11.7 and the other provisions of
Article XI of the Indenture, and at a prepayment price (the "Tax Event
Prepayment Price") equal to the greater of (i) 100% of the principal amount of
such Securities or (ii) as determined by a Quotation Agent (as defined below),
the sum of the present values of the remaining scheduled payments of principal
and interest thereon discounted to the prepayment date on a semi-annual basis
(assuming a 360 day year consisting of 30-day months) at the Adjusted Treasury
Rate, plus, in each case, accrued interest thereon to the date of prepayment.

     "Adjusted Treasury Rate" means, with respect to any prepayment date, the
rate per annum equal to the semi-annual equivalent yield to maturity of the
Comparable Treasury Issue plus (i) if such prepayment date occurs prior to
November 15, 1997, 1.25% or (ii) if such prepayment date occurs on or after
November 15, 1997, 1.00%, assuming a price for the Comparable Treasury Issue
(expressed as a percentage of its principle amount) equal to the Comparable
Treasury Price for such prepayment date.

     "Comparable Treasury Issue" means the United States Treasury security
selected by the Quotation Agent as having a maturity comparable to the remaining
term of the Securities to be prepaid that would be utilized, at the time of
selection and in accordance with customary financial practice, in pricing new
issues of corporate debt securities of comparable maturity to the remaining term
of the Securities.

     "Quotation Agent" means the Reference Treasury Dealer appointed by the
Trustee after consultation with the Company.  "Reference Treasury Dealer" means
(i) Goldman, Sachs & Co. and their respective successors; provided, however,
that if the foregoing shall cease to be a primary U.S. Government securities
dealer in New York City (a "Primary Treasury Dealer"), the Company shall
substitute therefor another Primary Treasury Dealer; and (ii) any other Primary
Treasury Dealer selected by the Trustee after consultation with the Company.

     "Comparable Treasury Price" means, with respect to any prepayment date, (i)
the average of the bid and asked prices for the Comparable Treasury Issue
(expressed in each case as a percentage of its principal amount) on the third
Business Day preceding such prepayment date, as set forth in the daily
statistical release (or any successor release) published by the Federal Reserve
Bank of New York and designated "Composite 3:30 p.m. Quotations for U.S.
Government Securities" or (ii) if such release (or any successor release) is not
published or does not contain such prices on such Business Day, (A) the average
of the Reference Treasury Dealer Quotations for such prepayment date, after
excluding the highest and lowest such Reference Treasury Dealer Quotations, or
(B) if the Trustee obtains fewer than three such Reference Treasury Dealer
Quotations, the average of all such Quotations.
<PAGE>
 
     "Reference Treasury Dealer Quotations" means, with respect to each
Reference Treasury Dealer and any prepayment date, the average, as determined by
the Trustee, of the bid and asked prices for the Comparable Treasury Issue
(expressed in each case as a percentage of its principal amount) quoted in
writing to the Trustee by such Reference Treasury Dealer at 5:00 p.m. on the
third Business Day preceding such prepayment date.

     "Tax Event" means the receipt by FBS Capital I of an opinion of counsel
experienced in such matters to the effect that, as a result of any amendment to,
or change (including any announced prospective change) in, the laws (or any
regulations thereunder) of the United States or any political subdivision or
taxing authority thereof or therein, or as a result of any official
administrative pronouncement or judicial decision interpreting or applying such
laws or regulations, which amendment or change is effective or which
pronouncement or decision is announced on or after the Issue Date, there is more
than an insubstantial risk that (i) FBS Capital I is, or will be within 90 days
of the date of such opinion, subject to United States Federal income tax with
respect to income received or accrued on the Securities, (ii) interest payable
by the Company on the Securities is not, or within 90 days of the date of such
opinion, will not be, deductible by the Company, in whole or in part, for United
States Federal income tax purposes, or (iii) FBS Capital I is, or will be within
90 days of the date of such opinion, subject to more than a de minimis amount of
other taxes, duties or other governmental charges.

     Notice of any prepayment will be mailed at least 30 days but not more than
60 days before the redemption date to each holder of Securities to be prepaid at
its registered address.  Unless the Company defaults in payment of the
prepayment price, on and after the prepayment date interest ceases to accrue on
such Securities called for prepayment.

     The Indenture contains provisions for satisfaction and discharge of the
entire indebtedness of this Security upon compliance by the Company with certain
conditions set forth in the Indenture.

     The Indenture permits, with certain exceptions as therein provided, the
Company and the Trustee at any time to enter into a supplemental indenture or
indentures for the purpose of modifying in any manner the rights and obligations
of the Company and of the Holders of the Securities, with the consent of the
Holders of not less than a majority in principal amount of the Outstanding
Securities of each series to be affected by such supplemental indenture.  The
Indenture also contains provisions permitting Holders of specified percentages
in principal amount of the Securities of each series at the time Outstanding, on
behalf of the Holders of all Securities of such series, to waive compliance by
the Company with certain provisions of the Indenture and certain past defaults
under the Indenture and their consequences.  Any such consent or waiver by the
Holder of this Security shall be conclusive and binding upon such Holder and
upon all future Holders of this Security and of any Security issued upon the
registration of transfer hereof or in 
<PAGE>
 
exchange herefor or in lieu hereof, whether or not notation of such consent or
waiver is made upon this Security.

     As provided in and subject to the provisions of the Indenture, if an Event
of Default with respect to the Securities of this series at the time Outstanding
occurs and is continuing, then and in every such case the Trustee or the Holders
of not less than 25% in principal amount of the Outstanding Securities of this
series may declare the principal amount of all the Securities of this series to
be due and payable immediately, by a notice in writing to the Company (and to
the Trustee if given by Holders), provided that, in the case of the Securities
of this series issued to FBS Capital I, if upon an Event of Default, the Trustee
or the Holders of not less than 25% in principal amount of the Outstanding
Securities of this series fails to declare the principal of all the Securities
of this series to be immediately due and payable, the holders of at least 25% in
aggregate Liquidation Amount of the Capital Securities then outstanding shall
have such right by a notice in writing to the Company and the Trustee; and upon
any such declaration the principal amount of and the accrued interest (including
any Additional Interest) on all the Securities of this series shall become
immediately due and payable, provided that the payment of principal and interest
(including any Additional Interest) on such Securities shall remain subordinated
to the extent provided in Article XIII of the Indenture.

     No reference herein to the Indenture and no provision of this Security or
of the Indenture shall alter or impair the obligation of the Company, which is
absolute and unconditional, to pay the principal of (and premium, if any) and
interest on this Security at the times, place and rate, and in the coin or
currency, herein prescribed.

     As provided in the Indenture and subject to certain limitations therein set
forth, the transfer of this Security is registrable in the Securities Register,
upon surrender of this Security for registration of transfer at the office or
agency of the Company maintained under Section 10.2 of the Indenture duly
endorsed by, or accompanied by a written instrument of transfer in form
satisfactory to the Company and the Securities Registrar duly executed by, the
Holder hereof or his attorney duly authorized in writing, and thereupon one or
more new Securities of this series, of authorized denominations and for the same
aggregate principal amount, will be issued to the designated transferee or
transferees.  No service charge shall be made for any such registration of
transfer or exchange, but the Company may require payment of a sum sufficient to
cover any tax or other governmental charge payable in connection therewith.

     Prior to due presentment of this Security for registration of transfer, the
Company, the Trustee and any agent of the Company or the Trustee may treat the
Person in whose name this Security is registered as the owner hereof for all
purposes, whether or not this Security be overdue, and neither the Company, the
Trustee nor any such agent shall be affected by notice to the contrary.

     The Securities of this series are issuable only in registered form without
coupons in denominations of minimum denominations of $100,000 and any 
<PAGE>
 
integral multiples of $1,000 in excess thereof. As provided in the Indenture and
subject to certain limitations therein set forth, Securities of this series are
exchangeable for a like aggregate principal amount of Securities of such series
of a different authorized denomination, as requested by the Holder surrendering
the same.

     The Company and, by its acceptance of this Security or a beneficial
interest therein, the Holder of, and any Person that acquires a beneficial
interest in, this Security agree that for United States Federal, state and local
tax purposes it is intended that this Security constitute indebtedness.

     THIS SECURITY SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE
LAWS OF THE STATE OF NEW YORK WITHOUT REGARD TO CONFLICTS OF LAWS PRINCIPLES
THEREOF.
<PAGE>
 
                       ________________________________

                                 ABBREVIATIONS

     The following abbreviations, when used in this instrument, shall be
construed as though they were written out in full according to applicable laws
or regulations:

     TEN COM--as tenants in common
     TEN ENT--as tenants by the entireties
     JT TEN--as joint tenants with right of survivorship
               and not as tenants in common
     UNIF GIFT MIN ACT--_______________Custodian_______________
                            (Cust)                  (Minor)

                       under Uniform Gift to Minors Act

                       ________________________________
                                    (State)

Additional abbreviations may be used though not in the above list.

                       _________________________________
<PAGE>
 
     FOR VALUE RECEIVED, the undersigned hereby sell(s), assign(s) and
transfer(s) unto


PLEASE INSERT SOCIAL SECURITY
OR OTHER IDENTIFYING NUMBER
OF ASSIGNEE
 
[______________]________________________________________________________________
                (Name and address of assignee, including zip code, must be 
                 printed or typewritten)


________________________________________________________________________________
the within Note, and all rights thereunder, hereby irrevocably constituting and
appointing


_______________________________________________________________________ Attorney
to transfer said Note on the books of the within Company, with full power of
substitution in the premises


Dated     _______________           ___________________________________________

                                    ___________________________________________



     NOTICE:  The signature to this assignment must correspond with the name as
written upon the within Note in every particular, without alteration or
enlargement or any change whatever and must be guaranteed by a commercial bank
or trust company having its principal office or a correspondent in the City of
New York or by a member of the New York Stock (Exchange).
<PAGE>
 
                            CERTIFICATE OF TRANSFER


          In connection with any transfer of this Note occurring prior to the
date that is three years after the later November __, 1996 and the last date on
which this Note (or any Predecessor Security) was owned by the Company or any
affiliate of the Company, the undersigned confirms that this Note is being
transferred:

CHECK ONE BOX BELOW

<TABLE> 
<S>  <C>  <C>                                    <C>  <C>  <C> 
[_]  (a)  As long as this note is                [_]  (c)  to an institutional
          eligible for resale pursuant to Rule             "accredited investor" (as defined in
          144 under the Securities Act of                  Rule 501(a)(1), (2), (3) or (7) under
          1933, as amended, to a person the                the Securities Act of 1933, as
          undersigned reasonably believes is a             amended) that has furnished to the
          "qualified institutional buyer" (a               Trustee a signed letter containing
          "QIB") as defined in such Rule 144A              certain representations and
          that purchases for its own account               agreements (the form of which letter
          or for the account of a QIB to whom              can be obtained from the Trustee); or
          notice is given that the transfer is
          being made in reliance on such Rule
          144A;
                                                 [_]  (d)  to the Company.
[_]  (b)  pursuant to offers and sales
          to non-U.S. persons   that occur
          outside of the United States within
          the meaning of Regulation S under
          the Securities Act of 1933, as
          amended;
</TABLE>

     Unless the certificate of authentication hereon has been executed by or on
behalf of the Trustee under the Indenture by the manual signature of one of its
authorized signatories, this Note shall not be entitled to any benefits under
the Indenture or be valid or obligatory for any purpose.


Dated:


______________________________
         SIGNATURE



Signature Guaranteed:


______________________________
         SIGNATURE
<PAGE>
 
             TO BE COMPLETED BY PURCHASER IF (a) ABOVE IS CHECKED.


     The undersigned represents and warrants that it is acquiring this Note for
its own account or an account with respect to which it exercises sole investment
discretion and that it or any such account , as the case may be, is a "qualified
institutional buyer" within the meaning of Rule 144A under the Securities Act of
1933, as amended, and is aware that the sale to it is being made in reliance on
Rule 144A and acknowledges that it has received such information regarding the
Company as the undersigned has requested pursuant to Rule 144A or has determined
not to request such information and that it is aware that the transferor is
relying upon the undersigned's foregoing representations in order to claim the
exemption from registration provided by Rule 144A.


Dated:


NOTICE:  To be executed by an executive officer



______________________________

<PAGE>

                                                                     EXHIBIT 4.8

 
     [Include if a Global NoteTHIS NOTE IS A GLOBAL SECURITY WITHIN THE MEANING
OF THE INDENTURE REFERRED TO HEREIN AND IS REGISTERED IN THE NAME OF A
DEPOSITARY OR A NOMINEE OF A DEPOSITARY.  UNLESS THIS CERTIFICATE IS PRESENTED
BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITARY TRUST COMPANY (55 WATER
STREET, NEW YORK, NEW YORK) TO THE ISSUER OR ITS AGENT FOR REGISTRATION OF
TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE
NAME OF CEDE & CO. OR SUCH OTHER NAME AS REQUESTED BY AN AUTHORIZED
REPRESENTATIVE OF THE DEPOSITARY TRUST COMPANY AND ANY PAYMENT IS MADE TO CEDE &
CO., ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO
ANY PERSON IS WRONGFUL SINCE THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN
INTEREST HEREIN.]


                            FIRST BANK SYSTEM, INC.

          8.09% JUNIOR SUBORDINATED DEBENTURE DUE NOVEMBER 15, 2026


Registered
No.:

     First Bank System, Inc., a corporation organized and existing under the
laws of Delaware (hereinafter called the "Company", which term includes any
successor corporation under the Indenture hereinafter referred to), for value
received, hereby promises to pay to ______________________________, the
principal sum of _____________ DOLLARS ($_______________) on November 15, 2026
(the "Stated Maturity"). The Company further promises to pay interest on said
principal sum from November 15, 1996 or from the most recent interest payment
date (each such date, an "Interest Payment Date") on which interest has been
paid or duly provided for, semi-annually (subject to deferral as set forth
herein) in arrears on May 15 and November 15 each year commencing May 15, 1997
at the rate of 8.09% per annum, until the principal hereof shall have become due
and payable, plus Additional Interest, if any, plus Special Interest, if any,
until the principal hereof is paid or duly provided for or made available for
payment and on any overdue principal and (without duplication and to the extent
that payment of such interest is enforceable under applicable law) on any
overdue installment of interest at the rate of 8.09% per annum, compounded semi-
annually. The amount of interest payable for any period shall be computed on the
basis of twelve 30-day months and a 360-day year. The amount of interest payable
for any partial period shall be computed on the basis of the number of days
elapsed in a 360-day year of twelve 30-day months. In the event that any date on
which interest is payable on this Security is not a Business Day, then a payment
of the interest payable

<PAGE>
 
on such date will be made on the next succeeding day which is a Business Day
(and without any interest or other payment in respect of any such delay), except
that, if such Business Day is in the next succeeding calendar year, such payment
shall be made on the immediately preceding Business Day, in each case with the
same force and effect as if made on the date the payment was originally payable.
A "Business Day" shall mean any day other than (i) a Saturday or Sunday, (ii) a
day on which banking institutions in The City of New York are authorized or
required by law or executive order to remain closed or (iii) a day on which the
Corporate Trust Office of the Trustee, or the principal office of the Property
Trustee under the Trust Agreement (hereinafter referred to) for FBS Capital I is
closed for business.  The interest installment so payable, and punctually paid
or duly provided for, on any Interest Payment Date will, as provided in the
Indenture, be paid to the Person in whose name this Security (or one or more
Predecessor Securities) is registered at the close of business on the Regular
Record Date for such interest installment, which shall be the Business Day
immediately preceding such Interest Payment Date.  Any such interest installment
not so punctually paid or duly provided for shall forthwith cease to be payable
to the Holder on such Regular Record Date and may either be paid to the Person
in whose name this Security (or one or more Predecessor Securities) is
registered at the close of business on a Special Record Date for the payment of
such Defaulted Interest to be fixed by the Trustee, notice whereof shall be
given to Holders of Securities of this series not less than 10 days prior to
such Special Record Date, or be paid at any time in any other lawful manner not
inconsistent with the requirements of any securities exchange on which the
Securities of this series may be listed, and upon such notice as may be required
by such exchange, all as more fully provided in said Indenture.

     So long as no Event of Default has occurred and is continuing, the Company
shall have the right at any time during the term of this Security to defer
payment of interest on this Security, at any time or from time to time, for up
to 10 consecutive semi-annual interest payment periods with respect to each
deferral period (each an "Extension Period"), (during which Extension Periods
the Company shall have the right to make partial payments of interest on any
Interest Payment Date, and at the end of which the Company shall pay all
interest then accrued and unpaid (together with Additional Interest thereon to
the extent permitted by applicable law)); provided, however, that no Extension
Period shall extend beyond the Stated Maturity of the principal of this
Security; provided, further, that during any such Extension Period, the Company
shall not, and shall not permit any Subsidiary of the Company to, (i) declare or
pay any dividends or distributions or redeem, purchase, acquire or make a
liquidation payment with respect to, any of the Company's capital stock (which
includes common and preferred stock), or (ii) make any payment of principal of
or interest or premium, if any, on or repay, repurchase or redeem any debt
security of the Company (including Securities issued by the Company pursuant to
the Indenture other than the Securities represented by this certificate) that
ranks pari passu with or junior in interest to this Security or make any
guarantee

                                      -2-
<PAGE>
 
payments with respect to any guarantee by the Company of the debt securities of
any Subsidiaries of the Company (including FBS Guarantees other than the FBS
Guarantee related to the Capital Securities issued by FBS Capital I) if such
guarantee ranks pari passu with or junior in interest to this Security (other
than (a) dividends or distributions in Common Stock of the Company, (b) any
declaration of a dividend in connection with the implementation of a
stockholders' rights plan, or the issuance of stock under any such plan in the
future or the redemption or repurchase of any such rights pursuant thereto,
(c) payments under the FBS Guarantee related to the Capital Securities issued by
FBS Capital I, and (d) purchases of Common Stock related to the issuance of
Common Stock or rights under any of the Company's benefit plans for its
directors, officers or employees). Prior to the termination of any such
Extension Period, the Company may further extend such Extension Period, provided
that such extension does not cause such Extension Period to exceed 10
consecutive semi-annual periods or extend beyond the Stated Maturity. Upon the
termination of any such Extension Period and upon the payment of all amounts
then due, and subject to the foregoing limitation, the Company may elect to
begin a new Extension Period. No interest shall be due and payable during an
Extension Period except at the end thereof. The Company shall give the Trustee,
the Property Trustee and the Administrative Agents of FBS Capital I, notice of
its election to begin any Extension Period at least five Business Days prior to
the earlier of (i) the date on which Distributions on the Capital Securities
would be payable except for the election to begin such Extension Period, or
(ii) the date the Administrative Agents are required to give notice to any
automated quotation system or to holders of such Capital Securities of the
record date or the date such Distributions are payable, but in any event not
less than five Business Days prior to such record date.

     If the Company makes an exchange offer pursuant to Section 2(a) of the
Debenture Exchange and Registration Rights Agreement and, pursuant to such
offer, the Company offers to exchange the Securities represented by this Global
Security for substantially identical Securities of a new series issued pursuant
to the Indenture, then, to the extent permitted by law, each Holder of the
Securities shall be obligated to tender all the Securities held by such Holder
in exchange for a like principal amount of the Securities of such new series in
accordance with the Company's instructions.  By its acceptance hereof, Holder
agrees to tender the Securities promptly, if and when such exchange offer is
made by the Company.  If the Company does not comply with certain of its
obligations under the Registration Rights Agreements, the Securities shall, in
accordance with Section 2(c) of the Capital Securities Exchange and Registration
Rights Agreement and Section 2(c) of the Debenture Exchange and Registration
Rights Agreement, bear an additional Special Interest, as liquidated damages, at
a rate of .25% per annum on the principal amount thereof.

     Payment of the principal of (and premium, if any) and interest on this
Security will be made at the office or agency of the Company maintained for that

                                      -3-
<PAGE>
 
purpose in the United States, in such coin or currency of the United States of
America as at the time of payment is legal tender for payment of public and
private debts; provided, however, that at the option of the Company payment of
interest may be made (i) by check mailed to the address of the Person entitled
thereto as such address shall appear in the Securities Register or (ii) by wire
transfer in immediately available funds at such place and to such account as may
be designated by the Person entitled thereto as specified in the Securities
Register.

     The indebtedness evidenced by this Security is, to the extent provided in
the Indenture, unsecured and will rank junior and subordinate and subject in
right of payments to the prior payment in full of all Senior and Subordinated
Debt, and this Security is issued subject to the provisions of the Indenture
with respect thereto.  Each Holder of this Security, by accepting the same, (a)
agrees to and shall be bound by such provisions, (b) authorizes and directs the
Trustee on his behalf to take such actions as may be necessary or appropriate to
effectuate the subordination so provided and (c) appoints the Trustee his
attorney-in-fact for any and all such purposes.  Each Holder hereof, by his
acceptance hereof, waives all notice of the acceptance of the subordination
provisions contained herein and in the Indenture by each holder of Senior and
Subordinated Debt, whether now outstanding or hereafter incurred, and waives
reliance by each such holder upon said provisions.

     Reference is hereby made to the further provisions of this Security set
forth on the reverse hereof, which further provisions shall for all purposes
have the same effect as if set forth at this place.

     Unless the certificate of authentication hereon has been executed by the
Trustee referred to on the reverse hereof by manual signature, this Security
shall not be entitled to any benefit under the Indenture or be valid or
obligatory for any purpose.

                                      -4-
<PAGE>
 
     IN WITNESS WHEREOF, the Company has caused this instrument to be duly
executed under its corporate seal.

                                             FIRST BANK SYSTEM, INC.


Dated:
                                             By ________________________    
                                                David P. Grandstrand
                                                Senior Vice President
                                                  and Treasurer
TRUSTEE'S CERTIFICATE OF
     AUTHENTICATION

                                                           [SEAL]
 
THIS IS ONE OF THE SECURITIES OF THE
SERIES DESIGNATED HEREIN AND ISSUED
PURSUANT TO THE WITHIN-MENTIONED             Attest______________________     
INDENTURE.                                        James L. Chosy
                                                  Vice President and
                                                    Assistant Secretary

WILMINGTON TRUST COMPANY,
     as Trustee


By _________________________________
      Its __________________________


                                      -5-
<PAGE>
 
FORM OF REVERSE OF SECURITY.

                            FIRST BANK SYSTEM, INC.
           8.09% JUNIOR SUBORDINATED DEBENTURE DUE NOVEMBER 15, 2026


     This Security is one of a duly authorized issue of securities of the
Company (herein called the "Securities"), issued in one series under a Junior
Subordinated Indenture, dated as of November 15, 1996, between the Company and
Wilmington Trust Company, as Trustee (herein called the "Trustee", which term
includes any successor trustee under the Indenture) as supplemented pursuant to
Section 3.1 thereof by the Officers' Certificate dated November 26, 1996 (herein
called the "Indenture"), to which Indenture and all indentures supplemental
thereto reference is hereby made for a statement of the respective rights,
limitations of rights, duties and immunities thereunder of the Trustee, the
Company and the Holders of the Securities, and of the terms upon which the
Securities are, and are to be, authenticated and delivered.  This Security is
one of the series designated on the face hereof, limited in aggregate principal
amount to $309,279,000.

     All terms used in this Security that are defined in the Indenture and in
the Trust Agreement, dated as of November 26, 1996, as amended (the "Trust
Agreement"), for FBS Capital I among First Bank System, Inc., as Depositor, and
the Trustees named therein, shall have the meanings assigned to them in the
Indenture or the Trust Agreement, as the case may be.

     The Company may at any time, at its option, on or after November 15, 2006,
subject to the terms and conditions of Article XI of the Indenture and paragraph
(6) of the Officers' Certificate, and subject to FBS having received prior
approval of the Board of Governors of the Federal Reserve System (the "Federal
Reserve") if then required under applicable capital guidelines or policies of
the Federal Reserve, prepay this Security in whole but not in part, at a
prepayment price (the "Optional Prepayment Price") equal to the percentage of
the outstanding principal amount of the Securities specified below, plus, in
each case accrued interest thereon to the date of prepayment:

     November 15, 2006 to November 14, 2007: 104.045%
     November 15, 2007 to November 14, 2008: 103.641%
     November 15, 2008 to November 14, 2009: 103.236%
     November 15, 2009 to November 14, 2010: 102.832%
     November 15, 2010 to November 14, 2011: 102.427%
     November 15, 2011 to November 14, 2012: 102.023%
     November 15, 2002 to November 14, 2013: 101.618%
     November 15, 2013 to November 14, 2014: 101.214%
     November 15, 2014 to November 14, 2015: 100.809%
     
                                      -6-
<PAGE>
 
     November 15, 2015 to November 14, 2016: 100.405%
     On or after November 15, 2016:  100%

     Upon the occurrence and during the continuation of a Tax Event in respect
of FBS Capital I, the Company may, at its option, at any time within 90 days of
the occurrence of such Tax Event prepay this Security, in whole (but not in
part), subject to the provisions of Section 11.7 and the other provisions of
Article XI of the Indenture, and at a prepayment price (the "Tax Event
Prepayment Price") equal to the greater of (i) 100% of the principal amount of
such Securities or (ii) as determined by a Quotation Agent (as defined below),
the sum of the present values of the remaining scheduled payments of principal
and interest thereon discounted to the prepayment date on a semi-annual basis
(assuming a 360 day year consisting of 30-day months) at the Adjusted Treasury
Rate, plus, in each case, accrued interest thereon to the date of prepayment.

     "Adjusted Treasury Rate" means, with respect to any prepayment date, the
rate per annum equal to the semi-annual equivalent yield to maturity of the
Comparable Treasury Issue plus (i) if such prepayment date occurs prior to
November 15, 1997, 1.25% or (ii) if such prepayment date occurs on or after
November 15, 1997, 1.00%, assuming a price for the Comparable Treasury Issue
(expressed as a percentage of its principle amount) equal to the Comparable
Treasury Price for such prepayment date.

     "Comparable Treasury Issue" means the United States Treasury security
selected by the Quotation Agent as having a maturity comparable to the remaining
term of the Securities to be prepaid that would be utilized, at the time of
selection and in accordance with customary financial practice, in pricing new
issues of corporate debt securities of comparable maturity to the remaining term
of the Securities.

     "Quotation Agent" means the Reference Treasury Dealer appointed by the
Trustee after consultation with the Company.  "Reference Treasury Dealer" means
(i) Goldman, Sachs & Co. and their respective successors; provided, however,
that if the foregoing shall cease to be a primary U.S. Government securities
dealer in New York City (a "Primary Treasury Dealer"), the Company shall
substitute therefor another Primary Treasury Dealer; and (ii) any other Primary
Treasury Dealer selected by the Trustee after consultation with the Company.

     "Comparable Treasury Price" means, with respect to any prepayment date, (i)
the average of the bid and asked prices for the Comparable Treasury Issue
(expressed in each case as a percentage of its principal amount) on the third
Business Day preceding such prepayment date, as set forth in the daily
statistical release (or any successor release) published by the Federal Reserve
Bank of New York and designated "Composite 3:30 p.m. Quotations for U.S.
Government Securities" or (ii)

                                      -7-
<PAGE>
 
if such release (or any successor release) is not published or does not contain
such prices on such Business Day, (A) the average of the Reference Treasury
Dealer Quotations for such prepayment date, after excluding the highest and
lowest such Reference Treasury Dealer Quotations, or (B) if the Trustee obtains
fewer than three such Reference Treasury Dealer Quotations, the average of all
such Quotations.

     "Reference Treasury Dealer Quotations" means, with respect to each
Reference Treasury Dealer and any prepayment date, the average, as determined by
the Trustee, of the bid and asked prices for the Comparable Treasury Issue
(expressed in each case as a percentage of its principal amount) quoted in
writing to the Trustee by such Reference Treasury Dealer at 5:00 p.m. on the
third Business Day preceding such prepayment date.

     "Tax Event" means the receipt by FBS Capital I of an opinion of counsel
experienced in such matters to the effect that, as a result of any amendment to,
or change (including any announced prospective change) in, the laws (or any
regulations thereunder) of the United States or any political subdivision or
taxing authority thereof or therein, or as a result of any official
administrative pronouncement or judicial decision interpreting or applying such
laws or regulations, which amendment or change is effective or which
pronouncement or decision is announced on or after the Issue Date, there is more
than an insubstantial risk that (i) FBS Capital I is, or will be within 90 days
of the date of such opinion, subject to United States Federal income tax with
respect to income received or accrued on the Securities, (ii) interest payable
by the Company on the Securities is not, or within 90 days of the date of such
opinion, will not be, deductible by the Company, in whole or in part, for United
States Federal income tax purposes, or (iii) FBS Capital I is, or will be within
90 days of the date of such opinion, subject to more than a de minimis amount of
other taxes, duties or other governmental charges.

     Notice of any prepayment will be mailed at least 30 days but not more than
60 days before the redemption date to each holder of Securities to be prepaid at
its registered address.  Unless the Company defaults in payment of the
prepayment price, on and after the prepayment date interest ceases to accrue on
such Securities called for prepayment.

     The Indenture contains provisions for satisfaction and discharge of the
entire indebtedness of this Security upon compliance by the Company with certain
conditions set forth in the Indenture.

     The Indenture permits, with certain exceptions as therein provided, the
Company and the Trustee at any time to enter into a supplemental indenture or
indentures for the purpose of modifying in any manner the rights and obligations
of the Company and of the Holders of the Securities, with the consent of the
Holders of not less than a majority in principal amount of the Outstanding
Securities of each

                                      -8-
<PAGE>
 
series to be affected by such supplemental indenture. The Indenture also
contains provisions permitting Holders of specified percentages in principal
amount of the Securities of each series at the time Outstanding, on behalf of
the Holders of all Securities of such series, to waive compliance by the Company
with certain provisions of the Indenture and certain past defaults under the
Indenture and their consequences. Any such consent or waiver by the Holder of
this Security shall be conclusive and binding upon such Holder and upon all
future Holders of this Security and of any Security issued upon the registration
of transfer hereof or in exchange herefor or in lieu hereof, whether or not
notation of such consent or waiver is made upon this Security.

     As provided in and subject to the provisions of the Indenture, if an Event
of Default with respect to the Securities of this series at the time Outstanding
occurs and is continuing, then and in every such case the Trustee or the Holders
of not less than 25% in principal amount of the Outstanding Securities of this
series may declare the principal amount of all the Securities of this series to
be due and payable immediately, by a notice in writing to the Company (and to
the Trustee if given by Holders), provided that, in the case of the Securities
of this series issued to FBS Capital I, if upon an Event of Default, the Trustee
or the Holders of not less than 25% in principal amount of the Outstanding
Securities of this series fails to declare the principal of all the Securities
of this series to be immediately due and payable, the holders of at least 25% in
aggregate Liquidation Amount of the Capital Securities then outstanding shall
have such right by a notice in writing to the Company and the Trustee; and upon
any such declaration the principal amount of and the accrued interest (including
any Additional Interest) on all the Securities of this series shall become
immediately due and payable, provided that the payment of principal and interest
(including any Additional Interest) on such Securities shall remain subordinated
to the extent provided in Article XIII of the Indenture.

     No reference herein to the Indenture and no provision of this Security or
of the Indenture shall alter or impair the obligation of the Company, which is
absolute and unconditional, to pay the principal of (and premium, if any) and
interest on this Security at the times, place and rate, and in the coin or
currency, herein prescribed.

     As provided in the Indenture and subject to certain limitations therein set
forth, the transfer of this Security is registrable in the Securities Register,
upon surrender of this Security for registration of transfer at the office or
agency of the Company maintained under Section 10.2 of the Indenture duly
endorsed by, or accompanied by a written instrument of transfer in form
satisfactory to the Company and the Securities Registrar duly executed by, the
Holder hereof or his attorney duly authorized in writing, and thereupon one or
more new Securities of this series, of authorized denominations and for the same
aggregate principal amount, will be issued to the designated transferee or
transferees.  No service charge shall be made for any such registration of
transfer or exchange, but the Company

                                      -9-
<PAGE>
 
may require payment of a sum sufficient to cover any tax or other governmental
charge payable in connection therewith.

     Prior to due presentment of this Security for registration of transfer, the
Company, the Trustee and any agent of the Company or the Trustee may treat the
Person in whose name this Security is registered as the owner hereof for all
purposes, whether or not this Security be overdue, and neither the Company, the
Trustee nor any such agent shall be affected by notice to the contrary.

     The Securities of this series are issuable only in registered form without
coupons in denominations of minimum denominations of $100,000 and any integral
multiples of $1,000 in excess thereof.  As provided in the Indenture and subject
to certain limitations therein set forth, Securities of this series are
exchangeable for a like aggregate principal amount of Securities of such series
of a different authorized denomination, as requested by the Holder surrendering
the same.

     The Company and, by its acceptance of this Security or a beneficial
interest therein, the Holder of, and any Person that acquires a beneficial
interest in, this Security agree that for United States Federal, state and local
tax purposes it is intended that this Security constitute indebtedness.

     THIS SECURITY SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE
LAWS OF THE STATE OF NEW YORK WITHOUT REGARD TO CONFLICTS OF LAWS PRINCIPLES
THEREOF.

                                     -10-
 
<PAGE>
 
                       _________________________________

                                 ABBREVIATIONS

     The following abbreviations, when used in this instrument, shall be
construed as though they were written out in full according to applicable laws
or regulations:

     TEN COM--as tenants in common
     TEN ENT--as tenants by the entireties
     JT TEN--as joint tenants with right of survivorship
                 and not as tenants in common
     UNIF GIFT MIN ACT--_______________Custodian_______________
                            (Cust)                 (Minor)

                       under Uniform Gift to Minors Act

                       ________________________________
                                    (State)

Additional abbreviations may be used though not in the above list.

                                _________________________________
                                    
                                     -11-
<PAGE>
 
     FOR VALUE RECEIVED, the undersigned hereby sell(s), assign(s) and        
transfer(s) unto

PLEASE INSERT SOCIAL SECURITY
OR OTHER IDENTIFYING NUMBER
OF ASSIGNEE
 
[            ] _______________________________________________________________
                    (Name and address of assignee, including zip code, must be
                                      printed or typewritten)


_______________________________________________________________________________
the within Note, and all rights thereunder, hereby irrevocably constituting and
appointing


_____________________________________________________________________ Attorney
to transfer said Note on the books of the within Company, with full power of
substitution in the premises

Dated     _______________           ___________________________________________

                                    ___________________________________________

     
     NOTICE: The signature to this assignment must correspond with the name as
written upon the within Note in every particular, without alteration or
enlargement or any change whatever and must be guaranteed by a commercial bank
or trust company having its principal office or a correspondent in the City of
New York or by a member of the New York Stock (Exchange).

                                     -12-

<PAGE>

                                                                     Exhibit 4.9
________________________________________________________________________________

                              GUARANTEE AGREEMENT


                                    BETWEEN


                            FIRST BANK SYSTEM, INC.
                                (AS GUARANTOR)


                                      AND


                           WILMINGTON TRUST COMPANY
                                 (AS TRUSTEE)



                                  DATED AS OF

                               NOVEMBER 26, 1996



________________________________________________________________________________
<PAGE>
 
                            CROSS-REFERENCE TABLE*

<TABLE>
<CAPTION>
         Section of Trust                                   Section of
Indenture Act of 1939, as amended                       Guarantee Agreement
- ---------------------------------                       -------------------
<S>                                                     <C>   
             310(a).                                            4.1(a)
             310(b).                                         4.1(c), 2.8
             310(c).                                        Inapplicable
             311(a).                                            2.2(b)
             311(b).                                            2.2(b)
             311(c).                                        Inapplicable
             312(a).                                            2.2(a)
             312(b).                                            2.2(b)
              313.                                               2.3
             314(a).                                             2.4
             314(b).                                        Inapplicable
             314(c).                                             2.5
             314(d).                                        Inapplicable
             314(e).                                        1.1, 2.5, 3.2
             314(f).                                           2.1, 3.2
             315(a).                                            3.1(d)
             315(b).                                             2.7
             315(c).                                             3.1
             315(d).                                            3.1(d)
             316(a).                                        1.1, 2.6, 5.4
             316(b).                                             5.3
             316(c).                                             9.2
             317(a).                                        Inapplicable
             317(b).                                        Inapplicable
             318(a).                                            2.1(b)
             318(b).                                             2.1
             318(c).                                            2.1(a)
</TABLE>
- ----------------
* This Cross-Reference Table does not constitute part of the Guarantee
  Agreement and shall not affect the interpretation of any of its terms or
  provisions.
<PAGE>
 
                               TABLE OF CONTENTS
<TABLE> 
<CAPTION>  
                                                                                          Page
                                                                                          ----
<S>                                                                                       <C>
ARTICLE I.    DEFINITIONS                                                                    1
                Section 1.1. Definitions                                                     1
 
ARTICLE II.   TRUST INDENTURE ACT                                                            3
                Section 2.1. Trust Indenture Act; Application                                3
                Section 2.2. List of Holders                                                 4
                Section 2.3. Reports by the Guarantee Trustee                                4
                Section 2.4. Periodic Reports to Guarantee Trustee                           4
                Section 2.5. Evidence of Compliance with Conditions Precedent                4
                Section 2.6. Events of Default; Waiver                                       4
                Section 2.7. Event of Default; Notice                                        4
                Section 2.8. Conflicting Interests                                           5
 
ARTICLE III.  POWERS, DUTIES AND RIGHTS OF THE GUARANTEE TRUSTEE                             5
                Section 3.1. Powers and Duties of the Guarantee Trustee                      5
                Section 3.2. Certain Rights of Guarantee Trustee                             6
                Section 3.3. Indemnity                                                       8
 
ARTICLE IV.   GUARANTEE TRUSTEE                                                              8
                Section 4.1. Guarantee Trustee; Eligibility                                  8
                Section 4.2. Appointment, Removal and Resignation of the         
                               Guarantee Trustee                                             8
 
ARTICLE V.    GUARANTEE                                                                      8
                Section 5.1. Guarantee                                                       8
                Section 5.2. Waiver of Notice and Demand                                     9
                Section 5.3. Obligations Not Affected                                        9
                Section 5.4. Rights of Holders                                              10
                Section 5.5. Guarantee of Payment                                           10
                Section 5.6. Subrogation                                                    10
                Section 5.7. Independent Obligations                                        10
 
ARTICLE VI.   COVENANTS AND SUBORDINATION                                                   11
                Section 6.1. Subordination                                                  11 
                Section 6.2. Pari Passu Guarantees                                          11
 
ARTICLE VII.  CONSOLIDATION, MERGER, SALE OF ASSETS AND OTHER TRANSACTIONS                  11
                Section 7.1. Guarantor May Consolidate, Etc., Only on Certain Terms         11
                Section 7.2. Successor Guarantor Substituted                                12
 
ARTICLE VIII. TERMINATION                                                                   12
                Section 8.1. Termination                                                    12
</TABLE> 
<PAGE>
 
<TABLE> 
<S>                                                                                       <C>
ARTICLE IX.   MISCELLANEOUS                                                                 12
                Section 9.1. Successors and Assigns                                         12
                Section 9.2. Amendments                                                     12
                Section 9.3. Notices                                                        12
                Section 9.4. Benefit                                                        13
                Section 9.5. Interpretation                                                 13
                Section 9.6. Governing Law                                                  14
</TABLE> 
<PAGE>
 
                             GUARANTEE AGREEMENT


     This GUARANTEE AGREEMENT, dated as of November 26, 1996, is executed and
delivered by FIRST BANK SYSTEM, INC., a Delaware corporation (the "Guarantor")
having its principal office at 601 Second Avenue South, Minneapolis, Minnesota
55402, and Wilmington Trust Company, a Delaware banking corporation, as trustee
(the "Guarantee Trustee"), for the benefit of the Holders from time to time of
the Capital Securities (as defined herein) of FBS Capital I, a Delaware
statutory business trust (the "Trust").

     WHEREAS, pursuant to an Amended and Restated Trust Agreement, dated as of
November 26, 1996  (the "Trust Agreement") among the Guarantor, as Depositor,
the Property Trustee and the Delaware Trustee named therein and the Holders from
time to time of undivided beneficial interests in the assets of the Trust, the
Trust is issuing $300,000,000 aggregate Liquidation Amount (as defined in the
Trust Agreement) of its 8.09% Capital Securities, Liquidation Amount $1,000 per
Capital Security (the "Capital Securities") representing preferred undivided
beneficial interests in the assets of the Trust and having the terms set forth
in the Trust Agreement;

     WHEREAS, the Capital Securities will be issued by the Trust and the
proceeds thereof, together with the proceeds from the issuance of the Trust's
Common Securities (as defined below), will be used to purchase the Debentures
(as defined in the Trust Agreement) of the Guarantor which will be deposited
with Wilmington Trust Company, as Property Trustee under the Trust Agreement, as
trust assets; and

     WHEREAS, as incentive for the Holders to purchase Capital Securities, the
Guarantor desires irrevocably and unconditionally to agree, to the extent set
forth herein, to pay to the Holders of the Capital Securities the Guarantee
Payments (as defined herein) and to make certain other payments on the terms and
conditions set forth herein.

     NOW, THEREFORE, in consideration of the purchase by each Holder of Capital
Securities, which purchase the Guarantor hereby agrees shall benefit the
Guarantor, the Guarantor executes and delivers this Guarantee Agreement and
pursuant to Section 5.1 hereof extends the Guarantee for the benefit of the
Holders from time to time of the Capital Securities.

                            ARTICLE 1.  DEFINITIONS

     SECTION 1.1.  Definitions.

     As used in this Guarantee Agreement, the terms set forth below shall,
unless the context otherwise requires, have the following meanings.  Capitalized
or otherwise defined terms used but not otherwise defined herein shall have the
meanings assigned to such terms in the Trust Agreement and the Indenture (as
defined herein), each as in effect on the date hereof.

     "Affiliate" of any specified Person means any other Person directly or
indirectly controlling or controlled by or under direct or indirect common
control with such specified Person; provided, however, that an Affiliate of the
Guarantor shall not be deemed to be an Affiliate of the Trust.  For the purposes
of this definition, "control" when used with respect to any specified Person
means the power to direct the management and policies of such Person, directly
or indirectly, whether through the ownership of voting securities, by contract
or otherwise; and the terms "controlling"  and "controlled" have meanings
correlative to the foregoing.

     "Board of Directors" means either the board of directors of the Guarantor
or any committee of that board duly authorized to act hereunder.
<PAGE>
 
     "Common Securities" means the securities representing common undivided
beneficial interests in the assets of the Trust.

     "Event of Default" means a default by the Guarantor on any of its payment
or other obligations under this Guarantee Agreement; provided, however, that,
except with respect to a default in payment of any Guarantee Payments, the
Guarantor shall have received notice of default and shall not have cured such
default within 60 days after receipt of such notice.

     "Exchange Guarantee" means a guarantee issued by the Guarantor pursuant to
the Exchange Guarantee Agreement and registered under the Securities Act
pursuant to the Guarantee Exchange and Registration Rights Agreement.

     "Exchange Guarantee Agreement" means a guarantee agreement substantially
similar to this Guarantee Agreement, to be entered into by the Guarantor and the
Guarantee Trustee pursuant to the Guarantee Exchange and Registration Rights
Agreement.

     "Guarantee" has the meaning set forth in Section 5.1.

     "Guarantee Exchange and Registration Rights Agreement" means an agreement
dated November 26, 1996 among the Guarantor, the Trust and certain Purchasers
named therein.

     "Guarantee Payments" means the following payments or distributions, without
duplication, with respect to the Capital Securities, to the extent not paid or
made by or on behalf of the Trust: (i) any accrued and unpaid Distributions (as
defined in the Trust Agreement) required to be paid on the Capital Securities,
to the extent the Trust shall have funds on hand available therefor at such
time, (ii) the applicable Redemption Price (as defined in the Trust Agreement),
to the extent the Trust shall have funds on hand available therefor at such
time, and (iii) upon a voluntary or involuntary termination, winding up or
liquidation of the Trust, unless Debentures are distributed to the Holders, the
lesser of (a) the aggregate of the Liquidation Distribution (as defined in the
Trust Agreement) and (b) the amount of assets of the Trust remaining available
for distribution to Holders of Capital Securities.

     "Guarantee Trustee" means Wilmington Trust Company, until a Successor
Guarantee Trustee has been appointed and has accepted such appointment pursuant
to the terms of this Guarantee Agreement, and thereafter means each such
Successor Guarantee Trustee.

     "Holder" means any holder, as registered on the books and records of the
Trust, of any Capital Securities; provided, however, that in determining whether
the holders of the requisite percentage of Capital Securities have given any
request, notice, consent or waiver hereunder, "Holder" shall not include the
Guarantor, the Guarantee Trustee, or any Affiliate of the Guarantor or the
Guarantee Trustee.

     "Indenture" means the Junior Subordinated Indenture dated as of
November 15, 1996, as supplemented and amended between the Guarantor and
Wilmington Trust Company, as trustee.

     "List of Holders" has the meaning specified in Section 2.2(a).

     "Majority in Liquidation Amount of the Capital Securities" means, except as
provided by the Trust Indenture Act, a vote by the Holder(s), voting separately
as a class, of more than 50% of the Liquidation Amount of all then outstanding
Capital Securities issued by the Trust.

                                      -2-
<PAGE>
 
     "Officers' Certificate" means, with respect to any Person, a certificate
signed by the Chairman or a Vice Chairman of the Board of Directors of such
Person or the President or a Vice President of such Person, and by the
Treasurer, an Assistant Treasurer, the Secretary or an Assistant Secretary of
such Person, and delivered to the Guarantee Trustee. Any Officers' Certificate
delivered with respect to compliance with a condition or covenant provided for
in this Guarantee Agreement shall include:

     (a) a statement that each officer signing the Officers' Certificate has
read the covenant or condition and the definitions relating thereto;

     (b) a brief statement of the nature and scope of the examination or
investigation undertaken by each officer in rendering the Officers' Certificate;

     (c) a statement that each officer has made such examination or
investigation as, in such officer's opinion, is necessary to enable such officer
to express an informed opinion as to whether or not such covenant or condition
has been complied with; and

     (d) a statement as to whether, in the opinion of each officer, such
condition or covenant has been complied with.

     "Other Guarantees" means any guarantees similar to the Guarantee issued,
from time to time, by the Guarantor on behalf of holders of one or more series
of capital securities issued by one or more FBS Trusts (as defined in the
Indenture) other than the Trust.

     "Person" means a legal person, including any individual, corporation,
estate, partnership, joint venture, association, joint stock company, limited
liability company, trust, unincorporated association, or government or any
agency or political subdivision thereof, or any other entity of whatever nature.

     "Responsible Officer" means, with respect to the Guarantee Trustee, any
officer of the Corporate Trust Department of the Guarantee Trustee and also
means, with respect to a particular corporate trust matter, any other officer to
whom such matter is referred because of that officer's knowledge of and
familiarity with the particular subject.

     "Securities Act" means the Securities Act of 1933, as amended.

     "Successor Guarantee Trustee" means a successor Guarantee Trustee
possessing the qualifications to act as Guarantee Trustee under Section 4.1.

     "Trust Indenture Act" means the Trust Indenture Act of 1939, as amended.

                       ARTICLE II.  TRUST INDENTURE ACT

     SECTION 2.1.  Trust Indenture Act; Application.

     (a) This Guarantee Agreement is subject to the provisions of the Trust
Indenture Act that are required to be part of this Guarantee Agreement and
shall, to the extent applicable, be governed by such provisions.

     (b) If and to the extent that any provision of this Guarantee Agreement
limits, qualifies or conflicts with the duties imposed by Sections 310 to 317,
inclusive, of the Trust Indenture Act, such imposed duties shall control.

                                      -3-
<PAGE>
 
     SECTION 2.2.  List of Holders.

     (a) The Guarantor shall furnish or cause to be furnished to the Guarantee
Trustee (a) semiannually, on or before January 15 and July 15 of each year, a
list, in such form as the Guarantee Trustee may reasonably require, of the names
and addresses of the Holders ("List of Holders") as of a date not more than 15
days prior to the delivery thereof, and (b) at such other times as the Guarantee
Trustee may request in writing, within 30 days after the receipt by the
Guarantor of any such request, a List of Holders as of a date not more than 15
days prior to the time such list is furnished, in each case to the extent such
information is in the possession or control of the Guarantor and is not
identical to a previously supplied list of Holders or has not otherwise been
received by the Guarantee Trustee in its capacity as such. The Guarantee Trustee
may destroy any List of Holders previously given to it on receipt of a new List
of Holders.

     (b) The Guarantee Trustee shall comply with its obligations under Section
311(a), Section 311(b) and Section 312(b) of the Trust Indenture Act.

     SECTION 2.3.  Reports by the Guarantee Trustee.

     Not later than July 15 of each year, commencing July 15, 1997, the
Guarantee Trustee shall provide to the Holders such reports as are required by
Section 313 of the Trust Indenture Act, if any, in the form and in the manner
provided by Section 313 of the Trust Indenture Act. The Guarantee Trustee shall
also comply with the requirements of Section 313(d) of the Trust Indenture Act.

     SECTION 2.4.  Periodic Reports to the Guarantee Trustee.

     The Guarantor shall provide to the Guarantee Trustee, the Securities and
Exchange Commission and the Holders such documents, reports and information, if
any, as required by Section 314 of the Trust Indenture Act and the compliance
certificate required by Section 314 of the Trust Indenture Act, in the form, in
the manner and at the times required by Section 314 of the Trust Indenture Act.

     SECTION 2.5.  Evidence of Compliance with Conditions Precedent.

     The Guarantor shall provide to the Guarantee Trustee such evidence of
compliance with such conditions precedent, if any, provided for in this
Guarantee Agreement that relate to any of the matters set forth in Section
314(c) of the Trust Indenture Act. Any certificate or opinion required to be
given by an officer pursuant to Section 314(c)(1) may be given in the form of an
Officers' Certificate.

     SECTION 2.6.  Events of Default; Waiver.

     The Holders of a Majority in Liquidation Amount of the Capital Securities
may, by vote, on behalf of the Holders, waive any past Event of Default and its
consequences. Upon such waiver, any such Event of Default shall cease to exist,
and any Event of Default arising therefrom shall be deemed to have been cured,
for every purpose of this Guarantee Agreement, but no such waiver shall extend
to any subsequent or other default or Event of Default or impair any right
consequent therefrom.

     SECTION 2.7.  Event of Default; Notice.

     (a) The Guarantee Trustee shall, within 90 days after the occurrence of an
Event of Default, transmit by mail, first class postage prepaid, to the Holders,
notices of all Events of Default known to the Guarantee Trustee, unless such
defaults have been cured before the giving of such notice, provided, that,
except in the case of a default in the payment of a Guarantee Payment, the
Guarantee Trustee 

                                      -4-
<PAGE>
 
shall be protected in withholding such notice if and so long as the Board of
Directors, the executive committee or a trust committee of directors and/or
Responsible Officers of the Guarantee Trustee in good faith determines that the
withholding of such notice is in the interests of the Holders.

     (b) The Guarantee Trustee shall not be deemed to have knowledge of any
Event of Default unless the Guarantee Trustee shall have received written
notice, or a Responsible Officer charged with the administration of this
Guarantee Agreement shall have obtained written notice, of such Event of
Default.

     SECTION 2.8.  Conflicting Interests.

     The Trust Agreement shall be deemed to be specifically described in this
Guarantee Agreement for the purposes of clause (i) of the first proviso
contained in Section 310(b) of the Trust Indenture Act.

       ARTICLE III.  POWERS, DUTIES AND RIGHTS OF THE GUARANTEE TRUSTEE

     SECTION 3.1.  Powers and Duties of the Guarantee Trustee.

     (a) This Guarantee shall be held by the Guarantee Trustee for the benefit
of the Holders, and the Guarantee Trustee shall not transfer this Guarantee to
any Person except (i) the Guarantee Trustee shall enter into the Exchange
Guarantee Agreement, if and when required by the Guarantee Exchange and
Registration Rights Agreement, and to exchange the Guarantee for an Exchange
Guarantee in an exchange registered under the Securities Act pursuant to the
provisions of the Guarantee Exchange and Registration Rights Agreement or (ii)
to a Holder exercising his or her rights pursuant to Section 5.4(iv) or to a
Successor Guarantee Trustee on acceptance by such Successor Guarantee Trustee of
its appointment to act as Successor Guarantee Trustee. The right, title and
interest of the Guarantee Trustee shall automatically vest in any Successor
Guarantee Trustee, upon acceptance by such Successor Guarantee Trustee of its
appointment hereunder, and such vesting and cessation of title shall be
effective whether or not conveyancing documents have been executed and delivered
pursuant to the appointment of such Successor Guarantee Trustee.

     (b) If an Event of Default has occurred and is continuing, the Guarantee
Trustee shall enforce this Guarantee for the benefit of the Holders.

     (c) The Guarantee Trustee, before the occurrence of any Event of Default
and after the curing of all Events of Default that may have occurred, shall
undertake to perform only such duties as are specifically set forth in this
Guarantee Agreement, and no implied covenants shall be read into this Guarantee
Agreement against the Guarantee Trustee. In case an Event of Default has
occurred (that has not been cured or waived pursuant to Section 2.6), the
Guarantee Trustee shall exercise such of the rights and powers vested in it by
this Guarantee Agreement, and use the same degree of care and skill in its
exercise thereof, as a prudent person would exercise or use under the
circumstances in the conduct of his or her own affairs.

     (d) No provision of this Guarantee Agreement shall be construed to relieve
the Guarantee Trustee from liability for its own negligent action, its own
negligent failure to act or its own willful misconduct, except that:

          (i) prior to the occurrence of any Event of Default and after the
     curing or waiving of all such Events of Default that may have occurred:

               (A) the duties and obligations of the Guarantee Trustee shall be

                                      -5-
<PAGE>
 
          determined solely by the express provisions of this Guarantee
          Agreement, and the Guarantee Trustee shall not be liable except for
          the performance of such duties and obligations as are specifically set
          forth in this Guarantee Agreement; and

               (B) in the absence of bad faith on the part of the Guarantee
          Trustee, the Guarantee Trustee may conclusively rely, as to the truth
          of the statements and the correctness of the opinions expressed
          therein, upon any certificates or opinions furnished to the Guarantee
          Trustee and conforming to the requirements of this Guarantee
          Agreement; but in the case of any such certificates or opinions that
          by any provision hereof or of the Trust Indenture Act are specifically
          required to be furnished to the Guarantee Trustee, the Guarantee
          Trustee shall be under a duty to examine the same to determine whether
          or not they conform to the requirements of this Guarantee Agreement;

          (ii) the Guarantee Trustee shall not be liable for any error of
     judgment made in good faith by a Responsible Officer of the Guarantee
     Trustee, unless it shall be proved that the Guarantee Trustee was negligent
     in ascertaining the pertinent facts upon which such judgment was made;

          (iii) the Guarantee Trustee shall not be liable with respect to any
     action taken or omitted to be taken by it in good faith in accordance with
     the direction of the Holders of not less than a Majority in Liquidation
     Amount of the Capital Securities relating to the time, method and place of
     conducting any proceeding for any remedy available to the Guarantee
     Trustee, or exercising any trust or power conferred upon the Guarantee
     Trustee under this Guarantee Agreement; and

          (iv) no provision of this Guarantee Agreement shall require the
     Guarantee Trustee to expend or risk its own funds or otherwise incur
     personal financial liability in the performance of any of its duties or in
     the exercise of any of its rights or powers, if the Guarantee Trustee shall
     have reasonable grounds for believing that the repayment of such funds or
     liability is not reasonably assured to it under the terms of this Guarantee
     Agreement or adequate indemnity against such risk or liability is not
     reasonably assured to it.

     SECTION 3.2.  Certain Rights of Guarantee Trustee.

     (a) Subject to the provisions of Section 3.1:

          (i) The Guarantee Trustee may rely and shall be fully protected in
     acting or refraining from acting upon any resolution, certificate,
     statement, instrument, opinion, report, notice, request, direction,
     consent, order, bond, debenture, note, other evidence of indebtedness or
     other paper or document reasonably believed by it to be genuine and to have
     been signed, sent or presented by the proper party or parties.

          (ii) Any direction or act of the Guarantor contemplated by this
     Guarantee Agreement shall be sufficiently evidenced by an Officers'
     Certificate unless otherwise prescribed herein.

          (iii) Whenever, in the administration of this Guarantee Agreement, the
     Guarantee Trustee shall deem it desirable that a matter be proved or
     established before taking, suffering or omitting to take any action
     hereunder, the Guarantee Trustee (unless other evidence is herein
     specifically prescribed) may, in the absence of bad faith on its part,
     request and rely upon an 

                                      -6-
<PAGE>
 
     Officers' Certificate which, upon receipt of such request from the
     Guarantee Trustee, shall be promptly delivered by the Guarantor.

          (iv) The Guarantee Trustee may consult with legal counsel, and the
     written advice or opinion of such legal counsel with respect to legal
     matters shall be full and complete authorization and protection in respect
     of any action taken, suffered or omitted to be taken by it hereunder in
     good faith and in accordance with such advice or opinion. Such legal
     counsel may be legal counsel to the Guarantor or any of its Affiliates and
     may be one of its employees. The Guarantee Trustee shall have the right at
     any time to seek instructions concerning the administration of this
     Guarantee Agreement from any court of competent jurisdiction.

          (v) The Guarantee Trustee shall be under no obligation to exercise
     any of the rights or powers vested in it by this Guarantee Agreement at the
     request or direction of any Holder, unless such Holder shall have provided
     to the Guarantee Trustee such adequate security and indemnity as would
     satisfy a reasonable person in the position of the Guarantee Trustee,
     against the costs, expenses (including attorneys' fees and expenses) and
     liabilities that might be incurred by it in complying with such request or
     direction, including such reasonable advances as may be requested by the
     Guarantee Trustee; provided that, nothing contained in this Section
     3.2(a)(v) shall be taken to relieve the Guarantee Trustee, upon the
     occurrence of an Event of Default, of its obligation to exercise the rights
     and powers vested in it by this Guarantee Agreement.

          (vi) The Guarantee Trustee shall not be bound to make any
     investigation into the facts or matters stated in any resolution,
     certificate, statement, instrument, opinion, report, notice, request,
     direction, consent, order, bond, debenture, note, other evidence of
     indebtedness or other paper or document, but the Guarantee Trustee, in its
     discretion, may make such further inquiry or investigation into such facts
     or matters as it may see fit.

          (vii) The Guarantee Trustee may execute any of the trusts or powers
     hereunder or perform any duties hereunder either directly or by or through
     its agents or attorneys, and the Guarantee Trustee shall not be responsible
     for any misconduct or negligence on the part of any such agent or attorney
     appointed with due care by it hereunder.

          (viii) Whenever in the administration of this Guarantee Agreement the
     Guarantee Trustee shall deem it desirable to receive instructions with
     respect to enforcing any remedy or right or taking any other action
     hereunder, the Guarantee Trustee (A) may request instructions from the
     Holders, (B) may refrain from enforcing such remedy or right or taking such
     other action until such instructions are received, and (C) shall be
     protected in acting in accordance with such instructions.

     (b) No provision of this Guarantee Agreement shall be deemed to impose any
duty or obligation on the Guarantee Trustee to perform any act or acts or
exercise any right, power, duty or obligation conferred or imposed on it in any
jurisdiction in which it shall be illegal, or in which the Guarantee Trustee
shall be unqualified or incompetent in accordance with applicable law, to
perform any such act or acts or to exercise any such right, power, duty or
obligation. No permissive power or authority available to the Guarantee Trustee
shall be construed to be a duty to act in accordance with such power and
authority.

                                      -7-
<PAGE>
 
     SECTION 3.3.  Indemnity.

     The Guarantor agrees to indemnify the Guarantee Trustee for, and to hold it
harmless against, any loss, liability or expense incurred without negligence or
bad faith on the part of the Guarantee Trustee, arising out of or in connection
with the acceptance or administration of this Guarantee Agreement, including the
costs and expenses of defending itself against any claim or liability in
connection with the exercise or performance of any of its powers or duties
hereunder.

                        ARTICLE IV.  GUARANTEE TRUSTEE

     SECTION 4.1.  Guarantee Trustee:  Eligibility.

     (a) There shall at all times be a Guarantee Trustee which shall:

           (i) not be an Affiliate of the Guarantor; and

           (ii) be a Person that is eligible pursuant to the Trust Indenture Act
     to act as such and has a combined capital and surplus of at least
     $50,000,000, and shall be a corporation meeting the requirements of Section
     310(a) of the Trust Indenture Act.  If such corporation publishes reports
     of condition at least annually, pursuant to law or to the requirements of
     the supervising or examining authority, then, for the purposes of this
     Section 4.1(a)(ii) and to the extent permitted by the Trust Indenture Act,
     the combined capital and surplus of such corporation shall be deemed to be
     its combined capital and surplus as set forth in its most recent report of
     condition so published.

     (b) If at any time the Guarantee Trustee shall cease to be eligible to so
act under Section 4.1(a), the Guarantee Trustee shall immediately resign in the
manner and with the effect set out in Section 4.2(c).

     (c) If the Guarantee Trustee has or shall acquire any "conflicting
interest" within the meaning of Section 310(b) of the Trust Indenture Act, the
Guarantee Trustee and Guarantor shall in all respects comply with the provisions
of Section 310(b) of the Trust Indenture Act.

     SECTION 4.2.  Appointment, Removal and Resignation of the Guarantee
Trustee.

     (a) Subject to Section 4.2(b), the Guarantee Trustee may be appointed or
removed without cause at any time by the Guarantor.

     (b) The Guarantee Trustee shall not be removed until a Successor Guarantee
Trustee has been appointed and has accepted such appointment by written
instrument executed by such Successor Guarantee Trustee and delivered to the
Guarantor.

     (c) The Guarantee Trustee appointed hereunder shall hold office until a
Successor Guarantee Trustee shall have been appointed or until its removal or
resignation.  The Guarantee Trustee may resign from office (without need for
prior or subsequent accounting) by an instrument in writing executed by the
Guarantee Trustee and delivered to the Guarantor, which resignation shall not
take effect until a Successor Guarantee Trustee has been appointed and has
accepted such appointment by instrument in writing executed by such Successor
Guarantee Trustee and delivered to the Guarantor and the resigning Guarantee
Trustee.

                                      -8-
<PAGE>
 
     (d) If no Successor Guarantee Trustee shall have been appointed and
accepted appointment as provided in this Section 4.2 within 60 days after
delivery to the Guarantor of an instrument of resignation, the resigning
Guarantee Trustee may petition, at the expense of the Guarantor, any court of
competent jurisdiction for appointment of a Successor Guarantee Trustee.  Such
court may thereupon, after prescribing such notice, if any, as it may deem
proper, appoint a Successor Guarantee Trustee.

                             ARTICLE V.  GUARANTEE

     SECTION 5.1.  Guarantee.

     The Guarantor irrevocably and unconditionally agrees to pay in full to the
Holders the Guarantee Payments (without duplication of amounts theretofore paid
by or on behalf of the Trust), as and when due, regardless of any defense, right
of set-off or counterclaim which the Trust may have or assert other than the
defense of payment (the "Guarantee").  The Guarantor's obligation to make a
Guarantee Payment may be satisfied by direct payment of the required amounts by
the Guarantor to the Holders or by causing the Trust to pay such amounts to the
Holders.

     SECTION 5.2.  Waiver of Notice and Demand.

     The Guarantor hereby waives notice of acceptance of the Guarantee and of
any liability to which it applies or may apply, presentment, demand for payment,
any right to require a proceeding first against the Guarantee Trustee, Trust or
any other Person before proceeding against the Guarantor, protest, notice of
nonpayment, notice of dishonor, notice of redemption and all other notices and
demands.

     SECTION 5.3.  Obligations Not Affected.

     The obligations, covenants, agreements and duties of the Guarantor under
this Guarantee Agreement shall in no way be affected or impaired by reason of
the happening from time to time of any of the following:

     (a) the release or waiver, by operation of law or otherwise, of the
performance or observance by the Trust of any express or implied agreement,
covenant, term or condition relating to the Capital Securities to be performed
or observed by the Trust;

     (b) the extension of time for the payment by the Trust of all or any
portion of the Distributions (other than an extension of time for payment of
Distributions that results from the extension of any interest payment period on
the Debentures as provided in the Indenture), Redemption Price, Liquidation
Distribution or any other sums payable under the terms of the Capital Securities
or the extension of time for the performance of any other obligation under,
arising out of, or in connection with, the Capital Securities;

     (c) any failure, omission, delay or lack of diligence on the part of the
Holders to enforce, assert or exercise any right, privilege, power or remedy
conferred on the Holders pursuant to the terms of the Capital Securities, or any
action on the part of the Trust granting indulgence or extension of any kind;

     (d) the voluntary or involuntary liquidation, dissolution, sale of any
collateral, receivership, insolvency, bankruptcy, assignment for the benefit of
creditors, reorganization, 

                                      -9-
<PAGE>
 
arrangement, composition or readjustment of debt of, or other similar
proceedings affecting, the Trust or any of the assets of the Trust;

     (e) any invalidity of, or defect or deficiency in, the Capital Securities;

     (f) the settlement or compromise of any obligation guaranteed hereby or
hereby incurred; or

     (g) any other circumstance whatsoever that might otherwise constitute a
legal or equitable discharge or defense of a guarantor, it being the intent of
this Section 5.3 that the obligations of the Guarantor hereunder shall be
absolute and unconditional under any and all circumstances.

There shall be no obligation of the Holders to give notice to, or obtain the
consent of, the Guarantor with respect to the happening of any of the foregoing.

     SECTION 5.4.  Rights of Holders.

     The Guarantor expressly acknowledges that: (i) this Guarantee will be
deposited with the Guarantee Trustee to be held for the benefit of the Holders;
(ii) the Guarantee Trustee has the right to enforce this Guarantee on behalf of
the Holders; (iii) the Holders of a Majority in Liquidation Amount of the
Capital Securities have the right to direct the time, method and place of
conducting any proceeding for any remedy available to the Guarantee Trustee in
respect of this Guarantee Agreement or exercising any trust or power conferred
upon the Guarantee Trustee under this Guarantee Agreement; and (iv) any Holder
may institute a legal proceeding directly against the Guarantor to enforce its
rights under this Guarantee Agreement, without first instituting a legal
proceeding against the Guarantee Trustee, the Trust or any other Person.

     SECTION 5.5.  Guarantee of Payment.

     This Guarantee creates a guarantee of payment and not of collection.  This
Guarantee will not be discharged except by payment of the Guarantee Payments in
full (without duplication of amounts theretofore paid by the Trust) or upon
distribution of Debentures to Holders as provided in the Trust Agreement.

     SECTION 5.6.  Subrogation.

     The Guarantor shall be subrogated to all (if any) rights of the Holders
against the Trust in respect of any amounts paid to the Holders by the Guarantor
under this Guarantee Agreement and shall have the right to waive payment by the
Trust pursuant to Section 5.1; provided, however, that the Guarantor shall not
(except to the extent required by mandatory provisions of law) be entitled to
enforce or exercise any rights which it may acquire by way of subrogation or any
indemnity, reimbursement or other agreement, in all cases as a result of payment
under this Guarantee, if, at the time of any such payment, any amounts are due
and unpaid under this Guarantee.  If any amount shall be paid to the Guarantor
in violation of the preceding sentence, the Guarantor agrees to hold such amount
in trust for the Holders and to pay over such amount to the Holders.

     SECTION 5.7.  Independent Obligations.

     The Guarantor acknowledges that its obligations hereunder are independent
of the obligations of the Trust with respect to the Capital Securities and that
the Guarantor shall be liable as principal and as debtor hereunder to make
Guarantee Payments pursuant to the terms of this Guarantee 

                                      -10-
<PAGE>
 
Agreement notwithstanding the occurrence of any event referred to in subsections
(a) through (g), inclusive, of Section 5.3 hereof.

                   ARTICLE VI.  COVENANTS AND SUBORDINATION

     SECTION 6.1.  Subordination.

     The obligations of the Guarantor under this Guarantee will constitute
unsecured obligations of the Guarantor and will rank subordinate and junior in
right of payment to all Senior and Subordinated Debt (as defined in the
Indenture) in the same manner as Debentures (as defined in the Trust Agreement).

     SECTION 6.2.  Pari Passu Guarantees.

     The obligations of the Guarantor under this Guarantee shall rank pari passu
with the obligations of the Guarantor under all Other Guarantees.

      ARTICLE VII.  CONSOLIDATION, MERGER, CONVEYANCE, TRANSFER OR LEASE

     SECTION 7.1.  Guarantor May Consolidate, Etc., Only on Certain Terms.

     The Guarantor shall not consolidate with or merge into any other Person or
convey, transfer or lease its properties and assets substantially as an entirety
to any Person, and no Person shall consolidate with or merge into the Guarantor
or convey, transfer or lease its properties and assets substantially as an
entirety to the Guarantor, unless:

     (1) in case the Guarantor shall consolidate with or merge into another
Person or convey, transfer or lease its properties and assets substantially as
an entirety to any Person, the Person formed by such consolidation or into which
the Guarantor is merged or the Person which acquires by conveyance or transfer,
or which leases, the properties and assets of the Guarantor substantially as an
entirety shall be a corporation, partnership or trust organized and existing
under the laws of the United States of America or any State or the District of
Columbia, and shall expressly assume the Guarantor's obligations under this
Guarantee;

     (2) immediately after giving effect thereto, no Event of Default, and no
event which, after notice or lapse of time, or both, would become an Event of
Default, shall have happened and be continuing;

     (3) such consolidation, merger, conveyance, transfer or lease is permitted
under the Trust Agreement and the Indenture and does not give rise to any breach
or violation of the Trust Agreement or the Indenture; and

     (4) the Guarantor has delivered to the Guarantee Trustee an Officers'
Certificate and an Opinion of Counsel, each stating that such consolidation,
merger, conveyance, transfer or lease and assumption of the Guarantor's
obligations under this Guarantee Agreement comply with this Article and that all
conditions precedent herein provided for relating to such transaction have been
complied with; and the Guarantee Trustee, subject to Section 3.1 hereof, may
rely upon such Officers' Certificate and Opinion of Counsel as conclusive
evidence that such transaction complies with this Section 7.1.

                                      -11-
<PAGE>
 
     SECTION 7.2.  Successor Guarantor Substituted.

     Upon any consolidation or merger by the Guarantor with or into any other
Person, or any conveyance, transfer or lease by the Guarantor of its properties
and assets substantially as an entirety to any Person in accordance with Section
7.1, the successor Person formed by such consolidation or into which the
Guarantor is merged or to which such conveyance, transfer or lease is made shall
succeed to, and be substituted for, and may exercise every right and power of,
the Guarantor under this Guarantee Agreement with the same effect as if such
successor Person had been named as the Guarantor herein; and in the event of any
such conveyance, transfer or lease the Guarantor shall be discharged from all
obligations and covenants under this Guarantee Agreement.

                          ARTICLE VIII.  TERMINATION

     SECTION 8.1.  Termination.

     This Guarantee Agreement shall terminate and be of no further force and
effect upon the earliest of (i) the execution of the Exchange Guarantee
Agreement and the consummation of the exchange of the Guarantee for the Exchange
Guarantee pursuant to the Guarantee Exchange and Registration Rights Agreement,
(ii) full payment of the applicable Redemption Price of all Capital Securities,
(iii) the distribution of Debentures to the Holders in exchange for all of the
Capital Securities or (iv) full payment of the amounts payable in accordance
with the Trust Agreement upon liquidation of the Trust.  Notwithstanding the
foregoing clauses (ii) through (iv), this Guarantee Agreement will continue to
be effective or will be reinstated if it has been terminated pursuant to one of
such clauses (ii) through (iv), as the case may be, if at any time any Holder
must restore payment of any sums paid with respect to Capital Securities or this
Guarantee Agreement.

                          ARTICLE IX.  MISCELLANEOUS

     SECTION 9.1.  Successors and Assigns.

     All guarantees and agreements contained in this Guarantee Agreement shall
bind the successors, assigns, receivers, trustees and representatives of the
Guarantor and shall inure to the benefit of the Holders of the Capital
Securities then outstanding.  Except in connection with a consolidation, merger
or sale involving the Guarantor that is permitted under Article VII hereof and
Article VIII of the Indenture, the Guarantor shall not assign its obligations
hereunder.

     SECTION 9.2.  Amendments.

     Except with respect to any changes which do not adversely affect the rights
of the Holders in any material respect (in which case no vote will be required),
this Guarantee Agreement may not be amended without the prior approval of the
Holders of not less than a Majority in Liquidation Amount of the Capital
Securities.  The provisions of Article VI of the Trust Agreement concerning
meetings of the Holders shall apply to the giving of such approval.

     SECTION 9.3.  Notices.

     Any notice, request or other communication required or permitted to be
given hereunder shall be in writing, duly signed by the party giving such
notice, and delivered, telecopied or mailed by first class mail as follows:

                                      -12-
<PAGE>
 
     (a) if given to the Guarantor, to the address set forth below or such other
address, facsimile number or to the attention of such other Person as the
Guarantor may give notice to the Holders:

          First Bank System, Inc.
          601 Second Avenue South
          Minneapolis, Minnesota 55402

          Facsimile No.: (612) 973-0965
          Attention: Treasurer

     (b) if given to the Trust, in care of the Guarantee Trustee, at the Trust's
(and the Guarantee Trustee's) address set forth below or such other address as
the Guarantee Trustee on behalf of the Trust may give notice to the Holders:

          FBS Capital I
          c/o First Bank System, Inc.
          601 Second Avenue South
          Minneapolis, Minnesota 55402

          Facsimile No.: (612) 973-0965
          Attention: Treasurer

          with a copy to:

          Wilmington Trust Company
          1100 North Market
          Wilmington, Delaware 19890

          Facsimile No.: (302) 651-1000
          Attention: Corporate Trust Administration

     (c) if given to any Holder, at the address set forth on the books and
records of the Trust.

     All notices hereunder shall be deemed to have been given when received in
person, telecopied with receipt confirmed, or mailed by first class mail,
postage prepaid, except that if a notice or other document is refused delivery
or cannot be delivered because of a changed address of which no notice was
given, such notice or other document shall be deemed to have been delivered on
the date of such refusal or inability to deliver.

     SECTION 9.4.  Benefit.

     This Guarantee is solely for the benefit of the Holders and is not
separately transferable from the Capital Securities, except that it shall be
exchanged, if at all, for an Exchange Guarantee in an exchange registered under
the Securities Act pursuant to the provisions of the Guarantee Exchange and
Registration Rights Agreement.

     SECTION 9.5.  Interpretation.

     In this Guarantee Agreement, unless the context otherwise requires:

                                      -13-
<PAGE>
 
     (a) capitalized terms used in this Guarantee Agreement but not defined in
the preamble hereto have the respective meanings assigned to them in Section
1.1;

     (b) a term defined anywhere in this Guarantee Agreement has the same
meaning throughout;

     (c) all references to "the Guarantee Agreement" or "this Guarantee
Agreement" are to this Guarantee Agreement as modified, supplemented or amended
from time to time;

     (d) all references in this Guarantee Agreement to Articles and Sections are
to Articles and Sections of this Guarantee Agreement unless otherwise specified;

     (e) a term defined in the Trust Indenture Act has the same meaning when
used in this Guarantee Agreement unless otherwise defined in this Guarantee
Agreement or unless the context otherwise requires;

     (f) a reference to the singular includes the plural and vice versa; and

     (g) the masculine, feminine or neuter genders used herein shall include the
masculine, feminine and neuter genders.

     SECTION 9.6.  Governing Law.

     THIS GUARANTEE AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED AND INTERPRETED
IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK WITHOUT REGARD TO THE
CONFLICT OF LAW PRINCIPLES THEREOF.

                                      -14-
<PAGE>
 
     This instrument may be executed in any number of counterparts, each of
which so executed shall be deemed to be an original, but all such counterparts
shall together constitute but one and the same instrument.

     THIS GUARANTEE AGREEMENT is executed as of the day and year first above
written.

                                    FIRST BANK SYSTEM, INC.
                                         
                                           /s/ David P. Grandstrand
                                    By: ___________________________________
                                    Name: David P. Grandstrand
                                    Title: Senior Vice President and Treasurer


                                    WILMINGTON TRUST COMPANY
                                    as Guarantee Trustee

                                           /s/ Norma P. Closs  
                                    By: ___________________________________
                                    Name: Norma P. Closs
                                    Title: Vice President

<PAGE>
 
                                                                    Exhibit 4.10

- --------------------------------------------------------------------------------


                              GUARANTEE AGREEMENT


                                    Between


                            FIRST BANK SYSTEM, INC.
                                (as Guarantor)


                                      and


                           WILMINGTON TRUST COMPANY
                                 (as Trustee)



                                  dated as of



- --------------------------------------------------------------------------------
<PAGE>
 
                            CROSS-REFERENCE TABLE*

<TABLE>
<CAPTION>

         Section of Trust                                      Section of
Indenture Act of 1939, as amended                          Guarantee Agreement
- ---------------------------------                          -------------------
<S>                                                        <C>

               310(a).                                             4.1(a)
               310(b).                                          4.1(c), 2.8
               310(c).                                          Inapplicable
               311(a).                                             2.2(b)
               311(b).                                             2.2(b)
               311(c).                                          Inapplicable
               312(a).                                             2.2(a)
               312(b).                                             2.2(b)
               313.                                                2.3
               314(a).                                             2.4
               314(b).                                          Inapplicable
               314(c).                                             2.5
               314(d).                                          Inapplicable
               314(e).                                          1.1, 2.5, 3.2
               314(f).                                             2.1, 3.2
               315(a).                                             3.1(d)
               315(b).                                             2.7
               315(c).                                             3.1
               315(d).                                             3.1(d)
               316(a).                                          1.1, 2.6, 5.4
               316(b).                                             5.3
               316(c).                                             9.2
               317(a).                                          Inapplicable
               317(b).                                          Inapplicable
               318(a).                                             2.1(b)
               318(b).                                             2.1
               318(c).                                             2.1(a)
</TABLE>
- ----------------
*  This Cross-Reference Table does not constitute part of the Guarantee
   Agreement and shall not affect the interpretation of any of its terms or
   provisions.
<PAGE>
 

                               TABLE OF CONTENTS
 

                                                                            Page
                                                                            ----
ARTICLE I.    DEFINITIONS                                                      1
                                                                            
              Section 1.1. Definitions                                         1
                                                                               
ARTICLE II.   TRUST INDENTURE ACT                                              3
              Section 2.1. Trust Indenture Act; Application                    3
              Section 2.2. List of Holders                                     4
              Section 2.3. Reports by the Guarantee Trustee                    4
              Section 2.4. Periodic Reports to Guarantee Trustee               4
              Section 2.5. Evidence of Compliance with Conditions Precedent    4
              Section 2.6. Events of Default; Waiver                           4
              Section 2.7. Event of Default; Notice                            4
              Section 2.8. Conflicting Interests                               5
                                                                               
ARTICLE III.  POWERS, DUTIES AND RIGHTS OF THE GUARANTEE                       
                TRUSTEE                                                        5
              Section 3.1. Powers and Duties of the Guarantee Trustee          5
              Section 3.2. Certain Rights of Guarantee Trustee                 6
              Section 3.3. Indemnity                                           8
                                                                               
ARTICLE IV.   GUARANTEE TRUSTEE                                                8
              Section 4.1. Guarantee Trustee; Eligibility                      8
              Section 4.2. Appointment, Removal and Resignation of the         
                             Guarantee Trustee                                 8
                                                                               
ARTICLE V.    GUARANTEE                                                        8
              Section 5.1. Guarantee                                           8
              Section 5.2. Waiver of Notice and Demand                         9
              Section 5.3. Obligations Not Affected                            9
              Section 5.4. Rights of Holders                                  10
              Section 5.5. Guarantee of Payment                               10
              Section 5.6. Subrogation                                        10
              Section 5.7. Independent Obligations                            10
                                                                               
ARTICLE VI.   COVENANTS AND SUBORDINATION                                     11
              Section 6.1. Subordination                                      11
              Section 6.2. Pari Passu Guarantees                              11
                                                                               
ARTICLE VII.  CONSOLIDATION, MERGER, SALE OF ASSETS                           
                AND OTHER TRANSACTIONS                                        11
              Section 7.1. Guarantor May Consolidate, Etc., Only              
                             on Certain Terms                                 11
              Section 7.2. Successor Guarantor Substituted                    12
                                                                            
ARTICLE VIII. TERMINATION                                                     12
              Section 8.1. Termination                                        12

<PAGE>
 
ARTICLE IX.   MISCELLANEOUS                                                   12
              Section 9.1. Successors and Assigns                             12
              Section 9.2. Amendments                                         12
              Section 9.3. Notices                                            12
              Section 9.4. Benefit                                            13
              Section 9.5. Interpretation                                     13
              Section 9.6. Governing Law                                      14
                                                                           
<PAGE>
 
                              GUARANTEE AGREEMENT


     This GUARANTEE AGREEMENT, dated as of _____________, is executed and
delivered by FIRST BANK SYSTEM, INC., a Delaware corporation (the "Guarantor")
having its principal office at 601 Second Avenue South, Minneapolis, Minnesota
55402, and Wilmington Trust Company, a Delaware banking corporation, as trustee
(the "Guarantee Trustee"), for the benefit of the Holders from time to time of
the Capital Securities (as defined herein) of FBS Capital I, a Delaware
statutory business trust (the "Trust").

     WHEREAS, pursuant to an Amended and Restated Trust Agreement, dated as of
November 26, 1996 (the "Trust Agreement") among the Guarantor, as Depositor, the
Property Trustee and the Delaware Trustee named therein and the Holders from
time to time of undivided beneficial interests in the assets of the Trust, the
Trust issued $300,000,000 aggregate Liquidation Amount (as defined in the Trust
Agreement) of its 8.09% Capital Securities, Liquidation Amount $1,000 per
Capital Security (the "Old Capital Securities") representing preferred undivided
beneficial interests in the assets of the Trust and having the terms set forth
in the Trust Agreement;

     WHEREAS, the Old Capital Securities issued by the Trust and the proceeds
thereof, together with the proceeds from the issuance of the Trust's Common
Securities (as defined below), was used to purchase the Debentures (as defined
in the Trust Agreement) of the Guarantor which was deposited with Wilmington
Trust Company, as Property Trustee under the Trust Agreement, as trust assets;

     WHEREAS, as an incentive for the Holders to purchase the Old Capital
Securities, the Guarantor irrevocably and unconditionally agreed, to the extent
set forth in that certain Guarantee Agreement dated as of November 26, 1996
among the Guarantor and the Guarantee Trustee, for the benefit of the Holders of
the Old Capital Securities (the "Old Guarantee"), to pay to the Holders of the
Old Capital Securities the Guarantee Payments (as defined therein) and to make
certain other payments on the terms and conditions set forth therein;

     WHEREAS, pursuant to that certain Exchange and Registration Rights
Agreement, dated as of November 26, 1996 among the Guarantor, the Trust and
certain Purchasers named therein (the "Guarantee Exchange and Registration
Rights Agreement"), the Guarantor and the Trust agreed that if the Guarantor and
the Trust file a registration statement (the "Registration Statement") to
exchange the Old Capital Securities for a like amount of new capital securities
(the "New Capital Securities" together with the Old Capital Securities, the
"Capital Securities"), then the Guarantor and the Trust will simultaneously
include in the Registration Statement an offer to exchange the Old Guarantee for
the Guarantee (as defined herein) for the benefit of the Holders of the Capital
Securities;

     WHEREAS, on ___________________________ the Guarantor and the Trust filed
the Registration Statement;

     WHEREAS, pursuant to the Guarantee Exchange and Registration Rights
Agreement, the Guarantor and the Trust wish to exchange the Old Guarantee for
the Guarantee;
 
     WHEREAS, the Guarantee will be substantially identical to the Old Guarantee
except that the Guarantee will be registered pursuant to an effective
registration statement under the Securities Act of 1933, as amended (the
"Securities Act"), and the Guarantee will not contain provisions restricting
transfer in the absence of registration under the Securities Act; and

     WHEREAS, as an incentive for the Holders to retain the Capital Securities,
the Guarantor desires irrevocably and unconditionally to agree, to the extent
set forth herein, to pay to the Holders of the Capital Securities the Guarantee
Payments (as defined herein) and to make certain other payments on the terms and
conditions set forth herein.

<PAGE>
 
     NOW, THEREFORE, in consideration of the subsequent purchase or retention by
each Holder of Capital Securities, which purchase or retention the Guarantor
hereby agrees shall benefit the Guarantor, the Guarantor executes and delivers
this Guarantee Agreement and pursuant to Section 5.1 hereof extends the
Guarantee for the benefit of the Holders from time to time of the Capital
Securities.

                            ARTICLE 1.  DEFINITIONS

     SECTION 1.1.  Definitions.

     As used in this Guarantee Agreement, the terms set forth below shall,
unless the context otherwise requires, have the following meanings. Capitalized
or otherwise defined terms used but not otherwise defined herein shall have the
meanings assigned to such terms in the Trust Agreement and the Indenture (as
defined herein), each as in effect on the date hereof.

     "Affiliate" of any specified Person means any other Person directly or
indirectly controlling or controlled by or under direct or indirect common
control with such specified Person; provided, however, that an Affiliate of the
Guarantor shall not be deemed to be an Affiliate of the Trust. For the purposes
of this definition, "control" when used with respect to any specified Person
means the power to direct the management and policies of such Person, directly
or indirectly, whether through the ownership of voting securities, by contract
or otherwise; and the terms "controlling" and "controlled" have meanings
correlative to the foregoing.

     "Board of Directors" means either the board of directors of the Guarantor
or any committee of that board duly authorized to act hereunder.

     "Common Securities" means the securities representing common undivided
beneficial interests in the assets of the Trust.

     "Event of Default" means a default by the Guarantor on any of its payment
or other obligations under this Guarantee Agreement; provided, however, that,
except with respect to a default in payment of any Guarantee Payments, the
Guarantor shall have received notice of default and shall not have cured such
default within 60 days after receipt of such notice.

     "Guarantee"  has the meaning set forth in Section 5.1.

     "Guarantee Payments" means the following payments or distributions, without
duplication, with respect to the Capital Securities, to the extent not paid or
made by or on behalf of the Trust: (i) any accrued and unpaid Distributions (as
defined in the Trust Agreement) required to be paid on the Capital Securities,
to the extent the Trust shall have funds on hand available therefor at such
time, (ii) the applicable Redemption Price (as defined in the Trust Agreement),
to the extent the Trust shall have funds on hand available therefor at such
time, and (iii) upon a voluntary or involuntary termination, winding up or
liquidation of the Trust, unless Debentures are distributed to the Holders, the
lesser of (a) the aggregate of the Liquidation Distribution (as defined in the
Trust Agreement) and (b) the amount of assets of the Trust remaining available
for distribution to Holders of Capital Securities.

     "Guarantee Trustee" means Wilmington Trust Company, until a Successor
Guarantee Trustee has been appointed and has accepted such appointment pursuant
to the terms of this Guarantee Agreement, and thereafter means each such
Successor Guarantee Trustee.

                                      -2-
<PAGE>
 

     "Holder" means any holder, as registered on the books and records of the
Trust, of any Capital Securities; provided, however, that in determining whether
the holders of the requisite percentage of Capital Securities have given any
request, notice, consent or waiver hereunder, "Holder" shall not include the
Guarantor, the Guarantee Trustee, or any Affiliate of the Guarantor or the
Guarantee Trustee.

     "Indenture" means the Junior Subordinated Indenture dated as of November
15, 1996, as supplemented and amended between the Guarantor and Wilmington Trust
Company, as trustee.

     "List of Holders" has the meaning specified in Section 2.2(a).

     "Majority in Liquidation Amount of the Capital Securities" means, except as
provided by the Trust Indenture Act, a vote by the Holder(s), voting separately
as a class, of more than 50% of the Liquidation Amount of all then outstanding
Capital Securities issued by the Trust.

     "Officers' Certificate" means, with respect to any Person, a certificate
signed by the Chairman or a Vice Chairman of the Board of Directors of such
Person or the President or a Vice President of such Person, and by the
Treasurer, an Assistant Treasurer, the Secretary or an Assistant Secretary of
such Person, and delivered to the Guarantee Trustee. Any Officers' Certificate
delivered with respect to compliance with a condition or covenant provided for
in this Guarantee Agreement shall include:

     (a) a statement that each officer signing the Officers' Certificate has
read the covenant or condition and the definitions relating thereto;

     (b) a brief statement of the nature and scope of the examination or
investigation undertaken by each officer in rendering the Officers' Certificate;

     (c) a statement that each officer has made such examination or
investigation as, in such officer's opinion, is necessary to enable such officer
to express an informed opinion as to whether or not such covenant or condition
has been complied with; and

     (d) a statement as to whether, in the opinion of each officer, such
condition or covenant has been complied with.

     "Other Guarantees" means any guarantees similar to the Guarantee issued,
from time to time, by the Guarantor on behalf of holders of one or more series
of capital securities issued by one or more FBS Trusts (as defined in the
Indenture) other than the Trust.

     "Person" means a legal person, including any individual, corporation,
estate, partnership, joint venture, association, joint stock company, limited
liability company, trust, unincorporated association, or government or any
agency or political subdivision thereof, or any other entity of whatever nature.

     "Responsible Officer" means, with respect to the Guarantee Trustee, any
officer of the Corporate Trust Department of the Guarantee Trustee and also
means, with respect to a particular corporate trust matter, any other officer to
whom such matter is referred because of that officer's knowledge of and
familiarity with the particular subject.

     "Securities Act" means the Securities Act of 1933, as amended.

     "Successor Guarantee Trustee" means a successor Guarantee Trustee
possessing the qualifications to act as Guarantee Trustee under Section 4.1.

                                      -3-
<PAGE>
 

     "Trust Indenture Act" means the Trust Indenture Act of 1939, as amended.

                        ARTICLE II. TRUST INDENTURE ACT

     SECTION 2.1. Trust Indenture Act; Application.

     (a) This Guarantee Agreement is subject to the provisions of the Trust
Indenture Act that are required to be part of this Guarantee Agreement and
shall, to the extent applicable, be governed by such provisions.

     (b) If and to the extent that any provision of this Guarantee Agreement
limits, qualifies or conflicts with the duties imposed by Sections 310 to 317,
inclusive, of the Trust Indenture Act, such imposed duties shall control.

     SECTION 2.2. List of Holders.

     (a) The Guarantor shall furnish or cause to be furnished to the Guarantee
Trustee (a) semiannually, on or before January 15 and July 15 of each year, a
list, in such form as the Guarantee Trustee may reasonably require, of the names
and addresses of the Holders ("List of Holders") as of a date not more than 15
days prior to the delivery thereof, and (b) at such other times as the Guarantee
Trustee may request in writing, within 30 days after the receipt by the
Guarantor of any such request, a List of Holders as of a date not more than 15
days prior to the time such list is furnished, in each case to the extent such
information is in the possession or control of the Guarantor and is not
identical to a previously supplied list of Holders or has not otherwise been
received by the Guarantee Trustee in its capacity as such. The Guarantee Trustee
may destroy any List of Holders previously given to it on receipt of a new List
of Holders.

     (b) The Guarantee Trustee shall comply with its obligations under Section
311(a), Section 311(b) and Section 312(b) of the Trust Indenture Act.

     SECTION 2.3. Reports by the Guarantee Trustee.

     Not later than July 15 of each year, commencing July 15, 1997, the
Guarantee Trustee shall provide to the Holders such reports as are required by
Section 313 of the Trust Indenture Act, if any, in the form and in the manner
provided by Section 313 of the Trust Indenture Act. The Guarantee Trustee shall
also comply with the requirements of Section 313(d) of the Trust Indenture Act.

     SECTION 2.4. Periodic Reports to the Guarantee Trustee.

     The Guarantor shall provide to the Guarantee Trustee, the Securities and
Exchange Commission and the Holders such documents, reports and information, if
any, as required by Section 314 of the Trust Indenture Act and the compliance
certificate required by Section 314 of the Trust Indenture Act, in the form, in
the manner and at the times required by Section 314 of the Trust Indenture Act.

     SECTION 2.5. Evidence of Compliance with Conditions Precedent.

     The Guarantor shall provide to the Guarantee Trustee such evidence of
compliance with such conditions precedent, if any, provided for in this
Guarantee Agreement that relate to any of the matters set forth in Section
314(c) of the Trust Indenture Act. Any certificate or opinion required to be
given by an officer pursuant to Section 314(c)(1) may be given in the form of an
Officers' Certificate.

                                      -4-
<PAGE>
 

     SECTION 2.6. Events of Default; Waiver.

     The Holders of a Majority in Liquidation Amount of the Capital Securities
may, by vote, on behalf of the Holders, waive any past Event of Default and its
consequences. Upon such waiver, any such Event of Default shall cease to exist,
and any Event of Default arising therefrom shall be deemed to have been cured,
for every purpose of this Guarantee Agreement, but no such waiver shall extend
to any subsequent or other default or Event of Default or impair any right
consequent therefrom.

     SECTION 2.7. Event of Default; Notice.

     (a) The Guarantee Trustee shall, within 90 days after the occurrence of an
Event of Default, transmit by mail, first class postage prepaid, to the Holders,
notices of all Events of Default known to the Guarantee Trustee, unless such
defaults have been cured before the giving of such notice, provided, that,
except in the case of a default in the payment of a Guarantee Payment, the
Guarantee Trustee shall be protected in withholding such notice if and so long
as the Board of Directors, the executive committee or a trust committee of
directors and/or Responsible Officers of the Guarantee Trustee in good faith
determines that the withholding of such notice is in the interests of the
Holders.

     (b) The Guarantee Trustee shall not be deemed to have knowledge of any
Event of Default unless the Guarantee Trustee shall have received written
notice, or a Responsible Officer charged with the administration of this
Guarantee Agreement shall have obtained written notice, of such Event of
Default.

     SECTION 2.8. Conflicting Interests.

     The Trust Agreement shall be deemed to be specifically described in this
Guarantee Agreement for the purposes of clause (i) of the first proviso
contained in Section 310(b) of the Trust Indenture Act.

        ARTICLE III. POWERS, DUTIES AND RIGHTS OF THE GUARANTEE TRUSTEE

     SECTION 3.1. Powers and Duties of the Guarantee Trustee.

     (a) This Guarantee shall be held by the Guarantee Trustee for the benefit
of the Holders, and the Guarantee Trustee shall not transfer this Guarantee to
any Person except to a Holder exercising his or her rights pursuant to Section
5.4(iv) or to a Successor Guarantee Trustee on acceptance by such Successor
Guarantee Trustee of its appointment to act as Successor Guarantee Trustee. The
right, title and interest of the Guarantee Trustee shall automatically vest in
any Successor Guarantee Trustee, upon acceptance by such Successor Guarantee
Trustee of its appointment hereunder, and such vesting and cessation of title
shall be effective whether or not conveyancing documents have been executed and
delivered pursuant to the appointment of such Successor Guarantee Trustee.

     (b) If an Event of Default has occurred and is continuing, the Guarantee
Trustee shall enforce this Guarantee for the benefit of the Holders.

     (c) The Guarantee Trustee, before the occurrence of any Event of Default
and after the curing of all Events of Default that may have occurred, shall
undertake to perform only such duties as are specifically set forth in this
Guarantee Agreement, and no implied covenants shall be read into this Guarantee
Agreement against the Guarantee Trustee. In case an Event of Default has
occurred (that has not been cured or waived pursuant to Section 2.6), the
Guarantee Trustee shall exercise such of the rights and powers vested in it by
this Guarantee Agreement, and use the same degree of care and skill in its

                                      -5-
<PAGE>
 

exercise thereof, as a prudent person would exercise or use under the
circumstances in the conduct of his or her own affairs.

     (d) No provision of this Guarantee Agreement shall be construed to relieve
the Guarantee Trustee from liability for its own negligent action, its own
negligent failure to act or its own willful misconduct, except that:

          (i) prior to the occurrence of any Event of Default and after the
     curing or waiving of all such Events of Default that may have occurred:

               (A) the duties and obligations of the Guarantee Trustee shall be
          determined solely by the express provisions of this Guarantee
          Agreement, and the Guarantee Trustee shall not be liable except for
          the performance of such duties and obligations as are specifically set
          forth in this Guarantee Agreement; and

               (B) in the absence of bad faith on the part of the Guarantee
          Trustee, the Guarantee Trustee may conclusively rely, as to the truth
          of the statements and the correctness of the opinions expressed
          therein, upon any certificates or opinions furnished to the Guarantee
          Trustee and conforming to the requirements of this Guarantee
          Agreement; but in the case of any such certificates or opinions that
          by any provision hereof or of the Trust Indenture Act are specifically
          required to be furnished to the Guarantee Trustee, the Guarantee
          Trustee shall be under a duty to examine the same to determine whether
          or not they conform to the requirements of this Guarantee Agreement;

          (ii) the Guarantee Trustee shall not be liable for any error of
     judgment made in good faith by a Responsible Officer of the Guarantee
     Trustee, unless it shall be proved that the Guarantee Trustee was negligent
     in ascertaining the pertinent facts upon which such judgment was made;

          (iii) the Guarantee Trustee shall not be liable with respect to any
     action taken or omitted to be taken by it in good faith in accordance with
     the direction of the Holders of not less than a Majority in Liquidation
     Amount of the Capital Securities relating to the time, method and place of
     conducting any proceeding for any remedy available to the Guarantee
     Trustee, or exercising any trust or power conferred upon the Guarantee
     Trustee under this Guarantee Agreement; and

          (iv) no provision of this Guarantee Agreement shall require the
     Guarantee Trustee to expend or risk its own funds or otherwise incur
     personal financial liability in the performance of any of its duties or in
     the exercise of any of its rights or powers, if the Guarantee Trustee shall
     have reasonable grounds for believing that the repayment of such funds or
     liability is not reasonably assured to it under the terms of this Guarantee
     Agreement or adequate indemnity against such risk or liability is not
     reasonably assured to it.

     SECTION 3.2. Certain Rights of Guarantee Trustee.

     (a) Subject to the provisions of Section 3.1:

          (i) The Guarantee Trustee may rely and shall be fully protected in
     acting or refraining from acting upon any resolution, certificate,
     statement, instrument, opinion, report, notice, request, direction,
     consent, order, bond, debenture, note, other evidence of indebtedness or

                                      -6-
<PAGE>
 

     other paper or document reasonably believed by it to be genuine and to have
     been signed, sent or presented by the proper party or parties.

          (ii) Any direction or act of the Guarantor contemplated by this
     Guarantee Agreement shall be sufficiently evidenced by an Officers'
     Certificate unless otherwise prescribed herein.

          (iii) Whenever, in the administration of this Guarantee Agreement, the
     Guarantee Trustee shall deem it desirable that a matter be proved or
     established before taking, suffering or omitting to take any action
     hereunder, the Guarantee Trustee (unless other evidence is herein
     specifically prescribed) may, in the absence of bad faith on its part,
     request and rely upon an Officers' Certificate which, upon receipt of such
     request from the Guarantee Trustee, shall be promptly delivered by the
     Guarantor.

          (iv) The Guarantee Trustee may consult with legal counsel, and the
     written advice or opinion of such legal counsel with respect to legal
     matters shall be full and complete authorization and protection in respect
     of any action taken, suffered or omitted to be taken by it hereunder in
     good faith and in accordance with such advice or opinion. Such legal
     counsel may be legal counsel to the Guarantor or any of its Affiliates and
     may be one of its employees. The Guarantee Trustee shall have the right at
     any time to seek instructions concerning the administration of this
     Guarantee Agreement from any court of competent jurisdiction.

          (v) The Guarantee Trustee shall be under no obligation to exercise any
     of the rights or powers vested in it by this Guarantee Agreement at the
     request or direction of any Holder, unless such Holder shall have provided
     to the Guarantee Trustee such adequate security and indemnity as would
     satisfy a reasonable person in the position of the Guarantee Trustee,
     against the costs, expenses (including attorneys' fees and expenses) and
     liabilities that might be incurred by it in complying with such request or
     direction, including such reasonable advances as may be requested by the
     Guarantee Trustee; provided that, nothing contained in this Section
     3.2(a)(v) shall be taken to relieve the Guarantee Trustee, upon the
     occurrence of an Event of Default, of its obligation to exercise the rights
     and powers vested in it by this Guarantee Agreement.

          (vi) The Guarantee Trustee shall not be bound to make any
     investigation into the facts or matters stated in any resolution,
     certificate, statement, instrument, opinion, report, notice, request,
     direction, consent, order, bond, debenture, note, other evidence of
     indebtedness or other paper or document, but the Guarantee Trustee, in its
     discretion, may make such further inquiry or investigation into such facts
     or matters as it may see fit.

          (vii) The Guarantee Trustee may execute any of the trusts or powers
     hereunder or perform any duties hereunder either directly or by or through
     its agents or attorneys, and the Guarantee Trustee shall not be responsible
     for any misconduct or negligence on the part of any such agent or attorney
     appointed with due care by it hereunder.

          (viii) Whenever in the administration of this Guarantee Agreement the
     Guarantee Trustee shall deem it desirable to receive instructions with
     respect to enforcing any remedy or right or taking any other action
     hereunder, the Guarantee Trustee (A) may request instructions from the
     Holders, (B) may refrain from enforcing such remedy or right or taking such
     other action until such instructions are received, and (C) shall be
     protected in acting in accordance with such instructions.

                                      -7-
<PAGE>
 

     (b) No provision of this Guarantee Agreement shall be deemed to impose any
duty or obligation on the Guarantee Trustee to perform any act or acts or
exercise any right, power, duty or obligation conferred or imposed on it in any
jurisdiction in which it shall be illegal, or in which the Guarantee Trustee
shall be unqualified or incompetent in accordance with applicable law, to
perform any such act or acts or to exercise any such right, power, duty or
obligation. No permissive power or authority available to the Guarantee Trustee
shall be construed to be a duty to act in accordance with such power and
authority.

     SECTION 3.3. Indemnity.

     The Guarantor agrees to indemnify the Guarantee Trustee for, and to hold it
harmless against, any loss, liability or expense incurred without negligence or
bad faith on the part of the Guarantee Trustee, arising out of or in connection
with the acceptance or administration of this Guarantee Agreement, including the
costs and expenses of defending itself against any claim or liability in
connection with the exercise or performance of any of its powers or duties
hereunder.

                         ARTICLE IV. GUARANTEE TRUSTEE

     SECTION 4.1. Guarantee Trustee: Eligibility.

     (a) There shall at all times be a Guarantee Trustee which shall:

          (i) not be an Affiliate of the Guarantor; and

          (ii) be a Person that is eligible pursuant to the Trust Indenture Act
     to act as such and has a combined capital and surplus of at least
     $50,000,000, and shall be a corporation meeting the requirements of Section
     310(a) of the Trust Indenture Act. If such corporation publishes reports of
     condition at least annually, pursuant to law or to the requirements of the
     supervising or examining authority, then, for the purposes of this Section
     4.1(a)(ii) and to the extent permitted by the Trust Indenture Act, the
     combined capital and surplus of such corporation shall be deemed to be its
     combined capital and surplus as set forth in its most recent report of
     condition so published.

     (b) If at any time the Guarantee Trustee shall cease to be eligible to so
act under Section 4.1(a), the Guarantee Trustee shall immediately resign in the
manner and with the effect set out in Section 4.2(c).

     (c) If the Guarantee Trustee has or shall acquire any "conflicting
interest" within the meaning of Section 310(b) of the Trust Indenture Act, the
Guarantee Trustee and Guarantor shall in all respects comply with the provisions
of Section 310(b) of the Trust Indenture Act.

     SECTION 4.2. Appointment, Removal and Resignation of the Guarantee Trustee.

     (a) Subject to Section 4.2(b), the Guarantee Trustee may be appointed or
removed without cause at any time by the Guarantor.

     (b) The Guarantee Trustee shall not be removed until a Successor Guarantee
Trustee has been appointed and has accepted such appointment by written
instrument executed by such Successor Guarantee Trustee and delivered to the
Guarantor.

                                      -8-
<PAGE>
 

     (c) The Guarantee Trustee appointed hereunder shall hold office until a
Successor Guarantee Trustee shall have been appointed or until its removal or
resignation. The Guarantee Trustee may resign from office (without need for
prior or subsequent accounting) by an instrument in writing executed by the
Guarantee Trustee and delivered to the Guarantor, which resignation shall not
take effect until a Successor Guarantee Trustee has been appointed and has
accepted such appointment by instrument in writing executed by such Successor
Guarantee Trustee and delivered to the Guarantor and the resigning Guarantee
Trustee.

     (d) If no Successor Guarantee Trustee shall have been appointed and
accepted appointment as provided in this Section 4.2 within 60 days after
delivery to the Guarantor of an instrument of resignation, the resigning
Guarantee Trustee may petition, at the expense of the Guarantor, any court of
competent jurisdiction for appointment of a Successor Guarantee Trustee. Such
court may thereupon, after prescribing such notice, if any, as it may deem
proper, appoint a Successor Guarantee Trustee.

                             ARTICLE V. GUARANTEE

     SECTION 5.1. Guarantee.

     The Guarantor irrevocably and unconditionally agrees to pay in full to the
Holders the Guarantee Payments (without duplication of amounts theretofore paid
by or on behalf of the Trust), as and when due, regardless of any defense, right
of set-off or counterclaim which the Trust may have or assert other than the
defense of payment (the "Guarantee"). The Guarantor's obligation to make a
Guarantee Payment may be satisfied by direct payment of the required amounts by
the Guarantor to the Holders or by causing the Trust to pay such amounts to the
Holders.

     SECTION 5.2. Waiver of Notice and Demand.

     The Guarantor hereby waives notice of acceptance of the Guarantee and of
any liability to which it applies or may apply, presentment, demand for payment,
any right to require a proceeding first against the Guarantee Trustee, Trust or
any other Person before proceeding against the Guarantor, protest, notice of
nonpayment, notice of dishonor, notice of redemption and all other notices and
demands.

     SECTION 5.3. Obligations Not Affected.

     The obligations, covenants, agreements and duties of the Guarantor under
this Guarantee Agreement shall in no way be affected or impaired by reason of
the happening from time to time of any of the following:

     (a) the release or waiver, by operation of law or otherwise, of the
performance or observance by the Trust of any express or implied agreement,
covenant, term or condition relating to the Capital Securities to be performed
or observed by the Trust;

     (b) the extension of time for the payment by the Trust of all or any
portion of the Distributions (other than an extension of time for payment of
Distributions that results from the extension of any interest payment period on
the Debentures as provided in the Indenture), Redemption Price, Liquidation
Distribution or any other sums payable under the terms of the Capital Securities
or the extension of time for the performance of any other obligation under,
arising out of, or in connection with, the Capital Securities;

                                      -9-
<PAGE>
 

     (c) any failure, omission, delay or lack of diligence on the part of the
Holders to enforce, assert or exercise any right, privilege, power or remedy
conferred on the Holders pursuant to the terms of the Capital Securities, or any
action on the part of the Trust granting indulgence or extension of any kind;

     (d) the voluntary or involuntary liquidation, dissolution, sale of any
collateral, receivership, insolvency, bankruptcy, assignment for the benefit of
creditors, reorganization, arrangement, composition or readjustment of debt of,
or other similar proceedings affecting, the Trust or any of the assets of the
Trust;

     (e) any invalidity of, or defect or deficiency in, the Capital Securities;

     (f) the settlement or compromise of any obligation guaranteed hereby or
hereby incurred; or

     (g) any other circumstance whatsoever that might otherwise constitute a
legal or equitable discharge or defense of a guarantor, it being the intent of
this Section 5.3 that the obligations of the Guarantor hereunder shall be
absolute and unconditional under any and all circumstances.

There shall be no obligation of the Holders to give notice to, or obtain the
consent of, the Guarantor with respect to the happening of any of the foregoing.

     SECTION 5.4. Rights of Holders.

     The Guarantor expressly acknowledges that: (i) this Guarantee will be
deposited with the Guarantee Trustee to be held for the benefit of the Holders;
(ii) the Guarantee Trustee has the right to enforce this Guarantee on behalf of
the Holders; (iii) the Holders of a Majority in Liquidation Amount of the
Capital Securities have the right to direct the time, method and place of
conducting any proceeding for any remedy available to the Guarantee Trustee in
respect of this Guarantee Agreement or exercising any trust or power conferred
upon the Guarantee Trustee under this Guarantee Agreement; and (iv) any Holder
may institute a legal proceeding directly against the Guarantor to enforce its
rights under this Guarantee Agreement, without first instituting a legal
proceeding against the Guarantee Trustee, the Trust or any other Person.

     SECTION 5.5. Guarantee of Payment.

     This Guarantee creates a guarantee of payment and not of collection. This
Guarantee will not be discharged except by payment of the Guarantee Payments in
full (without duplication of amounts theretofore paid by the Trust) or upon
distribution of Debentures to Holders as provided in the Trust Agreement.

     SECTION 5.6. Subrogation.

     The Guarantor shall be subrogated to all (if any) rights of the Holders
against the Trust in respect of any amounts paid to the Holders by the Guarantor
under this Guarantee Agreement and shall have the right to waive payment by the
Trust pursuant to Section 5.1; provided, however, that the Guarantor shall not
(except to the extent required by mandatory provisions of law) be entitled to
enforce or exercise any rights which it may acquire by way of subrogation or any
indemnity, reimbursement or other agreement, in all cases as a result of payment
under this Guarantee, if, at the time of any such payment, any amounts are due
and unpaid under this Guarantee. If any amount shall be paid to the Guarantor in
violation of the preceding sentence, the Guarantor agrees to hold such amount in
trust for the Holders and to pay over such amount to the Holders.

                                     -10-
<PAGE>
 
     SECTION 5.7.  Independent Obligations.

     The Guarantor acknowledges that its obligations hereunder are independent
of the obligations of the Trust with respect to the Capital Securities and that
the Guarantor shall be liable as principal and as debtor hereunder to make
Guarantee Payments pursuant to the terms of this Guarantee Agreement
notwithstanding the occurrence of any event referred to in subsections (a)
through (g), inclusive, of Section 5.3 hereof.

                   ARTICLE VI.  COVENANTS AND SUBORDINATION

     SECTION 6.1.  Subordination.

     The obligations of the Guarantor under this Guarantee will constitute
unsecured obligations of the Guarantor and will rank subordinate and junior in
right of payment to all Senior and Subordinated Debt (as defined in the
Indenture) in the same manner as Debentures (as defined in the Trust Agreement).

     SECTION 6.2.  Pari Passu Guarantees.

     The obligations of the Guarantor under this Guarantee shall rank pari passu
with the obligations of the Guarantor under all Other Guarantees.

     ARTICLE VII.  CONSOLIDATION, MERGER, CONVEYANCE, TRANSFER OR LEASE

     SECTION 7.1.  Guarantor May Consolidate, Etc., Only on Certain Terms.

     The Guarantor shall not consolidate with or merge into any other Person or
convey, transfer or lease its properties and assets substantially as an entirety
to any Person, and no Person shall consolidate with or merge into the Guarantor
or convey, transfer or lease its properties and assets substantially as an
entirety to the Guarantor, unless:

     (1)  in case the Guarantor shall consolidate with or merge into another
Person or convey, transfer or lease its properties and assets substantially as
an entirety to any Person, the Person formed by such consolidation or into which
the Guarantor is merged or the Person which acquires by conveyance or transfer,
or which leases, the properties and assets of the Guarantor substantially as an
entirety shall be a corporation, partnership or trust organized and existing
under the laws of the United States of America or any State or the District of
Columbia, and shall expressly assume the Guarantor's obligations under this
Guarantee;

     (2)  immediately after giving effect thereto, no Event of Default, and no
event which, after notice or lapse of time, or both, would become an Event of
Default, shall have happened and be continuing;

     (3)  such consolidation, merger, conveyance, transfer or lease is permitted
under the Trust Agreement and the Indenture and does not give rise to any breach
or violation of the Trust Agreement or the Indenture; and

     (4)  the Guarantor has delivered to the Guarantee Trustee an Officers'
Certificate and an Opinion of Counsel, each stating that such consolidation,
merger, conveyance, transfer or lease and assumption of the Guarantor's
obligations under this Guarantee Agreement comply with this Article and that all
conditions precedent herein provided for relating to such transaction have been
complied

                                     -11-
<PAGE>
 
with; and the Guarantee Trustee, subject to Section 3.1 hereof, may rely upon
such Officers' Certificate and Opinion of Counsel as conclusive evidence that
such transaction complies with this Section 7.1.

     SECTION 7.2.  Successor Guarantor Substituted.

     Upon any consolidation or merger by the Guarantor with or into any other
Person, or any conveyance, transfer or lease by the Guarantor of its properties
and assets substantially as an entirety to any Person in accordance with Section
7.1, the successor Person formed by such consolidation or into which the
Guarantor is merged or to which such conveyance, transfer or lease is made shall
succeed to, and be substituted for, and may exercise every right and power of,
the Guarantor under this Guarantee Agreement with the same effect as if such
successor Person had been named as the Guarantor herein; and in the event of any
such conveyance, transfer or lease the Guarantor shall be discharged from all
obligations and covenants under this Guarantee Agreement.


                          ARTICLE VIII.  TERMINATION

     SECTION 8.1.  Termination.

     This Guarantee Agreement shall terminate and be of no further force and
effect upon the earliest of (i) full payment of the applicable Redemption Price
of all Capital Securities, (ii) the distribution of Debentures to the Holders in
exchange for all of the Capital Securities or (iii) full payment of the amounts
payable in accordance with the Trust Agreement upon liquidation of the Trust.
Notwithstanding the foregoing clauses (i) through (iii), this Guarantee
Agreement will continue to be effective or will be reinstated if it has been
terminated pursuant to one of such clauses (i) through (iii), as the case may
be, if at any time any Holder must restore payment of any sums paid with respect
to Capital Securities or this Guarantee Agreement.

                          ARTICLE IX.   MISCELLANEOUS

     SECTION 9.1.  Successors and Assigns.

     All guarantees and agreements contained in this Guarantee Agreement shall
bind the successors, assigns, receivers, trustees and representatives of the
Guarantor and shall inure to the benefit of the Holders of the Capital
Securities then outstanding. Except in connection with a consolidation, merger
or sale involving the Guarantor that is permitted under Article VII hereof and
Article VIII of the Indenture, the Guarantor shall not assign its obligations
hereunder.

     SECTION 9.2.  Amendments.

     Except with respect to any changes which do not adversely affect the rights
of the Holders in any material respect (in which case no vote will be required),
this Guarantee Agreement may not be amended without the prior approval of the
Holders of not less than a Majority in Liquidation Amount of the Capital
Securities. The provisions of Article VI of the Trust Agreement concerning
meetings of the Holders shall apply to the giving of such approval.

     SECTION 9.3.  Notices.

     Any notice, request or other communication required or permitted to be
given hereunder shall be in writing, duly signed by the party giving such
notice, and delivered, telecopied or mailed by first class mail as follows:

                                     -12-
<PAGE>
 
     (a) if given to the Guarantor, to the address set forth below or such other
address, facsimile number or to the attention of such other Person as the
Guarantor may give notice to the Holders:

          First Bank System, Inc.
          601 Second Avenue South
          Minneapolis, Minnesota 55402

          Facsimile No.:  (612) 973-0965
          Attention:  Treasurer

     (b) if given to the Trust, in care of the Guarantee Trustee, at the Trust's
(and the Guarantee Trustee's) address set forth below or such other address as
the Guarantee Trustee on behalf of the Trust may give notice to the Holders:

          FBS Capital I
          c/o First Bank System, Inc.
          601 Second Avenue South
          Minneapolis, Minnesota 55402

          Facsimile No.:  (612) 973-0965
          Attention:  Treasurer

          with a copy to:

          Wilmington Trust Company
          1100 North Market
          Wilmington, Delaware  19890

          Facsimile No.: (302) 651-1000
          Attention:  Corporate Trust Administration

     (c) if given to any Holder, at the address set forth on the books and
records of the Trust.

     All notices hereunder shall be deemed to have been given when received in
person, telecopied with receipt confirmed, or mailed by first class mail,
postage prepaid, except that if a notice or other document is refused delivery
or cannot be delivered because of a changed address of which no notice was
given, such notice or other document shall be deemed to have been delivered on
the date of such refusal or inability to deliver.

     SECTION 9.4.  Benefit.

     This Guarantee is solely for the benefit of the Holders and is not
separately transferable from the Capital Securities, except that it shall be
exchanged, if at all, for an Exchange Guarantee in an exchange registered under
the Securities Act pursuant to the provisions of the Guarantee Exchange and
Registration Rights Agreement.

     SECTION 9.5.  Interpretation.

     In this Guarantee Agreement, unless the context otherwise requires:

                                     -13-
<PAGE>
 
     (a) capitalized terms used in this Guarantee Agreement but not defined in
the preamble hereto have the respective meanings assigned to them in Section
1.1;

     (b) a term defined anywhere in this Guarantee Agreement has the same
meaning throughout;

     (c) all references to "the Guarantee Agreement" or "this Guarantee
Agreement" are to this Guarantee Agreement as modified, supplemented or amended
from time to time;

     (d) all references in this Guarantee Agreement to Articles and Sections are
to Articles and Sections of this Guarantee Agreement unless otherwise specified;

     (e) a term defined in the Trust Indenture Act has the same meaning when
used in this Guarantee Agreement unless otherwise defined in this Guarantee
Agreement or unless the context otherwise requires;

     (f) a reference to the singular includes the plural and vice versa; and

     (g) the masculine, feminine or neuter genders used herein shall include the
masculine, feminine and neuter genders.

     SECTION 9.6.  Governing Law.

     THIS GUARANTEE AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED AND INTERPRETED
IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK WITHOUT REGARD TO THE
CONFLICT OF LAW PRINCIPLES THEREOF.

                                     -14-
<PAGE>
 
     This instrument may be executed in any number of counterparts, each of
which so executed shall be deemed to be an original, but all such counterparts
shall together constitute but one and the same instrument.

     THIS GUARANTEE AGREEMENT is executed as of the day and year first above
written.

                                    FIRST BANK SYSTEM, INC.

                                    By: ____________________________
                                    Name:
                                    Title:


                                    WILMINGTON TRUST COMPANY
                                    as Guarantee Trustee

                                    By: ____________________________
                                    Name:
                                    Title:

                                     -15-

<PAGE>
 
                                                                    EXHIBIT 4.11

                  EXCHANGE AND REGISTRATION RIGHTS AGREEMENT

EXCHANGE AND REGISTRATION RIGHTS AGREEMENT, dated November 26, 1996, by and
among FBS Capital I, a Delaware business trust (the "Trust"), First Bank System,
Inc., a Delaware corporation registered as a bank holding company under the Bank
Holding Company Act of 1956, as amended ("FBS") and Goldman, Sachs & Co., Morgan
Stanley & Co. Incorporated, Lehman Brothers Inc., Merrill Lynch, Pierce, Fenner
& Smith Incorporated, Dain Bosworth Incorporated and Piper Jaffray Inc.
(collectively, the "Purchasers") of the 8.09% Capital Securities of the Trust.

     1. Certain Definitions.  For purposes of this Exchange and Registration
Rights Agreement, the following terms shall have the following respective
meanings:

     (a) "Commission" means the Securities and Exchange Commission, or any other
federal agency at the time administering the Exchange Act or the Securities Act,
whichever is the relevant statute for the particular purpose.

     (b) "Debenture Exchange and Registration Rights Agreement" means the
Exchange and Registration Rights Agreement in respect of the Debentures dated
November 26, 1996 among FBS, the Trust and the Purchasers.

     (c) "Debentures" means the 8.09% Junior Subordinated Deferrable Interest
Debentures due November 15, 2026 of FBS, to be issued pursuant to the Indenture.

     (d) "Effective Time", in the case of (i) an Exchange Offer, means the date
on which the Commission declares the Exchange Offer registration statement
effective or on which such registration statement otherwise becomes effective
and (ii) a Shelf Registration, means the date on which the Commission declares
the Shelf Registration effective or on which the Shelf Registration otherwise
becomes effective.

     (e) "Exchange Act" means the Securities Exchange Act of 1934, or any
successor thereto, as amended from time to time.

     (f) "Exchange Debentures" has the meaning set forth in Section 2(a) hereof.

     (g) "Exchange Guarantee" has the meaning set forth in Section 2(a) hereof.

     (h) "Exchange Offer" has the meaning set forth in Section 2(a) hereof.

     (i) "Exchange Registration" has the meaning set forth in Section 3(c)
hereof.

     (j) "Exchange Securities" has the meaning set forth in Section 2(a) hereof.

     (k) "Guarantee" means the Guarantee of FBS with respect to the Securities,
to the extent set forth in the Guarantee Agreement.

<PAGE>
 
     (l) "Guarantee Agreement" means the Guarantee Agreement dated November 26,
1996 between FBS and Property Trustee, for the benefit of the holders of the
Securities.

     (m) "Guarantee Exchange and Registration Rights Agreement" means the
Exchange and Registration Rights Agreement in respect of the Guarantee dated
November 26, 1996 among FBS, the Trust and the Purchasers.

     (n) The term "holder" means each of the Purchasers for so long as it owns
any Registrable Securities, and its respective successors and assigns who
acquire Registrable Securities from time to time, directly or indirectly, from
such person or from any successor or assign of such person, in each case for so
long as such person owns any Registrable Securities.

     (o) "Indenture" means the Indenture dated as of November 15, 1996, between
FBS and Wilmington Trust Company, as Debenture Trustee, as supplemented by an
officer's certificate dated November 26, 1996, and as further amended or
supplemented from time to time.

     (p) "Issue Date" means November 26, 1996.

     (q) "Liquidation Amount" means the stated liquidation preference of the
Securities.

     (r) "New Guarantee Agreement" has the meaning set forth in the Guarantee
Exchange and Registration Rights Agreement.

     (s) The term "person" means a corporation, association, partnership,
organization, business, individual, government or political subdivision thereof
or governmental agency.

     (t) "Purchase Agreement" means the Purchase Agreement dated November 19,
1996, among FBS, the Trust and the Purchasers.

     (u) "Registrable Securities" means the Securities; provided, however, that
such Securities shall cease to be Registrable Securities when

          (i)  the Exchange Offer is conducted as contemplated in Section 2(a);
     provided that, prior to the consummation of the Exchange Offer, existing
     Commission interpretations have not been changed such that the Exchange
     Securities received by holders in the Exchange Offer for Registrable
     Securities are not or would not be, upon receipt, transferable by each such
     holder (other than a Restricted Holder) without restriction under the
     Securities Act in the circumstances contemplated by Section 2(a); and
     provided further, that any Exchange Security received by a broker-dealer in
     an Exchange Offer exchange for a Registrable Security that was not acquired
     by the broker-dealer directly from the Trust will also be a Registrable
     Security through and including the earlier of the 90th day after the
     Exchange Offer is completed or such time as such broker-dealer no longer
     owns such Security; and provided further, however, that any such Securities
     that, pursuant to the last two sentences of Section 2(a) hereof, are
     included in a

                                       2
<PAGE>
 
     prospectus for use in connection with resales by broker-dealers shall be
     deemed to be Registrable Securities with respect to Sections 5, 6 and 9
     until resale of such Exchange Securities has been effected within the 90-
     day period referred to in Section 2(a) hereof;

          (ii) in the circumstances contemplated by Section 2(b), a registration
     statement registering such Securities (and, in the circumstances
     contemplated by Section 2(b), other than a registration statement filed in
     addition to the Exchange Offer, also registering the underlying Debentures
     and the related Guarantee) under the Securities Act has been declared or
     becomes effective and such Securities have been sold or otherwise
     transferred by the holder thereof pursuant to such effective registration
     statement;

          (iii) such Securities are sold pursuant to Rule 144 (or any successor
     provision) promulgated under the Securities Act under circumstances in
     which any legend borne by such Securities relating to restrictions on
     transferability thereof, under the Securities Act, is removed by the Trust
     or pursuant to the Trust Agreement or such Securities are eligible to be
     sold pursuant to paragraph (k) of Rule 144; or

          (iv) such Securities shall cease to be outstanding.

     (v) "Registration Default" has the meaning set forth in Section 2(c)
hereof.

     (w) "Registration Expenses" has the meaning set forth in Section 4 hereof.

     (x) "Restricted Holder" means (i) a holder that is an affiliate of the
Trust or of FBS within the meaning of Rule 405 under the Securities Act, (ii) a
holder who acquires Exchange Securities outside the ordinary course of such
holder's business, (iii) a holder who has arrangements or understandings with
any person to participate in the Exchange Offer for the purpose of distributing
Exchange Securities or (iv) a broker-dealer who receives Securities for its own
account but did not acquire the Securities as a result of market-making
activities or other trading activities.

     (y) "Resale Period" has the meaning set forth in Section 2(a) hereof.

     (z) "Securities" means, collectively, the $300,000,000 8.09% Capital
Securities, Liquidation Amount $1,000 per Capital Security, of the Trust to be
issued and sold to the Purchasers, and any securities issued in exchange
therefor or in lieu thereof pursuant to the Trust Agreement.

     (aa) "Securities Act" means the Securities Act of 1933, or any successor
thereto, as the same shall be amended from time to time.

     (bb) "Shelf Registration" has the meaning set forth in Section 2(b) hereof.

     (cc) "Special Distributions" has the meaning set forth in Section 2(c)
hereof.

                                       3
<PAGE>
 
     (dd) "Special Interest" has the meaning set forth in Section 2(c) hereof.

     (ee) "Trust Agreement" means the Amended and Restated Trust Agreement dated
as of November 26, 1996 among FBS, as Depositor, Wilmington Trust Company, as
Property Trustee and Delaware Trustee and Administrative Agents named therein.

     (ff) "Trust Indenture Act" means the Trust Indenture Act of 1939, or any
successor thereto, and the rules, regulations and forms promulgated thereunder,
all as amended from time to time.

     Unless the context otherwise requires, any reference herein to a "Section"
or "clause" refers to a Section or clause, as the case may be, of this Exchange
and Registration Rights Agreement, and the words "herein," "hereof" and
"hereunder" and other words of similar import refer to this Exchange and
Registration Rights Agreement as a whole and not to any particular Section or
other subdivision

     2. Registration Under the Securities Act.

     (a) Except as set forth in Section 2(b) below, FBS and the Trust agree,
jointly and severally, to use their reasonable best efforts to file under the
Securities Act, as soon as practicable, but no later than 150 days after the
Issue Date, a registration statement relating to an offer to exchange (the
"Exchange Offer") any and all of the Securities for a like aggregate Liquidation
Amount of capital securities of the Trust which are substantially identical to
the Securities (and which are entitled to the benefits of the Trust Agreement
which will be qualified under the Trust Indenture Act) except that they have
been registered pursuant to an effective registration statement under the
Securities Act and such new capital securities will not contain provisions for
Special Distributions or provisions restricting transfer in the absence of
registration under the Securities Act (such new capital securities hereinafter
called "Exchange Securities") for any or all of the Registrable Securities. Such
registration statement shall also relate to, and the consummation of the
Exchange Offer shall be conditioned upon the consummation of, an offer to
exchange the Debentures for substantially identical debentures of FBS pursuant
to the Debenture Exchange and Registration Rights Agreement (the "Exchange
Debentures") and to an offer to exchange the Guarantee for a substantially
identical guarantee of FBS pursuant to the Guarantee Exchange and Registration
Rights Agreement (the "Exchange Guarantee"). FBS and the Trust agree, jointly
and severally, to use their reasonable best efforts to cause such registration
statement to become effective under the Securities Act as soon as practicable
thereafter. The Exchange Offer will be registered under the Act on the
appropriate form and will comply in all material respects with all applicable
tender offer rules and regulations under the Exchange Act. FBS and the Trust
further agree, jointly and severally, to commence the Exchange Offer promptly
after such registration statement has become effective, hold the Exchange Offer
open for at least 30 days and the Trust agrees to issue Exchange Securities for
all Registrable Securities that have been tendered and not withdrawn on or prior
to the expiration of the Exchange Offer. The Exchange Offer will be deemed to
have been completed only if the Exchange Securities received by holders other
than Restricted Holders

                                       4
<PAGE>
 
in the Exchange Offer for Registrable Securities are, upon receipt, transferable
by each such holder without restriction under the Securities Act and the
Exchange Act, it being understood that broker-dealers receiving Securities will
be subject to certain prospectus delivery requirements with respect to resale of
the Securities. The Exchange Offer shall be deemed to have been completed upon
the earlier to occur of (i) the Trust having exchanged the Exchange Securities
for all outstanding Registrable Securities pursuant to the Exchange Offer and
(ii) the Trust having exchanged, pursuant to the Exchange Offer, Exchange
Securities for all Registrable Securities that have been tendered and not
withdrawn before the expiration of the Exchange Offer, which shall be on a date
that is at least 30 days following the commencement of the Exchange Offer. FBS
and the Trust agree, jointly and severally, (x) to include in the registration
statement a prospectus for use in connection with any resales of Exchange
Securities by a broker-dealer, other than resales of Exchange Securities
received by a broker-dealer pursuant to the Exchange Offer in exchange for
Registrable Securities acquired by the broker-dealer directly from the Trust,
and (y) to the extent any broker-dealer participates in the Exchange Offer and
notifies FBS or causes FBS to be notified in writing that it is a participating
broker-dealer, to use their reasonable efforts to keep such registration
statement effective for a period (the "Resale Period") beginning when Exchange
Securities are first issued in the Exchange Offer and ending upon the earlier of
the expiration of the 90th day after the Exchange Offer has been completed or
such shorter period if all Exchange Securities received by such broker-dealer in
exchange for Registrable Securities acquired for their own account as a result
of market-making or other trading activities have been disposed of by such
broker-dealer; and no broker-dealers shall be authorized by FBS to, and shall
not, deliver such Prospectus after such period in connection with resales
contemplated by this Section 2(a) or otherwise; it being understood that,
notwithstanding anything in this Exchange and Registration Rights Agreement to
the contrary, FBS shall not be required to comply with any provision of this
Section 2(a) or any other provision of this Exchange and Registration Rights
Agreement relating to the distribution of Exchange Securities by broker-dealers,
to the extent that FBS reasonably concludes that compliance with such provision
is no longer required by applicable law or interpretation of the Staff of the
SEC. With respect to such registration statement, each broker-dealer that holds
Exchange Securities received in an Exchange Offer in exchange for Registrable
Securities not acquired by it directly from the Trust shall have the benefit of
the rights of indemnification and contribution set forth in Section 6 hereof.

     (b) If (i) on or prior to the consummation of the Exchange Offer existing
Commission interpretations are changed such that the Exchange Securities
received by holders other than Restricted Holders in the Exchange Offer for
Registrable Securities are not or would not be, upon receipt, transferable by
each such holder without restriction under the Securities Act, (ii) the Exchange
Offer has not been consummated within 210 days following the Issue Date or (iii)
the Purchasers so request (but only with respect to the Securities) within 60
days after the consummation of the Exchange Offer with respect to any Securities
held by them which are not freely transferable following consummation of the
Exchange Offer, in lieu of (or, in the case of clause (iii), in addition to)
conducting the Exchange Offer contemplated by Section 2(a) FBS and the Trust
shall file under the Securities Act, as soon as practicable, a "shelf"
registration statement providing for the registration of, and the sale on a
continuous or delayed basis by the holders of, all of the Registrable Securities
(or, in the case of clause (iii), of the Securities held by the Purchasers

                                       5
<PAGE>
 
for resale by the Purchasers), pursuant to Rule 415 under the Securities Act
and/or any similar rule that may be adopted by the Commission (the "Shelf
Registration"). Unless the Shelf Registration has been filed in addition to
conducting the Exchange Offer contemplated by Section 2(a), the Shelf
Registration shall also provide for the registration of the Debentures pursuant
to the Debenture Exchange and Registration Rights Agreement and for the
registration of the Guarantee pursuant to the Guarantee Exchange and
Registration Rights Agreement. FBS and the Trust agree, jointly and severally,
to use their reasonable best efforts to cause the Shelf Registration to become
or be declared effective and to keep such Shelf Registration continuously
effective for a period ending on the earlier of (A) the third anniversary of the
Issue Date (or, in the case of clause (iii), the first anniversary) or (B) the
later of (i) such time as there are no longer any Registrable Securities
outstanding or (ii) as required under the Debenture Exchange and Registration
Rights Agreement. FBS and the Trust further agree, jointly and severally, to
supplement or make amendments to the Shelf Registration, as and when required by
the rules, regulations or instructions applicable to the registration form used
by FBS and the Trust for such Shelf Registration or by the Securities Act or
rules and regulations thereunder for shelf registration, and FBS and the Trust
agree, jointly and severally, to furnish to the holders of the Registrable
Securities copies of any such supplement or amendment prior to its being used
and/or filed with the Commission.

     (c) In the event that (i) FBS and the Trust have not filed the registration
statement relating to the Exchange Offer (or, if applicable, the Shelf
Registration) on or before the 150th day after the Issue Date, or (ii) such
registration statement (or, if applicable, the Shelf Registration) has not
become effective or been declared effective by the Commission on or before the
180th day after the Issue Date, or (iii) any of the Exchange Offer, the exchange
offer contemplated by the Guarantee Exchange and Registration Rights Agreement
and the exchange offer contemplated by the Debenture Exchange and Registration
Rights Agreement has not been completed within 210 days after the Issue Date (if
the Exchange Offer is then required to be made) or (iv) any registration
statement required by Section 2(a) or 2(b) is filed and declared effective but
shall thereafter cease to be effective (except as specifically permitted herein)
without being succeeded immediately by an additional registration statement
filed and declared effective (each such event referred to in clauses (i) through
(iv), a "Registration Default"), then interest will accrue (in addition to the
stated interest rate on the Debentures) at the rate of 0.25% per annum on the
principal amount of the Debentures, and the distributions will accrue (in
addition to the stated distribution rate on the Securities) at the rate of 0.25%
per annum on the Liquidation Amount of the Securities, for the period from the
occurrence of the Registration Default until such time as no Registration
Default is in effect. Such additional interest (the "Special Interest") and such
additional distributions (the "Special Distributions") will be payable in cash
semi-annually in arrears on each May 15 and November 15 in accordance with, and
subject to the deferral provisions of, the Indenture and the Trust Agreement,
respectively. Special Interest, if any, and Special Distributions, if any, will
be computed on the basis of a 365 or 366 day year, as the case may be, and the
number of days actually elapsed.

     (d) Any reference herein to a registration statement shall be deemed to
include any document incorporated therein by reference as of the applicable
Effective Time and any reference herein to any post effective amendment to a
registration statement shall be deemed

                                       6
<PAGE>
 
to include any document incorporated therein by reference as of a time after
such Effective Time.

     3. Registration Procedures.

     If FBS and the Trust file a registration statement pursuant to Section 2(a)
or Section 2(b), the following provisions shall apply:

     (a) At or before the Effective Time of the Exchange Offer or the Shelf
Registration, as the case may be, FBS shall qualify the Indenture, the New
Guarantee Agreement and the Trust Agreement under the Trust Indenture Act.

     (b) In the event that such qualification would require the appointment of a
new trustee under any of the Indenture, the New Guarantee Agreement or the Trust
Agreement, such new trustee shall be appointed thereunder pursuant to the
applicable provisions thereof.

     (c) In connection with the joint and several obligations of FBS and the
Trust with respect to the registration of the Exchange Securities, the Exchange
Guarantee and the Exchange Debentures, as contemplated by Section 2(a) (the
"Exchange Registration"), if applicable, FBS and the Trust shall, as soon as
reasonably possible (or as otherwise specified):

               (i)   prepare and file with the Commission, as soon as
         practicable but no later than 150 days after the Issue Date, a
         registration statement with respect to the Exchange Registration on any
         form which may be utilized by FBS and the Trust and which shall permit
         the Exchange Offer and resales of Exchange Securities by broker-dealers
         during the Resale Period to be effected as contemplated by Section 2(a)
         hereof, and use its reasonable best efforts to cause such registration
         statement to become effective as soon as practicable thereafter;

               (ii)  as soon as practicable prepare and file with the Commission
         such amendments and supplements to such registration statement and the
         prospectus included therein as may be necessary to effect and maintain
         the effectiveness of such registration statement for the periods and
         purposes contemplated in Section 2(a) hereof and as may be required by
         the applicable rules and regulations of the Commission and the
         instructions applicable to the form of such registration statement, and
         promptly provide each broker-dealer holding Exchange Securities with
         such number of copies of the prospectus included therein (as then
         amended or supplemented), in conformity in all material respects with
         the requirements of the Securities Act and the Trust Indenture Act and
         the rules and regulations of the Commission promulgated thereunder, as
         such broker-dealer reasonably may request prior to the expiration of
         the Resale Period, for use in connection with resales of Exchange
         Securities;

                                       7
<PAGE>
 
               (iii) promptly notify each broker-dealer that has requested or
         received copies of the prospectus included in such registration
         statement, and confirm such advice in writing, (A) when such
         registration statement or the prospectus included therein or any
         prospectus amendment or supplement or post effective amendment has been
         filed, and, with respect to such registration statement or any post
         effective amendment, when the same has become effective, (B) of the
         receipt of any comments by the Commission and by the Blue Sky or
         securities commissioner or regulator of any state with respect thereto
         or any request by the Commission for amendments or supplements to such
         registration statement or prospectus or for additional information, (C)
         of the issuance by the Commission of any stop order suspending the
         effectiveness of such registration statement or the initiation or
         threatening of any proceedings for that purpose, (D) if at any time the
         joint and several representations and warranties of FBS and the Trust
         contemplated by Section 5 cease to be true and correct in all material
         respects, (E) of the receipt by either FBS or the Trust of any
         notification with respect to the suspension of the qualification of the
         Exchange Securities and the Exchange Guarantee for sale in any United
         States jurisdiction or the initiation or threatening of any proceeding
         for such purpose, or (F) at any time during the Resale Period when a
         prospectus is required to be delivered under the Securities Act, that
         such registration statement, prospectus, prospectus amendment or
         supplement or post effective amendment does not conform in all material
         respects to the applicable requirements of the Securities Act and the
         Trust Indenture Act and the rules and regulations of the Commission
         promulgated thereunder or contains an untrue statement of a material
         fact or omits to state a material fact required to be stated therein or
         necessary to make the statements therein not misleading in light of the
         circumstances then existing;

               (iv)  in the event that FBS and the Trust would be required,
         pursuant to Section 3(c)(iii)(F) above, to notify any broker-dealers
         holding Exchange Securities, without delay prepare and furnish to each
         such holder a reasonable number of copies of a prospectus supplemented
         or amended so that, as thereafter delivered to purchasers of such
         Exchange Securities during the Resale Period, such prospectus shall
         conform in all material respects to the applicable requirements of the
         Securities Act and the Trust Indenture Act and the rules and
         regulations of the Commission promulgated thereunder and shall not
         contain an untrue statement of a material fact or omit to state a
         material fact required to be stated therein or necessary to make the
         statements therein not misleading in light of the circumstances then
         existing;

               (v)   use their best efforts to obtain the withdrawal of any
         order suspending the effectiveness of such registration statement or
         any post effective amendment thereto at the earliest practicable date;

                                       8
<PAGE>
 
               (vi)  use their reasonable best efforts to (A) register or
         qualify the Exchange Securities and the Exchange Guarantee under the
         securities laws or blue sky laws of such jurisdiction as are
         contemplated by Section 2(a) no later than the commencement of the
         Exchange Offer, (B) keep such registrations or qualifications in effect
         and comply with such laws so as to permit the continuance of offers,
         sales and dealings therein in such jurisdictions until the expiration
         of the Resale Period and (C) take any and all other actions as may be
         reasonably necessary or advisable to enable each broker-dealer holding
         Exchange Securities to consummate the disposition thereof in such
         jurisdictions; provided, however, that neither FBS nor the Trust shall
         be required for any such purpose to (1) qualify to do business in any
         jurisdiction wherein it would not otherwise be required to qualify but
         for the requirements of this Section 3(g)(vi), (2) consent to general
         service of process in any such jurisdiction or (3) in the case of FBS,
         make any changes to its charter or by-laws or any agreement between it
         and its stockholders or in the case of the Trust, make any changes to
         the Trust Agreement;

               (vii) use their reasonable best efforts to obtain the consent or
         approval of each United States governmental agency or authority,
         whether federal, state or local, which may be required to effect the
         Exchange Registration, the Exchange Offer and the offering and sale of
         Exchange Securities by broker-dealers during the Resale Period;

               (viii) provide a CUSIP number for all Exchange Securities, not
         later than the applicable Effective Time; and

               (ix)   comply with all applicable rules and regulations of the
         Commission, and make generally available to all holders of Securities
         as soon as practicable but no later than eighteen months after the
         Effective Time, an earnings statement of FBS and its subsidiaries
         complying with Section 11 (a) of the Securities Act (including, at the
         option of FBS, Rule 158 thereunder).

     (d) In connection with the joint and several obligations of FBS and the
Trust with respect to the Shelf Registration, if applicable, FBS and the Trust
shall use their reasonable best efforts to cause the Shelf Registration to
become effective to permit the sale of the Registrable Securities by the holders
thereof in accordance with the intended method or methods of distribution
thereof described in the Shelf Registration. In connection therewith, FBS and
the Trust shall as soon as reasonably possible (or as otherwise specified):

               (i) prepare and file with the Commission, as soon as practicable,
         a registration statement with respect to the Shelf Registration on any
         form which may be utilized by FBS and the Trust and which shall permit
         the disposition of the Registrable Securities in accordance with the
         intended method or methods thereof, as specified in writing to FBS and
         the Trust by the holders of the Registrable Securities and use their
         reasonable

                                       9
<PAGE>
 
         best efforts to cause such registration statement to become effective
         as soon as practicable thereafter;

               (ii) as soon as practicable, prepare and file with the Commission
         such amendments and supplements to such registration statement and the
         prospectus included therein as may be necessary to effect and maintain
         the effectiveness of such registration statement for the period
         specified in Section 2(b) hereof and as may be required by the
         applicable rules and regulations of the Commission and the instructions
         applicable to the form of such registration statement and furnish to
         the holders of the Registrable Securities copies of any such supplement
         or amendment simultaneously with or prior to its being used or filed
         with the Commission;

               (iii) comply with the provisions of the Securities Act applicable
         to FBS or the Trust in connection with the disposition of all of the
         Registrable Securities covered by such registration statement in
         accordance with the intended methods of disposition by the holders
         thereof, set forth in such registration statement;

               (iv)  provide (A) the holders of the Registrable Securities to be
         included in such registration statement and not more than one counsel
         for all the holders of such Registrable Securities, (B) the
         underwriters (which term, for purposes of this Exchange and
         Registration Rights Agreement, shall include a person deemed to be an
         underwriter within the meaning of Section 2(11) of the Securities Act),
         if any, thereof, (C) the sales or placement agent, if any, therefor and
         (D) one counsel for such underwriters or agents, if any, reasonable
         opportunity to participate in the preparation of such registration
         statement, each prospectus included therein or filed with the
         Commission, and each amendment or supplement thereto;

               (v)   for a reasonable period prior to the filing of such
         registration statement, and throughout the period specified in Section
         2(b), make available at reasonable times at FBS's principal place of
         business or such other reasonable place for inspection by the persons
         referred to in Section 3(d)(iv) who shall certify to FBS and the Trust
         that they have a current intention to sell the Registrable Securities
         pursuant to the Shelf Registration such financial and other information
         and books and records of FBS and the Trust, and cause the officers,
         employees, counsel and independent certified public accountants of FBS
         and the Trust to respond to such inquiries, as shall be reasonably
         necessary, in the judgment of the respective counsel referred to in
         such Section, to conduct a reasonable investigation within the meaning
         of Section 11 of the Securities Act; provided, however, that each such
         party shall be required to maintain in confidence and not to disclose
         to any other person any information or records reasonably designated by
         FBS as being confidential, until such time as (A) such information
         becomes a matter of public record (whether by virtue of its inclusion
         in such registration statement or otherwise, except by disclosure by
         such party in

                                      10
<PAGE>
 
               breach of this Agreement), or (B) such person shall be required
               so to disclose such information pursuant to the subpoena or order
               of any court or other governmental agency or body having
               jurisdiction over the matter (subject to, and only to the extent
               required by, the requirements of such order, and only after such
               person shall have given FBS prompt prior written notice of such
               requirement);

                         (vi)   promptly notify the selling holders of
               Registrable Securities, the sales or placement agent, if any,
               therefor and the managing underwriter or underwriters, if any,
               thereof and confirm such advice in writing, (A) when such
               registration statement or the prospectus included therein or any
               prospectus amendment or supplement or post-effective amendment
               has been filed, and, with respect to such registration statement
               or any post-effective amendment, when the same has become
               effective, (B) of any comments by the Commission and by the Blue
               Sky or securities commissioner or regulator of any state with
               respect thereto or any request by the Commission for amendments
               or supplements to such registration statement or prospectus or
               for additional information, (C) of the issuance by the Commission
               of any stop order suspending the effectiveness of such
               registration statement or the initiation or threatening of any
               proceedings for that purpose, (D) if at any time the joint and
               several representations and warranties of FBS and the Trust
               contemplated by Section 3(d)(xv) or Section 5 cease to be true
               and correct in all material respects, (E) of the receipt by
               either FBS or the Trust of any notification with respect to the
               suspension of the qualification of the Registrable Securities and
               the Guarantee for sale in any jurisdiction or the initiation or
               threatening of any proceeding for such purpose, or (F) at any
               time when a prospectus is required to be delivered under the
               Securities Act, that such registration statement, prospectus,
               prospectus amendment or supplement or post-effective amendment,
               or any document incorporated by reference in any of the
               foregoing, does not conform in all material respects to the
               applicable requirements of the Securities Act and the Trust
               Indenture Act and the rules and regulations of the Commission
               promulgated thereunder or contains an untrue statement of a
               material fact or omits to state any material fact required to be
               stated therein or necessary to make the statements therein not
               misleading in light of the circumstances then existing;

                         (vii)  use their best efforts to obtain the withdrawal
               of any order suspending the effectiveness of such registration
               statement or any post-effective amendment thereto at the earliest
               practicable date;

                         (viii) if requested by any managing underwriter or
               underwriters, any placement or sales agent or any holder or
               counsel for the holders of Registrable Securities, promptly
               incorporate in a prospectus supplement or post-effective
               amendment such information as is required by the applicable rules
               and regulations of the Commission and as such managing
               underwriter or underwriters, such agent or such holder specifies
               should be included

                                       11
<PAGE>
 
               therein relating to the terms of the sale of such Registrable
               Securities, including, without limitation, information with
               respect to the Liquidation Amount of Registrable Securities being
               sold by any holder or agent or to any underwriters, the name and
               description of such holder, agent or underwriter, the offering
               price of such Registrable Securities and any discount, commission
               or other compensation payable in respect thereof, the purchase
               price being paid therefor by such underwriters and with respect
               to any other terms of the offering of the Registrable Securities,
               to be sold by such holder or agent or to such underwriters; and
               make all required filings of such prospectus supplement or post-
               effective amendment promptly after notification of the matters to
               be incorporated in such prospectus supplement or post-effective
               amendment;

                         (ix)   furnish to each holder of Registrable
               Securities, each placement or sales agent, if any, therefor, each
               underwriter, if any, thereof and the respective counsel referred
               to in Section 3(d)(iv) an executed copy of such registration
               statement, each such amendment and supplement thereto (in each
               case including all exhibits thereto and documents incorporated by
               reference therein) and such number of copies of such registration
               statement (excluding exhibits thereto and documents incorporated
               by reference therein unless specifically so requested by such
               holder, agent or underwriter, as the case may be) and of the
               prospectus included in such registration statement (including
               each preliminary prospectus and any summary prospectus), in
               conformity with the requirements of the Securities Act and the
               Trust Indenture Act and the rules and regulations of the
               Commission promulgated thereunder, and such other documents, as
               such holder, agent, if any, and underwriter, if any, may
               reasonably request in order to facilitate the offering and
               disposition of the Registrable Securities owned by such holder,
               offered or sold by such agent or underwritten by such underwriter
               and to permit such holder, agent and underwriter to satisfy the
               prospectus delivery requirements of the Securities Act; and each
               of FBS and the Trust hereby consents to the use of such
               prospectus (including such preliminary and summary prospectus)
               and any amendment or supplement thereto by each such holder and
               by any such agent and underwriter, in each case in the form most
               recently provided to such party by FBS and the Trust, in
               connection with the offering and sale of the Registrable
               Securities covered by the prospectus (including such preliminary
               and summary prospectus) or any supplement or amendment thereto;

                         (x)    use their reasonable best efforts to (A)
               register or qualify the Registrable Securities to be included in
               such registration statement and the Guarantee under such
               securities laws or blue sky laws of such jurisdictions as any
               holder of such Registrable Securities and each placement or sales
               agent, if any, therefor and underwriter, if any, thereof shall
               reasonably request, (B) keep such registrations or qualifications
               in effect and comply with such laws so as to permit the
               continuance of offers, sales and dealings

                                       12
<PAGE>
 
               therein in such jurisdictions during the period the Shelf
               Registration is required to remain effective under Section 2(b)
               above and for so long as may be necessary to enable any such
               holder, agent or underwriter to complete its distribution of
               Securities pursuant to such registration statement and (C) take
               any and all other actions as may be reasonably necessary or
               advisable to enable each such holder, agent, if any, and
               underwriter, if any, to consummate the disposition in such
               jurisdictions of Registrable Securities; provided, however, that
               neither FBS nor the Trust shall be required for any such purpose
               to (1) qualify to do business in any jurisdiction wherein it
               would not otherwise be required to qualify but for the
               requirements of this Section 3(d)(x), (2) consent to general
               service of process in any such jurisdiction, (3) in the case of
               FBS, make any changes to its charter or by-laws or any agreement
               between it and its shareholders or in the case of the Trust, make
               any changes to the Trust Agreement;

                         (xi)   use their reasonable best efforts to obtain the
               consent or approval of each governmental agency or authority,
               whether federal, state or local, which may be required to effect
               the Shelf Registration or the offering or sale in connection
               therewith or to enable the selling holder or holders to offer, or
               to consummate the disposition of, their Registrable Securities;

                         (xii)  cooperate with the holders of the Registrable
               Securities and the managing underwriters, if any, to facilitate
               the timely preparation and delivery of certificates representing
               Registrable Securities to be sold, which certificates shall be
               printed, lithographed or engraved, or produced by any combination
               of such methods, and which shall not bear any restrictive
               legends; and, in the case of an underwritten offering, enable
               such Registrable Securities to be in such denominations and
               registered in such names as the managing underwriters may request
               at least two business days prior to any sale of the Registrable
               Securities;

                         (xiii) provide a CUSIP number for all Registrable
               Securities, not later than the applicable Effective Time;

                         (xiv)  enter into not more than one underwriting
               agreement, engagement letter, agency agreement, "best efforts"
               underwriting agreement or similar agreement, as appropriate,
               including (without limitation) provisions relating to
               indemnification and contribution substantially the same as those
               set forth in Section 6 hereof, and take such other actions in
               connection therewith as any holders of Registrable Securities
               aggregating at least 25% in aggregate Liquidation Amount of the
               Registrable Securities at the time outstanding shall reasonably
               request in order to expedite or facilitate the disposition of
               such Registrable Securities; provided, that FBS and the Trust
               shall not be required to (i) enter into any such agreement more
               than once with respect to all of the Registrable Securities and
               may delay entering into such agreement until the consummation of
               any underwritten

                                       13
<PAGE>
 
               public offering which FBS and the Trust shall have then
               undertaken or (ii) enter into any engagement letter, agency
               agreement, "best effort" underwriting agreement or similar
               agreement whatsoever with respect to the Registrable Securities,
               and provided, further that FBS and the Trust shall not be
               obligated to enter into any such agreement with a broker-dealer
               which results in the need for a "qualified independent
               underwriter" (within the meaning of the Rules of Fair Practice
               and the By-Laws of the National Association of Securities
               Dealers, Inc. ("NASD") or any successor thereto, as amended from
               time to time (the "Rules and By-Laws of NASD"));

                         (xv)   whether or not an agreement of the type referred
               to in Section (3)(d)(xiv) hereof is entered into and whether or
               not any portion of the offering contemplated by such registration
               statement is an underwritten offering or is made through a
               placement or sales agent or any other entity, (A) make such
               representations and warranties to the holders of such Registrable
               Securities and the placement or sales agent, if any, therefor and
               the underwriters, if any, thereof substantially the same as those
               set forth in Section V of the Purchase Agreement and such other
               representations and warranties as are customarily made with
               respect to the offering of debt securities pursuant to any
               appropriate agreement or to a registration statement on the
               applicable form under the Securities Act; (B) obtain an opinion
               or opinions of counsel to FBS and the Trust substantially the
               same as the opinions provided for in Section IV of the Purchase
               Agreement with such additions, substitutions or deletions of such
               matters as are customarily covered in opinions for an
               underwritten offering, addressed to such holder or holders and
               the placement or sales agent, if any, therefor and the
               underwriters, if any, thereof and dated the effective date of
               such registration statement (and if such registration statement
               contemplates an underwritten offering of a part or all of the
               Registrable Securities, dated the date of the closing under the
               underwriting agreement relating thereto) (it being agreed that
               the matters to be covered by such opinion shall also include,
               without limitation, the absence of governmental approvals
               required to be obtained in connection with the Shelf
               Registration, the offering and sale of the Registrable
               Securities, this Exchange and Registration Rights Agreement or
               any agreement of the type referred to in Section (3)(c)(xiv)
               hereof, except such approvals as may be required under state
               securities or blue sky laws; and the compliance as to form of
               such registration statement and any documents incorporated by
               reference therein and of the Indenture, the Guarantee Agreement
               and the Trust Agreement with the requirements of the Securities
               Act and the Trust Indenture Act and the rules and regulations of
               the Commission promulgated thereunder, respectively); and, such
               opinion shall also state that such counsel has no reason to
               believe that, as of the date of the opinion and of the
               registration statement or most recent post-effective amendment
               thereto, as the case may be, such registration statement and the
               prospectus included therein, as then amended or supplemented, and
               the documents incorporated by reference therein (in each case
               other than the financial statements and other financial
               information

                                       14
<PAGE>
 
               contained therein) contains or contained an untrue statement of a
               material fact or omits or omitted to state therein a material
               fact necessary to make the statements therein not misleading (in
               the case of such documents, in the light of the circumstances
               existing at the time that such documents were filed with the
               Commission under the Exchange Act)); (C) obtain a "cold comfort"
               letter or letters from the independent certified public
               accountants of FBS and the Trust addressed to the selling holders
               of Registrable Securities, the placement or sales agent, if any,
               therefor and the underwriters, if any, thereof, dated (i) the
               effective date of such registration statement and (ii) the
               effective date of any prospectus supplement to the prospectus
               included in such registration statement or post-effective
               amendment to such registration statement substantially in the
               form of Exhibit F to the Purchase Agreement; (D) deliver such
               other documents and certificates, including officers'
               certificates, as may be reasonably requested by any holders of at
               least 25 % in aggregate Liquidation Amount of the Registrable
               Securities at the time outstanding or the placement or sales
               agent, if any, therefor and the managing underwriters, if any,
               thereof to evidence the accuracy of the representations and
               warranties made pursuant to clause (A) above or those contained
               in Section 5(a) hereof and the compliance with or satisfaction of
               any agreements or conditions contained in the underwriting
               agreement or other agreement entered into by FBS and the Trust;
               and (E) undertake such obligations relating to expense
               reimbursement, indemnification and contribution as are provided
               in Section 6 hereof;

                         (xvi)  notify in writing each holder of Registrable
               Securities of any proposal by FBS and the Trust to amend or waive
               any provision of this Exchange and Registration Rights Agreement
               pursuant to Section 9(h) hereof and of any amendment or waiver
               effected pursuant thereto, each of which notices shall contain
               the text of the amendment or waiver proposed or effected, as the
               case may be;

                         (xvii) in the event that any broker-dealer registered
               under the Exchange Act shall underwrite any Registrable
               Securities or participate as a member of an underwriting
               syndicate or selling group or "assist in the distribution"
               (within the meaning of the Rules and By-Laws of NASD) thereof,
               whether as a holder of such Registrable Securities or as an
               underwriter, a placement or sales agent or a broker or dealer in
               respect thereof, or otherwise, assist such broker-dealer in
               complying with the requirements of such Rules and By-Laws,
               including, without limitation, by (A) if such Rules or By-Laws,
               including Schedule E thereto (or any successor thereto), shall so
               require, engaging a "qualified independent underwriter" (as
               defined in such Schedule (or any successor thereto)) to
               participate in the preparation of the registration statement
               relating to such Registrable Securities, to exercise usual
               standards of due diligence in respect thereto and, if any portion
               of the offering contemplated by such registration statement is an
               underwritten offering or is made through a

                                       15
<PAGE>
 
               placement or sales agent, to recommend the yield of such
               Registrable Securities, (B) indemnifying any such qualified
               independent underwriter to the extent of the indemnification of
               underwriters provided in Section 6 hereof (or to such other
               customary extent as may be required by such underwriter), and (C)
               providing such information to such broker-dealer as may be
               required in order for such broker-dealer to comply with the
               requirements of the Rules and By-Laws of NASD; and

                         (xviii)  comply with all applicable rules and
               regulations of the Commission, and make generally available to
               its holders of the Securities as soon as practicable but in any
               event not later than eighteen months after the effective date of
               such registration statement, an earnings statement of FBS and its
               subsidiaries complying with Section 11(a) of the Securities Act
               (including, at the option of FBS, Rule 158 thereunder).

     (e) In the event that FBS and the Trust would be required, pursuant to
Section 3(d)(vi)(F) above, to notify the selling holders of Registrable
Securities, the placement or sales agent, if any, therefor and the managing
underwriters, if any, thereof, FBS and the Trust shall without delay prepare and
furnish to each such holder, to each placement or sales agent, if any, and to
each underwriter, if any, a reasonable number of copies of a prospectus
supplemented or amended so that, as thereafter delivered to purchasers of
Registrable Securities, such prospectus shall conform in all material respects
to the applicable requirements of the Securities Act and the Trust Indenture Act
and the rules and regulations of the Commission promulgated thereunder and shall
not contain an untrue statement of a material fact or omit to state a material
fact required to be stated therein or necessary to make the statements therein
not misleading in light of the circumstances then existing. Each holder of
Registrable Securities agrees that upon receipt of any notice from FBS and the
Trust pursuant to Section 3(d)(vi)(F) hereof, such holder shall forthwith
discontinue the disposition of Registrable Securities, pursuant to the
registration statement applicable to such Registrable Securities until such
holder shall have received copies of such amended or supplemented prospectus,
and if so directed by FBS and the Trust, such holder shall deliver to FBS (at
FBS's expense) all copies, other than permanent file copies, then in such
holder's possession of the prospectus covering such Registrable Securities at
the time of receipt of such notice.

     (f) FBS and the Trust may require each holder of Registrable Securities as
to which any registration is being effected to furnish in writing to FBS and the
Trust such information regarding such holder and such holder's intended method
of distribution of such Registrable Securities as FBS and the Trust may from
time to time reasonably request in writing, but only to the extent that such
information is required in order to comply with the Securities Act. Each such
holder agrees to notify FBS and the Trust as promptly as practicable of any
inaccuracy or change in information previously furnished by such holder to FBS
and the Trust or of the occurrence of any event in either case as a result of
which any prospectus relating to such registration contains or would contain an
untrue statement of a material fact regarding such holder or such holder's
intended method of distribution of such Registrable Securities or omits to state
any material fact regarding such holder or such holder's intended method of
distribution of such Registrable Securities required to be stated therein or

                                       16
<PAGE>
 
necessary to make the statements therein not misleading in light of the
circumstances then existing, and promptly to furnish to FBS and the Trust any
additional information required to correct and update any previously furnished
information or required so that such prospectus shall not contain, with respect
to such holder or the distribution of such Registrable Securities, an untrue
statement of a material fact or omit to state a material fact required to be
stated therein or necessary to make the statements therein not misleading in
light of the circumstances then existing. Each such holder shall comply with the
provisions of the Securities Act applicable to such holder with respect to the
disposition by such holder of Registrable Securities covered by such
registration statement in accordance with the intended methods of disposition by
such holder set forth in such registration statement.

     (g) Until the expiration three years after the Issue Date, FBS will not,
and will not permit any of its "affiliates" (as defined in Rule 144 under the
Act) to, resell any of the Securities which constitute "restricted securities"
under Rule 144 that have been reacquired by any of them except pursuant to an
effective registration statement under the Act or any exemption therefrom;
provided, however, that, for purposes of this paragraph, "affiliates" shall not
include the Purchasers or any of their affiliates other than FBS and its
subsidiaries, officers, managers and directors.

     (h) If FBS and the Trust file with the Commission a registration statement
in respect of the Exchange Offer pursuant to Section 2(a), then FBS and the
Trust shall also file with the Commission a registration statement under Section
12 of the Exchange Act and the rules and regulations promulgated thereunder
related to the Exchange Securities (and the Securities and the Registrable
Securities, if any). FBS and the Trust shall use their reasonable best efforts
to cause such registration statement to become effective prior to the 120th day
of the fiscal year of the Trust next succeeding the fiscal year in which the
Exchange Offer has been consummated.

     (i) FBS and the Trust may require each holder of Registrable Securities as
to which a registration statement is being effected pursuant to Section 2(a), as
a condition to such holder's eligibility to exchange the Registrable Securities
for the Exchange Securities, that such holder furnish to FBS and the Trust (or
an agent thereof) in writing information as to the number of "beneficial owners"
(within the meaning of Rule 13d-3 under the Exchange Act) on behalf of whom such
holder holds the Registrable Securities that such holder desires to exchange for
the Exchange Securities.

     4. Registration Expenses.

     If FBS and the Trust file a registration statement pursuant to Section 2(a)
or Section 2(b), the following provisions shall apply:

     FBS agrees to bear and to pay or cause to be paid promptly upon request
being made therefor all expenses incident to the performance by FBS and the
Trust or compliance with this Exchange and Registration Rights Agreement,
including, without limitation, (a) all Commission and any NASD registration and
filing fees and expenses, (b) all fees and expenses in connection with the
qualification of the Securities and the Guarantee for offering and sale under
the state securities and blue sky laws referred to in Section 3(d)(x) hereof,

                                       17
<PAGE>
 
including reasonable fees and disbursements of counsel in connection with such
qualifications, (c) all expenses relating to the preparation, printing,
distribution and reproduction of each registration statement required to be
filed hereunder, each prospectus included therein or prepared for distribution
pursuant hereto, each amendment or supplement to the foregoing, and the
certificates representing the Securities and all documents relating hereto, (d)
messenger and delivery expenses, (e) fees and expenses of the Debenture Trustee
under the Indenture, the Issuer Trustees under the Trust Agreement and the
Guarantee Trustee under the Guarantee Agreement and of any escrow agent or
custodian, (f) internal expenses (including, without limitation, all salaries
and expenses of FBS's officers and employees performing legal or accounting
duties), (g) fees, disbursements and expenses of counsel and independent
certified public accountants of FBS and the Trust (including the expenses of any
opinions or "cold comfort" letters required by or incident to such performance
and compliance), (h) fees, disbursements and expenses of any "qualified
independent underwriter" engaged pursuant to Section 3(d)(xvii) hereof, (i)
fees, disbursements and expenses of one counsel for the holders of Registrable
Securities retained in connection with a Shelf Registration, as selected by the
holders of at least a majority in aggregate Liquidation Amount of the
Registrable Securities being registered, and fees, expenses and disbursements of
any other persons, including special experts, retained by FBS or the Trust in
connection with such registration (collectively, the "Registration Expenses").
To the extent that any Registration Expenses are incurred, assumed or paid by
any holder of Registrable Securities or any placement or sales agent therefor or
underwriter thereof, FBS shall reimburse such person for the full amount of the
Registration Expenses so incurred, assumed or paid promptly after receipt of a
written request therefor. Notwithstanding the foregoing, the holders of the
Registrable Securities being registered shall pay all agency or brokerage fees
and commissions and underwriting discounts and commissions attributable to the
sale of such Registrable Securities and the fees and disbursements of any
counsel or other advisors or experts retained by such holders (severally or
jointly), other than the counsel and experts specifically referred to above,
transfer taxes on resale of any of the Securities by such holders and any
advertising or solicitation expenses other than expenses specifically referred
to above incurred by or on behalf of such holders in connection with any offers
they may make.

     5. Representations and Warranties.

     FBS and the Trust, jointly and severally, represent and warrant to, and
agree with, each Purchaser and each of the holders from time to time of
Registrable Securities that:

     (a) Each registration statement covering Registrable Securities, the
Guarantee and the Debentures and each prospectus (including any preliminary or
summary prospectus) contained therein or furnished pursuant to Section 3(d)(ix)
hereof and any further amendments or supplements to any such registration
statement or prospectus, when it becomes effective or is filed with the
Commission, as the case may be, and, in the case of an underwritten offering of
Registrable Securities, at the time of the closing under the underwriting
agreement relating thereto, will conform in all material respects to the
applicable requirements of the Securities Act and the Trust Indenture Act, the
rules and regulations of the Commission promulgated thereunder and any such
registration statement and any amendment thereto will not contain an untrue
statement of a material fact or omit to

                                       18
<PAGE>
 
state a material fact required to be stated therein or necessary to make the
statements therein not misleading and any such prospectus or any amendment or
supplement thereto will not contain an untrue statement of a material fact or
omit to state a material fact required to be stated therein or necessary to make
the statements therein not misleading in light of the circumstances then
existing; and at all times subsequent to the Effective Time of any such
registration statement when a prospectus would be required to be delivered under
the Securities Act, other than from (i) such time as a notice has been given to
holders of Registrable Securities pursuant to Section 3(c)(iii)(F) or Section
3(d)(vi)(F) hereof until (ii) such time as FBS and the Trust furnish an amended
or supplemented prospectus pursuant to Section 3(c)(iv) or Section 3(e) hereof,
as the case may be, each such registration statement, and each prospectus
(including any summary prospectus) contained therein or furnished pursuant to
Section 3(c) or Section 3(d)(ix) hereof, as then amended or supplemented, will
conform in all material respects to the applicable requirements of the
Securities Act and the Trust Indenture Act and the rules and regulations of the
Commission promulgated thereunder and will not contain an untrue statement of a
material fact or omit to state a material fact required to be stated therein or
necessary to make the statements therein not misleading in the light of the
circumstances then existing; provided, however, that this representation and
warranty shall not apply to any statements or omissions made in reliance upon
and in conformity with information furnished in writing to FBS and the Trust by
a holder of Registrable Securities or any placement or sales agent therefor or
underwriter thereof expressly for use therein.

     (b) Any documents incorporated by reference in any prospectus referred to
in Section 5(a) hereof, when they become or became effective or are or were
filed with the Commission, as the case may be, will conform or conformed in all
material respects to the requirements of the Securities Act or the Exchange Act,
as applicable, and none of such documents will contain or contained an untrue
statement of a material fact or will omit or omitted to state a material fact
required to be stated therein or necessary to make the statements therein not
misleading; provided, however, that this representation and warranty shall not
apply to any statements or omissions made in reliance upon and in conformity
with information furnished in writing to FBS and the Trust by a holder of
Registrable Securities expressly for use therein.

     (c) The representations and warranties of the Trust and FBS contained in
Section V of the Purchase Agreement are true and correct with the same force and
effect as though expressly made at and as of the date hereof.

     6. Indemnification.

     (a) Upon the registration of the Registrable Securities pursuant to Section
2 hereof, and in consideration of the agreements of the Purchasers contained
herein, and as an inducement to the Purchasers to purchase the Securities, the
Trust and FBS, jointly and severally, agree to indemnify and hold harmless each
of the holders of Registrable Securities to be included in such registration,
and each person who participates as a placement or sales agent or as an
underwriter in any offering or sale of such Registrable Securities and each
person, if any, who controls such holder, or such placement or sales agent, if
any, or such

                                       19
<PAGE>
 
     underwriter, if any, within the meaning of Section 15 of the Act or Section
     20 of the Exchange Act (each an "Indemnified Person") as follows:

               (i)  against any and all loss, liability, claim, damage and
          expense whatsoever arising out of any untrue statement or alleged
          untrue statement of a material fact contained in any registration
          statement under which such Registrable Securities were registered
          under the Securities Act, or any preliminary, final or summary
          prospectus contained therein as furnished by the Trust or FBS to any
          such holder, agent or underwriter (or any amendment or supplement
          thereto), or the omission or alleged omission therefrom of a material
          fact required to be stated therein or necessary to make the statements
          therein not misleading or arising out of any untrue statement or
          alleged untrue statement of a material fact contained in such
          registration statement or such preliminary, final or summary
          prospectus (or any amendment or supplement thereto) or the omission or
          alleged omission therefrom of a material fact necessary in order to
          make the statements therein, in light of the circumstances under which
          they were made, not misleading, unless such untrue statement or
          omission was made in reliance upon and in conformity with written
          information relating to such Indemnified Person furnished to the Trust
          and FBS by, or on behalf of, such Indemnified Person expressly for use
          in such registration statement or such preliminary, final or summary
          prospectus (or any amendment or supplement thereto);

               (ii) against any and all loss, liability, claim, damage and
          expense whatsoever to the extent of the aggregate amount paid in
          settlement of any litigation, or investigation or proceeding by any
          governmental agency or body, commenced or threatened, or of any claim
          whatsoever based upon any such untrue statement or omission, or any
          such alleged untrue statement or omission (except as made in reliance
          upon and in conformity with information relating to such Indemnified
          Person furnished by, or on behalf of, such Indemnified Person as
          aforesaid), if such settlement is effected with the written consent of
          the Trust and FBS; and

               (iii) against any and all expense whatsoever (including the fees
          and disbursements of counsel chosen by such Indemnified Person),
          reasonably incurred in investigating, preparing or defending against
          any litigation, or investigation or proceeding by any governmental
          agency or body, commenced or threatened, or any claim whatsoever based
          upon any such untrue statement or omission, or any such alleged untrue
          statement or omission (except as made in reliance upon and in
          conformity with information relating to such Indemnified Person
          furnished by, or on behalf of, such Indemnified Person as aforesaid)
          to the extent that any such expense is not paid under (i) or (ii)
          above.

     provided, however, that indemnification with respect to any prospectus
     shall not inure to the benefit of any holder of Registrable Securities or
     Exchange Securities from whom the Person

                                       20
<PAGE>
 
asserting any loss, claim, liability, damage or expense purchased such
Securities, if a copy of the Prospectus (as then amended or supplemented and
furnished by FBS to such holder) was not sent or given by or on behalf of such
holder to such person if such is required by law at or prior to the sale of such
Registrable Securities or Exchange Securities, as the case may be, and if the
prospectus (as so amended and supplemented) would have cured the defect giving
rise to such loss, claim, liability, damage or expense.

     (b) FBS may require, as a condition to including any Registrable Securities
in any registration statement filed pursuant to Section 2 hereof and to entering
into any placement or underwriting agreement with respect thereto, that FBS
shall have received an undertaking reasonably satisfactory to them from the
holder of such Registrable Securities and from each placement agent or
underwriter named in any such placement agreement or underwriting agreement,
severally and not jointly, to indemnify and hold harmless the Trust and FBS and
each person, if any, who controls the Trust or FBS within the meaning of Section
15 of the Securities Act or Section 20 of the Exchange Act against any and all
loss, liability, claim, damage and expense described in the indemnity contained
in subsection (a) of this Section, but only with respect to untrue statements or
omissions, or alleged untrue statements or omissions, made in any registration
statement under which such Registrable Securities were registered under the
Securities Act, or any preliminary, final or summary prospectus contained
therein as furnished by the Trust or FBS to any such holder, agent or
underwriter (or any amendment or supplement thereto), in reliance upon and in
conformity with written information relating to such holder, or such placement
or sales agent, if any, or such underwriter, if any, furnished to the Trust and
FBS by or on behalf of such holder, or such placement or sales agent, if any, or
such underwriter, if any, expressly for use in such registration statement or
such preliminary, final or summary prospectus (or any amendment or supplement
thereto).

     (c) Each indemnified party shall give prompt notice to each indemnifying
party of any action commenced against it in respect of which indemnity may be
sought hereunder but failure to so notify an indemnifying party shall not
relieve it from any liability which it may have otherwise than on account of
this indemnity agreement. An indemnifying party may participate at its own
expense in the defense of such action. In no event shall the indemnifying
parties be liable for the fees and expenses of more than one counsel (in
addition to any local counsel) for all indemnified parties in connection with
any one action or separate but similar or related actions in the same
jurisdiction arising out of the same general allegations or circumstances;
provided, however, that when more than one of such holders, such placement or
sales agents, if any, or such underwriters, if any, is an indemnified party each
such holder, placement or sales agent or such underwriter, as the case may be,
shall be entitled to separate counsel (in addition to any local counsel) in each
such jurisdiction to the extent such holder, placement or sales agent or such
underwriter, as the case may be, may have interests conflicting with those of
the other holder, placement or sales agent or such underwriter, as the case may
be. No indemnifying party shall, without the prior written consent of the
indemnified party, effect any settlement of any pending or threatened proceeding
in respect of which any indemnified party is or could have been a party and
indemnity could have been sought hereunder by such indemnified party, unless
such settlement includes an unconditional release of such indemnified party from
all liability on claims that are the subject matter of such proceeding.

                                       21
<PAGE>
 
     In order to provide for just and equitable contribution in circumstances in
which the indemnity agreement provided for in this Section 6 is for any reason
held to be unavailable to such holders, such placement or sales agents, if any,
or such underwriters, if any, in accordance with its terms, the Trust, FBS and
such holders, such placement and sales agents, if any, and such underwriters, if
any, shall contribute to the aggregate losses, liabilities, claims, damages and
expenses of the nature contemplated by said indemnity agreement incurred by the
Trust, FBS and such holders, such placement and sales agents, if any, and such
underwriters, if any, in such proportions as is appropriate to reflect the
relative benefits received by the Trust and FBS on the one hand and such
holders, such placement and sales agents, if any, and such underwriters, if any,
on the other. The relative benefits received by the Trust and FBS on the one
hand and such holders, such placement and sales agents, if any, and such
underwriters, if any, on the other shall be deemed to be in such proportion
represented by the percentage that the total commissions and underwriting
discounts received by such holders, such placement and sales agents, if any, and
such underwriters, if any, to the date of such liability bears to the total
sales price (before deducting expenses) received by the Trust and such holders,
such placement and sales agents, if any, and such underwriters, if any, from the
sale of such Securities made to the date of such liability, and the Trust and
FBS are jointly and severally responsible for the balance. If, however, the
allocation provided by the immediately preceding sentence is not permitted by
applicable law or if such holders, such placement and sales agents, if any, and
such underwriters, if any, failed to give the notice required under this
subsection (c), then the Trust, FBS and such holders, such placement and sales
agents, if any, and such underwriters, if any, shall contribute to such
aggregate losses, liabilities, claims, damages and expenses in such proportion
as is appropriate to reflect not only such relative benefits but also the
relative fault of the Trust and FBS on the one hand and such holders, such
placement and sales agents, if any, and such underwriters, if any, on the other
in connection with the statements or omissions which resulted in such
liabilities, claims, damages and expenses, as well as any other relevant
equitable considerations. The relative fault shall be determined by reference
to, among other things, whether the untrue or alleged untrue statement of a
material fact or the omission or alleged omission to state a material fact
relates to information supplied by the Trust and FBS on the one hand or is
supplied by, or on behalf of, such holders, such placement or sales agents, if
any, and such underwriters, if any, on the other and the parties' relative
intent, knowledge, access to information and opportunity to correct or prevent
such statement or omission. The Trust, FBS and such holders, such placement or
sales agents, if any, and such underwriters, if any, agree that it would not be
just and equitable if contributions pursuant to this paragraph were determined
pro rata (even if such holders, such placement or sales agents, if any, and such
underwriters, if any, were treated as one entity for such purpose) or by any
other method of allocation which does not take account of the equitable
considerations referred to in this paragraph. Notwithstanding the provisions of
this paragraph, such holders, such placement or sales agents, if any, and such
underwriters, if any, shall not be required to contribute any amount in excess
of the amount by which the total price at which the Securities referred to in
the second sentence of this paragraph that were offered and sold to the public
through such holders, such placement or sales agents, if any, and such
underwriters, if any, exceeds the amount of any damages that such holders, such
placement or sales agents, if any, and such underwriters, if any, have otherwise
been required to pay by reason of such untrue or alleged untrue statement or
omission or alleged omission. No person guilty of fraudulent misrepresentation
(within the meaning of Section 

                                      22
<PAGE>
 
11(f) of the Act) shall be entitled under this paragraph to contribution from
any person who was not guilty of such fraudulent misrepresentation. For purposes
of this Section, each person, if any, who controls any such holders, such
placement or sales agents, if any, and such underwriters, if any, within the
meaning of Section 15 of the Act or Section 20 of the Exchange Act shall have
the same rights to contribution as such holders, such placement or sales agents,
if any, and such underwriters, if any, and each person, if any, who controls the
Trust or FBS within the meaning of Section 15 of the Act or Section 20 of the
Exchange Act shall have the same rights to contribution as the Trust or FBS.

     7. Underwritten Offerings.

     (a) Selection of Underwriters. If any of the Registrable Securities covered
by the Shelf Registration are to be sold pursuant to an underwritten offering,
the managing underwriter or underwriters thereof shall be designated by the
holders of at least a majority in aggregate Liquidation Amount of the
Registrable Securities to be included in such offering, provided that such
designated managing underwriter or underwriters is or are reasonably acceptable
to the Trust and FBS.

     (b) Participation by Holders. Each holder of Registrable Securities hereby
agrees with each other such holder that no such holder may participate in any
underwritten offering hereunder unless such holder (i) agrees to sell such
holder's Registrable Securities on the basis provided in any underwriting
arrangements approved by the persons entitled hereunder to approve such
arrangements and (ii) completes and executes all questionnaires, powers of
attorney, indemnities, underwriting agreements and other documents reasonably
required under the terms of such underwriting arrangements.

     (c) Consolidated Earnings Statements. In the event of an underwritten
offering, FBS agrees to make generally available to holders of Securities as
soon as practicable, but in any event not later than eighteen months after the
effective date of the applicable registration statement (as defined in Rule
158(c) under the Securities Act), a consolidated earnings statement of FBS
(which need not be audited) complying with Section 11 (a) of the Act and the
rules and regulations of the Commission thereunder (including, at the option of
FBS, Rule 158 under the Securities Act)

     8. Rule 144.

     FBS covenants to the holders of Registrable Securities that to the extent
it shall be required to do so under the Exchange Act, FBS shall timely file the
reports required to be filed by it under the Exchange Act or the Securities Act
(including, but not limited to, the reports under Section 13 and 15(d) of the
Exchange Act referred to in subparagraph (c)(1) of Rule 144 adopted by the
Commission under the Securities Act) and the rules and regulations adopted by
the Commission thereunder, and shall take such further action as any holder of
Registrable Securities may reasonably request, all to the extent required from
time to time to make Rule 144 available to such holder for the sale of
Registrable Securities without registration under the Securities Act within the
limitations of the exemption provided by Rule 144 under the Securities Act, as
such Rule may be amended from time to time, or any similar or successor rule or
regulation hereafter adopted by the Commission. Upon the

                                       23
<PAGE>
 
request of any holder of Registrable Securities in connection with that holder's
sale pursuant to Rule 144, FBS shall deliver to such holder a written statement
as to whether it has complied with such requirements.

     9. Miscellaneous.

     (a) No Inconsistent Agreements. Each of the Trust and FBS represents,
warrants, covenants and agrees that it has not granted, and shall not grant,
registration rights with respect to Registrable Securities or any other
securities which would be inconsistent with the terms contained in this Exchange
and Registration Rights Agreement and that the Debenture Exchange and
Registration Rights Agreement and the Guarantee Exchange and Registration Rights
Agreement should be construed to be consistent with the terms hereof.

     (b) Specific Performance. The parties hereto acknowledge that there would
be no adequate remedy at law if any party fails to perform any of its
obligations hereunder and that each party may be irreparably harmed by any such
failure and accordingly agree that each party, in addition to any other remedy
to which it may be entitled at law or in equity, shall be entitled to compel
specific performance of the obligations of any other party under this Exchange
and Registration Rights Agreement in accordance with the terms and conditions of
this Exchange and Registration Rights Agreement, in any court of the United
States or any State thereof having jurisdiction.

     (c) Notices. All notices, requests, claims, demands, waivers and other
communications hereunder shall be in writing and shall be deemed to have been
duly given when delivered by hand, if delivered personally or by courier, or
three days after being deposited in the mail (registered or certified mail,
postage prepaid, return receipt requested) as follows: First Bank System, Inc.,
First Bank Place, 601 Second Avenue South, Minneapolis, Minnesota 55402 and if
to a holder, to the address of such holder set forth in the security register or
other records of the Trust, or to such other address as any party may have
furnished to the others in writing in accordance herewith, except that notices
of change of address shall be effective only upon receipt.

     (d) Parties in Interest. All the terms and provisions of this Exchange and
Registration Rights Agreement shall be binding upon, shall inure to the benefit
of and shall be enforceable by the respective successors and assigns of the
parties hereto. In the event that any transferee of any holder of Registrable
Securities shall become a holder of Registrable Securities, in any manner,
whether by gift, bequest, purchase, operation of law or otherwise, such
transferee shall, without any further writing or action of any kind, be deemed a
party hereto for all purposes and such Registrable Securities shall be held
subject to all of the terms of this Exchange and Registration Rights Agreement,
and by taking and holding such Registrable Securities such transferee shall be
entitled to receive the benefits of and be conclusively deemed to have agreed to
be bound by and to perform all of the terms and provisions of this Exchange and
Registration Rights Agreement. If FBS shall so request, any such successor,
assign or transferee shall agree in writing to acquire and hold the Registrable
Securities subject to all of the terms hereof.

                                       24
<PAGE>
 
     (e) Survival. The respective indemnities, agreements, representations,
warranties and each other provision set forth in this Exchange and Registration
Rights Agreement or made pursuant hereto shall remain in full force and effect
regardless of any investigation (or statement as to the results thereof) made by
or on behalf of any holder of Registrable Securities, any director, officer or
partner of such holder, any agent or underwriter or any director, officer or
partner thereof, or any controlling person of any of the foregoing, and shall
survive delivery of and payment for the Registrable Securities pursuant to the
Purchase Agreement and the transfer and registration of Registrable Securities
by such holder and the consummation of an Exchange Offer. In addition, the
respective indemnities, representations and warranties set forth herein shall
survive the termination hereof.

     (f) LAW GOVERNING. THIS EXCHANGE AND REGISTRATION RIGHTS AGREEMENT SHALL BE
GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK.

     (g) Headings. The descriptive headings of the several Sections and
paragraphs of this Exchange and Registration Rights Agreement are inserted for
convenience only, do not constitute a part of this Exchange and Registration
Rights Agreement and shall not affect in any way the meaning or interpretation
of this Exchange and Registration Rights Agreement.

     (h) Entire Agreement; Amendments. This Exchange and Registration Rights
Agreement and the other agreements referred to herein or delivered pursuant
hereto which form a part hereof contain the entire understanding of the parties
with respect to its subject matter. This Exchange and Registration Rights
Agreement and such other agreements referred to herein supersede all prior
agreements and understandings between the parties with respect to its subject
matter. This Exchange and Registration Rights Agreement may be amended and the
observance of any term of this Exchange and Registration Rights Agreement may be
waived (either generally or in a particular instance and either retroactively or
prospectively) only by a written instrument duly executed by FBS, the Trust and
the holders of at least 66-2/3 percent in aggregate principal amount of the
Registrable Securities at the time outstanding. Each holder of any Registrable
Securities at the time or thereafter outstanding shall be bound by any amendment
or waiver effected pursuant to this Section 9(h), whether or not any notice,
writing or marking indicating such amendment or waiver appears on such
Registrable Securities or is delivered to such holder.

     (i) Inspection. For so long as this Exchange and Registration Rights
Agreement shall be in effect, this Exchange and Registration Rights Agreement
and a complete list of the names and addresses of all the registered holders of
Registrable Securities shall be made available for inspection and copying on any
business day by any holder of Registrable Securities at the offices of FBS at
the address thereof set forth in Section 9(c) above.


     (j) Counterparts. This agreement may be executed by the parties in
counterparts, each of which shall be deemed to be an original, but all such
respective counterparts shall together constitute one and the same instrument.

                                       25
<PAGE>
 
This Agreement is hereby executed as of the day and year first above written.

                                       FIRST BANK SYSTEM, INC.

                                           /s/ Kenneth D. Nelson
                                       By:_________________________________
                                           Name: Kenneth D. Nelson
                                           Title: Vice President

                                       FBS CAPITAL I
                                           
                                           /s/ Lee R. Mitau 
                                       By:_________________________________
                                           Administrative Agent


                                       GOLDMAN, SACHS & CO.

                                       As Representative of the Purchasers Named
                                       in Schedule I to the Purchase Agreement

                                           /s/ Goldman, Sachs & Co.
                                       By:_________________________________
                                           (Goldman, Sachs & Co.)

                                       Acting severally, and not jointly and
                                       severally, on behalf of themselves and
                                       each of the Purchasers named in Schedule
                                       I to the Purchase Agreement
                                                                                
                                                





<PAGE>
 
                                                                    EXHIBIT 4.12


                  EXCHANGE AND REGISTRATION RIGHTS AGREEMENT

EXCHANGE AND REGISTRATION RIGHTS AGREEMENT, dated November 26, 1996, by and
among FBS Capital I, a Delaware business trust (the "Trust"), First Bank System,
Inc., a Delaware corporation registered as a bank holding company under the Bank
Holding Company Act of 1956, as amended ("FBS") and Goldman, Sachs & Co., Morgan
Stanley & Co. Incorporated, Lehman Brothers Inc., Merrill Lynch, Pierce, Fenner
& Smith Incorporated, Dain Bosworth Incorporated and Piper Jaffray Inc.
(collectively, the "Purchasers") of the 8.09% Capital Securities of the Trust.

     1.  Certain Definitions.  For purposes of this Exchange and Registration
Rights Agreement, the following terms shall have the following respective
meanings:

     (a)  "Commission" means the Securities and Exchange Commission, or any
other federal agency at the time administering the Exchange Act or the
Securities Act, whichever is the relevant statute for the particular purpose.

     (b)  "Debenture Exchange and Registration Rights Agreement" means the
Exchange and Registration Rights Agreement in respect of the Debentures dated
November 26, 1996 among FBS, the Trust and the Purchasers.

     (c)  "Debentures" means the 8.09% Junior Subordinated Deferrable Interest
Debentures due November 15, 2026 of FBS, to be issued pursuant to the Indenture.

     (d)  "Effective Time", in the case of (i) an Exchange Offer, means the date
on which the Commission declares the Exchange Offer registration statement
effective or on which such registration statement otherwise becomes effective
and (ii) a Shelf Registration, means the date on which the Commission declares
the Shelf Registration effective or on which the Shelf Registration otherwise
becomes effective.

     (e)  "Exchange Act" means the Securities Exchange Act of 1934, or any
successor thereto, as amended from time to time.

     (f)  "Exchange Debentures" has the meaning set forth in Section 2(a)
hereof.

     (g)  "Exchange Guarantee" has the meaning set forth in Section 2(a) hereof.

     (h)  "Exchange Offer" has the meaning set forth in Section 2(a) hereof.

     (i)  "Exchange Securities" has the meaning set forth in Section 2(a)
hereof.

     (j)  "Guarantee" means the Guarantee of FBS with respect to the Securities,
to the extent set forth in the Guarantee Agreement.

     (k)  "Guarantee Agreement" means the Guarantee Agreement dated November 26,
1996 between FBS and the Property Trustee for the benefit of the holders of the
Securities.
<PAGE>
 
     (l)  "Capital Securities Exchange and Registration Rights Agreement" means
the Exchange and Registration Rights Agreement in respect of the Securities
dated November 26, 1996 among FBS, the Trust and the Purchasers.

     (m)  The term "holder" has the meaning set forth in the Capital Securities
Exchange and Registration Rights Agreement.

     (n)  "Indenture" means the Indenture dated as of November 15, 1996, between
FBS and Wilmington Trust Company, as Debenture Trustee, as supplemented by an
officer's certificate dated November 26, 1996, and as further amended or
supplemented from time to time.

     (o)  "Issue Date" means November 26, 1996.

     (p)  "Liquidation Amount" means the stated liquidation preference of the
Securities.

     (q)  "New Guarantee Agreement" has the meaning set forth in Section 2(a)
hereof.

     (r)  The term "person" means a corporation, association, partnership,
organization, business, individual, government or political subdivision thereof
or governmental agency.

     (s)  "Purchase Agreement" means the Purchase Agreement dated November 19,
1996, among FBS, the Trust and the Purchasers.

     (t)  "Registrable Securities" has the meaning set forth in the Capital
Securities Exchange and Registration Rights Agreement.

     (u)  "Registration Expenses" has the meaning set forth in Section 4 hereof.

     (v)  "Resale Period" has the meaning set forth in the Capital Securities
Exchange and Registration Rights Agreement.

     (w)  "Securities" means, collectively, the $300,000,000 aggregate
Liquidation Amount of the 8.09% Capital Securities, Liquidation Amount $1,000
per Capital Security, of the Trust to be issued and sold to the Purchasers, and
any securities issued in exchange therefor or in lieu thereof pursuant to the
Trust Agreement.

     (x)  "Securities Act" means the Securities Act of 1933, or any successor
thereto, as the same shall be amended from time to time.

     (y)  "Shelf Registration" has the meaning set forth in Section 2(b) hereof.

     (z)  "Trust Agreement" means the Amended and Restated Trust Agreement dated
as of November 26, 1996 among FBS, as Depositor, Wilmington Trust Company, as
Property Trustee and Delaware Trustee and Administrative Agents named therein.

                                       2
<PAGE>
 
     (aa) "Trust Indenture Act" means the Trust Indenture Act of 1939, or any
successor thereto, and the rules, regulations and forms promulgated thereunder,
all as amended from time to time.

     Unless the context otherwise requires, any reference herein to a "Section"
or "clause" refers to a Section or clause, as the case may be, of this Exchange
and Registration Rights Agreement, and the words "herein," "hereof" and
"hereunder" and other words of similar import refer to this Exchange and
Registration Rights Agreement as a whole and not to any particular Section or
other subdivision

     2.  Registration Under the Securities Act.

     (a)  If FBS and the Trust file a registration statement pursuant to Section
2(a) of the Capital Securities Exchange and Registration Rights Agreement, then
FBS and the Trust agree, jointly and severally, to include in such registration
statement an offer to exchange (the "Exchange Offer") the Guarantee for a new
guarantee of FBS to be extended pursuant to a new guarantee agreement to be
entered into by FBS and the Property Trustee for the benefit of holders of the
Exchange Securities (as defined below), the Registrable Securities, if any, and
the Securities, if any (the "New Guarantee Agreement"), which will be qualified
under the Trust Indenture Act, such new guarantee to be substantially identical
to the Guarantee except that it will relate to the Exchange Securities, the
Registrable Securities, if any, and the Securities, if any, and it will be
registered pursuant to an effective registration statement under the Securities
Act and such new guarantee will not contain provisions restricting transfer in
the absence of registration under the Securities Act (such new guarantee
hereinafter called "Exchange Guarantee"). Such registration statement shall also
relate to, and the consummation of the Exchange Offer shall be conditioned upon
the consummation of, an offer to exchange the Debentures for substantially
identical debentures of FBS pursuant to the Debenture Exchange and Registration
Rights Agreement (the "Exchange Debentures") and to an offer to exchange the
Securities for substantially identical capital securities of the Trust pursuant
to the Capital Securities Exchange and Registration Rights Agreement (the
"Exchange Securities"). FBS and the Trust agree, jointly and severally, to use
their reasonable best efforts to cause such registration statement to become
effective under the Securities Act as soon as practicable thereafter. The
Exchange Offer will be registered under the Act on the appropriate form. The
Exchange Offer shall be deemed to have been completed upon the completion of the
exchange of the Exchange Guarantee for the Guarantee pursuant to the Exchange
Offer.

     (b)  If FBS and the Trust file a "shelf" registration statement pursuant to
section 2(b) of the Capital Securities Exchange and Registration Rights
Agreement without also filing a registration statement pursuant to Section 2(a)
thereof, then such "shelf" registration statement shall provide for the
registration of the Guarantee (the "Shelf Registration"). The Shelf Registration
shall also provide for the registration of the Debentures pursuant to the
Debenture Exchange and Registration Rights Agreement and for the registration of
and the sale on a continuous or delayed basis by the holders of, all of the
Securities pursuant to Rule 415 under the Securities Act and/or any similar rule
that may be adopted by the Commission pursuant to the Capital Securities
Exchange and Registration Rights Agreement. FBS and the Trust agree, jointly and
severally, to use their reasonable best efforts to cause the Shelf

                                       3
<PAGE>
 
Registration to become or be declared effective and to keep such Shelf
Registration continuously effective for a period ending on the earlier of (A)
the third anniversary of the Issue Date or (B) the later of (i) such time as
there are no longer any Securities outstanding or (ii) as required under the
Debenture Exchange and Registration Rights Agreement. FBS and the Trust further
agree, jointly and severally, to supplement or make amendments to the Shelf
Registration, as and when required by the rules, regulations or instructions
applicable to the registration form used by FBS and the Trust for such Shelf
Registration or by the Securities Act or rules and regulations thereunder for
shelf registration.

     (c)  Any reference herein to a registration statement shall be deemed to
include any document incorporated therein by reference as of the applicable
Effective Time and any reference herein to any post effective amendment to a
registration statement shall be deemed to include any document incorporated
therein by reference as of a time after such Effective Time.

     3.  Registration Procedures.

     If FBS and the Trust file a registration statement pursuant to Section 2(a)
or Section 2(b), the following provisions shall apply:

     (a)  At or before the Effective Time of the Exchange Offer or the Shelf
Registration, as the case may be, FBS shall qualify the Indenture, the New
Guarantee Agreement and the Trust Agreement under the Trust Indenture Act.

     (b)  In the event that such qualification would require the appointment of
a new trustee under any of the Indenture, the New Guarantee Agreement or the
Trust Agreement, such new trustee shall be appointed thereunder pursuant to the
applicable provisions thereof.

     (c)  In connection with the joint and several obligations of FBS and the
Trust with respect to the registration of the Exchange Securities, the Exchange
Guarantee and the Exchange Debentures, as contemplated by Section 2(a) (the
"Exchange Registration"), if applicable, FBS and the Trust shall, as soon as
reasonably possible (or as otherwise specified):

                    (i)  prepare and file with the Commission, as soon as
               practicable but no later than 150 days after the Issue Date, a
               registration statement with respect to the Exchange Registration
               on any form which may be utilized by FBS and the Trust and which
               shall permit the Exchange Offer and resales of Exchange
               Securities by broker-dealers during the Resale Period to be
               effected, and use its reasonable best efforts to cause such
               registration statement to become effective as soon as practicable
               thereafter;

                    (ii) as soon as practicable prepare and file with the
               Commission such amendments and supplements to such registration
               statement and the prospectus included therein as may be necessary
               to effect and maintain the effectiveness of such registration
               statement for the periods and purposes contemplated hereby and by
               the Capital Securities Exchange and

                                       4
<PAGE>
 
               Registration Rights Agreement and as may be required by the
               applicable rules and regulations of the Commission and the
               instructions applicable to the form of such registration
               statement, and promptly provide each broker-dealer holding
               Exchange Securities with such number of copies of the prospectus
               included therein (as then amended or supplemented), in conformity
               in all material respects with the requirements of the Securities
               Act and the Trust Indenture Act and the rules and regulations of
               the Commission promulgated thereunder, as such broker-dealer
               reasonably may request prior to the expiration of the Resale
               Period, for use in connection with resales of Exchange
               Securities;

                    (iii) promptly notify each broker-dealer that has
               requested or received copies of the prospectus included in such
               registration statement, and confirm such advice in writing, (A)
               when such registration statement or the prospectus included
               therein or any prospectus amendment or supplement or post
               effective amendment has been filed, and, with respect to such
               registration statement or any post effective amendment, when the
               same has become effective, (B) of the receipt of any comments by
               the Commission and by the Blue Sky or securities commissioner or
               regulator of any state with respect thereto or any request by the
               Commission for amendments or supplements to such registration
               statement or prospectus or for additional information, (C) of the
               issuance by the Commission of any stop order suspending the
               effectiveness of such registration statement or the initiation or
               threatening of any proceedings for that purpose, (D) if at any
               time the joint and several representations and warranties of FBS
               and the Trust contemplated by Section 5 cease to be true and
               correct in all material respects, (E) of the receipt by either
               FBS or the Trust of any notification with respect to the
               suspension of the qualification of the Exchange Securities and
               the Exchange Guarantee for sale in any United States jurisdiction
               or the initiation or threatening of any proceeding for such
               purpose, or (F) at any time during the Resale Period when a
               prospectus is required to be delivered under the Securities Act,
               that such registration statement, prospectus, prospectus
               amendment or supplement or post effective amendment does not
               conform in all material respects to the applicable requirements
               of the Securities Act and the Trust Indenture Act and the rules
               and regulations of the Commission promulgated thereunder or
               contains an untrue statement of a material fact or omits to state
               a material fact required to be stated therein or necessary to
               make the statements therein not misleading in light of the
               circumstances then existing;

                    (iv)  in the event that FBS and the Trust would be
               required, pursuant to Section 3(c)(iii)(F) above, to notify any
               broker-dealers holding Exchange Securities, without delay prepare
               and furnish to each such holder a reasonable number of copies of
               a prospectus supplemented or amended so that, as thereafter
               delivered to purchasers of such Exchange Securities during the
               Resale Period, such prospectus shall conform in all material
               respects to the applicable requirements of the Securities Act and
               the Trust

                                       5
<PAGE>
 
               Indenture Act and the rules and regulations of the Commission
               promulgated thereunder and shall not contain an untrue statement
               of a material fact or omit to state a material fact required to
               be stated therein or necessary to make the statements therein not
               misleading in light of the circumstances then existing;

                    (v)    use their best efforts to obtain the withdrawal of
               any order suspending the effectiveness of such registration
               statement or any post effective amendment thereto at the earliest
               practicable date;

                    (vi)   use their reasonable best efforts to (A) register
               or qualify the Exchange Securities and the Exchange Guarantee
               under the securities laws or blue sky laws of such jurisdiction
               as are contemplated by Section 2(a) no later than the
               commencement of the Exchange Offer, (B) keep such registrations
               or qualifications in effect and comply with such laws so as to
               permit the continuance of offers, sales and dealings therein in
               such jurisdictions until the expiration of the Resale Period and
               (C) take any and all other actions as may be reasonably necessary
               or advisable to enable each broker-dealer holding Exchange
               Securities to consummate the disposition thereof in such
               jurisdictions; provided, however, that neither FBS nor the Trust
               shall be required for any such purpose to (1) qualify to do
               business in any jurisdiction wherein it would not otherwise be
               required to qualify but for the requirements of this Section
               3(g)(vi), (2) consent to general service of process in any such
               jurisdiction or (3) in the case of FBS, make any changes to its
               charter or by-laws or any agreement between it and its
               stockholders or in the case of the Trust, make any changes to the
               Trust Agreement;

                    (vii)  use their reasonable best efforts to obtain the
               consent or approval of each United States governmental agency or
               authority, whether federal, state or local, which may be required
               to effect the Exchange Registration, the Exchange Offer and the
               offering and sale of Exchange Securities by broker-dealers during
               the Resale Period;

                    (viii) provide a CUSIP number for all Exchange Securities,
               not later than the applicable Effective Time; and

                    (ix)   comply with all applicable rules and regulations of
               the Commission, and make generally available to all holders of
               Securities as soon as practicable but no later than eighteen
               months after the Effective Time, an earnings statement of FBS and
               its subsidiaries complying with Section 11 (a) of the Securities
               Act (including, at the option of FBS, Rule 158 thereunder).

     (d)  In connection with the joint and several obligations of FBS and the
Trust with respect to the Shelf Registration, if applicable, FBS and the Trust
shall use their reasonable best efforts to cause the Shelf Registration to
become effective to permit the sale of the

                                       6
<PAGE>
 
Registrable Securities by the holders thereof in accordance with the intended
method or methods of distribution thereof described in the Shelf Registration.
In connection therewith, FBS and the Trust shall as soon as reasonably possible
(or as otherwise specified):

                    (i)    prepare and file with the Commission, as soon as
               practicable, a registration statement with respect to the Shelf
               Registration on any form which may be utilized by FBS and the
               Trust and which shall permit the disposition of the Registrable
               Securities in accordance with the intended method or methods
               thereof, as specified in writing to FBS and the Trust by the
               holders of the Registrable Securities and use their reasonable
               best efforts to cause such registration statement to become
               effective as soon as practicable thereafter;

                    (ii)   as soon as practicable, prepare and file with the
               Commission such amendments and supplements to such registration
               statement and the prospectus included therein as may be necessary
               to effect and maintain the effectiveness of such registration
               statement for the period specified in Section 2(b) hereof and as
               may be required by the applicable rules and regulations of the
               Commission and the instructions applicable to the form of such
               registration statement and furnish to the holders of the
               Registrable Securities copies of any such supplement or amendment
               simultaneously with or prior to its being used or filed with the
               Commission;

                    (iii)  comply with the provisions of the Securities Act
               applicable to FBS or the Trust in connection with the disposition
               of all of the Registrable Securities covered by such registration
               statement in accordance with the intended methods of disposition
               by the holders thereof, set forth in such registration statement;

                    (iv)   provide (A) the holders of the Registrable Securities
               to be included in such registration statement and not more than
               one counsel for all the holders of such Registrable Securities,
               (B) the underwriters (which term, for purposes of this Exchange
               and Registration Rights Agreement, shall include a person deemed
               to be an underwriter within the meaning of Section 2(11) of the
               Securities Act), if any, thereof, (C) the sales or placement
               agent, if any, therefor and (D) one counsel for such underwriters
               or agents, if any, reasonable opportunity to participate in the
               preparation of such registration statement, each prospectus
               included therein or filed with the Commission, and each amendment
               or supplement thereto;

                    (v)    for a reasonable period prior to the filing of such
               registration statement, and throughout the period specified in
               Section 2(b), make available at reasonable times at FBS's
               principal place of business or such other reasonable place for
               inspection by the persons referred to in Section 3(d)(iv) who
               shall certify to FBS and the Trust that they have a current
               intention to sell the Registrable Securities pursuant to the
               Shelf Registration such financial and other information and books
               and records of FBS and the

                                       7
<PAGE>
 
               Trust, and cause the officers, employees, counsel and independent
               certified public accountants of FBS and the Trust to respond to
               such inquiries, as shall be reasonably necessary, in the judgment
               of the respective counsel referred to in such Section, to conduct
               a reasonable investigation within the meaning of Section 11 of
               the Securities Act; provided, however, that each such party shall
               be required to maintain in confidence and not to disclose to any
               other person any information or records reasonably designated by
               FBS as being confidential, until such time as (A) such
               information becomes a matter of public record (whether by virtue
               of its inclusion in such registration statement or otherwise,
               except by disclosure by such party in breach of this Agreement),
               or (B) such person shall be required so to disclose such
               information pursuant to the subpoena or order of any court or
               other governmental agency or body having jurisdiction over the
               matter (subject to, and only to the extent required by, the
               requirements of such order, and only after such person shall have
               given FBS prompt prior written notice of such requirement);

                    (vi)   promptly notify the selling holders of Registrable
               Securities, the sales or placement agent, if any, therefor and
               the managing underwriter or underwriters, if any, thereof and
               confirm such advice in writing, (A) when such registration
               statement or the prospectus included therein or any prospectus
               amendment or supplement or post-effective amendment has been
               filed, and, with respect to such registration statement or any
               post-effective amendment, when the same has become effective, (B)
               of any comments by the Commission and by the Blue Sky or
               securities commissioner or regulator of any state with respect
               thereto or any request by the Commission for amendments or
               supplements to such registration statement or prospectus or for
               additional information, (C) of the issuance by the Commission of
               any stop order suspending the effectiveness of such registration
               statement or the initiation or threatening of any proceedings for
               that purpose, (D) if at any time the joint and several
               representations and warranties of FBS and the Trust contemplated
               by Section 3(d)(xv) or Section 5 cease to be true and correct in
               all material respects, (E) of the receipt by either FBS or the
               Trust of any notification with respect to the suspension of the
               qualification of the Registrable Securities and the Guarantee for
               sale in any jurisdiction or the initiation or threatening of any
               proceeding for such purpose, or (F) at any time when a prospectus
               is required to be delivered under the Securities Act, that such
               registration statement, prospectus, prospectus amendment or
               supplement or post-effective amendment, or any document
               incorporated by reference in any of the foregoing, does not
               conform in all material respects to the applicable requirements
               of the Securities Act and the Trust Indenture Act and the rules
               and regulations of the Commission promulgated thereunder or
               contains an untrue statement of a material fact or omits to state
               any material fact required to be stated therein or necessary to
               make the statements therein not misleading in light of the
               circumstances then existing;

                                       8
<PAGE>
 
                    (vii)  use their best efforts to obtain the withdrawal
               of any order suspending the effectiveness of such registration
               statement or any post-effective amendment thereto at the earliest
               practicable date;

                    (viii) if requested by any managing underwriter or
               underwriters, any placement or sales agent or any holder or
               counsel for the holders of Registrable Securities, promptly
               incorporate in a prospectus supplement or post-effective
               amendment such information as is required by the applicable rules
               and regulations of the Commission and as such managing
               underwriter or underwriters, such agent or such holder specifies
               should be included therein relating to the terms of the sale of
               such Registrable Securities, including, without limitation,
               information with respect to the Liquidation Amount of Registrable
               Securities being sold by any holder or agent or to any
               underwriters, the name and description of such holder, agent or
               underwriter, the offering price of such Registrable Securities
               and any discount, commission or other compensation payable in
               respect thereof, the purchase price being paid therefor by such
               underwriters and with respect to any other terms of the offering
               of the Registrable Securities, to be sold by such holder or agent
               or to such underwriters; and make all required filings of such
               prospectus supplement or post-effective amendment promptly after
               notification of the matters to be incorporated in such prospectus
               supplement or post-effective amendment;

                    (ix)   furnish to each holder of Registrable Securities,
               each placement or sales agent, if any, therefor, each
               underwriter, if any, thereof and the respective counsel referred
               to in Section 3(d)(iv) an executed copy of such registration
               statement, each such amendment and supplement thereto (in each
               case including all exhibits thereto and documents incorporated by
               reference therein) and such number of copies of such registration
               statement (excluding exhibits thereto and documents incorporated
               by reference therein unless specifically so requested by such
               holder, agent or underwriter, as the case may be) and of the
               prospectus included in such registration statement (including
               each preliminary prospectus and any summary prospectus), in
               conformity with the requirements of the Securities Act and the
               Trust Indenture Act and the rules and regulations of the
               Commission promulgated thereunder, and such other documents, as
               such holder, agent, if any, and underwriter, if any, may
               reasonably request in order to facilitate the offering and
               disposition of the Registrable Securities owned by such holder,
               offered or sold by such agent or underwritten by such underwriter
               and to permit such holder, agent and underwriter to satisfy the
               prospectus delivery requirements of the Securities Act; and each
               of FBS and the Trust hereby consents to the use of such
               prospectus (including such preliminary and summary prospectus)
               and any amendment or supplement thereto by each such holder and
               by any such agent and underwriter, in each case in the form most
               recently provided to such party by FBS and the Trust, in
               connection with the offering and sale of the Registrable
               Securities covered by the prospectus (including such

                                       9
<PAGE>
 
               preliminary and summary prospectus) or any supplement or
               amendment thereto;

                    (x)    use their reasonable best efforts to (A) register
               or qualify the Registrable Securities to be included in such
               registration statement and the Guarantee under such securities
               laws or blue sky laws of such jurisdictions as any holder of such
               Registrable Securities and each placement or sales agent, if any,
               therefor and underwriter, if any, thereof shall reasonably
               request, (B) keep such registrations or qualifications in effect
               and comply with such laws so as to permit the continuance of
               offers, sales and dealings therein in such jurisdictions during
               the period the Shelf Registration is required to remain effective
               under Section 2(b) above and for so long as may be necessary to
               enable any such holder, agent or underwriter to complete its
               distribution of Securities pursuant to such registration
               statement and (C) take any and all other actions as may be
               reasonably necessary or advisable to enable each such holder,
               agent, if any, and underwriter, if any, to consummate the
               disposition in such jurisdictions of Registrable Securities;
               provided, however, that neither FBS nor the Trust shall be
               required for any such purpose to (1) qualify to do business in
               any jurisdiction wherein it would not otherwise be required to
               qualify but for the requirements of this Section 3(d)(x), (2)
               consent to general service of process in any such jurisdiction,
               (3) in the case of FBS, make any changes to its charter or by-
               laws or any agreement between it and its shareholders or in the
               case of the Trust, make any changes to the Trust Agreement;

                    (xi)   use their reasonable best efforts to obtain the
               consent or approval of each governmental agency or authority,
               whether federal, state or local, which may be required to effect
               the Shelf Registration or the offering or sale in connection
               therewith or to enable the selling holder or holders to offer, or
               to consummate the disposition of, their Registrable Securities;

                    (xii)  cooperate with the holders of the Registrable
               Securities and the managing underwriters, if any, to facilitate
               the timely preparation and delivery of certificates representing
               Registrable Securities to be sold, which certificates shall be
               printed, lithographed or engraved, or produced by any combination
               of such methods, and which shall not bear any restrictive
               legends; and, in the case of an underwritten offering, enable
               such Registrable Securities to be in such denominations and
               registered in such names as the managing underwriters may request
               at least two business days prior to any sale of the Registrable
               Securities;

                    (xiii) provide a CUSIP number for all Registrable
               Securities, not later than the applicable Effective Time;

                    (xiv)  enter into not more than one underwriting agreement,
               engagement letter, agency agreement, "best efforts" underwriting
               agreement

                                       10
<PAGE>
 
               or similar agreement, as appropriate, including (without
               limitation) provisions relating to indemnification and
               contribution substantially the same as those set forth in Section
               6 hereof, and take such other actions in connection therewith as
               any holders of Registrable Securities aggregating at least 25% in
               aggregate Liquidation Amount of the Registrable Securities at the
               time outstanding shall reasonably request in order to expedite or
               facilitate the disposition of such Registrable Securities;
               provided, that FBS and the Trust shall not be required to (i)
               enter into any such agreement more than once with respect to all
               of the Registrable Securities and may delay entering into such
               agreement until the consummation of any underwritten public
               offering which FBS and the Trust shall have then undertaken or
               (ii) enter into any engagement letter, agency agreement, "best
               effort" underwriting agreement or similar agreements whatsoever
               with respect to the Registrable Securities, and provided, further
               that FBS and the Trust shall not be obligated to enter into any
               such agreement with a broker-dealer which results in the need for
               a "qualified independent underwriter" (within the meaning of the
               Rules of Fair Practice and the By-Laws of the National
               Association of Securities Dealers, Inc. ("NASD") or any successor
               thereto, as amended from time to time (the "Rules and By-Laws of
               NASD"));

                    (xv)   whether or not an agreement of the type referred to
               in Section (3)(d)(xiv) hereof is entered into and whether or not
               any portion of the offering contemplated by such registration
               statement is an underwritten offering or is made through a
               placement or sales agent or any other entity, (A) make such
               representations and warranties to the holders of such Registrable
               Securities and the placement or sales agent, if any, therefor and
               the underwriters, if any, thereof substantially the same as those
               set forth in Section V of the Purchase Agreement and such other
               representations and warranties as are customarily made with
               respect to the offering of debt securities pursuant to any
               appropriate agreement or to a registration statement on the
               applicable form under the Securities Act; (B) obtain an opinion
               or opinions of counsel to FBS and the Trust substantially the
               same as the opinions provided for in Section IV of the Purchase
               Agreement with such additions, substitutions or deletions of such
               matters as are customarily covered in opinions for an
               underwritten offering, addressed to such holder or holders and
               the placement or sales agent, if any, therefor and the
               underwriters, if any, thereof and dated the effective date of
               such registration statement (and if such registration statement
               contemplates an underwritten offering of a part or all of the
               Registrable Securities, dated the date of the closing under the
               underwriting agreement relating thereto) (it being agreed that
               the matters to be covered by such opinion shall also include,
               without limitation, the absence of governmental approvals
               required to be obtained in connection with the Shelf
               Registration, the offering and sale of the Registrable
               Securities, this Exchange and Registration Rights Agreement or
               any agreement of the type referred to in Section (3)(c)(xiv)
               hereof, except such approvals as may be required under state
               securities or blue sky laws; and the compliance as to form of
               such registration statement and any

                                       11
<PAGE>
 
               documents incorporated by reference therein and of the Indenture,
               the Guarantee Agreement and the Trust Agreement with the
               requirements of the Securities Act and the Trust Indenture Act
               and the rules and regulations of the Commission promulgated
               thereunder, respectively); and, such opinion shall also state
               that such counsel has no reason to believe that, as of the date
               of the opinion and of the registration statement or most recent
               post-effective amendment thereto, as the case may be, such
               registration statement and the prospectus included therein, as
               then amended or supplemented, and the documents incorporated by
               reference therein (in each case other than the financial
               statements and other financial information contained therein)
               contains or contained an untrue statement of a material fact or
               omits or omitted to state therein a material fact necessary to
               make the statements therein not misleading (in the case of such
               documents, in the light of the circumstances existing at the time
               that such documents were filed with the Commission under the
               Exchange Act)); (C) obtain a "cold comfort" letter or letters
               from the independent certified public accountants of FBS and the
               Trust addressed to the selling holders of Registrable Securities,
               the placement or sales agent, if any, therefor and the
               underwriters, if any, thereof, dated (i) the effective date of
               such registration statement and (ii) the effective date of any
               prospectus supplement to the prospectus included in such
               registration statement or post-effective amendment to such
               registration statement substantially in the form of Exhibit F to
               the Purchase Agreement; (D) deliver such other documents and
               certificates, including officers' certificates, as may be
               reasonably requested by any holders of at least 25 % in aggregate
               Liquidation Amount of the Registrable Securities at the time
               outstanding or the placement or sales agent, if any, therefor and
               the managing underwriters, if any, thereof to evidence the
               accuracy of the representations and warranties made pursuant to
               clause (A) above or those contained in Section 5(a) hereof and
               the compliance with or satisfaction of any agreements or
               conditions contained in the underwriting agreement or other
               agreement entered into by FBS and the Trust; and (E) undertake
               such obligations relating to expense reimbursement,
               indemnification and contribution as are provided in Section 6
               hereof;

                    (xvi)  notify in writing each holder of Registrable
               Securities of any proposal by FBS and the Trust to amend or waive
               any provision of this Exchange and Registration Rights Agreement
               pursuant to Section 9(h) hereof and of any amendment or waiver
               effected pursuant thereto, each of which notices shall contain
               the text of the amendment or waiver proposed or effected, as the
               case may be;

                    (xvii) in the event that any broker-dealer registered under
               the Exchange Act shall underwrite any Registrable Securities or
               participate as a member of an underwriting syndicate or selling
               group or "assist in the distribution" (within the meaning of the
               Rules and By-Laws of NASD) thereof, whether as a holder of such
               Registrable Securities or as an

                                       12
<PAGE>
 
               underwriter, a placement or sales agent or a broker or dealer in
               respect thereof, or otherwise, assist such broker-dealer in
               complying with the requirements of such Rules and By-Laws,
               including, without limitation, by (A) if such Rules or By-Laws,
               including Schedule E thereto (or any successor thereto), shall so
               require, engaging a "qualified independent underwriter" (as
               defined in such Schedule (or any successor thereto)) to
               participate in the preparation of the registration statement
               relating to such Registrable Securities, to exercise usual
               standards of due diligence in respect thereto and, if any portion
               of the offering contemplated by such registration statement is an
               underwritten offering or is made through a placement or sales
               agent, to recommend the yield of such Registrable Securities, (B)
               indemnifying any such qualified independent underwriter to the
               extent of the indemnification of underwriters provided in Section
               6 hereof (or to such other customary extent as may be required by
               such underwriter), and (C) providing such information to such
               broker-dealer as may be required in order for such broker-dealer
               to comply with the requirements of the Rules and By-Laws of NASD;
               and

                    (xviii) comply with all applicable rules and regulations of
               the Commission, and make generally available to its holders of
               the Securities as soon as practicable but in any event not later
               than eighteen months after the effective date of such
               registration statement, an earnings statement of FBS and its
               subsidiaries complying with Section 11(a) of the Securities Act
               (including, at the option of FBS, Rule 158 thereunder).

     (e)  In the event that FBS and the Trust would be required, pursuant to
Section 3(d)(vi)(F) above, to notify the selling holders of Registrable
Securities, the placement or sales agent, if any, therefor and the managing
underwriters, if any, thereof, FBS and the Trust shall without delay prepare and
furnish to each such holder, to each placement or sales agent, if any, and to
each underwriter, if any, a reasonable number of copies of a prospectus
supplemented or amended so that, as thereafter delivered to purchasers of
Registrable Securities, such prospectus shall conform in all material respects
to the applicable requirements of the Securities Act and the Trust Indenture Act
and the rules and regulations of the Commission promulgated thereunder and shall
not contain an untrue statement of a material fact or omit to state a material
fact required to be stated therein or necessary to make the statements therein
not misleading in light of the circumstances then existing. Each holder of
Registrable Securities agrees that upon receipt of any notice from FBS and the
Trust pursuant to Section 3(d)(vi)(F) hereof, such holder shall forthwith
discontinue the disposition of Registrable Securities, pursuant to the
registration statement applicable to such Registrable Securities until such
holder shall have received copies of such amended or supplemented prospectus,
and if so directed by FBS and the Trust, such holder shall deliver to FBS (at
FBS's expense) all copies, other than permanent file copies, then in such
holder's possession of the prospectus covering such Registrable Securities at
the time of receipt of such notice.

     (f)  FBS and the Trust may require each holder of Registrable Securities as
to which any registration is being effected to furnish in writing to FBS and the
Trust such information

                                       13
<PAGE>
 
regarding such holder and such holder's intended method of distribution of such
Registrable Securities as FBS and the Trust may from time to time reasonably
request in writing, but only to the extent that such information is required in
order to comply with the Securities Act. Each such holder agrees to notify FBS
and the Trust as promptly as practicable of any inaccuracy or change in
information previously furnished by such holder to FBS and the Trust or of the
occurrence of any event in either case as a result of which any prospectus
relating to such registration contains or would contain an untrue statement of a
material fact regarding such holder or such holder's intended method of
distribution of such Registrable Securities or omits to state any material fact
regarding such holder or such holder's intended method of distribution of such
Registrable Securities required to be stated therein or necessary to make the
statements therein not misleading in light of the circumstances then existing,
and promptly to furnish to FBS and the Trust any additional information required
to correct and update any previously furnished information or required so that
such prospectus shall not contain, with respect to such holder or the
distribution of such Registrable Securities, an untrue statement of a material
fact or omit to state a material fact required to be stated therein or necessary
to make the statements therein not misleading in light of the circumstances then
existing. Each such holder shall comply with the provisions of the Securities
Act applicable to such holder with respect to the disposition by such holder of
Registrable Securities covered by such registration statement in accordance with
the intended methods of disposition by such holder set forth in such
registration statement.

     (g)  Until the expiration three years after the Issue Date, FBS will not,
and will not permit any of its "affiliates" (as defined in Rule 144 under the
Act) to, resell any of the Securities which constitute "restricted securities"
under Rule 144 that have been reacquired by any of them except pursuant to an
effective registration statement under the Act or any exemption therefrom;
provided, however, that, for purposes of this paragraph, "affiliates" shall not
include the Purchasers or any of their affiliates other than FBS and its
subsidiaries, officers, managers and directors.

     4.   Registration Expenses.

     If FBS and the Trust file a registration statement pursuant to Section 2(a)
or Section 2(b), the following provisions shall apply:

     FBS agrees to bear and to pay or cause to be paid promptly upon request
being made therefor all expenses incident to the performance by FBS and the
Trust or compliance with this Exchange and Registration Rights Agreement,
including, without limitation, (a) all Commission and any NASD registration and
filing fees and expenses, (b) all fees and expenses in connection with the
qualification of the Securities and the Guarantee for offering and sale under
the state securities and blue sky laws referred to in Section 3(d)(x) hereof,
including reasonable fees and disbursements of counsel in connection with such
qualifications, (c) all expenses relating to the preparation, printing,
distribution and reproduction of each registration statement required to be
filed hereunder, each prospectus included therein or prepared for distribution
pursuant hereto, each amendment or supplement to the foregoing, and the
certificates representing the Securities and all documents relating hereto, (d)
messenger and delivery expenses, (e) fees and expenses of the Debenture Trustee
under the Indenture, the Issuer Trustees under the Trust Agreement and the
Guarantee

                                       14
<PAGE>
 
Trustee under the Guarantee Agreement and of any escrow agent or custodian, (f)
internal expenses (including, without limitation, all salaries and expenses of
FBS's officers and employees performing legal or accounting duties), (g) fees,
disbursements and expenses of counsel and independent certified public
accountants of FBS and the Trust (including the expenses of any opinions or
"cold comfort" letters required by or incident to such performance and
compliance), (h) fees, disbursements and expenses of any "qualified independent
underwriter" engaged pursuant to Section 3(d)(xvii) hereof, (i) fees,
disbursements and expenses of one counsel for the holders of Registrable
Securities retained in connection with a Shelf Registration, as selected by the
holders of at least a majority in aggregate Liquidation Amount of the
Registrable Securities being registered, and fees, expenses and disbursements of
any other persons, including special experts, retained by FBS or the Trust in
connection with such registration (collectively, the "Registration Expenses").
To the extent that any Registration Expenses are incurred, assumed or paid by
any holder of Registrable Securities or any placement or sales agent therefor or
underwriter thereof, FBS shall reimburse such person for the full amount of the
Registration Expenses so incurred, assumed or paid promptly after receipt of a
written request therefor. Notwithstanding the foregoing, the holders of the
Registrable Securities being registered shall pay all agency or brokerage fees
and commissions and underwriting discounts and commissions attributable to the
sale of such Registrable Securities and the fees and disbursements of any
counsel or other advisors or experts retained by such holders (severally or
jointly), other than the counsel and experts specifically referred to above,
transfer taxes on resale of any of the Securities by such holders and any
advertising or solicitation expenses other than expenses specifically referred
to above incurred by or on behalf of such holders in connection with any offers
they may make.

     5.  Representations and Warranties.

     FBS and the Trust, jointly and severally, represent and warrant to, and
agree with, each Purchaser and each of the holders from time to time of
Registrable Securities that:

     (a)  Each registration statement covering the Exchange Securities, the
Exchange Guarantee and the Exchange Debentures or the Registrable Securities,
the Guarantee and the Debentures, as the case may be, and each prospectus
(including any preliminary or summary prospectus) contained therein or furnished
pursuant to Section 3(d)(ix) hereof and any further amendments or supplements to
any such registration statement or prospectus, when it becomes effective or is
filed with the Commission, as the case may be, and, in the case of an
underwritten offering of Registrable Securities, at the time of the closing
under the underwriting agreement relating thereto, will conform in all material
respects to the applicable requirements of the Securities Act and the Trust
Indenture Act, the rules and regulations of the Commission promulgated
thereunder and any such registration statement and any amendment thereto will
not contain an untrue statement of a material fact or omit to state a material
fact required to be stated therein or necessary to make the statements therein
not misleading and any such prospectus or any amendment or supplement thereto
will not contain an untrue statement of a material fact or omit to state a
material fact required to be stated therein or necessary to make the statements
therein not misleading in light of the circumstances then existing; and at all
times subsequent to the Effective Time of any such registration statement when a
prospectus would be required to be delivered under the

                                       15
<PAGE>
 
Securities Act, other than from (i) such time as a notice has been given to
holders of Registrable Securities pursuant to Section 3(c)(iii)(F) or Section
3(d)(vi)(F) hereof until (ii) such time as FBS and the Trust furnish an amended
or supplemented prospectus pursuant to Section 3(c)(iv) or Section 3(e) hereof,
as the case may be, each such registration statement, and each prospectus
(including any summary prospectus) contained therein or furnished pursuant to
Section 3(c) or Section 3(d)(ix) hereof, as then amended or supplemented, will
conform in all material respects to the applicable requirements of the
Securities Act and the Trust Indenture Act and the rules and regulations of the
Commission promulgated thereunder and will not contain an untrue statement of a
material fact or omit to state a material fact required to be stated therein or
necessary to make the statements therein not misleading in the light of the
circumstances then existing; provided, however, that this representation and
warranty shall not apply to any statements or omissions made in reliance upon
and in conformity with information furnished in writing to FBS and the Trust by
a holder of Registrable Securities or any placement or sales agent therefor or
underwriter thereof expressly for use therein.

     (b)  Any documents incorporated by reference in any prospectus referred to
in Section 5(a) hereof, when they become or became effective or are or were
filed with the Commission, as the case may be, will conform or conformed in all
material respects to the requirements of the Securities Act or the Exchange Act,
as applicable, and none of such documents will contain or contained an untrue
statement of a material fact or will omit or omitted to state a material fact
required to be stated therein or necessary to make the statements therein not
misleading; provided, however, that this representation and warranty shall not
apply to any statements or omissions made in reliance upon and in conformity
with information furnished in writing to FBS and the Trust by a holder of
Registrable Securities expressly for use therein.

     (c)  The representations and warranties of the Trust and FBS contained in
Section V of the Purchase Agreement are true and correct with the same force and
effect as though expressly made at and as of the date hereof.

     6.  Indemnification.

     (a)  Upon the registration of the Exchange Guarantee or the Guarantee, as
the case may be, pursuant to Section 2 hereof, and in consideration of the
agreements of the Purchasers contained herein, and as an inducement to the
Purchasers to purchase the Securities, the Trust and FBS, jointly and severally,
agree to indemnify and hold harmless, each of the holders of Registrable
Securities to which the Exchange Guarantee or the Guarantee relates, and each
person who participates as a placement or sales agent or as an underwriter in
any offering or sale of such Registrable Securities and each person, if any, who
controls, such holder, or such placement or sales agent, if any, or such
underwriter, if any, within the meaning of Section 15 of the Act or Section 20
of the Exchange Act (each an "Indemnified Person") as follows:

               (i)  against any and all loss, liability, claim, damage and
          expense whatsoever arising out of any untrue statement or alleged
          untrue statement of a material fact contained in any registration
          statement under which the

                                       16
<PAGE>
 
          Exchange Guarantee or the Guarantee were registered under the
          Securities Act, or any preliminary, final or summary prospectus
          contained therein as furnished by the Trust or FBS to any such holder,
          agent or underwriter (or any amendment or supplement thereto), or the
          omission or alleged omission therefrom of a material fact required to
          be stated therein or necessary to make the statements therein not
          misleading or arising out of any untrue statement or alleged untrue
          statement of a material fact contained in such registration statement
          or such preliminary, final or summary prospectus (or any amendment or
          supplement thereto) or the omission or alleged omission therefrom of a
          material fact necessary in order to make the statements therein, in
          light of the circumstances under which they were made, not misleading,
          unless such untrue statement or omission was made in reliance upon and
          in conformity with written information relating to such Indemnified
          Person furnished to the Trust and FBS by, or on behalf of, such
          Indemnified Person expressly for use in such registration statement or
          such preliminary, final or summary prospectus (or any amendment or
          supplement thereto);

               (ii)  against any and all loss, liability, claim, damage and
          expense whatsoever to the extent of the aggregate amount paid in
          settlement of any litigation, or investigation or proceeding by any
          governmental agency or body, commenced or threatened, or of any claim
          whatsoever based upon any such untrue statement or omission, or any
          such alleged untrue statement or omission (except as made in reliance
          upon and in conformity with information relating to such Indemnified
          Person furnished by, or on behalf of, such Indemnified Person as
          aforesaid), if such settlement is effected with the written consent of
          the Trust and FBS; and

               (iii) against any and all expense whatsoever (including the fees
          and disbursements of counsel chosen by such Indemnified Person),
          reasonably incurred in investigating, preparing or defending against
          any litigation, or investigation or proceeding by any governmental
          agency or body, commenced or threatened, or any claim whatsoever based
          upon any such untrue statement or omission, or any such alleged untrue
          statement or omission (except as made in reliance upon and in
          conformity with information relating to such Indemnified Person
          furnished by, or on behalf of, such Indemnified Person as aforesaid)
          to the extent that any such expense is not paid under (i) or (ii)
          above.

provided, however, that indemnification with respect to any prospectus shall not
inure to the benefit of any holder of Registrable Securities or Exchange
Securities from whom the Person asserting any loss, claim, liability, damage or
expense purchased such Securities, if a copy of the Prospectus (as then amended
or supplemented and furnished by FBS to such holder) was not sent or given by or
on behalf of such holder to such person if such is required by law at or prior
to the sale of such Registrable Securities or Exchange Securities, as the case
may be, and if the prospectus (as so amended and supplemented) would have cured
the defect giving rise to such loss, claim, liability, damage or expense.

                                       17
<PAGE>
 
     (b)  FBS may require, as a condition to including any Registrable
Securities in any registration statement filed pursuant to Section 2 hereof and
to entering into any placement or underwriting agreement with respect thereto,
that FBS shall have received an undertaking reasonably satisfactory to them from
the holder of such Registrable Securities and from each placement agent or
underwriter named in any such placement agreement or underwriting agreement,
severally and not jointly, to indemnify and hold harmless the Trust and FBS and
each person, if any, who controls the Trust or FBS within the meaning of Section
15 of the Securities Act or Section 20 of the Exchange Act against any and all
loss, liability, claim, damage and expense described in the indemnity contained
in subsection (a) of this Section, but only with respect to untrue statements or
omissions, or alleged untrue statements or omissions, made in any registration
statement under which such Registrable Securities were registered under the
Securities Act, or any preliminary, final or summary prospectus contained
therein as furnished by the Trust or FBS to any such holder, agent or
underwriter (or any amendment or supplement thereto), in reliance upon and in
conformity with written information relating to such holder, or such placement
or sales agent, if any, or such underwriter, if any, furnished to the Trust and
FBS by or on behalf of such holder, or such placement or sales agent, if any, or
such underwriter, if any, expressly for use in such registration statement or
such preliminary, final or summary prospectus (or any amendment or supplement
thereto).

     (c)  Each indemnified party shall give prompt notice to each indemnifying
party of any action commenced against it in respect of which indemnity may be
sought hereunder but failure to so notify an indemnifying party shall not
relieve it from any liability which it may have otherwise than on account of
this indemnity agreement. An indemnifying party may participate at its own
expense in the defense of such action. In no event shall the indemnifying
parties be liable for the fees and expenses of more than one counsel (in
addition to any local counsel) for all indemnified parties in connection with
any one action or separate but similar or related actions in the same
jurisdiction arising out of the same general allegations or circumstances;
provided, however, that when more than one of such holders, such placement or
sales agents, if any, or such underwriters, if any, is an indemnified party each
such holder, placement or sales agent or such underwriter, as the case may be,
shall be entitled to separate counsel (in addition to any local counsel) in each
such jurisdiction to the extent such holder, placement or sales agent or such
underwriter, as the case may be, may have interests conflicting with those of
the other holder, placement or sales agent or such underwriter, as the case may
be. No indemnifying party shall, without the prior written consent of the
indemnified party, effect any settlement of any pending or threatened proceeding
in respect of which any indemnified party is or could have been a party and
indemnity could have been sought hereunder by such indemnified party, unless
such settlement includes an unconditional release of such indemnified party from
all liability on claims that are the subject matter of such proceeding.

     In order to provide for just and equitable contribution in circumstances in
which the indemnity agreement provided for in this Section 6 is for any reason
held to be unavailable to such holders, such placement or sales agents, if any,
or such underwriters, if any, in accordance with its terms, the Trust, FBS and
such holders, such placement and sales agents, if any, and such underwriters, if
any, shall contribute to the aggregate losses, liabilities, claims, damages and
expenses of the nature contemplated by said indemnity agreement

                                       18
<PAGE>
 
incurred by the Trust, FBS and such holders, such placement and sales agents, if
any, and such underwriters, if any, in such proportions as is appropriate to
reflect the relative benefits received by the Trust and FBS on the one hand and
such holders, such placement and sales agents, if any, and such underwriters, if
any, on the other. The relative benefits received by the Trust and FBS on the
one hand and such holders, such placement and sales agents, if any, and such
underwriters, if any, on the other shall be deemed to be in such proportion
represented by the percentage that the total commissions and underwriting
discounts received by such holders, such placement and sales agents, if any, and
such underwriters, if any, to the date of such liability bears to the total
sales price (before deducting expenses) received by the Trust and such holders,
such placement and sales agents, if any, and such underwriters, if any, from the
sale of such Securities made to the date of such liability, and the Trust and
FBS are jointly and severally responsible for the balance. If, however, the
allocation provided by the immediately preceding sentence is not permitted by
applicable law or if such holders, such placement and sales agents, if any, and
such underwriters, if any, failed to give the notice required under this
subsection (c), then the Trust, FBS and such holders, such placement and sales
agents, if any, and such underwriters, if any, shall contribute to such
aggregate losses, liabilities, claims, damages and expenses in such proportion
as is appropriate to reflect not only such relative benefits but also the
relative fault of the Trust and FBS on the one hand and such holders, such
placement and sales agents, if any, and such underwriters, if any, on the other
in connection with the statements or omissions which resulted in such
liabilities, claims, damages and expenses, as well as any other relevant
equitable considerations. The relative fault shall be determined by reference
to, among other things, whether the untrue or alleged untrue statement of a
material fact or the omission or alleged omission to state a material fact
relates to information supplied by the Trust and FBS on the one hand or is
supplied by, or on behalf of, such holders, such placement or sales agents, if
any, and such underwriters, if any, on the other and the parties' relative
intent, knowledge, access to information and opportunity to correct or prevent
such statement or omission. The Trust, FBS and such holders, such placement or
sales agents, if any, and such underwriters, if any, agree that it would not be
just and equitable if contributions pursuant to this paragraph were determined
pro rata (even if such holders, such placement or sales agents, if any, and such
underwriters, if any, were treated as one entity for such purpose) or by any
other method of allocation which does not take account of the equitable
considerations referred to in this paragraph. Notwithstanding the provisions of
this paragraph, such holders, such placement or sales agents, if any, and such
underwriters, if any, shall not be required to contribute any amount in excess
of the amount by which the total price at which the Securities referred to in
the second sentence of this paragraph that were offered and sold to the public
through such holders, such placement or sales agents, if any, and such
underwriters, if any, exceeds the amount of any damages that such holders, such
placement or sales agents, if any, and such underwriters, if any, have otherwise
been required to pay by reason of such untrue or alleged untrue statement or
omission or alleged omission. No person guilty of fraudulent misrepresentation
(within the meaning of Section 11(f) of the Securities Act) shall be entitled
under this paragraph to contribution from any person who was not guilty of such
fraudulent misrepresentation. For purposes of this Section, each person, if any,
who controls any such holders, such placement or sales agents, if any, and such
underwriters, if any, within the meaning of Section 15 of the Securities Act or
Section 20 of the Exchange Act shall have the same rights to contribution as
such holders, such placement or sales agents, if any, and such underwriters, if
any, and each person, if any,

                                       19
<PAGE>
 
who controls the Trust or FBS within the meaning of Section 15 of the Securities
Act or Section 20 of the Exchange Act shall have the same rights to contribution
as the Trust or FBS.

     7.  Miscellaneous.

     (a)  No Inconsistent Agreements. Each of the Trust and FBS represents,
warrants, covenants and agrees that it has not granted, and shall not grant,
registration rights with respect to the Guarantee or any other securities which
would be inconsistent with the terms contained in this Exchange and Registration
Rights Agreement and that the Debenture Exchange and Registration Rights
Agreement and the Capital Securities Exchange and Registration Rights Agreement
should be construed to be consistent with the terms hereof.

     (b)  Specific Performance. The parties hereto acknowledge that there would
be no adequate remedy at law if any party fails to perform any of its
obligations hereunder and that each party may be irreparably harmed by any such
failure and accordingly agree that each party, in addition to any other remedy
to which it may be entitled at law or in equity, shall be entitled to compel
specific performance of the obligations of any other party under this Exchange
and Registration Rights Agreement in accordance with the terms and conditions of
this Exchange and Registration Rights Agreement, in any court of the United
States or any State thereof having jurisdiction.

     (c)  Notices. All notices, requests, claims, demands, waivers and other
communications hereunder shall be in writing and shall be deemed to have been
duly given when delivered by hand, if delivered personally or by courier, or
three days after being deposited in the mail (registered or certified mail,
postage prepaid, return receipt requested) as follows, if to FBS or the Trust,
to: First Bank System, Inc., First Bank Place, 601 Second Avenue South,
Minneapolis, Minnesota 55402, and if to a holder, to the address of such holder
set forth in the security register or other records of the Trust, or to such
other address as any party may have furnished to the others in writing in
accordance herewith, except that notices of change of address shall be effective
only upon receipt.

     (d)  Parties in Interest. All the terms and provisions of this Exchange and
Registration Rights Agreement shall be binding upon, shall inure to the benefit
of and shall be enforceable by the respective successors and assigns of the
parties hereto. In the event that any transferee of any holder of Registrable
Securities shall become a holder of Registrable Securities, in any manner,
whether by gift, bequest, purchase, operation of law or otherwise, such
transferee shall, without any further writing or action of any kind, be deemed a
party hereto for all purposes and such Registrable Securities shall be held
subject to all of the terms of this Exchange and Registration Rights Agreement,
and by taking and holding such Registrable Securities such transferee shall be
entitled to receive the benefits of and be conclusively deemed to have agreed to
be bound by and to perform all of the terms and provisions of this Exchange and
Registration Rights Agreement. If FBS shall so request, any such successor,
assign or transferee shall agree in writing to acquire and hold the Registrable
Securities subject to all of the terms hereof.

                                       20
<PAGE>
 
     (e)  Survival. The respective indemnities, agreements, representations,
warranties and each other provision set forth in this Exchange and Registration
Rights Agreement or made pursuant hereto shall remain in full force and effect
regardless of any investigation (or statement as to the results thereof) made by
or on behalf of any holder of Registrable Securities, any director, officer or
partner of such holder, any agent or underwriter or any director, officer or
partner thereof, or any controlling person of any of the foregoing, and shall
survive delivery of and payment for the Registrable Securities pursuant to the
Purchase Agreement and the transfer and registration of Registrable Securities
by such holder and the consummation of an Exchange Offer. In addition, the
respective indemnities, representations and warranties set forth herein shall
survive the termination hereof.

     (f)  LAW GOVERNING. THIS EXCHANGE AND REGISTRATION RIGHTS AGREEMENT SHALL
BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW
YORK.

     (g)  Headings. The descriptive headings of the several Sections and
paragraphs of this Exchange and Registration Rights Agreement are inserted for
convenience only, do not constitute a part of this Exchange and Registration
Rights Agreement and shall not affect in any way the meaning or interpretation
of this Exchange and Registration Rights Agreement.

     (h)  Entire Agreement; Amendments. This Exchange and Registration Rights
Agreement and the other agreements referred to herein or delivered pursuant
hereto which form a part hereof contain the entire understanding of the parties
with respect to its subject matter. This Exchange and Registration Rights
Agreement and such other agreements referred to herein supersede all prior
agreements and understandings between the parties with respect to its subject
matter. This Exchange and Registration Rights Agreement may be amended and the
observance of any term of this Exchange and Registration Rights Agreement may be
waived (either generally or in a particular instance and either retroactively or
prospectively) only by a written instrument duly executed by FBS, the Trust, and
the holders of at least 66-2/3 percent in aggregate principal amount of the
Registrable Securities at the time outstanding. Each holder of any Registrable
Securities at the time or thereafter outstanding shall be bound by any amendment
or waiver effected pursuant to this Section 7(h), whether or not any notice,
writing or marking indicating such amendment or waiver appears on such
Registrable Securities or is delivered to such holder.

     (i)  Inspection. For so long as this Exchange and Registration Rights
Agreement shall be in effect, this Exchange and Registration Rights Agreement
and a complete list of the names and addresses of all the registered holders of
Registrable Securities shall be made available for inspection and copying on any
business day by any holder of Registrable Securities at the offices of FBS at
the address thereof set forth in Section 9(c) above.

     (j)  Counterparts. This agreement may be executed by the parties in
counterparts, each of which shall be deemed to be an original, but all such
respective counterparts shall together constitute one and the same instrument.

                                       21
<PAGE>
 
     (k)  Termination.  Except for the respective indemnities, representations
and warranties set forth herein, this Agreement shall terminate when all the
Securities, Exchange Securities and Registrable Securities cease to be
outstanding.

                                       22
<PAGE>
 
This Agreement is hereby executed as of the day and year first above written.

                                       FIRST BANK SYSTEM, INC.

                                       By: /s/ Kenneth D. Nelson
                                         --------------------------------------
                                         Name:  Kenneth D. Nelson
                                         Title: Vice President

                                       FBS CAPITAL I

                                       By: /s/ Lee R. Mitau
                                         ---------------------------------------
                                         Administrative Agent

                                       GOLDMAN, SACHS & CO.

                                       As Representative of the Purchasers 
                                       Named in Schedule 1 to the Purchase
                                       Agreement

                                       By: /s/ Goldman, Sachs & Co.
                                          --------------------------------------
                                               (Goldman, Sachs & Co.)

                                       Acting severally, and not jointly and
                                       severally, on behalf of themselves and 
                                       each of the Purchasers named in Schedule
                                       I to the Purchase Agreement


<PAGE>
 
                                                                    EXHIBIT 4.13
                   EXCHANGE AND REGISTRATION RIGHTS AGREEMENT

EXCHANGE AND REGISTRATION RIGHTS AGREEMENT, dated November 26, 1996, by and
among FBS Capital I, a Delaware business trust (the "Trust"), First Bank System,
Inc., a Delaware corporation registered as a bank holding company under the Bank
Holding Company Act of 1956, as amended ("FBS") and Goldman, Sachs & Co., Morgan
Stanley & Co. Incorporated, Lehman Brothers Inc., Merrill Lynch, Pierce, Fenner
& Smith Incorporated, Dain Bosworth Incorporated and Piper Jaffray Inc.
(collectively, the "Purchasers") of the 8.09% Capital Securities of the Trust.

     1. Certain Definitions.  For purposes of this Exchange and Registration
Rights Agreement, the following terms shall have the following respective
meanings:

     (a) "Commission" means the Securities and Exchange Commission, or any other
federal agency at the time administering the Exchange Act or the Securities Act,
whichever is the relevant statute for the particular purpose.

     (b) "Capital Securities Exchange and Registration Rights Agreement" means
the Exchange and Registration Rights Agreement in respect of the Capital
Securities dated November 26, 1996 among FBS, the Trust and the Purchasers.

     (c) "Debentures" means the 8.09% Junior Subordinated Deferrable Interest
Debentures due November 15, 2026 of FBS, to be issued pursuant to the Indenture.

     (d) "Effective Time", in the case of (i) an Exchange Offer, means the date
on which the Commission declares the Exchange Offer registration statement
effective or on which such registration statement otherwise becomes effective
and (ii) a Shelf Registration, means the date on which the Commission declares
the Shelf Registration effective or on which the Shelf Registration otherwise
becomes effective.

     (e) "Exchange Act" means the Securities Exchange Act of 1934, or any
successor thereto, as amended from time to time.

     (f) "Exchange Debentures" has the meaning set forth in Section 2(a) hereof.

     (g) "Exchange Guarantee" has the meaning set forth in Section 2(a) hereof.

     (h) "Exchange Offer" has the meaning set forth in Section 2(a) hereof.

     (i) "Exchange Registration" has the meaning set forth in Section 3(c)
hereof.

     (j) "Exchange Securities" has the meaning set forth in Section 2(a) hereof.

     (k) "Guarantee" means the Guarantee of FBS with respect to the Securities,
to the extent set forth in the Guarantee Agreement.
<PAGE>
 
     (l) "Guarantee Agreement" means the Guarantee Agreement dated November 26,
1996 between FBS and the Wilmington Trust Company, a Delaware banking
corporation as Property Trustee of the Trust (together with its successors and
assigns "Property Trustee") for the benefit of the holders of the Securities.

     (m) "Guarantee Exchange and Registration Rights Agreement" means the
Exchange and Registration Rights Agreement in respect of the Guarantee dated
November 26, 1996 among FBS, the Trust and the Purchasers.

     (n) The term "holder" has the meaning set forth in the Capital Securities
Exchange and Registration Rights Agreement; provided however that if all the
Registrable Securities and all the Securities cease to be outstanding, then it
shall mean the Debentures.

     (o) "Indenture" means the Indenture dated as of November 15, 1996, between
FBS and Wilmington Trust Company, as Debenture Trustee, as supplemented by an
officer's certificate dated November 26, 1996, and as further amended or
supplemented from time to time.

     (p) "Issue Date" means November 26, 1996.

     (q) "Liquidation Amount" means the stated liquidation preference of the
Securities.

     (r) "New Guarantee Agreement" has the meaning set forth in the Guarantee
Exchange and Registration Rights Agreement.

     (s) The term "person" means a corporation, association, partnership,
organization, business, individual, government or political subdivision thereof
or governmental agency.

     (t) "Purchase Agreement" means the Purchase Agreement dated November 19,
1996, among FBS, the Trust and the Purchasers.

     (u) "Registrable Securities" has the meaning set forth in the Capital
Securities Exchange and Registration Rights Agreement; provided however that if
all the Registrable Securities and all the Securities cease to be outstanding,
then it shall mean the Debentures which have not been sold, directly or
indirectly, pursuant to an effective registration statement under the Securities
Act.

     (v) "Registration Default" has the meaning set forth in Section 2(c)
hereof.

     (w) "Registration Expenses" has the meaning set forth in Section 4 hereof.

     (x) "Resale Period" has the meaning set forth in the Capital Securities
Exchange and Registration Rights Agreements.

     (y) "Securities" means, collectively, the $300,000,000 aggregate
Liquidation Amount of the 8.09% Capital Securities, Liquidation Amount $1,000
per Capital Security, of the Trust to be issued and sold to the Purchasers, and
any securities issued in exchange 

                                       2
<PAGE>
 
therefor or in lieu thereof pursuant to the Trust Agreement; provided however
that if all the Registrable Securities and all the Securities cease to be
outstanding, then it shall mean the Debentures which have been registered under
the Securities Act.

     (z) "Securities Act" means the Securities Act of 1933, or any successor
thereto, as the same shall be amended from time to time.

     (aa) "Shelf Registration" has the meaning set forth in Section 2(b) hereof.

     (bb) "Special Interest" has the meaning set forth in Section 2(c) hereof.

     (cc) "Trust Agreement" means the Amended and Restated Trust Agreement dated
as of November 26, 1996 among FBS, as Depositor, Wilmington Trust Company, as
Property Trustee and Delaware Trustee, and the Administrative Agents named
therein.

     (dd) "Trust Indenture Act" means the Trust Indenture Act of 1939, or any
successor thereto, and the rules, regulations and forms promulgated thereunder,
all as amended from time to time.

     Unless the context otherwise requires, any reference herein to a "Section"
or "clause" refers to a Section or clause, as the case may be, of this Exchange
and Registration Rights Agreement, and the words "herein," "hereof" and
"hereunder" and other words of similar import refer to this Exchange and
Registration Rights Agreement as a whole and not to any particular Section or
other subdivision

     2. Registration Under the Securities Act.

     (a) If FBS and the Trust file a registration statement pursuant to Section
2(a) of the Capital Securities Exchange and Registration Rights Agreement, then
FBS and the Trust agree, jointly and severally, to include in such registration
statement an offer to exchange (the "Exchange Offer") all of the Debentures for
a like aggregate principal amount of a new series of junior subordinated
deferrable interest debentures of FBS which are substantially identical to the
Debentures (and which are entitled to the benefits of the Indenture which will
be qualified under the Trust Indenture Act) except that they have been
registered pursuant to an effective registration statement under the Securities
Act and such new debentures will not contain provisions for Special Interest or
provisions restricting transfer in the absence of registration under the
Securities Act (such new debentures hereinafter called "Exchange Debentures").
Such registration statement shall also relate to, and the consummation of the
Exchange Offer shall be conditioned upon the consummation of, an offer to
exchange the Securities for substantially identical capital securities of the
Trust pursuant to the Capital Securities Exchange and Registration Rights
Agreement (the "Exchange Securities") and to an offer to exchange the Guarantee
for a substantially identical guarantee of FBS pursuant to the Guarantee
Exchange and Registration Rights Agreement (the "Exchange Guarantee"). FBS and
the Trust agree, jointly and severally, to use their reasonable best efforts to
cause such registration statement to become effective under the Securities Act
as soon as practicable thereafter. The Exchange Offer will be registered under
the Act on the appropriate form. The Exchange Offer shall be deemed to have been
completed upon the 

                                       3
<PAGE>
 
completion of the exchange of the Exchange Debentures for all the Debentures
pursuant to the Exchange Offer.

     (b) If (i) FBS and the Trust file a "shelf" registration statement pursuant
to Section 2(b) of the Capital Securities Exchange and Registration Rights
Agreement without also filing a registration statement pursuant to Section 2(a)
thereof or (ii) none of the Securities or the Registrable Securities is
outstanding and the Exchange Offer has not been effected, then in the case of
clause (i), such "shelf" registration statement shall provide for the
registration of the Debentures and, in the case of clause (ii) none of the
Securities or the Registrable Securities is outstanding and the Exchange Offer
has not been effected, the FBS shall file under the Securities Act, as soon as
practicable, a "shelf" registration statement providing for the registration of,
and the sale on a continuous or delayed basis by the holders of, all of the
Registrable Securities, pursuant to Rule 415 under the Securities Act and/or any
similar rule that may be adopted by the Commission (in each case, the "Shelf
Registration"). In the case of clause (i) only, the Shelf Registration shall
also provide for the registration of the Securities pursuant to the Capital
Securities Exchange and Registration Rights Agreement and for the registration
of the Guarantee pursuant to the Guarantee Exchange and Registration Rights
Agreement. FBS and, if applicable, the Trust agree, jointly and severally, to
use their reasonable best efforts to cause the Shelf Registration to become or
be declared effective and to keep such Shelf Registration continuously effective
for a period ending on the earlier of (A) the third anniversary of the Issue
Date or (B) such time as there are no longer any Registrable Securities
outstanding. FBS and, if applicable, the Trust further agree, jointly and
severally, to supplement or make amendments to the Shelf Registration, as and
when required by the rules, regulations or instructions applicable to the
registration form used by FBS and, if applicable, the Trust for such Shelf
Registration or by the Securities Act or rules and regulations thereunder for
shelf registration, and FBS and, if applicable, the Trust agree, jointly and
severally, to furnish to the holders of the Registrable Securities copies of any
such supplement or amendment prior to its being used and/or filed with the
Commission.

     (c) In the event that (i) FBS and, if applicable, the Trust have not filed
the registration statement relating to the Exchange Offer (or, if applicable,
the Shelf Registration) on or before the 150th day after the Issue Date, or (ii)
such registration statement (or, if applicable, the Shelf Registration) has not
become effective or been declared effective by the Commission on or before the
180th day after the Issue Date, or (iii) any of the Exchange Offer, the exchange
offers contemplated by the Capital Securities Exchange and Registration Rights
Agreement and the exchange offer contemplated by the Guarantee Exchange and
Registration Rights Agreement has not been completed within 210 days after the
Issue Date (if the Exchange Offer is then required to be made) or (iv) any
registration statement required by Section 2(a) or 2(b) is filed and declared
effective but shall thereafter cease to be effective (except as specifically
permitted herein) without being succeeded immediately by an additional
registration statement filed and declared effective (each such event referred to
in clauses (i) through (iv), a "Registration Default"), then interest will
accrue (in addition to the stated interest rate on the Debentures) at the rate
of 0.25% per annum on the principal amount of the Debentures for the period from
the occurrence of the Registration Default until such time as no Registration
Default is in effect. Such additional interest (the "Special Interest") will be
payable in cash semi-annually in 

                                       4
<PAGE>
 
arrears on each May 15 and November 15 in accordance with, and subject to the
deferral provisions of, the Indenture. Special Interest, if any, will be
computed on the basis of a 365 or 366 day year, as the case may be, and the
number of days actually elapsed.

     (d) Any reference herein to a registration statement shall be deemed to
include any document incorporated therein by reference as of the applicable
Effective Time and any reference herein to any post effective amendment to a
registration statement shall be deemed to include any document incorporated
therein by reference as of a time after such Effective Time.

     3. Registration Procedures.

     If FBS and, if applicable, the Trust file a registration statement pursuant
to Section 2(a) or Section 2(b), the following provisions shall apply:

     (a) At or before the Effective Time of the Exchange Offer or the Shelf
Registration, as the case may be, FBS shall qualify the Indenture, the New
Guarantee Agreement, if applicable, and the Trust Agreement, if applicable,
under the Trust Indenture Act.

     (b) In the event that such qualification would require the appointment of a
new trustee under any of the Indenture, the New Guarantee Agreement or the Trust
Agreement, such new trustee shall be appointed thereunder pursuant to the
applicable provisions thereof.

     (c) In connection with the joint and several obligations of FBS and the
Trust with respect to the registration of the Exchange Securities, the Exchange
Guarantee and the Exchange Debentures, as contemplated by Section 2(a) (the
"Exchange Registration"), if applicable, FBS and the Trust shall, as soon as
reasonably possible (or as otherwise specified):

               (i)    prepare and file with the Commission, as soon as
          practicable but no later than 150 days after the Issue Date, a
          registration statement with respect to the Exchange Registration on
          any form which may be utilized by FBS and the Trust and which shall
          permit the Exchange Offer and resales of Exchange Securities by
          broker-dealers during the Resale Period to be effected as contemplated
          by Section 2(a) hereof, and use its reasonable best efforts to cause
          such registration statement to become effective as soon as practicable
          thereafter;

               (ii)   as soon as practicable prepare and file with the
          Commission such amendments and supplements to such registration
          statement and the prospectus included therein as may be necessary to
          effect and maintain the effectiveness of such registration statement
          for the periods and purposes contemplated in Section 2(a) hereof and
          as may be required by the applicable rules and regulations of the
          Commission and the instructions applicable to the form of such
          registration statement, and promptly provide each broker-dealer
          holding Exchange Securities with such number of copies of the
          prospectus included therein (as then amended or supplemented), in

                                       5
<PAGE>
 
          conformity in all material respects with the requirements of the
          Securities Act and the Trust Indenture Act and the rules and
          regulations of the Commission promulgated thereunder, as such broker-
          dealer reasonably may request prior to the expiration of the Resale
          Period, for use in connection with resales of Exchange Securities;

               (iii)  promptly notify each broker-dealer that has requested
          or received copies of the prospectus included in such registration
          statement, and confirm such advice in writing, (A) when such
          registration statement or the prospectus included therein or any
          prospectus amendment or supplement or post effective amendment has
          been filed, and, with respect to such registration statement or any
          post effective amendment, when the same has become effective, (B) of
          the receipt of any comments by the Commission and by the Blue Sky or
          securities commissioner or regulator of any state with respect thereto
          or any request by the Commission for amendments or supplements to such
          registration statement or prospectus or for additional information,
          (C) of the issuance by the Commission of any stop order suspending the
          effectiveness of such registration statement or the initiation or
          threatening of any proceedings for that purpose, (D) if at any time
          the joint and several representations and warranties of FBS and the
          Trust contemplated by Section 5 cease to be true and correct in all
          material respects, (E) of the receipt by either FBS or the Trust of
          any notification with respect to the suspension of the qualification
          of the Exchange Securities and the Exchange Guarantee for sale in any
          United States jurisdiction or the initiation or threatening of any
          proceeding for such purpose, or (F) at any time during the Resale
          Period when a prospectus is required to be delivered under the
          Securities Act, that such registration statement, prospectus,
          prospectus amendment or supplement or post effective amendment does
          not conform in all material respects to the applicable requirements of
          the Securities Act and the Trust Indenture Act and the rules and
          regulations of the Commission promulgated thereunder or contains an
          untrue statement of a material fact or omits to state a material fact
          required to be stated therein or necessary to make the statements
          therein not misleading in light of the circumstances then existing;

               (iv)   in the event that FBS and the Trust would be required,
          pursuant to Section 3(c)(iii)(F) above, to notify any broker-dealers
          holding Exchange Securities, without delay prepare and furnish to each
          such holder a reasonable number of copies of a prospectus supplemented
          or amended so that, as thereafter delivered to purchasers of such
          Exchange Securities during the Resale Period, such prospectus shall
          conform in all material respects to the applicable requirements of the
          Securities Act and the Trust Indenture Act and the rules and
          regulations of the Commission promulgated thereunder and shall not
          contain an untrue statement of a material fact or omit to state a
          material fact required to be stated therein or necessary to make the
          statements therein not misleading in light of the circumstances then
          existing;

                                       6
<PAGE>
 
               (v)    use their best efforts to obtain the withdrawal of any
          order suspending the effectiveness of such registration statement or
          any post effective amendment thereto at the earliest practicable date;

               (vi)   use their reasonable best efforts to (A) register or
          qualify the Exchange Securities and the Exchange Guarantee under the
          securities laws or blue sky laws of such jurisdiction as are
          contemplated by Section 2(a) no later than the commencement of the
          Exchange Offer, (B) keep such registrations or qualifications in
          effect and comply with such laws so as to permit the continuance of
          offers, sales and dealings therein in such jurisdictions until the
          expiration of the Resale Period and (C) take any and all other actions
          as may be reasonably necessary or advisable to enable each broker-
          dealer holding Exchange Securities to consummate the disposition
          thereof in such jurisdictions; provided, however, that neither FBS nor
          the Trust shall be required for any such purpose to (1) qualify to do
          business in any jurisdiction wherein it would not otherwise be
          required to qualify but for the requirements of this Section 3(g)(vi),
          (2) consent to general service of process in any such jurisdiction or
          (3) in the case of FBS, make any changes to its charter or by-laws or
          any agreement between it and its stockholders or in the case of the
          Trust, make any changes to the Trust Agreement;

               (vii)  use their reasonable best efforts to obtain the consent or
          approval of each United States governmental agency or authority,
          whether federal, state or local, which may be required to effect the
          Exchange Registration, the Exchange Offer and the offering and sale of
          Exchange Securities by broker-dealers during the Resale Period;

               (viii) provide a CUSIP number for all Exchange Securities, not
          later than the applicable Effective Time; and

               (ix)   comply with all applicable rules and regulations of the
          Commission, and make generally available to all holders of Securities
          as soon as practicable but no later than eighteen months after the
          Effective Time, an earnings statement of FBS and its subsidiaries
          complying with Section 11 (a) of the Securities Act (including, at the
          option of FBS, Rule 158 thereunder).

     (d) In connection with the joint and several obligations of FBS and the
Trust with respect to the Shelf Registration, if applicable, FBS and, if
applicable, the Trust shall use their reasonable best efforts to cause the Shelf
Registration to become effective to permit the sale of the Registrable
Securities by the holders thereof in accordance with the intended method or
methods of distribution thereof described in the Shelf Registration. In
connection therewith, FBS and, if applicable, the Trust shall as soon as
reasonably possible (or as otherwise specified):

                                       7
<PAGE>
 
               (i)     prepare and file with the Commission, as soon as
          practicable, a registration statement with respect to the Shelf
          Registration on any form which may be utilized by FBS and, if
          applicable, the Trust and which shall permit the disposition of the
          Registrable Securities in accordance with the intended method or
          methods thereof, as specified in writing to FBS and, if applicable,
          the Trust by the holders of the Registrable Securities and use their
          reasonable best efforts to cause such registration statement to become
          effective as soon as practicable thereafter;

               (ii)    as soon as practicable, prepare and file with the
          Commission such amendments and supplements to such registration
          statement and the prospectus included therein as may be necessary to
          effect and maintain the effectiveness of such registration statement
          for the period specified in Section 2(b) hereof and as may be required
          by the applicable rules and regulations of the Commission and the
          instructions applicable to the form of such registration statement and
          furnish to the holders of the Registrable Securities copies of any
          such supplement or amendment simultaneously with or prior to its being
          used or filed with the Commission;

               (iii)   comply with the provisions of the Securities Act
          applicable to FBS or, if applicable, the Trust in connection with the
          disposition of all of the Registrable Securities covered by such
          registration statement in accordance with the intended methods of
          disposition by the holders thereof, set forth in such registration
          statement;

               (iv)    provide (A) the holders of the Registrable Securities to
          be included in such registration statement and not more than one
          counsel for all the holders of such Registrable Securities, (B) the
          underwriters (which term, for purposes of this Exchange and
          Registration Rights Agreement, shall include a person deemed to be an
          underwriter within the meaning of Section 2(11) of the Securities
          Act), if any, thereof, (C) the sales or placement agent, if any,
          therefor and (D) one counsel for such underwriters or agents, if any,
          reasonable opportunity to participate in the preparation of such
          registration statement, each prospectus included therein or filed with
          the Commission, and each amendment or supplement thereto;

               (v)     for a reasonable period prior to the filing of such
          registration statement, and throughout the period specified in Section
          2(b), make available at reasonable times at FBS's principal place of
          business or such other reasonable place for inspection by the persons
          referred to in Section 3(d)(iv) who shall certify to FBS and, if
          applicable, the Trust that they have a current intention to sell the
          Registrable Securities pursuant to the Shelf Registration such
          financial and other information and books and records of FBS and, if
          applicable, the Trust, and cause the officers, employees, counsel and
          independent certified public accountants of FBS and, if applicable,
          the Trust to respond to such inquiries, as shall be reasonably
          necessary, in the judgment of the respective counsel referred to in
          such 

                                       8
<PAGE>
 
          Section, to conduct a reasonable investigation within the meaning
          of Section 11 of the Securities Act; provided, however, that each such
          party shall be required to maintain in confidence and not to disclose
          to any other person any information or records reasonably designated
          by FBS as being confidential, until such time as (A) such information
          becomes a matter of public record (whether by virtue of its inclusion
          in such registration statement or otherwise, except by disclosure by
          such party in breach of this Agreement), or (B) such person shall be
          required so to disclose such information pursuant to the subpoena or
          order of any court or other governmental agency or body having
          jurisdiction over the matter (subject to, and only to the extent
          required by, the requirements of such order, and only after such
          person shall have given FBS prompt prior written notice of such
          requirement);

               (vi)    promptly notify the selling holders of Registrable
          Securities, the sales or placement agent, if any, therefor and the
          managing underwriter or underwriters, if any, thereof and confirm such
          advice in writing, (A) when such registration statement or the
          prospectus included therein or any prospectus amendment or supplement
          or post-effective amendment has been filed, and, with respect to such
          registration statement or any post-effective amendment, when the same
          has become effective, (B) of any comments by the Commission and by the
          Blue Sky or securities commissioner or regulator of any state with
          respect thereto or any request by the Commission for amendments or
          supplements to such registration statement or prospectus or for
          additional information, (C) of the issuance by the Commission of any
          stop order suspending the effectiveness of such registration statement
          or the initiation or threatening of any proceedings for that purpose,
          (D) if at any time the joint and several representations and
          warranties of FBS and, if applicable, the Trust contemplated by
          Section 3(d)(xv) or Section 5 cease to be true and correct in all
          material respects, (E) of the receipt by either FBS or the Trust of
          any notification with respect to the suspension of the qualification
          of the Registrable Securities and, if applicable, the Guarantee, for
          sale in any jurisdiction or the initiation or threatening of any
          proceeding for such purpose, or (F) at any time when a prospectus is
          required to be delivered under the Securities Act, that such
          registration statement, prospectus, prospectus amendment or supplement
          or post-effective amendment, or any document incorporated by reference
          in any of the foregoing, does not conform in all material respects to
          the applicable requirements of the Securities Act and the Trust
          Indenture Act and the rules and regulations of the Commission
          promulgated thereunder or contains an untrue statement of a material
          fact or omits to state any material fact required to be stated therein
          or necessary to make the statements therein not misleading in light of
          the circumstances then existing;

               (vii)   use their best efforts to obtain the withdrawal of any
          order suspending the effectiveness of such registration statement or
          any post-effective amendment thereto at the earliest practicable date;

                                       9
<PAGE>
 
               (viii)  if requested by any managing underwriter or underwriters,
          any placement or sales agent or any holder or counsel for the holders
          of Registrable Securities, promptly incorporate in a prospectus
          supplement or post-effective amendment such information as is required
          by the applicable rules and regulations of the Commission and as such
          managing underwriter or underwriters, such agent or such holder
          specifies should be included therein relating to the terms of the sale
          of such Registrable Securities, including, without limitation,
          information with respect to the Liquidation Amount or the principal
          amount, as the case may be, of Registrable Securities being sold by
          any holder or agent or to any underwriters, the name and description
          of such holder, agent or underwriter, the offering price of such
          Registrable Securities and any discount, commission or other
          compensation payable in respect thereof, the purchase price being paid
          therefor by such underwriters and with respect to any other terms of
          the offering of the Registrable Securities, to be sold by such holder
          or agent or to such underwriters; and make all required filings of
          such prospectus supplement or post-effective amendment promptly after
          notification of the matters to be incorporated in such prospectus
          supplement or post-effective amendment;

               (ix)    furnish to each holder of Registrable Securities, each
          placement or sales agent, if any, therefor, each underwriter, if any,
          thereof and the respective counsel referred to in Section 3(d)(iv) an
          executed copy of such registration statement, each such amendment and
          supplement thereto (in each case including all exhibits thereto and
          documents incorporated by reference therein) and such number of copies
          of such registration statement (excluding exhibits thereto and
          documents incorporated by reference therein unless specifically so
          requested by such holder, agent or underwriter, as the case may be)
          and of the prospectus included in such registration statement
          (including each preliminary prospectus and any summary prospectus), in
          conformity with the requirements of the Securities Act and the Trust
          Indenture Act and the rules and regulations of the Commission
          promulgated thereunder, and such other documents, as such holder,
          agent, if any, and underwriter, if any, may reasonably request in
          order to facilitate the offering and disposition of the Registrable
          Securities owned by such holder, offered or sold by such agent or
          underwritten by such underwriter and to permit such holder, agent and
          underwriter to satisfy the prospectus delivery requirements of the
          Securities Act; and each of FBS and, if applicable, the Trust hereby
          consents to the use of such prospectus (including such preliminary and
          summary prospectus) and any amendment or supplement thereto by each
          such holder and by any such agent and underwriter, in each case in the
          form most recently provided to such party by FBS and the Trust, in
          connection with the offering and sale of the Registrable Securities
          covered by the prospectus (including such preliminary and summary
          prospectus) or any supplement or amendment thereto;

                                       10
<PAGE>
 
               (x)     use their reasonable best efforts to (A) register or
          qualify the Registrable Securities to be included in such registration
          statement and, if applicable, the Guarantee under such securities laws
          or blue sky laws of such jurisdictions as any holder of such
          Registrable Securities and each placement or sales agent, if any,
          therefor and underwriter, if any, thereof shall reasonably request,
          (B) keep such registrations or qualifications in effect and comply
          with such laws so as to permit the continuance of offers, sales and
          dealings therein in such jurisdictions during the period the Shelf
          Registration is required to remain effective under Section 2(b) above
          and for so long as may be necessary to enable any such holder, agent
          or underwriter to complete its distribution of Securities pursuant to
          such registration statement and (C) take any and all other actions as
          may be reasonably necessary or advisable to enable each such holder,
          agent, if any, and underwriter, if any, to consummate the disposition
          in such jurisdictions of Registrable Securities; provided, however,
          that neither FBS nor, if applicable, the Trust shall be required for
          any such purpose to (1) qualify to do business in any jurisdiction
          wherein it would not otherwise be required to qualify but for the
          requirements of this Section 3(d)(x), (2) consent to general service
          of process in any such jurisdiction, (3) in the case of FBS, make any
          changes to its charter or by-laws or any agreement between it and its
          shareholders or, if applicable, in the case of the Trust, make any
          changes to the Trust Agreement;

               (xi)    use their reasonable best efforts to obtain the consent
          or approval of each governmental agency or authority, whether federal,
          state or local, which may be required to effect the Shelf Registration
          or the offering or sale in connection therewith or to enable the
          selling holder or holders to offer, or to consummate the disposition
          of, their Registrable Securities;

               (xii)   cooperate with the holders of the Registrable Securities
          and the managing underwriters, if any, to facilitate the timely
          preparation and delivery of certificates representing Registrable
          Securities to be sold, which certificates shall be printed,
          lithographed or engraved, or produced by any combination of such
          methods, and which shall not bear any restrictive legends; and, in the
          case of an underwritten offering, enable such Registrable Securities
          to be in such denominations and registered in such names as the
          managing underwriters may request at least two business days prior to
          any sale of the Registrable Securities;

               (xiii)  provide a CUSIP number for all Registrable Securities,
          not later than the applicable Effective Time;

               (xiv)   enter into not more than one underwriting agreement,
          engagement letter, agency agreement, "best efforts" underwriting
          agreement or similar agreement, as appropriate, including (without
          limitation) 

                                       11
<PAGE>
 
          provisions relating to indemnification and contribution substantially
          the same as those set forth in Section 6 hereof, and take such other
          actions in connection therewith as any holders of Registrable
          Securities aggregating at least 25% in aggregate Liquidation Amount,
          or in aggregate principal amount, as the case may be, of the
          Registrable Securities at the time outstanding shall reasonably
          request in order to expedite or facilitate the disposition of such
          Registrable Securities; provided, that FBS and, if applicable, the
          Trust shall not be required to (i) enter into any such agreement more
          than once with respect to all of the Registrable Securities and may
          delay entering into such agreement until the consummation of any
          underwritten public offering which FBS and, if applicable, the Trust
          shall have then undertaken or (ii) enter into any engagement letter,
          agency agreement, "best effort" underwriting agreement or similar
          agreements whatsoever with respect to the Registrable Securities, and
          provided, further that FBS and, if applicable, the Trust shall not be
          obligated to enter into any such agreement with a broker-dealer which
          results in the need for a "qualified independent underwriter" (within
          the meaning of the Rules of Fair Practice and the By-Laws of the
          National Association of Securities Dealers, Inc. ("NASD") or any
          successor thereto, as amended from time to time (the "Rules and By-
          Laws of NASD"));

               (xv)    whether or not an agreement of the type referred to in
          Section (3)(d)(xiv) hereof is entered into and whether or not any
          portion of the offering contemplated by such registration statement is
          an underwritten offering or is made through a placement or sales agent
          or any other entity, (A) make such representations and warranties to
          the holders of such Registrable Securities and the placement or sales
          agent, if any, therefor and the underwriters, if any, thereof
          substantially the same as those set forth in Section V of the Purchase
          Agreement and such other representations and warranties as are
          customarily made with respect to the offering of debt securities
          pursuant to any appropriate agreement or to a registration statement
          on the applicable form under the Securities Act; (B) obtain an opinion
          or opinions of counsel to FBS and, if applicable, the Trust
          substantially the same as the opinions provided for in Section IV of
          the Purchase Agreement with such additions, substitutions or deletions
          of such matters as are customarily covered in opinions for an
          underwritten offering, addressed to such holder or holders and the
          placement or sales agent, if any, therefor and the underwriters, if
          any, thereof and dated the effective date of such registration
          statement (and if such registration statement contemplates an
          underwritten offering of a part or all of the Registrable Securities,
          dated the date of the closing under the underwriting agreement
          relating thereto) (it being agreed that the matters to be covered by
          such opinion shall also include, without limitation, the absence of
          governmental approvals required to be obtained in connection with the
          Shelf Registration, the offering and sale of the Registrable
          Securities, this Exchange and Registration Rights Agreement or any
          agreement of the type referred to in Section (3)(c)(xiv) hereof,
          except such approvals as may be required under state securities or

                                       12
<PAGE>
 
          blue sky laws; and the compliance as to form of such registration
          statement and any documents incorporated by reference therein and of
          the Indenture, the Guarantee Agreement, if applicable, and the Trust
          Agreement, if applicable, with the requirements of the Securities Act
          and the Trust Indenture Act and the rules and regulations of the
          Commission promulgated thereunder, respectively); and, such opinion
          shall also state that such counsel has no reason to believe that, as
          of the date of the opinion and of the registration statement or most
          recent post-effective amendment thereto, as the case may be, such
          registration statement and the prospectus included therein, as then
          amended or supplemented, and the documents incorporated by reference
          therein (in each case other than the financial statements and other
          financial information contained therein) contains or contained an
          untrue statement of a material fact or omits or omitted to state
          therein a material fact necessary to make the statements therein not
          misleading (in the case of such documents, in the light of the
          circumstances existing at the time that such documents were filed with
          the Commission under the Exchange Act)); (C) obtain a "cold comfort"
          letter or letters from the independent certified public accountants of
          FBS and, if applicable, the Trust addressed to the selling holders of
          Registrable Securities, the placement or sales agent, if any, therefor
          and the underwriters, if any, thereof, dated (i) the effective date of
          such registration statement and (ii) the effective date of any
          prospectus supplement to the prospectus included in such registration
          statement or post-effective amendment to such registration statement
          substantially in the form of Exhibit F to the Purchase Agreement; (D)
          deliver such other documents and certificates, including officers'
          certificates, as may be reasonably requested by any holders of at
          least 25 % in aggregate Liquidation Amount, or in aggregate principal
          amount, as the case may be, of the Registrable Securities at the time
          outstanding or the placement or sales agent, if any, therefor and the
          managing underwriters, if any, thereof to evidence the accuracy of the
          representations and warranties made pursuant to clause (A) above or
          those contained in Section 5(a) hereof and the compliance with or
          satisfaction of any agreements or conditions contained in the
          underwriting agreement or other agreement entered into by FBS and, if
          applicable, the Trust; and (E) undertake such obligations relating to
          expense reimbursement, indemnification and contribution as are
          provided in Section 6 hereof;

               (xvi)   notify in writing each holder of Registrable Securities
          of any proposal by FBS and the Trust to amend or waive any provision
          of this Exchange and Registration Rights Agreement pursuant to Section
          9(h) hereof and of any amendment or waiver effected pursuant thereto,
          each of which notices shall contain the text of the amendment or
          waiver proposed or effected, as the case may be;

               (xvii)  in the event that any broker-dealer registered under
          the Exchange Act shall underwrite any Registrable Securities or
          participate as a member of an underwriting syndicate or selling group
          or "assist in the 

                                       13
<PAGE>
 
          distribution" (within the meaning of the Rules and
          By-Laws of NASD) thereof, whether as a holder of such Registrable
          Securities or as an underwriter, a placement or sales agent or a
          broker or dealer in respect thereof, or otherwise, assist such broker-
          dealer in complying with the requirements of such Rules and By-Laws,
          including, without limitation, by (A) if such Rules or By-Laws,
          including Schedule E thereto (or any successor thereto), shall so
          require, engaging a "qualified independent underwriter" (as defined in
          such Schedule (or any successor thereto)) to participate in the
          preparation of the registration statement relating to such Registrable
          Securities, to exercise usual standards of due diligence in respect
          thereto and, if any portion of the offering contemplated by such
          registration statement is an underwritten offering or is made through
          a placement or sales agent, to recommend the yield of such Registrable
          Securities, (B) indemnifying any such qualified independent
          underwriter to the extent of the indemnification of underwriters
          provided in Section 6 hereof (or to such other customary extent as may
          be required by such underwriter), and (C) providing such information
          to such broker-dealer as may be required in order for such broker-
          dealer to comply with the requirements of the Rules and By-Laws of
          NASD; and

               (xviii) comply with all applicable rules and regulations of the
          Commission, and make generally available to its holders of the
          Securities as soon as practicable but in any event not later than
          eighteen months after the effective date of such registration
          statement, an earnings statement of FBS and its subsidiaries complying
          with Section 11(a) of the Securities Act (including, at the option of
          FBS, Rule 158 thereunder).

     (e) In the event that FBS and, if applicable, the Trust would be required,
pursuant to Section 3(d)(vi)(F) above, to notify the selling holders of
Registrable Securities, the placement or sales agent, if any, therefor and the
managing underwriters, if any, thereof, FBS and, if applicable, the Trust shall
without delay prepare and furnish to each such holder, to each placement or
sales agent, if any, and to each underwriter, if any, a reasonable number of
copies of a prospectus supplemented or amended so that, as thereafter delivered
to purchasers of Registrable Securities, such prospectus shall conform in all
material respects to the applicable requirements of the Securities Act and the
Trust Indenture Act and the rules and regulations of the Commission promulgated
thereunder and shall not contain an untrue statement of a material fact or omit
to state a material fact required to be stated therein or necessary to make the
statements therein not misleading in light of the circumstances then existing.
Each holder of Registrable Securities agrees that upon receipt of any notice
from FBS and, if applicable, the Trust pursuant to Section 3(d)(vi)(F) hereof,
such holder shall forthwith discontinue the disposition of Registrable
Securities, pursuant to the registration statement applicable to such
Registrable Securities until such holder shall have received copies of such
amended or supplemented prospectus, and if so directed by FBS and, if
applicable, the Trust, such holder shall deliver to FBS (at FBS's expense) all
copies, other than permanent file copies, then in such holder's possession of
the prospectus covering such Registrable Securities at the time of receipt of
such notice.

                                       14
<PAGE>
 
     (f) FBS and, if applicable, the Trust may require each holder of
Registrable Securities as to which any registration is being effected to furnish
in writing to FBS and, if applicable, the Trust such information regarding such
holder and such holder's intended method of distribution of such Registrable
Securities as FBS and the Trust may from time to time reasonably request in
writing, but only to the extent that such information is required in order to
comply with the Securities Act. Each such holder agrees to notify FBS and, if
applicable, the Trust as promptly as practicable of any inaccuracy or change in
information previously furnished by such holder to FBS and, if applicable, the
Trust or of the occurrence of any event in either case as a result of which any
prospectus relating to such registration contains or would contain an untrue
statement of a material fact regarding such holder or such holder's intended
method of distribution of such Registrable Securities or omits to state any
material fact regarding such holder or such holder's intended method of
distribution of such Registrable Securities required to be stated therein or
necessary to make the statements therein not misleading in light of the
circumstances then existing, and promptly to furnish to FBS and, if applicable,
the Trust any additional information required to correct and update any
previously furnished information or required so that such prospectus shall not
contain, with respect to such holder or the distribution of such Registrable
Securities, an untrue statement of a material fact or omit to state a material
fact required to be stated therein or necessary to make the statements therein
not misleading in light of the circumstances then existing. Each such holder
shall comply with the provisions of the Securities Act applicable to such holder
with respect to the disposition by such holder of Registrable Securities covered
by such registration statement in accordance with the intended methods of
disposition by such holder set forth in such registration statement.

     (g) Until the expiration three years after the Issue Date, FBS will not,
and will not permit any of its "affiliates" (as defined in Rule 144 under the
Act) to, resell any of the Securities which constitute "restricted securities"
under Rule 144 that have been reacquired by any of them except pursuant to an
effective registration statement under the Act or any exemption therefrom;
provided, however, that, for purposes of this paragraph, "affiliates" shall not
include the Purchasers or any of their affiliates other than FBS and its
subsidiaries, officers, managers and directors.

     4. Registration Expenses.

     If FBS and, if applicable, the Trust file a registration statement pursuant
to Section 2(a) or Section 2(b), the following provisions shall apply:

     FBS agrees to bear and to pay or cause to be paid promptly upon request
being made therefor all expenses incident to the performance by FBS and, if
applicable, the Trust or compliance with this Exchange and Registration Rights
Agreement, including, without limitation, (a) all Commission and any NASD
registration and filing fees and expenses, (b) all fees and expenses in
connection with the qualification of the Securities and, if applicable, the
Guarantee for offering and sale under the state securities and blue sky laws
referred to in Section 3(d)(x) hereof, including reasonable fees and
disbursements of counsel in connection with such qualifications, (c) all
expenses relating to the preparation, printing, distribution and reproduction of
each registration statement required to be filed hereunder, each prospectus
included therein or prepared for distribution pursuant hereto, each amendment or

                                       15
<PAGE>
 
supplement to the foregoing, and the certificates representing the Securities
and all documents relating hereto, (d) messenger and delivery expenses, (e) fees
and expenses of the Debenture Trustee under the Indenture, the Issuer Trustees
under the Trust Agreement and, if applicable, the Guarantee Trustee under the
Guarantee Agreement, if applicable, and of any escrow agent or custodian, (f)
internal expenses (including, without limitation, all salaries and expenses of
FBS's officers and employees performing legal or accounting duties), (g) fees,
disbursements and expenses of counsel and independent certified public
accountants of FBS and, if applicable, the Trust (including the expenses of any
opinions or "cold comfort" letters required by or incident to such performance
and compliance), (h) fees, disbursements and expenses of any "qualified
independent underwriter" engaged pursuant to Section 3(d)(xvii) hereof, (i)
fees, disbursements and expenses of one counsel for the holders of Registrable
Securities retained in connection with a Shelf Registration, as selected by the
holders of at least a majority in aggregate Liquidation Amount, or the aggregate
principal amount, as the case may be, of the Registrable Securities being
registered, and fees, expenses and disbursements of any other persons, including
special experts, retained by FBS or, if applicable, the Trust in connection with
such registration (collectively, the "Registration Expenses"). To the extent
that any Registration Expenses are incurred, assumed or paid by any holder of
Registrable Securities or any placement or sales agent therefor or underwriter
thereof, FBS shall reimburse such person for the full amount of the Registration
Expenses so incurred, assumed or paid promptly after receipt of a written
request therefor. Notwithstanding the foregoing, the holders of the Registrable
Securities being registered shall pay all agency or brokerage fees and
commissions and underwriting discounts and commissions attributable to the sale
of such Registrable Securities and the fees and disbursements of any counsel or
other advisors or experts retained by such holders (severally or jointly), other
than the counsel and experts specifically referred to above, transfer taxes on
resale of any of the Securities by such holders and any advertising or
solicitation expenses other than expenses specifically referred to above
incurred by or on behalf of such holders in connection with any offers they may
make.

     5. Representations and Warranties.

     FBS and, if applicable, the Trust, jointly and severally, represent and
warrant to, and agree with, each Purchaser and each of the holders from time to
time of Registrable Securities that:

     (a) Each registration statement covering Registrable Securities, the
Guarantee, if applicable, and the Debentures and each prospectus (including any
preliminary or summary prospectus) contained therein or furnished pursuant to
Section 3(d)(ix) hereof and any further amendments or supplements to any such
registration statement or prospectus, when it becomes effective or is filed with
the Commission, as the case may be, and, in the case of an underwritten offering
of Registrable Securities, at the time of the closing under the underwriting
agreement relating thereto, will conform in all material respects to the
applicable requirements of the Securities Act and the Trust Indenture Act, the
rules and regulations of the Commission promulgated thereunder and any such
registration statement and any amendment thereto will not contain an untrue
statement of a material fact or omit to state a material fact required to be
stated therein or necessary to make the statements therein not misleading and
any such prospectus or any amendment or supplement thereto will not 

                                       16
<PAGE>
 
contain an untrue statement of a material fact or omit to state a material fact
required to be stated therein or necessary to make the statements therein not
misleading in light of the circumstances then existing; and at all times
subsequent to the Effective Time of any such registration statement when a
prospectus would be required to be delivered under the Securities Act, other
than from (i) such time as a notice has been given to holders of Registrable
Securities pursuant to Section 3(c)(iii)(F) or Section 3(d)(vi)(F) hereof until
(ii) such time as FBS and, if applicable, the Trust furnish an amended or
supplemented prospectus pursuant to Section 3(c)(iv) or Section 3(e) hereof, as
the case may be, each such registration statement, and each prospectus
(including any summary prospectus) contained therein or furnished pursuant to
Section 3(c) or Section 3(d)(ix) hereof, as then amended or supplemented, will
conform in all material respects to the applicable requirements of the
Securities Act and the Trust Indenture Act and the rules and regulations of the
Commission promulgated thereunder and will not contain an untrue statement of a
material fact or omit to state a material fact required to be stated therein or
necessary to make the statements therein not misleading in the light of the
circumstances then existing; provided, however, that this representation and
warranty shall not apply to any statements or omissions made in reliance upon
and in conformity with information furnished in writing to FBS and, if
applicable, the Trust by a holder of Registrable Securities or any placement or
sales agent therefor or underwriter thereof expressly for use therein.

     (b) Any documents incorporated by reference in any prospectus referred to
in Section 5(a) hereof, when they become or became effective or are or were
filed with the Commission, as the case may be, will conform or conformed in all
material respects to the requirements of the Securities Act or the Exchange Act,
as applicable, and none of such documents will contain or contained an untrue
statement of a material fact or will omit or omitted to state a material fact
required to be stated therein or necessary to make the statements therein not
misleading; provided, however, that this representation and warranty shall not
apply to any statements or omissions made in reliance upon and in conformity
with information furnished in writing to FBS and the Trust, if applicable, by a
holder of Registrable Securities expressly for use therein.

     (c) The representations and warranties of the Trust, if applicable, and FBS
contained in Section V of the Purchase Agreement are true and correct with the
same force and effect as though expressly made at and as of the date hereof.

     6. Indemnification.

     (a) Upon the registration of the Registrable Securities pursuant to Section
2 hereof, and in consideration of the agreements of the Purchasers contained
herein, and as an inducement to the Purchasers to purchase the Securities, the
Trust and FBS, jointly and severally, agree to indemnify and hold harmless each
of the holders of Registrable Securities to be included in such registration,
and each person who participates as a placement or sales agent or as an
underwriter in any offering or sale of such Registrable Securities and each
person, if any, who controls such holder, or such placement or sales agent, if
any, or such underwriter, if any, within the meaning of Section 15 of the Act or
Section 20 of the Exchange Act (each an "Indemnified Person") as follows:

                                       17
<PAGE>
 
               (i)   against any and all loss, liability, claim, damage and
       expense whatsoever arising out of any untrue statement or alleged untrue
       statement of a material fact contained in any registration statement
       under which such Registrable Securities were registered under the
       Securities Act, or any preliminary, final or summary prospectus contained
       therein as furnished by the Trust or FBS to any such holder, agent or
       underwriter (or any amendment or supplement thereto), or the omission or
       alleged omission therefrom of a material fact required to be stated
       therein or necessary to make the statements therein not misleading or
       arising out of any untrue statement or alleged untrue statement of a
       material fact contained in such registration statement or such
       preliminary, final or summary prospectus (or any amendment or supplement
       thereto) or the omission or alleged omission therefrom of a material fact
       necessary in order to make the statements therein, in light of the
       circumstances under which they were made, not misleading, unless such
       untrue statement or omission was made in reliance upon and in conformity
       with written information relating to such Indemnified Person furnished to
       the Trust and FBS by, or on behalf of, such Indemnified Person expressly
       for use in such registration statement or such preliminary, final or
       summary prospectus (or any amendment or supplement thereto);

               (ii)  against any and all loss, liability, claim, damage and
       expense whatsoever to the extent of the aggregate amount paid in
       settlement of any litigation, or investigation or proceeding by any
       governmental agency or body, commenced or threatened, or of any claim
       whatsoever based upon any such untrue statement or omission, or any such
       alleged untrue statement or omission (except as made in reliance upon and
       in conformity with information relating to such Indemnified Person
       furnished by, or on behalf of, such Indemnified Person as aforesaid), if
       such settlement is effected with the written consent of the Trust and
       FBS; and

               (iii) against any and all expense whatsoever (including the fees
       and disbursements of counsel chosen by such Indemnified Person),
       reasonably incurred in investigating, preparing or defending against any
       litigation, or investigation or proceeding by any governmental agency or
       body, commenced or threatened, or any claim whatsoever based upon any
       such untrue statement or omission, or any such alleged untrue statement
       or omission (except as made in reliance upon and in conformity with
       information relating to such Indemnified Person furnished by, or on
       behalf of, such Indemnified Person as aforesaid) to the extent that any
       such expense is not paid under (i) or (ii) above.

provided, however, that indemnification with respect to any prospectus shall not
inure to the benefit of any holder of Registrable Securities or Exchange
Securities from whom the Person asserting any loss, claim, liability, damage or
expense purchased such Securities, if a copy of the Prospectus (as then amended
or supplemented and furnished by FBS to such holder) was not sent or given by or
on behalf of such person or to such person if such is required by law

                                       18
<PAGE>
 
at or prior to the sale of such Registrable Securities or Exchange Securities,
as the case may be, and if the prospectus (as so amended and supplemented) would
have cured the defect giving rise to such loss, claim, liability, damage or
expense.

     (b) FBS may require, as a condition to including any Registrable Securities
in any registration statement filed pursuant to Section 2 hereof and to entering
into any placement or underwriting agreement with respect thereto, that FBS
shall have received an undertaking reasonably satisfactory to them from the
holder of such Registrable Securities and from each placement agent or
underwriter named in any such placement agreement or underwriting agreement,
severally and not jointly, to indemnify and hold harmless the Trust and FBS and
each person, if any, who controls the Trust or FBS within the meaning of Section
15 of the Securities Act or Section 20 of the Exchange Act against any and all
loss, liability, claim, damage and expense described in the indemnity contained
in subsection (a) of this Section, but only with respect to untrue statements or
omissions, or alleged untrue statements or omissions, made in any registration
statement under which such Registrable Securities were registered under the
Securities Act, or any preliminary, final or summary prospectus contained
therein as furnished by the Trust or FBS to any such holder, agent or
underwriter (or any amendment or supplement thereto), in reliance upon and in
conformity with written information relating to such holder, or such placement
or sales agent, if any, or such underwriter, if any, furnished to the Trust and
FBS by or on behalf of such holder, or such placement or sales agent, if any, or
such underwriter, if any, expressly for use in such registration statement or
such preliminary, final or summary prospectus (or any amendment or supplement
thereto).

     (c) Each indemnified party shall give prompt notice to each indemnifying
party of any action commenced against it in respect of which indemnity may be
sought hereunder but failure to so notify an indemnifying party shall not
relieve it from any liability which it may have otherwise than on account of
this indemnity agreement. An indemnifying party may participate at its own
expense in the defense of such action. In no event shall the indemnifying
parties be liable for the fees and expenses of more than one counsel (in
addition to any local counsel) for all indemnified parties in connection with
any one action or separate but similar or related actions in the same
jurisdiction arising out of the same general allegations or circumstances;
provided, however, that when more than one of such holders, such placement or
sales agents, if any, or such underwriters, if any, is an indemnified party each
such holder, placement or sales agent or such underwriter, as the case may be,
shall be entitled to separate counsel (in addition to any local counsel) in each
such jurisdiction to the extent such holder, placement or sales agent or such
underwriter, as the case may be, may have interests conflicting with those of
the other holder, placement or sales agent or such underwriter, as the case may
be. No indemnifying party shall, without the prior written consent of the
indemnified party, effect any settlement of any pending or threatened proceeding
in respect of which any indemnified party is or could have been a party and
indemnity could have been sought hereunder by such indemnified party, unless
such settlement includes an unconditional release of such indemnified party from
all liability on claims that are the subject matter of such proceeding.

     In order to provide for just and equitable contribution in circumstances in
which the indemnity agreement provided for in this Section 6 is for any reason
held to be unavailable

                                       19
<PAGE>
 
to such holders, such placement or sales agents, if any, or such underwriters,
if any, in accordance with its terms, the Trust, FBS and such holders, such
placement and sales agents, if any, and such underwriters, if any, shall
contribute to the aggregate losses, liabilities, claims, damages and expenses of
the nature contemplated by said indemnity agreement incurred by the Trust, FBS
and such holders, such placement and sales agents, if any, and such
underwriters, if any, in such proportions as is appropriate to reflect the
relative benefits received by the Trust and FBS on the one hand and such
holders, such placement and sales agents, if any, and such underwriters, if any,
on the other. The relative benefits received by the Trust and FBS on the one
hand and such holders, such placement and sales agents, if any, and such
underwriters, if any, on the other shall be deemed to be in such proportion
represented by the percentage that the total commissions and underwriting
discounts received by such holders, such placement and sales agents, if any, and
such underwriters, if any, to the date of such liability bears to the total
sales price (before deducting expenses) received by the Trust and such holders,
such placement and sales agents, if any, and such underwriters, if any, from the
sale of such Securities made to the date of such liability, and the Trust and
FBS are jointly and severally responsible for the balance. If, however, the
allocation provided by the immediately preceding sentence is not permitted by
applicable law or if such holders, such placement and sales agents, if any, and
such underwriters, if any, failed to give the notice required under this
subsection (c), then the Trust, FBS and such holders, such placement and sales
agents, if any, and such underwriters, if any, shall contribute to such
aggregate losses, liabilities, claims, damages and expenses in such proportion
as is appropriate to reflect not only such relative benefits but also the
relative fault of the Trust and FBS on the one hand and such holders, such
placement and sales agents, if any, and such underwriters, if any, on the other
in connection with the statements or omissions which resulted in such
liabilities, claims, damages and expenses, as well as any other relevant
equitable considerations. The relative fault shall be determined by reference
to, among other things, whether the untrue or alleged untrue statement of a
material fact or the omission or alleged omission to state a material fact
relates to information supplied by the Trust and FBS on the one hand or is
supplied by, or on behalf of, such holders, such placement or sales agents, if
any, and such underwriters, if any, on the other and the parties' relative
intent, knowledge, access to information and opportunity to correct or prevent
such statement or omission. The Trust, FBS and such holders, such placement or
sales agents, if any, and such underwriters, if any, agree that it would not be
just and equitable if contributions pursuant to this paragraph were determined
pro rata (even if such holders, such placement or sales agents, if any, and such
underwriters, if any, were treated as one entity for such purpose) or by any
other method of allocation which does not take account of the equitable
considerations referred to in this paragraph. Notwithstanding the provisions of
this paragraph, such holders, such placement or sales agents, if any, and such
underwriters, if any, shall not be required to contribute any amount in excess
of the amount by which the total price at which the Securities referred to in
the second sentence of this paragraph that were offered and sold to the public
through such holders, such placement or sales agents, if any, and such
underwriters, if any, exceeds the amount of any damages that such holders, such
placement or sales agents, if any, and such underwriters, if any, have otherwise
been required to pay by reason of such untrue or alleged untrue statement or
omission or alleged omission. No person guilty of fraudulent misrepresentation
(within the meaning of Section 11(f) of the Act) shall be entitled under this
paragraph to contribution from any person who was not guilty of such fraudulent
misrepresentation. For purposes of this Section, each 

                                       20
<PAGE>
 
person, if any, who controls any such holders, such placement or sales agents,
if any, and such underwriters, if any, within the meaning of Section 15 of the
Act or Section 20 of the Exchange Act shall have the same rights to contribution
as such holders, such placement or sales agents, if any, and such underwriters,
if any, and each person, if any, who controls the Trust or FBS within the
meaning of Section 15 of the Act or Section 20 of the Exchange Act shall have
the same rights to contribution as the Trust or FBS.

     7. Underwritten Offerings.

     (a) Selection of Underwriters. If any of the Registrable Securities covered
by the Shelf Registration are to be sold pursuant to an underwritten offering,
the managing underwriter or underwriters thereof shall be designated by the
holders of at least a majority in aggregate Liquidation Amount, or aggregate
principal amount, as the case may be, of the Registrable Securities to be
included in such offering, provided that such designated managing underwriter or
underwriters is or are reasonably acceptable to the Trust, if applicable, and
FBS.

     (b) Participation by Holders. Each holder of Registrable Securities hereby
agrees with each other such holder that no such holder may participate in any
underwritten offering hereunder unless such holder (i) agrees to sell such
holder's Registrable Securities on the basis provided in any underwriting
arrangements approved by the persons entitled hereunder to approve such
arrangements and (ii) completes and executes all questionnaires, powers of
attorney, indemnities, underwriting agreements and other documents reasonably
required under the terms of such underwriting arrangements.

     (c) Consolidated Earnings Statements. In the event of an underwritten
offering, FBS agrees to make generally available to holders of Securities as
soon as practicable, but in any event not later than eighteen months after the
effective date of the applicable registration statement (as defined in Rule
158(c) under the Securities Act), a consolidated earnings statement of FBS
(which need not be audited) complying with Section 11 (a) of the Act and the
rules and regulations of the Commission thereunder (including, at the option of
FBS, Rule 158 under the Securities Act)

     8. Rule 144.

     FBS covenants to the holders of Registrable Securities that to the extent
it shall be required to do so under the Exchange Act, FBS shall timely file the
reports required to be filed by it under the Exchange Act or the Securities Act
(including, but not limited to, the reports under Section 13 and 15(d) of the
Exchange Act referred to in subparagraph (c)(1) of Rule 144 adopted by the
Commission under the Securities Act) and the rules and regulations adopted by
the Commission thereunder, and shall take such further action as any holder of
Registrable Securities may reasonably request, all to the extent required from
time to time to make Rule 144 available to such holder for the sale of
Registrable Securities without registration under the Securities Act within the
limitations of the exemption provided by Rule 144 under the Securities Act, as
such Rule may be amended from time to time, or any similar or successor rule or
regulation hereafter adopted by the Commission. Upon the request of any holder
of Registrable Securities in connection with that holder's sale pursuant 

                                       21
<PAGE>
 
to Rule 144, FBS shall deliver to such holder a written statement as to whether
it has complied with such requirements.

     9. Miscellaneous.

     (a) No Inconsistent Agreements.  Each of the Trust and FBS represents,
warrants, covenants and agrees that it has not granted, and shall not grant,
registration rights with respect to Registrable Securities or any other
securities which would be inconsistent with the terms contained in this Exchange
and Registration Rights Agreement, the Capital Securities Exchange and
Registration Rights Agreement and the Guarantee Exchange and Registration Rights
Agreement should be construed to be consistent with the terms hereof.

     (b) Specific Performance. The parties hereto acknowledge that there would
be no adequate remedy at law if any party fails to perform any of its
obligations hereunder and that each party may be irreparably harmed by any such
failure and accordingly agree that each party, in addition to any other remedy
to which it may be entitled at law or in equity, shall be entitled to compel
specific performance of the obligations of any other party under this Exchange
and Registration Rights Agreement in accordance with the terms and conditions of
this Exchange and Registration Rights Agreement, in any court of the United
States or any State thereof having jurisdiction.

     (c) Notices. All notices, requests, claims, demands, waivers and other
communications hereunder shall be in writing and shall be deemed to have been
duly given when delivered by hand, if delivered personally or by courier, or
three days after being deposited in the mail (registered or certified mail,
postage prepaid, return receipt requested) as follows:  if to the Trust or to
FBS, then to First Bank System, Inc., First Bank Place, 601 Second Avenue South,
Minneapolis, Minnesota 55402, and if to a holder, to the address of such holder
set forth in the security register or other records of the Trust or of the
Debenture Trustee under the Indenture, as the case may be, or to such other
address as any party may have furnished to the others in writing in accordance
herewith, except that notices of change of address shall be effective only upon
receipt.

     (d) Parties in Interest. All the terms and provisions of this Exchange and
Registration Rights Agreement shall be binding upon, shall inure to the benefit
of and shall be enforceable by the respective successors and assigns of the
parties hereto. In the event that any transferee of any holder of Registrable
Securities shall become a holder of Registrable Securities, in any manner,
whether by gift, bequest, purchase, operation of law or otherwise, such
transferee shall, without any further writing or action of any kind, be deemed a
party hereto for all purposes and such Registrable Securities shall be held
subject to all of the terms of this Exchange and Registration Rights Agreement,
and by taking and holding such Registrable Securities such transferee shall be
entitled to receive the benefits of and be conclusively deemed to have agreed to
be bound by and to perform all of the terms and provisions of this Exchange and
Registration Rights Agreement. If FBS shall so request, any such successor,
assign or transferee shall agree in writing to acquire and hold the Registrable
Securities subject to all of the terms hereof.

                                       22
<PAGE>
 
     (e) Survival. The respective indemnities, agreements, representations,
warranties and each other provision set forth in this Exchange and Registration
Rights Agreement or made pursuant hereto shall remain in full force and effect
regardless of any investigation (or statement as to the results thereof) made by
or on behalf of any holder of Registrable Securities, any director, officer or
partner of such holder, any agent or underwriter or any director, officer or
partner thereof, or any controlling person of any of the foregoing, and shall
survive delivery of and payment for the Registrable Securities and the transfer
and registration of Registrable Securities by such holder and/or the
consummation of an Exchange Offer.

     (f) LAW GOVERNING. THIS EXCHANGE AND REGISTRATION RIGHTS AGREEMENT SHALL BE
GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK.

     (g) Headings. The descriptive headings of the several Sections and
paragraphs of this Exchange and Registration Rights Agreement are inserted for
convenience only, do not constitute a part of this Exchange and Registration
Rights Agreement and shall not affect in any way the meaning or interpretation
of this Exchange and Registration Rights Agreement.

     (h) Entire Agreement; Amendments. This Exchange and Registration Rights
Agreement and the other agreements referred to herein or delivered pursuant
hereto which form a part hereof contain the entire understanding of the parties
with respect to its subject matter. This Exchange and Registration Rights
Agreement and such other agreements referred to herein supersede all prior
agreements and understandings between the parties with respect to its subject
matter. This Exchange and Registration Rights Agreement may be amended and the
observance of any term of this Exchange and Registration Rights Agreement may be
waived (either generally or in a particular instance and either retroactively or
prospectively) only by a written instrument duly executed by FBS, the Trust and
the holders of at least 66-2/3 percent in aggregate Liquidation Amount or
principal amount, as the case may be, of the Registrable Securities at the time
outstanding. Each holder of any Registrable Securities at the time or thereafter
outstanding shall be bound by any amendment or waiver effected pursuant to this
Section 9(h), whether or not any notice, writing or marking indicating such
amendment or waiver appears on such Registrable Securities or is delivered to
such holder.

     (i) Inspection. For so long as this Exchange and Registration Rights
Agreement shall be in effect, this Exchange and Registration Rights Agreement
and a complete list of the names and addresses of all the registered holders of
Registrable Securities shall be made available for inspection and copying on any
business day by any holder of Registrable Securities at the offices of FBS at
the address thereof set forth in Section 9(c) above.

     (j) Counterparts. This agreement may be executed by the parties in
counterparts, each of which shall be deemed to be an original, but all such
respective counterparts shall together constitute one and the same instrument.

                                       23
<PAGE>

This Agreement is hereby executed as of the day and year first above written.

                                       FIRST BANK SYSTEM, INC.

                                       By: /s/ Kenneth D. Nelson
                                         --------------------------------------
                                         Name:  Kenneth D. Nelson
                                         Title: Vice President

                                       FBS CAPITAL I

                                       By: /s/ Lee R. Mitau
                                         ---------------------------------------
                                         Administrative Agent

                                       GOLDMAN, SACHS & CO.
                                               
                                       As Representative of the Purchasers 
                                       Named in Schedule 1 to the Purchase
                                       Agreement

                                       By: /s/ Goldman, Sachs & Co.
                                          --------------------------------------
                                               (Goldman, Sachs & Co.)

                                       Acting severally, and not jointly and
                                       severally, on behalf of themselves and
                                       each of the Purchasers named in Schedule
                                       I to the Purchase Agreement


<PAGE>
 
                                                                     EXHIBIT 5.1



                       [Dorsey & Whitney LLP letterhead]


The Board of Directors
First Bank System, Inc.
601 Second Avenue South
Minneapolis, Minnesota  55401

          Re:  First Bank System, Inc.
               Registration Statement on Form S-4
               File No. 333-16991
 
Ladies and Gentlemen:

          We have acted as counsel to First Bank System, Inc., a Delaware
corporation (the "Company") and Depositor of FBS Capital I, a Delaware business
trust (the "Trust"), in connection with a Registration Statement on Form S-4
(the "Registration Statement") relating to (i) the proposed issuance by the
Trust of $300,000,000 aggregate Liquidation Amount of the Trust's 8.09% Capital
Securities due November, 15, 2026 (the "New Capital Securities") registered
under the Securities Act of 1933, as amended (the "Securities Act"), in exchange
for up to $300,000,000 aggregate Liquidation Amount of the Trust's outstanding
8.09% Capital Securities due November 15, 2026 (the "Old Capital Securities");
(ii) the proposed issuance by the Company to the Trust of $309,279,000 aggregate
principal amount of the Company's 8.09% Junior Subordinated Debentures (the "New
Junior Subordinated Debentures") registered under the Securities Act, in
exchange for up to $309,279,000 aggregate principal of the Company's outstanding
8.09% Junior Subordinated Debentures (the "Old Junior Subordinated Debentures");
and (iii) the Company's guarantee (the "New Guarantee"), which guarantees the
payment of Distributions and payments on liquidation or redemption of the New
Capital Securities, registered under the Securities Act, in exchange for the
guarantee (the "Old Guarantee") which guarantees the payment of Distributions
and payments on liquidation or redemption of the Old Capital Securities. The New
Capital Securities are issuable under an Amended and Restated Trust Agreement
dated as of November 26, 1996 (the "Trust Agreement") between the Company, as
Depositor, Wilmington Trust Company, as Delaware Trustee and Property Trustee,
and the Administrative Agents named therein; the New Junior Subordinated
Debentures are issuable under an Indenture dated as of November 15, 1996 (the
"Indenture") between the Company and Wilmington Trust Company, as Debenture
Trustee; and the New Guarantee is issuable under the Guarantee Agreement dated
as of November 26, 1996 (the "Guarantee Agreement") between the Company and
Wilmington Trust Company, as Guarantee Trustee.

          We have examined such documents, including resolutions adopted by the
Board of Directors of the Company on November 16, 1996 (the "Resolutions"), and
have reviewed such questions of law as we have considered necessary and
appropriate for the purposes of our opinions set forth below. In rendering our
opinions, we have assumed the authenticity of all documents submitted to us as
originals, the genuineness of all signatures and the conformity to authentic
originals of all documents submitted to us as copies. We have also assumed the
legal capacity for all purposes relevant hereto of all natural persons and, with
respect to all parties to agreements or instruments relevant hereto other than
the Company and the Trust, that such parties had the requisite power and
authority (corporate or otherwise) to execute, deliver and perform such
agreements or instruments, that such agreements or instruments have been duly
authorized by all requisite action (corporate or otherwise), executed and
delivered by such parties and that such agreements or instruments are the valid,
binding and enforceable obligations of such parties. As to questions of fact
material to our opinions, we have relied upon certificates of officers of the
Company and the Trust and of public officials. Capitalized terms
<PAGE>

The Board of Directors
First Bank System, Inc.
December 20, 1996
Page 2
 
used herein and not otherwise defined herein shall have the meanings assigned to
them in the Trust Agreement, the Indenture and the Guarantee Agreement, as
applicable.

          Based on the foregoing, we are of the opinion that:

          (1) The New Junior Subordinated Debentures have been duly authorized
by all requisite corporate action and, when executed and authenticated as
specified in the Indenture and delivered against surrender and cancellation of a
like amount of Old Junior Subordinated Debentures in the manner described in the
Registration Statement, the New Junior Subordinated Debentures will constitute
valid and binding obligations of the Company, enforceable in accordance with
their terms.

          (2) The New Guarantee has been duly authorized by all requisite
corporate action and, when executed as specified in the Guarantee Agreement and
delivered against surrender and cancellation of the Old Guarantee in the manner
described in the Registration Statement, the New Guarantee will constitute the
valid and binding obligation of the Company, enforceable in accordance with its
terms.

          The opinions set forth above are subject to the following
qualifications and exceptions:


          (a) Our opinions in paragraphs (1) and (2) above are subject to the
     effect of any applicable bankruptcy, insolvency, reorganization, moratorium
     or other similar law of general application affecting creditors' rights.

          (b) Our opinions in paragraphs (1) and (2) above are subject to the
     effect of general principles of equity, including (without limitation)
     concepts of materiality, reasonableness, good faith and fair dealing, and
     other similar doctrines affecting the enforceability of agreements
     generally (regardless of whether considered in a proceeding in equity or at
     law).

          (c) Minnesota Statutes (S) 290.371, Subd. 4, provides that any
     corporation required to file a Notice of Business Activities Report does
     not have a cause of action upon which it may bring suit under Minnesota law
     unless the corporation has filed a Notice of Business Activities Report and
     provides that the use of the courts of the State of Minnesota for all
     contracts 
<PAGE>
The Board of Directors
First Bank System, Inc.
December 20, 1996
Page 3
 
     executed and all causes of action that arose before the end of any period
     for which a corporation failed to file a required report is precluded.
     Insofar as our opinion may relate to the valid, binding and enforceable
     character of any agreement under Minnesota law or in a Minnesota court, we
     have assumed that any party seeking to enforce such agreement has at all
     times been, and will continue at all times to be, exempt from the
     requirement of filing a Notice of Business Activities Report or, if not
     exempt, has duly filed, and will continue to duly file, all Notice of
     Business Activities Reports.


          Our opinions expressed above are limited to the laws of the States of
Minnesota and New York and the federal laws of the United States of America.

          We hereby consent to your filing of this opinion as an exhibit to the
Registration Statement, and to the reference to our firm under the caption
"Validity of the New Securities" contained in the Prospectus included
therein.

Dated:  December 20, 1996

                                    Very truly yours,

                                    /s/ Dorsey & Whitney LLP

                                    DORSEY & WHITNEY LLP

CFS

<PAGE>
 
                                                                     EXHIBIT 5.2
                    [Richards, Layton & Finger Letterhead]
                               December 20, 1996






FBS Capital I
c/o First Bank Systems, Inc.
First Bank Place
601 Second Avenue South
Minneapolis, Minnesota 55402-4302

             Re:   FBS Capital I
                   -------------


Ladies and Gentlemen:

             We have acted as special Delaware counsel for FBS Capital I, a 
Delaware business trust (the "Trust"), in connection with the matters set forth 
herein.  At your request, this opinion is being furnished to you.

             For purposes of giving the opinions hereinafter set forth, our 
examination of documents has been limited to the examination of originals or 
copies of the following:

             (a)   The Certificate of Trust of the Trust, dated as of October 
31, 1996 (the "Certificate"), as filed in the office of the Secretary of State 
of the State of Delaware (the "Secretary of State") on November 6, 1996;

             (b)   The Trust Agreement of the Trust, dated as of October 31,
1996, as amended by the Amended and Restated Trust Agreement of the Trust, dated
as of November 26, 1996 (including Exhibits B and D thereto) (collectively, the
"Trust Agreement"), among First Bank System, Inc. (the "Company"), as Depositor,
and the trustees and the administrative agents of the Trust named therein
(collectively, the "Trustees");

             (c)   The Registration Statement (the "Registration Statement") on 
Form S-4, including a prospectus with respect to the Trust (the "Prospectus").
 

<PAGE>
 
FBS Capital I
December 20, 1996
Page 2



               relating to the 8.09% Capital Securities of the Trust
               representing preferred undivided beneficial interests in the
               assets of the Trust (each, a "New Security" and collectively, the
               "New Securities"), filed by the Company and the Trust with the
               Securities and Exchange Commission; and

          (d)  A Certificate of Good Standing for the Trust, dated November 26, 
               1996, hereof, obtained from the Secretary of State.

          Initially capitalized terms used herein and not otherwise defined are 
used as defined in the Trust Agreement.

          For purposes of this opinion, we have not reviewed any documents other
than the documents listed above, and we have assumed that there exists no 
provision in any document that we have not reviewed that bears upon or is 
inconsistent with the opinions stated herein.  We have conducted no independent 
factual investigation of our own but rather have relied solely upon the 
foregoing documents, the statements and information set forth therein and the 
additional matters recited or assumed herein, all of which we have assumed to be
true, complete and accurate in all material respects.

          With respect to all documents examined by us, we have assumed (i) the
authenticity of all documents submitted to us as authentic originals, (ii) the 
conformity with the originals of all documents submitted to us as copies or 
forms, and (iii) the genuineness of all signatures.

          For purposes of this opinion, we have assumed (i) that the Trust 
Agreement constitutes the entire agreement among the parties thereto with 
respect to the subject matter thereof, including with respect to the creation, 
operation and termination of the Trust, and that the Trust Agreement and the 
Certificate are in full force and effect and have not been amended, (ii) except 
to the extent provided in paragraph 1 below, the due creation or due 
organization or due formation, as the case may be, and valid existence in good 
standing of each party to the documents examined by us under the laws of the 
jurisdiction governing its creation, organization or formation, (iii) the legal 
capacity of natural persons who are parties to the documents examined by us, 
(iv) that each of the parties to the documents examined by us has the power and 
authority to execute and deliver, and to perform its obligations under such 
documents, (v) the due authorization, execution and delivery by all parties 
thereto of all documents examined by us, (vi) the receipt by each Person to whom
a New Security is to be issued by the Trust (collectively, the "Security
Holders") of a Certificate for such New Security and the payment for the New
Security acquired by it, in accordance with the Trust Agreement and the
Prospectus, and (vii) that the New Securities are issued and sold to the
Security Holders in accordance with the Trust.
<PAGE>
 
FBS Capital I
December 20, 1996
Page 3



Agreement and the Prospectus.  We have not participated in the preparation of 
the Prospectus and assume no responsibility for its contents.

          This opinion is limited to the laws of the State of Delaware
(excluding the securities laws of the State of Delaware), and we have not
considered and express no opinion on the laws of any other jurisdiction,
including federal laws and rules and regulations relating thereto. Our opinions
are rendered only with respect to Delaware laws and rules, regulations and
orders thereunder which are currently in effect.

          Based upon the foregoing, and upon our examination of such questions 
of law and statutes of the State of Delaware as we have considered necessary or 
appropriate, and subject to the assumptions, qualifications, limitations and 
exceptions set forth herein, we are of the opinion that:

          1.  The Trust has been duly created and is validly existing in good 
standing as a business trust under the Business Trust Act.

          2.  The New Securities will represent valid and, subject to the 
qualifications set forth in paragraph 3 below, fully paid and nonassessable 
undivided beneficial interests in the assets of the Trust.

          3.  The Security Holders, as beneficial owners of the Trust, will be
entitled to the same limitation of personal liability extended to stockholders
of private corporations for profit organized under the General Corporation Law
of the State of Delaware. We note that the Security Holders may be obligated to
make payments as set forth in the Trust Agreement.

          We consent to the filing of this opinion with the Securities and 
Exchange Commission as an exhibit to the Registration Statement.  In addition,
we hereby consent to the use of our name under the heading "Validity of the New
Securities" in the Prospectus.  In giving the foregoing consents, we do not
thereby admit that we come within the category of Persons whose consent is
required under Section 7 of the Securities Act of 1933, as amended, or the rules
and regulations of the Securities and Exchange Commission thereunder.  Except as
stated above, without our prior written consent, this opinion may not be
furnished or quoted to, or relied upon by, any other Person for any purpose.

                                       Very truly yours, 
                                       /s/ Richards, Layton & Finger

EAM

<PAGE>

                                                                       Exhibit 8

                      [DAVIS POLK & WARDWELL LETTERHEAD]

                                                               December 20, 1996


First Bank System, Inc.
FBS Capital I
601 Second Avenue South
Minneapolis, MN  55402-4302

          Re:  FBS Capital I Registration--
               $300,000,000 Trust Securities
               -----------------------------

Dear Sirs:

          We have acted as special tax counsel for First Bank System, Inc. 
("FBS") and FBS Capital I (the "Trust") in connection with the offer to exchange
up to U.S. $300,000,000 of the Trust's 8.09% Capital Securities which have been 
registered under the Securities Act of 1933, as amended for a like Liquidation 
Amount of the Trust's outstanding 8.09% Capital Securities. In rendering our 
opinion, we have examined the Amended and Restated Trust Agreement dated as of 
November 26, 1996 (the "Trust Agreement") and have assumed that the Issuer 
Trustees will conduct the affairs of the Trust in accordance with the Trust 
Agreement. We hereby confirm the opinion set forth under the caption "Certain 
Federal Income Tax Consequences" in the prospectus (the "Prospectus") that is 
part of the Registration Statement on Form S-4 filed by FBS and the Trust with 
the Securities and Exchange Commission on December 20, 1996. Capitalized terms 
used herein but not defined have the meanings as provided in the Prospectus.

          We hereby consent to the use of our name under the caption "Certain 
Federal Income Tax Consequences" in the Prospectus.  The issuance of such a 
consent does not concede that we are an "Expert" for the purposes of the 
Securities Act of 1933.


                                       Very truly yours,

                                       /s/ Davis Polk & Wardwell

<PAGE>
 
                                                                    EXHIBIT 25.1

                                  Registration No.    
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------

                      SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C.  20549

                                   FORM T-1

        STATEMENT OF ELIGIBILITY UNDER THE TRUST INDENTURE ACT OF 1939
                 OF A CORPORATION DESIGNATED TO ACT AS TRUSTEE

CHECK IF AN APPLICATION TO DETERMINE ELIGIBILITY OF A TRUSTEE PURSUANT TO
SECTION 305(B)(2)  X
                  ---

                           WILMINGTON TRUST COMPANY
              (Exact name of trustee as specified in its charter)


      Delaware                                            51-0055023
(State of incorporation)                    (I.R.S. employer identification no.)

                              Rodney Square North
                           1100 North Market Street
                          Wilmington, Delaware  19890
                   (Address of principal executive offices)

                              Cynthia L. Corliss
                       Vice President and Trust Counsel
                           Wilmington Trust Company
                              Rodney Square North
                          Wilmington, Delaware  19890
                                (302) 651-8516
           (Name, address and telephone number of agent for service)

                            FIRST BANK SYSTEM, INC.

              (Exact name of obligor as specified in its charter)

       Delaware                                          41-0255900
(State of incorporation)                    (I.R.S. employer identification no.)

        First Bank Place
     601 Second Avenue South
      Minneapolis, Minnesota                             55402-4302
(Address of principal executive offices)                 (Zip Code)



              Junior Subordinated Deferrable Interest Debentures
                          of First Bank System, Inc.
                      (Title of the indenture securities)
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>
 
ITEM 1.       GENERAL INFORMATION.

              Furnish the following information as to the trustee:

         (a)  Name and address of each examining or supervising authority to
              which it is subject.

              Federal Deposit Insurance Co.              State Bank Commissioner
              Five Penn Center                           Dover, Delaware
              Suite #2901
              Philadelphia, PA

         (b)  Whether it is authorized to exercise corporate trust powers.

              The trustee is authorized to exercise corporate trust powers.

ITEM 2.  AFFILIATIONS WITH THE OBLIGOR.

              If the obligor is an affiliate of the trustee, describe each
         affiliation:

              Based upon an examination of the books and records of the trustee
         and upon information furnished by the obligor, the obligor is not an
         affiliate of the trustee.

ITEM 3.  LIST OF EXHIBITS.

              List below all exhibits filed as part of this Statement of
         Eligibility and Qualification.

         A.   Copy of the Charter of Wilmington Trust Company, which includes
              the certificate of authority of Wilmington Trust Company to
              commence business and the authorization of Wilmington Trust
              Company to exercise corporate trust powers.
         B.   Copy of By-Laws of Wilmington Trust Company.
         C.   Consent of Wilmington Trust Company required by Section 321(b) of
              Trust Indenture Act.
         D.   Copy of most recent Report of Condition of Wilmington Trust
              Company.

         Pursuant to the requirements of the Trust Indenture Act of 1939, as
amended, the trustee, Wilmington Trust Company, a corporation organized and
existing under the laws of Delaware, has duly caused this Statement of
Eligibility to be signed on its behalf by the undersigned, thereunto duly
authorized, all in the City of Wilmington and State of Delaware on the 9th day
of December, 1996.

                                         WILMINGTON TRUST COMPANY
[SEAL]
 
Attest:/s/ W. Chris Sponenberg           By:/s/Emmett R. Harmon
       -----------------------------        ------------------------
       Assistant Secretary               Name:  Emmett R. Harmon
                                         Title:  Vice President

                                       2
<PAGE>
 
                                   EXHIBIT A

                                AMENDED CHARTER

                           WILMINGTON TRUST COMPANY

                             WILMINGTON, DELAWARE

                          AS EXISTING ON MAY 9, 1987
<PAGE>
 
                                AMENDED CHARTER

                                      OR

                             ACT OF INCORPORATION

                                      OF

                           WILMINGTON TRUST COMPANY

      WILMINGTON TRUST COMPANY, originally incorporated by an Act of the General
Assembly of the State of Delaware, entitled "An Act to Incorporate the Delaware
Guarantee and Trust Company", approved March 2, A.D. 1901, and the name of which
company was changed to "WILMINGTON TRUST COMPANY" by an amendment filed in the
Office of the Secretary of State on March 18, A.D. 1903, and the Charter or Act
of Incorporation of which company has been from time to time amended and changed
by merger agreements pursuant to the corporation law for state banks and trust
companies of the State of Delaware, does hereby alter and amend its Charter or
Act of Incorporation so that the same as so altered and amended shall in its
entirety read as follows:

      FIRST: - The name of this corporation is WILMINGTON TRUST COMPANY.

      SECOND: - The location of its principal office in the State of Delaware is
      at Rodney Square North, in the City of Wilmington, County of New Castle;
      the name of its resident agent is WILMINGTON TRUST COMPANY whose address
      is Rodney Square North, in said City.  In addition to such principal
      office, the said corporation maintains and operates branch offices in the
      City of Newark, New Castle County, Delaware, the Town of Newport, New
      Castle County, Delaware, at Claymont, New Castle County, Delaware, at
      Greenville, New Castle County Delaware, and at Milford Cross Roads, New
      Castle County, Delaware, and shall be empowered to open, maintain and
      operate branch offices at Ninth and Shipley Streets, 418 Delaware Avenue,
      2120 Market Street, and 3605 Market Street, all in the City of Wilmington,
      New Castle County, Delaware, and such other branch offices or places of
      business as may be authorized from time to time by the agency or agencies
      of the government of the State of Delaware empowered to confer such
      authority.

      THIRD: - (a) The nature of the business and the objects and purposes
      proposed to be transacted, promoted or carried on by this Corporation are
      to do any or all of the things herein mentioned as fully and to the same
      extent as natural persons might or could do and in any part of the world,
      viz.:

           (1)  To sue and be sued, complain and defend in any Court of law or
           equity and to make and use a common seal, and alter the seal at
           pleasure, to hold, purchase, convey, mortgage or otherwise deal in
           real and personal estate and property, and to appoint such officers
           and agents as the business of the
<PAGE>
 
           Corporation shall require, to make by-laws not inconsistent with the
           Constitution or laws of the United States or of this State, to
           discount bills, notes or other evidences of debt, to receive deposits
           of money, or securities for money, to buy gold and silver bullion and
           foreign coins, to buy and sell bills of exchange, and generally to
           use, exercise and enjoy all the powers, rights, privileges and
           franchises incident to a corporation which are proper or necessary
           for the transaction of the business of the Corporation hereby
           created.

           (2)  To insure titles to real and personal property, or any estate or
           interests therein, and to guarantee the holder of such property, real
           or personal, against any claim or claims, adverse to his interest
           therein, and to prepare and give certificates of title for any lands
           or premises in the State of Delaware, or elsewhere.

           (3)  To act as factor, agent, broker or attorney in the receipt,
           collection, custody, investment and management of funds, and the
           purchase, sale, management and disposal of property of all
           descriptions, and to prepare and execute all papers which may be
           necessary or proper in such business.

           (4)  To prepare and draw agreements, contracts, deeds, leases,
           conveyances, mortgages, bonds and legal papers of every description,
           and to carry on the business of conveyancing in all its branches.

           (5)  To receive upon deposit for safekeeping money, jewelry, plate,
           deeds, bonds and any and all other personal property of every sort
           and kind, from executors, administrators, guardians, public officers,
           courts, receivers, assignees, trustees, and from all fiduciaries, and
           from all other persons and individuals, and from all corporations
           whether state, municipal, corporate or private, and to rent boxes,
           safes, vaults and other receptacles for such property.

           (6)  To act as agent or otherwise for the purpose of registering,
           issuing, certificating, countersigning, transferring or underwriting
           the stock, bonds or other obligations of any corporation,
           association, state or municipality, and may receive and manage any
           sinking fund therefor on such terms as may be agreed upon between the
           two parties, and in like manner may act as Treasurer of any
           corporation or municipality.

           (7)  To act as Trustee under any deed of trust, mortgage, bond or
           other instrument issued by any state, municipality, body politic,
           corporation, association or person, either alone or in conjunction
           with any other person or persons, corporation or corporations.

                                       2
<PAGE>
 
           (8)  To guarantee the validity, performance or effect of any contract
           or agreement, and the fidelity of persons holding places of
           responsibility or trust; to become surety for any person, or persons,
           for the faithful performance of any trust, office, duty, contract or
           agreement, either by itself or in conjunction with any other person,
           or persons, corporation, or corporations, or in like manner become
           surety upon any bond, recognizance, obligation, judgment, suit,
           order, or decree to be entered in any court of record within the
           State of Delaware or elsewhere, or which may now or hereafter be
           required by any law, judge, officer or court in the State of Delaware
           or elsewhere.

           (9)  To act by any and every method of appointment as trustee,
           trustee in bankruptcy, receiver, assignee, assignee in bankruptcy,
           executor, administrator, guardian, bailee, or in any other trust
           capacity in the receiving, holding, managing, and disposing of any
           and all estates and property, real, personal or mixed, and to be
           appointed as such trustee, trustee in bankruptcy, receiver, assignee,
           assignee in bankruptcy, executor, administrator, guardian or bailee
           by any persons, corporations, court, officer, or authority, in the
           State of Delaware or elsewhere; and whenever this Corporation is so
           appointed by any person, corporation, court, officer or authority
           such trustee, trustee in bankruptcy, receiver, assignee, assignee in
           bankruptcy, executor, administrator, guardian, bailee, or in any
           other trust capacity, it shall not be required to give bond with
           surety, but its capital stock shall be taken and held as security for
           the performance of the duties devolving upon it by such appointment.

           (10)  And for its care, management and trouble, and the exercise of
           any of its powers hereby given, or for the performance of any of the
           duties which it may undertake or be called upon to perform, or for
           the assumption of any responsibility the said Corporation may be
           entitled to receive a proper compensation.

           (11)  To purchase, receive, hold and own bonds, mortgages,
           debentures, shares of capital stock, and other securities,
           obligations, contracts and evidences of indebtedness, of any private,
           public or municipal corporation within and without the State of
           Delaware, or of the Government of the United States, or of any state,
           territory, colony, or possession thereof, or of any foreign
           government or country; to receive, collect, receipt for, and dispose
           of interest, dividends and income upon and from any of the bonds,
           mortgages, debentures, notes, shares of capital stock, securities,
           obligations, contracts, evidences of indebtedness and other property
           held and owned by it, and to exercise in respect of all such bonds,
           mortgages, debentures, notes, shares of capital stock, securities,
           obligations, contracts, evidences of indebtedness and other property,
           any and all the rights, powers and privileges of individual

                                       3
<PAGE>
 
           owners thereof, including the right to vote thereon; to invest and
           deal in and with any of the moneys of the Corporation upon such
           securities and in such manner as it may think fit and proper, and
           from time to time to vary or realize such investments; to issue bonds
           and secure the same by pledges or deeds of trust or mortgages of or
           upon the whole or any part of the property held or owned by the
           Corporation, and to sell and pledge such bonds, as and when the Board
           of Directors shall determine, and in the promotion of its said
           corporate business of investment and to the extent authorized by law,
           to lease, purchase, hold, sell, assign, transfer, pledge, mortgage
           and convey real and personal property of any name and nature and any
           estate or interest therein.

      (b)  In furtherance of, and not in limitation, of the powers conferred by
      the laws of the State of Delaware, it is hereby expressly provided that
      the said Corporation shall also have the following powers:

           (1)  To do any or all of the things herein set forth, to the same
           extent as natural persons might or could do, and in any part of the
           world.

           (2)  To acquire the good will, rights, property and franchises and to
           undertake the whole or any part of  the assets and liabilities of any
           person, firm, association or corporation, and to pay for the same in
           cash, stock of this Corporation, bonds or otherwise; to hold or in
           any manner to dispose of the whole or any part of the property so
           purchased; to conduct in any lawful manner the whole or any part of
           any business so acquired, and to exercise all the powers necessary or
           convenient in and about the conduct and management of such business.

           (3)  To take, hold, own, deal in, mortgage or otherwise lien, and to
           lease, sell, exchange, transfer, or in any manner whatever dispose of
           property, real, personal or mixed, wherever situated.

           (4)  To enter into, make, perform and carry out contracts of every
           kind with any person, firm, association or corporation, and, without
           limit as to amount, to draw, make, accept, endorse, discount,
           execute and issue promissory notes, drafts, bills of exchange,
           warrants, bonds, debentures, and other negotiable or transferable
           instruments.

           (5)  To have one or more offices, to carry on all or any of its
           operations and businesses, without restriction to the same extent as
           natural persons might or could do, to purchase or otherwise acquire,
           to hold, own, to mortgage, sell, convey or otherwise dispose of, real
           and personal property, of every class and description, in any State,
           District, Territory or Colony of the United States, and in any
           foreign country or place.

                                       4
<PAGE>
 
           (6)  It is the intention that the objects, purposes and powers
           specified and clauses contained in this paragraph shall (except where
           otherwise expressed in said paragraph) be nowise limited or
           restricted by reference to or inference from the terms of any other
           clause of this or any other paragraph in this charter, but that the
           objects, purposes and powers specified in each of the clauses of this
           paragraph shall be regarded as independent objects, purposes and
           powers.

      FOURTH: - (a)  The total number of shares of all classes of stock which
      the Corporation shall have authority to issue is forty-one million
      (41,000,000) shares, consisting of:

           (1)  One million (1,000,000) shares of Preferred stock, par value
           $10.00 per share (hereinafter referred to as "Preferred Stock"); and

           (2)  Forty million (40,000,000) shares of Common Stock, par value
           $1.00 per share (hereinafter referred to as "Common Stock").

      (b)  Shares of Preferred Stock may be issued from time to time in one or
      more series as may from time to time be determined by the Board of
      Directors each of said series to be distinctly designated.  All shares of
      any one series of Preferred Stock shall be alike in every particular,
      except that there may be different dates from which dividends, if any,
      thereon shall be cumulative, if made cumulative.  The voting powers and
      the preferences and relative, participating, optional and other special
      rights of each such series, and the qualifications, limitations or
      restrictions thereof, if any, may differ from those of any and all other
      series at any time outstanding; and, subject to the provisions of
      subparagraph 1 of Paragraph (c) of this Article FOURTH, the Board of
      Directors of the Corporation is hereby expressly granted authority to fix
      by resolution or resolutions adopted prior to the issuance of any shares
      of a particular series of Preferred Stock, the voting powers and the
      designations, preferences and relative, optional and other special rights,
      and the qualifications, limitations and restrictions of such series,
      including, but without limiting the generality of the foregoing, the
      following:

           (1)  The distinctive designation of, and the number of shares of
           Preferred Stock which shall constitute such series, which number may
           be increased (except where otherwise provided by the Board of
           Directors) or decreased (but not below the number of shares thereof
           then outstanding) from time to time by like action of the Board of
           Directors;

           (2)  The rate and times at which, and the terms and conditions on
           which, dividends, if any, on Preferred Stock of such series shall be
           paid, the extent of the preference or relation, if any, of such
           dividends to the dividends payable on any other class or classes, or
           series of the same or other class of

                                       5
<PAGE>
 
           stock and whether such dividends shall be cumulative or non-
           cumulative;

           (3)  The right, if any, of the holders of Preferred Stock of such
           series to convert the same into or exchange the same for, shares of
           any other class or classes or of any series of the same or any other
           class or classes of stock of the Corporation and the terms and
           conditions of such conversion or exchange;

           (4)  Whether or not Preferred Stock of such series shall be subject
           to redemption, and the redemption price or prices and the time or
           times at which, and the terms and conditions on which, Preferred
           Stock of such series may be redeemed.

           (5)  The rights, if any, of the holders of Preferred Stock of such
           series upon the voluntary or involuntary liquidation, merger,
           consolidation, distribution or sale of assets, dissolution or
           winding-up, of the Corporation.

           (6)  The terms of the sinking fund or redemption or purchase account,
           if any, to be provided for the Preferred Stock of such series; and

           (7)  The voting powers, if any, of the holders of such series of
           Preferred Stock which may, without limiting the generality of the
           foregoing include the right, voting as a series or by itself or
           together with other series of Preferred Stock or all series of
           Preferred Stock as a class, to elect one or more directors of the
           Corporation if there shall have been a default in the payment of
           dividends on any one or more series of Preferred Stock or under such
           circumstances and on such conditions as the Board of Directors may
           determine.

      (c)  (1)  After the requirements with respect to preferential dividends on
      the Preferred Stock (fixed in accordance with the provisions of section
      (b) of this Article FOURTH), if any, shall have been met and after the
      Corporation shall have complied with all the requirements, if any, with
      respect to the setting aside of sums as sinking funds or redemption or
      purchase accounts (fixed in accordance with the provisions of section (b)
      of this Article FOURTH), and subject further to any conditions which may
      be fixed in accordance with the provisions of section (b) of this Article
      FOURTH, then and not otherwise the holders of Common Stock shall be
      entitled to receive such dividends as may be declared from time to time by
      the Board of Directors.

           (2)  After distribution in full of the preferential amount, if any,
           (fixed in accordance with the provisions of section (b) of this
           Article FOURTH), to be distributed to the holders of Preferred Stock
           in the event of voluntary or involuntary liquidation, distribution or
           sale of assets, dissolution or winding-up, of the Corporation, the
           holders of the Common Stock shall be entitled to

                                       6
<PAGE>
 
           receive all of the remaining assets of the Corporation, tangible and
           intangible, of whatever kind available for distribution to
           stockholders ratably in proportion to the number of shares of Common
           Stock held by them respectively.

           (3)  Except as may otherwise be required by law or by the provisions
           of such resolution or resolutions as may be adopted by the Board of
           Directors pursuant to section (b) of this Article FOURTH, each holder
           of Common Stock shall have one vote in respect of each share of
           Common Stock held on all matters voted upon by the stockholders.

      (d)  No holder of any of the shares of any class or series of stock or of
      options, warrants or other rights to purchase shares of any class or
      series of stock or of other securities of the Corporation shall have any
      preemptive right to purchase or subscribe for any unissued stock of any
      class or series or any additional shares of any class or series to be
      issued by reason of any increase of the authorized capital stock of the
      Corporation of any class or series, or bonds, certificates of
      indebtedness, debentures or other securities convertible into or
      exchangeable for stock of the Corporation of any class or series, or
      carrying any right to purchase stock of any class or series, but any such
      unissued stock, additional authorized issue of shares of any class or
      series of stock or securities convertible into or exchangeable for stock,
      or carrying any right to purchase stock, may be issued and disposed of
      pursuant to resolution of the Board of Directors to such persons, firms,
      corporations or associations, whether such holders or others, and upon
      such terms as may be deemed advisable by the Board of Directors in the
      exercise of its sole discretion.

      (e)  The relative powers, preferences and rights of each series of
      Preferred Stock in relation to the relative powers, preferences and rights
      of each other series of Preferred Stock shall, in each case, be as fixed
      from time to time by the Board of Directors in the resolution or
      resolutions adopted pursuant to authority granted in section (b) of this
      Article FOURTH and the consent, by class or series vote or otherwise, of
      the holders of such of the series of Preferred Stock as are from time to
      time outstanding shall not be required for the issuance by the Board of
      Directors of any other series of Preferred Stock whether or not the
      powers, preferences and rights of such other series shall be fixed by the
      Board of Directors as senior to, or on a parity with, the powers,
      preferences and rights of such outstanding series, or any of them;
      provided, however, that the Board of Directors may provide in the
      resolution or resolutions as to any series of Preferred Stock adopted
      pursuant to section (b) of this Article FOURTH that the consent of the
      holders of a majority (or such greater proportion as shall be therein
      fixed) of the outstanding shares of such series voting thereon shall be
      required for the issuance of any or all other series of Preferred Stock.

                                       7
<PAGE>
 
      (f)  Subject to the provisions of section (e), shares of any series of
      Preferred Stock may be issued from time to time as the Board of Directors
      of the Corporation shall determine and on such terms and for such
      consideration as shall be fixed by the Board of Directors.

      (g)  Shares of Common Stock may be issued from time to time as the Board
      of Directors of the Corporation shall determine and on such terms and for
      such consideration as shall be fixed by the Board of Directors.

      (h)  The authorized amount of shares of Common Stock and of Preferred
      Stock may, without a class or series vote, be increased or decreased from
      time to time by the affirmative vote of the holders of a majority of the
      stock of the Corporation entitled to vote thereon.

      FIFTH: - (a)  The business and affairs of the Corporation shall be
      conducted and managed by a Board of Directors.  The number of directors
      constituting the entire Board shall be not less than five nor more than
      twenty-five as fixed from time to time by vote of a majority of the whole
      Board, provided, however, that the number of directors shall not be
      reduced so as to shorten the term of any director at the time in office,
      and provided further, that the number of directors constituting the whole
      Board shall be twenty-four until otherwise fixed by a majority of the
      whole Board.

      (b)  The Board of Directors shall be divided into three classes, as nearly
      equal in number as the then total number of directors constituting the
      whole Board permits, with the term of office of one class expiring each
      year.  At the annual meeting of stockholders in 1982, directors of the
      first class shall be elected to hold office for a term expiring at the
      next succeeding annual meeting, directors of the second class shall be
      elected to hold office for a term expiring at the second succeeding annual
      meeting and directors of the third class shall be elected to hold office
      for a term expiring at the third succeeding annual meeting.  Any vacancies
      in the Board of Directors for any reason, and any newly created
      directorships resulting from any increase in the directors, may be filled
      by the Board of Directors, acting by a majority of the directors then in
      office, although less than a quorum, and any directors so chosen shall
      hold office until the next annual election of directors.  At such
      election, the stockholders shall elect a successor to such director to
      hold office until the next election of the class for which such director
      shall have been chosen and until his successor shall be elected and
      qualified.  No decrease in the number of directors shall shorten the term
      of any incumbent director.

      (c)  Notwithstanding any other provisions of this Charter or Act of
      Incorporation or the By-Laws of the Corporation (and notwithstanding the
      fact that some lesser percentage may be specified by law, this Charter or
      Act of Incorporation or the By-Laws of the Corporation), any director or
      the entire Board of Directors of the

                                       8
<PAGE>
 
      Corporation may be removed at any time without cause, but only by the
      affirmative vote of the holders of two-thirds or more of the outstanding
      shares of capital stock of the Corporation entitled to vote generally in
      the election of directors (considered for this purpose as one class) cast
      at a meeting of the stockholders called for that purpose.

      (d)  Nominations for the election of directors may be made by the Board of
      Directors or by any stockholder entitled to vote for the election of
      directors.  Such nominations shall be made by notice in writing, delivered
      or mailed by first class United States mail, postage prepaid, to the
      Secretary of the Corporation not less than 14 days nor more than 50 days
      prior to any meeting of the stockholders called for the election of
      directors; provided, however, that if less than 21 days' notice of the
      meeting is given to stockholders, such written notice shall be delivered
      or mailed, as prescribed, to the Secretary of the Corporation not later
      than the close of the seventh day following the day on which notice of the
      meeting was mailed to stockholders.  Notice of nominations which are
      proposed by the Board of Directors shall be given by the Chairman on
      behalf of the Board.

      (e)  Each notice under subsection (d) shall set forth (i) the name, age,
      business address and, if known, residence address of each nominee proposed
      in such notice, (ii) the principal occupation or employment of such
      nominee and (iii) the number of shares of stock of the Corporation which
      are beneficially owned by each such nominee.

      (f)  The Chairman of the meeting may, if the facts warrant, determine and
      declare to the meeting that a nomination was not made in accordance with
      the foregoing procedure, and if he should so determine, he shall so
      declare to the meeting and the defective nomination shall be disregarded.

      (g)  No action required to be taken or which may be taken at any annual or
      special meeting of stockholders of the Corporation may be taken without a
      meeting, and the power of stockholders to consent in writing, without a
      meeting, to the taking of any action is specifically denied.

      SIXTH: - The Directors shall choose such officers, agent and servants as
      may be provided in the By-Laws as they may from time to time find
      necessary or proper.

      SEVENTH: - The Corporation hereby created is hereby given the same powers,
      rights and privileges as may be conferred upon corporations organized
      under the Act entitled "An Act Providing a General Corporation Law",
      approved March 10, 1899, as from time to time amended.

      EIGHTH: - This Act shall be deemed and taken to be a private Act.

                                       9
<PAGE>
 
      NINTH: - This Corporation is to have perpetual existence.

      TENTH: - The Board of Directors, by resolution passed by a majority of the
      whole Board, may designate any of their number to constitute an Executive
      Committee, which Committee, to the extent provided in said resolution, or
      in the By-Laws of the Company, shall have and may exercise all of the
      powers of the Board of Directors in the management of the business and
      affairs of the Corporation, and shall have power to authorize the seal of
      the Corporation to be affixed to all papers which may require it.

      ELEVENTH: - The private property of the stockholders shall not be liable
      for the payment of corporate debts to any extent whatever.

      TWELFTH: - The Corporation may transact business in any part of the world.

      THIRTEENTH: - The Board of Directors of the Corporation is expressly
      authorized to make, alter or repeal the By-Laws of the Corporation by a
      vote of the majority of the entire Board.  The stockholders may make,
      alter or repeal any By-Law whether or not adopted by them, provided
      however, that any such additional By-Laws, alterations or repeal may be
      adopted only by the affirmative vote of the holders of two-thirds or more
      of the outstanding shares of capital stock of the Corporation entitled to
      vote generally in the election of directors (considered for this purpose
      as one class).

      FOURTEENTH: - Meetings of the Directors may be held outside of the State
      of Delaware at such places as may be from time to time designated by the
      Board, and the Directors may keep the books of the Company outside of the
      State of Delaware at such places as may be from time to time designated by
      them.

      FIFTEENTH: - (a) In addition to any affirmative vote required by law, and
      except as otherwise expressly provided in sections (b) and (c) of this
      Article FIFTEENTH:

           (A)  any merger or consolidation of the Corporation or any Subsidiary
           (as hereinafter defined) with or into (i) any Interested Stockholder
           (as hereinafter defined) or (ii) any other corporation (whether or
           not itself an Interested Stockholder), which, after such merger or
           consolidation, would be an Affiliate (as hereinafter defined) of an
           Interested Stockholder, or

           (B)  any sale, lease, exchange, mortgage, pledge, transfer or other
           disposition (in one transaction or a series of related transactions)
           to or with any Interested Stockholder or any Affiliate of any
           Interested Stockholder of any assets of the Corporation or any
           Subsidiary having an aggregate fair market value of $1,000,000 or
           more, or

                                      10
<PAGE>
 
           (C)  the issuance or transfer by the Corporation or any Subsidiary
           (in one transaction or a series of related transactions) of any
           securities of the Corporation or any Subsidiary to any Interested
           Stockholder or any Affiliate of any Interested Stockholder in
           exchange for cash, securities or other property (or a combination
           thereof) having an aggregate fair market value of $1,000,000 or more,
           or

           (D)  the adoption of any plan or proposal for the liquidation or
           dissolution of the Corporation, or

           (E)  any reclassification of securities (including any reverse stock
           split), or recapitalization of the Corporation, or any merger or
           consolidation of the Corporation with any of its Subsidiaries or any
           similar transaction (whether or not with or into or otherwise
           involving an Interested Stockholder) which has the effect, directly
           or indirectly, of increasing the proportionate share of the
           outstanding shares of any class of equity or convertible securities
           of the Corporation or any Subsidiary which is directly or indirectly
           owned by any Interested Stockholder, or any Affiliate of any
           Interested Stockholder,

shall require the affirmative vote of the holders of at least  two-thirds of the
outstanding shares of capital stock of the Corporation entitled to vote
generally in the election of directors, considered for the purpose of this
Article FIFTEENTH as one class ("Voting Shares").  Such affirmative vote shall
be required notwithstanding the fact that no vote may be required, or that some
lesser percentage may be specified, by law or in any agreement with any national
securities exchange or otherwise.

             (2) The term "business combination" as used in this Article
             FIFTEENTH shall mean any transaction which is referred to any one
             or more of clauses (A) through (E) of paragraph 1 of the section
             (a).

           (b)  The provisions of section (a) of this Article FIFTEENTH shall
           not be applicable to any particular business combination and such
           business combination shall require only such affirmative vote as is
           required by law and any other provisions of the Charter or Act of
           Incorporation of By-Laws if such business combination has been
           approved by a majority of the whole Board.

           (c)  For the purposes of this Article FIFTEENTH:

      (1)  A "person" shall mean any individual firm, corporation or other
      entity.

      (2)  "Interested Stockholder" shall mean, in respect of any business
      combination, any person (other than the Corporation or any Subsidiary) who
      or which as of the record date for the determination of stockholders
      entitled to notice of and to vote on

                                      11
<PAGE>
 
      such business combination, or immediately prior to the consummation of any
      such transaction:

           (A)  is the beneficial owner, directly or indirectly, of more than
           10% of the Voting Shares, or

           (B)  is an Affiliate of the Corporation and at any time within two
           years prior thereto was the beneficial owner, directly or indirectly,
           of not less than 10% of the then outstanding voting Shares, or

           (C)  is an assignee of or has otherwise succeeded in any share of
           capital stock of the Corporation which were at any time within two
           years prior thereto beneficially owned by any Interested Stockholder,
           and such assignment or succession shall have occurred in the course
           of a transaction or series of transactions not involving a public
           offering within the meaning of the Securities Act of 1933.

      (3)  A person shall be the "beneficial owner" of any Voting Shares:

           (A)  which such person or any of its Affiliates and Associates (as
           hereafter defined) beneficially own, directly or indirectly, or

           (B)  which such person or any of its Affiliates or Associates has (i)
           the right to acquire (whether such right is exercisable immediately
           or only after the passage of time), pursuant to any agreement,
           arrangement or understanding or upon the exercise of conversion
           rights, exchange rights, warrants or options, or otherwise, or (ii)
           the right to vote pursuant to any agreement, arrangement or
           understanding, or

           (C)  which are beneficially owned, directly or indirectly, by any
           other person with which such first mentioned person or any of its
           Affiliates or Associates has any agreement, arrangement or
           understanding for the purpose of acquiring, holding, voting or
           disposing of any shares of capital stock of the Corporation.

      (4)  The outstanding Voting Shares shall include shares deemed owned
      through application of paragraph (3) above but shall not include any other
      Voting Shares which may be issuable pursuant to any agreement, or upon
      exercise of conversion rights, warrants or options or otherwise.

      (5)  "Affiliate" and "Associate" shall have the respective meanings given
      those terms in Rule 12b-2 of the General Rules and Regulations under the
      Securities Exchange Act of 1934, as in effect on December 31, 1981.

                                      12
<PAGE>
 
     (6)  "Subsidiary" shall mean any corporation of which a majority of any
     class of equity security (as defined in Rule 3a11-1 of the General Rules
     and Regulations under the Securities Exchange Act of 1934, as in effect in
     December 31, 1981) is owned, directly or indirectly, by the Corporation;
     provided, however, that for the purposes of the definition of Investment
     Stockholder set forth in paragraph (2) of this section (c), the term
     "Subsidiary" shall mean only a corporation of which a majority of each
     class of equity security is owned, directly or indirectly, by the
     Corporation.
   
          (d)  majority of the directors shall have the power and duty to
          determine for the purposes of this Article FIFTEENTH on the basis of
          information known to them, (1) the number of Voting Shares
          beneficially owned by any person (2) whether a person is an Affiliate
          or Associate of another, (3) whether a person has an agreement,
          arrangement or understanding with another as to the matters referred
          to in paragraph (3) of section (c), or (4) whether the assets subject
          to any business combination or the consideration received for the
          issuance or transfer of securities by the Corporation, or any
          Subsidiary has an aggregate fair market value of $1,00,000 or more.
   
          (e)  Nothing contained in this Article FIFTEENTH shall be construed
          to relieve any Interested Stockholder from any fiduciary obligation
          imposed by law.
   
     SIXTEENTH:   Notwithstanding any other provision of this Charter or Act of
     Incorporation or the By-Laws of the Corporation (and in addition to any
     other vote that may be required by law, this Charter or Act of
     Incorporation by the By-Laws), the affirmative vote of the holders of at
     least two-thirds of the outstanding shares of the capital stock of the
     Corporation entitled to vote generally in the election of directors
     (considered for this purpose as one class) shall be required to amend,
     alter or repeal any provision of Articles FIFTH, THIRTEENTH, FIFTEENTH or
     SIXTEENTH of this Charter or Act of Incorporation.
   
     SEVENTEENTH: (a)  a Director of this Corporation shall not be liable to the
     Corporation or its stockholders for monetary damages for breach of
     fiduciary duty as a Director, except to the extent such exemption from
     liability or limitation thereof is not permitted under the Delaware General
     Corporation Laws as the same exists or may hereafter be amended.
   
          (b)  Any repeal or modification of the foregoing paragraph shall not
          adversely affect any right or protection of a Director of the
          Corporation existing hereunder with respect to any act or omission
          occurring prior to the time of such repeal or modification."

                                      13
<PAGE>
 
                                   EXHIBIT B

                                    BY-LAWS


                            WILMINGTON TRUST COMPANY

                              WILMINGTON, DELAWARE

                        AS EXISTING ON DECEMBER 21, 1995
<PAGE>
 
                      BY-LAWS OF WILMINGTON TRUST COMPANY


                                   ARTICLE I
                            STOCKHOLDERS' MEETINGS

     Section 1. The Annual Meeting of Stockholders shall be held on the third
Thursday in April each year at the principal office at the Company or at such
other date, time, or place as may be designated by resolution by the Board of
Directors.

     Section 2. Special meetings of all stockholders may be called at any time
by the Board of Directors, the Chairman of the Board or the President.

     Section 3. Notice of all meetings of the stockholders shall be given by
mailing to each stockholder at least ten (10 days before said meeting, at his
last known address, a written or printed notice fixing the time and place of
such meeting.

     Section 4. A majority in the amount of the capital stock of the Company
issued and outstanding on the record date, as herein determined, shall
constitute a quorum at all meetings of stockholders for the transaction of any
business, but the holders of a small number of shares may adjourn, from time to
time, without further notice, until a quorum is secured. At each annual or
special meeting of stockholders, each stockholder shall be entitled to one vote,
either in person or by proxy, for each shares of stock registered in the
stockholder's name on the books of the Company on the record date for any such
meeting as determined herein.


                                  ARTICLE II
                                   DIRECTORS

     Section 1. The number and classification of the Board of Directors shall be
as set forth in the Charter of the Bank.

     Section 2. No person who has attained the age of seventy-two (72) years
shall be nominated for election to the Board of Directors of the Company,
provided, however, that this limitation shall not apply to any person who was
serving as director of the Company on September 16, 1971.

     Section 3. The class of Directors so elected shall hold office for three
years or until their successors are elected and qualified.

     Section 4. The affairs and business of the Company shall be managed and
conducted by the Board of Directors.

     Section 5. Regular meetings of the Board of Directors shall be held on the
third Thursday of each month at the principal office of the Company, or at such
other place and
<PAGE>
 
time as may be designated by the Board of Directors, the Chairman of the Board,
or the President.

     Section 6. Special meetings of the Board of Directors may be called at any
time by the Chairman of the Board of Directors or by the President, and shall be
called upon the written request of a majority of the directors.

     Section 7. A majority of the directors elected and qualified shall be
necessary to constitute a quorum for the transaction of business at any meeting
of the Board of Directors.

     Section 8. Written notice shall be sent by mail to each director of any
special meeting of the Board of Directors, and of any change in the time or
place of any regular meeting, stating the time and place of such meeting, which
shall be mailed not less than two days before the time of holding such meeting.

     Section 9. In the event of the death, resignation, removal, inability to
act, or disqualification of any director, the Board of Directors, although less
than a quorum, shall have the right to elect the successor who shall hold office
for the remainder of the full term of the class of directors in which the
vacancy occurred, and until such director's successor shall have been duly
elected and qualified.

     Section 10. The Board of Directors at its first meeting after its election
by the stockholders shall appoint an Executive Committee, a Trust Committee, an
Audit Committee and a Compensation Committee, and shall elect from its own
members a Chairman of the Board of Directors and a President who may be the same
person. The Board of Directors shall also elect at such meeting a Secretary and
a Treasurer, who may be the same person, may appoint at any time such other
committees and elect or appoint such other officers as it may deem advisable.
The Board of Directors may also elect at such meeting one or more Associate
Directors.

     Section 11. The Board of Directors may at any time remove, with or without
cause, any member of any Committee appointed by it or any associate director or
officer elected by it and may appoint or elect his successor.

     Section 12. The Board of Directors may designate an officer to be in charge
of such of the departments or division of the Company as it may deem advisable.


                                  ARTICLE III
                                  COMMITTEES

     Section I.  Executive Committee

          (A)  The Executive Committee shall be composed of not more than nine

                                       2
<PAGE>
 
members who shall be selected by the Board of Directors from its own members and
who shall hold office during the pleasure of the Board.

          (B)  The Executive Committee shall have all the powers of the Board of
Directors when it is not in session to transact all business for and in behalf
of the Company that may be brought before it.

          (C)  The Executive Committee shall meet at the principal office of the
Company or elsewhere in its discretion at such times to be determined by a
majority of its members, or at the call of the Chairman of the Executive
Committee or at the call of the Chairman of the Board of Directors. The majority
of its members shall be necessary to constitute a quorum for the transaction of
business. Special meetings of the Executive Committee may be held at any time
when a quorum is present.

          (D)  Minutes of each meeting of the Executive Committee shall be kept
and submitted to the Board of Directors at its next meeting.

          (E)  The Executive Committee shall advise and superintend all
investments that may be made of the funds of the Company, and shall direct the
disposal of the same, in accordance with such rules and regulations as the Board
of Directors from time to time make.

          (F)  In the event of a state of disaster of sufficient severity to
prevent the conduct and management of the affairs and business of the Company by
its directors and officers as contemplated by these By-Laws any two available
members of the Executive Committee as constituted immediately prior to such
disaster shall constitute a quorum of that Committee for the full conduct and
management of the affairs and business of the Company in accordance with the
provisions of Article III of these By-Laws; and if less than three members of
the Trust Committee is constituted immediately prior to such disaster shall be
available for the transaction of its business, such Executive Committee shall
also be empowered to exercise all of the powers reserved to the Trust Committee
under Article III Section 2 hereof. In the event of the unavailability, at such
time, of a minimum of two members of such Executive Committee, any three
available directors shall constitute the Executive Committee for the full
conduct and management of the affairs and business of the Company in accordance
with the foregoing provisions of this Section. This By-Law shall be subject to
implementation by Resolutions of the Board of Directors presently existing or
hereafter passed from time to time for that purpose, and any provisions of these
By-Laws (other than this Section) and any resolutions which are contrary to the
provisions of this Section or to the provisions of any such implementary
Resolutions shall be suspended during such a disaster period until it shall be
determined by any interim Executive Committee acting under this section that it
shall be to the advantage of the Company to resume the conduct and management of
its affairs and business under all of the other provisions of these By-Laws.

                                       3
<PAGE>
 
     Section 2.  Trust Committee
 
          (A)  The Trust Committee shall be composed of not more than thirteen
members who shall be selected by the Board of Directors, a majority of whom
shall be members of the Board of Directors and who shall hold office during the
pleasure of the Board.

          (B)  The Trust Committee shall have general supervision over the Trust
Department and the investment of trust funds, in all matters, however, being
subject to the approval of the Board of Directors.

          (C)  The Trust Committee shall meet at the principal office of the
Company or elsewhere in its discretion at least once a month.  A majority of its
members shall be necessary to constitute a quorum for the transaction of
business.  Special meetings of the Trust Committee may be held at any time when
a quorum is present.

          (D)  Minutes of each meeting of the Trust Committee shall be kept
and promptly submitted to the Board of Directors.
 
          (E)  The Trust Committee shall have the power to appoint Committees
and/or designate officers or employees of the Company to whom supervision over
the investment of trust funds may be delegated when the Trust Committee is not
in session.

     Section 3.  Audit Committee

          (A)  The Audit Committee shall be composed of five members who shall
be selected by the Board of Directors from its own members, none of whom shall
be an officer of the Company, and shall hold office at the pleasure of the
Board.

          (B)  The Audit Committee shall have general supervision over the Audit
Division in all matters however subject to the approval of the Board of
Directors; it shall consider all matters brought to its attention by the officer
in charge of the Audit Division, review all reports of examination of the
Company made by any governmental agency or such independent auditor employed for
that purpose, and make such recommendations to the Board of Directors with
respect thereto or with respect to any other matters pertaining to auditing the
Company as it shall deem desirable.

          (C)  The Audit Committee shall meet whenever and wherever the majority
of its members shall deem it to be proper for the transaction of its business,
and a majority of its Committee shall constitute a quorum.

      Section 4.  Compensation Committee

          (A)  The Compensation Committee shall be composed of not more than

                                       4
<PAGE>
 
five (5) members who shall be selected by the Board of Directors from its own
members who are not officers of the Company and who shall hold office during the
pleasure of the Board.

          (B)  The Compensation Committee shall in general advise upon all
matters of policy concerning the Company brought to its attention by the
management and from time to time review the management of the Company, major
organizational matters, including salaries and employee benefits and
specifically shall administer the Executive Incentive Compensation Plan.

          (C)  Meetings of the Compensation Committee may be called at any time
by the Chairman of the Compensation Committee, the Chairman of the Board of
Directors, or the President of the Company.

     Section 5.  Associate Directors

          (A)  Any person who has served as a director may be elected by the
Board of Directors as an associate director, to serve during the pleasure of the
Board.

          (B)  An associate director shall be entitled to attend all directors
meetings and participate in the discussion of all matters brought to the Board,
with the exception that he would have no right to vote. An associate director
will be eligible for appointment to Committees of the Company, with the
exception of the Executive Committee, Audit Committee and Compensation
Committee, which must be comprised solely of active directors.

     Section 6.  Absence or Disqualification of Any Member of a Committee

          (A)  In the absence or disqualification of any member of any Committee
created under Article III of the By-Laws of this Company, the member or members
thereof present at any meeting and not disqualified from voting, whether or not
he or they constitute a quorum, may unanimously appoint another member of the
Board of Directors to act at the meeting in the place of any such absence or
disqualified member.


                                  ARTICLE IV
                                   OFFICERS

     Section 1.  The Chairman of the Board of Directors shall preside at all
meetings of the Board and shall have such further authority and powers and shall
perform such duties as the Board of Directors may from time to time confer and
direct.  He shall also exercise such powers and perform such duties as may from
time to time be agreed upon between himself and the President of the Company.

     Section 2.  The Vice Chairman of the Board of Directors shall preside at
all

                                       5
<PAGE>
 
meetings of the Board of Directors at which the Chairman of the Board shall not
be present and shall have such further authority and powers and shall perform
such duties as the Board of Directors or the Chairman of the Board may from time
to time confer and direct.

     Section 3. The President shall have the powers and duties pertaining to the
office of the President conferred or imposed upon him by statute or assigned to
him by the Board of Directors in the absence of the Chairman of the Board the
President shall have the powers and duties of the Chairman of the Board.

     Section 4. The Chairman of the Board of Directors or the President as
designated by the Board of Directors, shall carry into effect all legal
directions of the Executive Committee and of the Board of Directors, and shall
at all times exercise general supervision over the interest, affairs and
operations of the Company and perform all duties incident to his office.

     Section 5. There may be one or more Vice Presidents, however denominated by
the Board of Directors, who may at any time perform all the duties of the
Chairman of the Board of Directors and/or the President and such other powers
and duties as may from time to time be assigned to them by the Board of
Directors, the Executive Committee, the Chairman of the Board or the President
and by the officer in charge of the department or division to which they are
assigned.

     Section 6. The Secretary shall attend to the giving of notice of meetings
of the stockholders and the Board of Directors, as well as the Committees
thereof, to the keeping of accurate minutes of all such meetings and to
recording the same in the minute books of the Company. In addition to the other
notice requirements of these By-Laws and as may be practicable under the
circumstances, all such notices shall be in writing and mailed well in advance
of the scheduled date of any other meeting. He shall have custody of the
corporate seal and shall affix the same to any documents requiring such
corporate seal and to attest the same.

     Section 7. The Treasurer shall have general supervision over all assets and
liabilities of the Company. He shall be custodian of and responsible for all
monies, funds and valuables of the Company and for the keeping of proper records
of the evidence of property or indebtedness and of all the transactions of the
Company. He shall have general supervision of the expenditures of the Company
and shall report to the Board of Directors at each regular meeting of the
condition of the Company, and perform such other duties as may be assigned to
him from time to time by the Board of Directors of the Executive Committee.

      Section 8. There may be a Controller who shall exercise general
supervision over the internal operations of the Company, including accounting,
and shall render to the Board of Directors at appropriate times a report
relating to the general condition and internal operations of the Company.

                                       6
<PAGE>
 
     There may be one or more subordinate accounting or controller officers
however denominated, who may perform the duties of the Controller and such
duties as may be prescribed by the Controller.

     Section 9. The officer designated by the Board of Directors to be in charge
of the Audit Division of the Company with such title as the Board of Directors
shall prescribe, shall report to and be directly responsible only to the Board
of Directors.

     There shall be an Auditor and there may be one or more Audit Officers,
however denominated, who may perform all the duties of the Auditor and such
duties as may be prescribed by the officer in charge of the Audit Division.

     Section 10. There may be one or more officers, subordinate in rank to all
Vice Presidents with such functional titles as shall be determined from time to
time by the Board of Directors, who shall ex officio hold the office Assistant
Secretary of this Company and who may perform such duties as may be prescribed
by the officer in charge of the department or division to whom they are
assigned.

     Section 11. The powers and duties of all other officers of the Company
shall be those usually pertaining to their respective offices, subject to the
direction of the Board of Directors, the Executive Committee, Chairman of the
Board of Directors or the President and the officer in charge of the department
or division to which they are assigned.


                                   ARTICLE V
                         STOCK AND STOCK CERTIFICATES

     Section 1. Shares of stock shall be transferrable on the books of the
Company and a transfer book shall be kept in which all transfers of stock shall
be recorded.

     Section 2. Certificate of stock shall bear the signature of the President
or any Vice President, however denominated by the Board of Directors and
countersigned by the Secretary or Treasurer or an Assistant Secretary, and the
seal of the corporation shall be engraved thereon. Each certificate shall recite
that the stock represented thereby is transferrable only upon the books of the
Company by the holder thereof or his attorney, upon surrender of the certificate
properly endorsed. Any certificate of stock surrendered to the Company shall be
cancelled at the time of transfer, and before a new certificate or certificates
shall be issued in lieu thereof. Duplicate certificates of stock shall be issued
only upon giving such security as may be satisfactory to the Board of Directors
or the Executive Committee.

     Section 3. The Board of Directors of the Company is authorized to fix in
advance a record date for the determination of the stockholders entitled to
notice of, and to vote at, any meeting of stockholders and any adjournment
thereof, or entitled to receive payment of

                                       7
<PAGE>
 
any dividend, or to any allotment or rights, or to exercise any rights in
respect of any change, conversion or exchange of capital stock, or in connection
with obtaining the consent of stockholders for any purpose, which record date
shall not be more than 60 nor less than 10 days proceeding the date of any
meeting of stockholders or the date for the payment of any dividend, or the date
for the allotment of rights, or the date when any change or conversion or
exchange of capital stock shall go into effect, or a date in connection with
obtaining such consent.


                                  ARTICLE VI
                                     SEAL

     Section 1. The corporate seal of the Company shall be in the following
form:

              Between two concentric circles the words
              "Wilmington Trust Company" within the inner
              circle the words "Wilmington, Delaware."


                                  ARTICLE VII
                                  FISCAL YEAR

     Section 1.  The fiscal year of the Company shall be the calendar year.


                                 ARTICLE VIII
                    EXECUTION OF INSTRUMENTS OF THE COMPANY

     Section 1. The Chairman of the Board, the President or any Vice President,
however denominated by the Board of Directors, shall have full power and
authority to enter into, make, sign, execute, acknowledge and/or deliver and the
Secretary or any Assistant Secretary shall have full power and authority to
attest and affix the corporate seal of the Company to any and all deeds,
conveyances, assignments, releases, contracts, agreements, bonds, notes,
mortgages and all other instruments incident to the business of this Company or
in acting as executor, administrator, guardian, trustee, agent or in any other
fiduciary or representative capacity by any and every method of appointment or
by whatever person, corporation, court officer or authority in the State of
Delaware, or elsewhere, without any specific authority, ratification, approval
or confirmation by the Board of Directors or the Executive Committee, and any
and all such instruments shall have the same force and validity as although
expressly authorized by the Board of Directors and/or the Executive Committee.

                                       8
<PAGE>
 
                                  ARTICLE IX
              COMPENSATION OF DIRECTORS AND MEMBERS OF COMMITTEES

     Section 1. Directors and associate directors of the Company, other than
salaried officers of the Company, shall be paid such reasonable honoraria or
fees for attending meetings of the Board of Directors as the Board of Directors
may from time to time determine. Directors and associate directors who serve as
members of committees, other than salaried employees of the Company, shall be
paid such reasonable honoraria or fees for services as members of committees as
the Board of Directors shall from time to time determine and directors and
associate directors may be employed by the Company for such special services as
the Board of Directors may from time to time determine and shall be paid for
such special services so performed reasonable compensation as may be determined
by the Board of Directors.


                                   ARTICLE X
                                INDEMNIFICATION

     Section 1. (A) The Corporation shall indemnify and hold harmless, to the
fullest extent permitted by applicable law as it presently exists or may
hereafter be amended, any person who was or is made or is threatened to be made
a party or is otherwise involved in any action, suit or proceeding, whether
civil, criminal, administrative or investigative (a "proceeding") by reason of
the fact that he, or a person for whom he is the legal representative, is or was
a director, officer, employee or agent of the Corporation or is or was serving
at the request of the Corporation as a director, officer, employee, fiduciary or
agent of another corporation or of a partnership, joint venture, trust,
enterprise or non-profit entity, including service with respect to employee
benefit plans, against all liability and loss suffered and expenses reasonably
incurred by such person. The Corporation shall indemnify a person in connection
with a proceeding initiated by such person only if the proceeding was authorized
by the Board of Directors of the Corporation.

          (B)  The Corporation shall pay the expenses incurred in defending any
proceeding in advance of its final disposition, provided, however, that the
                                                --------  -------          
payment of expenses incurred by a Director officer in his capacity as a Director
or officer in advance of the final disposition of the proceeding shall be made
only upon receipt of an undertaking by the Director or officer to repay all
amounts advanced if it should be ultimately determined that the Director or
officer is not entitled to be indemnified under this Article or otherwise.

          (C)  If a claim for indemnification or payment of expenses, under this
Article X is not paid in full within ninety days after a written claim therefor
has been received by the Corporation the claimant may file suit to recover the
unpaid amount of such claim and, if successful in whole or in part, shall be
entitled to be paid the expense of prosecuting such claim.  In any such action
the Corporation shall have the burden of proving

                                       9
<PAGE>
 
that the claimant was not entitled to the requested indemnification of payment
of expenses under applicable law.

          (D) The rights conferred on any person by this Article X shall not be
exclusive of any other rights which such person may have or hereafter acquire
under any statute, provision of the Charter or Act of Incorporation, these By-
Laws, agreement, vote of stockholders or disinterested Directors or otherwise.

          (E) Any repeal or modification of the foregoing provisions of this
Article X shall not adversely affect any right or protection hereunder of any
person in respect of any act or omission occurring prior to the time of such
repeal or modification.


                                   ARTICLE XI
                           AMENDMENTS TO THE BY-LAWS

      Section 1.  These By-Laws may be altered, amended or repealed, in whole or
in part, and any new By-Law or By-Laws adopted at any regular or special meeting
of the Board of Directors by a vote of the majority of all the members of the
Board of Directors then in office.

                                      10
<PAGE>
 
                                                                       EXHIBIT C



                            SECTION 321(B) CONSENT


     Pursuant to Section 321(b) of the Trust Indenture Act of 1939, as amended,
Wilmington Trust Company hereby consents that reports of examinations by
Federal, State, Territorial or District authorities may be furnished by such
authorities to the Securities and Exchange Commission upon requests therefor.



                                      WILMINGTON TRUST COMPANY


Dated: December 9, 1996               By: /s/ Emmett R. Harmon
                                          ------------------------
                                      Name: Emmett R. Harmon
                                      Title: Vice President
<PAGE>
 
                                   EXHIBIT D



                                     NOTICE


          This form is intended to assist state nonmember banks and
          savings banks with state publication requirements. It has
          not been approved by any state banking authorities. Refer to
          your appropriate state banking authorities for your state
          publication requirements.

 
 
R E P O R T  O F   C O N D I T I O N
 
Consolidating domestic subsidiaries of the
 
           WILMINGTON TRUST COMPANY           of      WILMINGTON
- --------------------------------------------        ---------------
                 Name of Bank      City
 
in the State of   DELAWARE  , at the close of business on September 30, 1996.
                ------------
                                          
<TABLE>
<CAPTION> 
ASSETS
<S>                                                                        <C> 
                                                                           Thousands of dollars
Cash and balances due from depository institutions:
     Noninterest-bearing balances and currency and coins..................              198,288
     Interest-bearing balances............................................                    0
Held-to-maturity securities...............................................              489,428
Available-for-sale securities.............................................              783,718
Federal funds sold........................................................               19,000
Securities purchased under agreements to resell...........................               48,500
Loans and lease financing receivables:                                    
     Loans and leases, net of unearned income.............................            3,620,289
     LESS:  Allowance for loan and lease losses...........................               49,721
     LESS:  Allocated transfer risk reserve...............................                    0
     Loans and leases, net of unearned income, allowance, and reserve.....            3,570,568
Assets held in trading accounts...........................................                    0
Premises and fixed assets (including capitalized leases)..................               83,675
Other real estate owned...................................................                4,607
Investments in unconsolidated subsidiaries and associated companies.......                   85
Customers' liability to this bank on acceptances outstanding..............                    0
Intangible assets.........................................................                4,131
Other assets..............................................................              101,592
Total assets..............................................................            5,303,592
</TABLE>

                                                          CONTINUED ON NEXT PAGE
<PAGE>
 
<TABLE>
<CAPTION>
LIABILITIES
<S>                                                                       <C>
Deposits:
In domestic offices.....................................................  3,457,641
      Noninterest-bearing...............    740,731
      Interest-bearing..................  2,716,910
Federal funds purchased.................................................    135,889
Securities sold under agreements to repurchase..........................    213,617
Demand notes issued to the U.S. Treasury................................     94,999
Trading liabilities.....................................................          0
Other borrowed money:...................................................    ///////
      With original maturity of one year or less........................    844,000
      With original maturity of more than one year......................     28,000
Mortgage indebtedness and obligations under capitalized leases..........          0
Bank's liability on acceptances executed and outstanding................          0
Subordinated notes and debentures.......................................          0
Other liabilities.......................................................    103,818
Total liabilities.......................................................  4,877,964
Limited-life preferred stock and related surplus........................          0
 
 
 
EQUITY CAPITAL
 
Perpetual preferred stock and related surplus...........................          0
Common Stock............................................................        500
Surplus.................................................................     62,119
Undivided profits and capital reserves..................................    363,705
Net unrealized holding gains (losses) on available-for-sale securities..       (696)
Total equity capital....................................................    425,628
Total liabilities, limited-life preferred stock, and equity capital.....  5,303,592
</TABLE>

<PAGE>
 
                                                              EXHIBIT 25.2

                                  Registration No.
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------

                      SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C.  20549

                                   FORM T-1

         STATEMENT OF ELIGIBILITY UNDER THE TRUST INDENTURE ACT OF 1939
                 OF A CORPORATION DESIGNATED TO ACT AS TRUSTEE

CHECK IF AN APPLICATION TO DETERMINE ELIGIBILITY OF A TRUSTEE PURSUANT TO
SECTION 305(B)(2)  X
                  ---

                            WILMINGTON TRUST COMPANY
              (Exact name of trustee as specified in its charter)


      Delaware                                         51-0055023
(State of incorporation)                 (I.R.S. employer identification no.)

                              Rodney Square North
                            1100 North Market Street
                          Wilmington, Delaware  19890
                    (Address of principal executive offices)

                               Cynthia L. Corliss
                        Vice President and Trust Counsel
                            Wilmington Trust Company
                              Rodney Square North
                          Wilmington, Delaware  19890
                                 (302) 651-8516
           (Name, address and telephone number of agent for service)

                            FIRST BANK SYSTEM, INC.
                                 FBS CAPITAL I

              (Exact name of obligor as specified in its charter)

        Delaware                                          41-0255900
        Delaware                                          41-6419309
(State of incorporation)                    (I.R.S. employer identification no.)
 
        First Bank Place
     601 Second Avenue South
     Minneapolis, Minnesota                               55402-4302
(Address of principal executive offices)                  (Zip Code)



                      Capital Securities of FBS Capital I
                      (Title of the indenture securities)
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>
 
ITEM 1.    GENERAL INFORMATION.

           Furnish the following information as to the trustee:

      (a)  Name and address of each examining or supervising authority
           to which it is subject.

           Federal Deposit Insurance Co.      State Bank Commissioner
           Five Penn Center                   Dover, Delaware
           Suite #2901
           Philadelphia, PA

      (b)  Whether it is authorized to exercise corporate trust powers.

           The trustee is authorized to exercise corporate trust powers.

ITEM 2.  AFFILIATIONS WITH THE OBLIGOR.

           If the obligor is an affiliate of the trustee, describe each
      affiliation:

           Based upon an examination of the books and records of the trustee and
      upon information furnished by the obligor, the obligor is not an affiliate
      of the trustee.

ITEM 3.  LIST OF EXHIBITS.

           List below all exhibits filed as part of this Statement of
      Eligibility and Qualification.

      A.   Copy of the Charter of Wilmington Trust Company, which includes the
           certificate of authority of Wilmington Trust Company to commence
           business and the authorization of Wilmington Trust Company to
           exercise corporate trust powers.
      B.   Copy of By-Laws of Wilmington Trust Company.
      C.   Consent of Wilmington Trust Company required by Section 321(b) of
           Trust Indenture Act.
      D.   Copy of most recent Report of Condition of Wilmington Trust Company.

      Pursuant to the requirements of the Trust Indenture Act of 1939, as
amended, the trustee, Wilmington Trust Company, a corporation organized and
existing under the laws of Delaware, has duly caused this Statement of
Eligibility to be signed on its behalf by the undersigned, thereunto duly
authorized, all in the City of Wilmington and State of Delaware on the 9th day
of December, 1996.

                                        WILMINGTON TRUST COMPANY
[SEAL]
 
Attest:/s/ W. Chris Sponenberg           By:/s/ Emmett R. Harmon
       -----------------------------        ------------------------
      Assistant Secretary               Name:  Emmett R. Harmon
                                        Title:  Vice President

                                       2
<PAGE>
 
                                   EXHIBIT A

                                AMENDED CHARTER

                            WILMINGTON TRUST COMPANY

                              WILMINGTON, DELAWARE

                           AS EXISTING ON MAY 9, 1987
<PAGE>
 
                                AMENDED CHARTER

                                       OR

                              ACT OF INCORPORATION

                                       OF

                            WILMINGTON TRUST COMPANY

      WILMINGTON TRUST COMPANY, originally incorporated by an Act of the General
Assembly of the State of Delaware, entitled "An Act to Incorporate the Delaware
Guarantee and Trust Company", approved March 2, A.D. 1901, and the name of which
company was changed to "WILMINGTON TRUST COMPANY" by an amendment filed in the
Office of the Secretary of State on March 18, A.D. 1903, and the Charter or Act
of Incorporation of which company has been from time to time amended and changed
by merger agreements pursuant to the corporation law for state banks and trust
companies of the State of Delaware, does hereby alter and amend its Charter or
Act of Incorporation so that the same as so altered and amended shall in its
entirety read as follows:

      FIRST: - The name of this corporation is WILMINGTON TRUST COMPANY.

      SECOND: - The location of its principal office in the State of Delaware is
      at Rodney Square North, in the City of Wilmington, County of New Castle;
      the name of its resident agent is WILMINGTON TRUST COMPANY whose address
      is Rodney Square North, in said City.  In addition to such principal
      office, the said corporation maintains and operates branch offices in the
      City of Newark, New Castle County, Delaware, the Town of Newport, New
      Castle County, Delaware, at Claymont, New Castle County, Delaware, at
      Greenville, New Castle County Delaware, and at Milford Cross Roads, New
      Castle County, Delaware, and shall be empowered to open, maintain and
      operate branch offices at Ninth and Shipley Streets, 418 Delaware Avenue,
      2120 Market Street, and 3605 Market Street, all in the City of Wilmington,
      New Castle County, Delaware, and such other branch offices or places of
      business as may be authorized from time to time by the agency or agencies
      of the government of the State of Delaware empowered to confer such
      authority.

      THIRD: - (a) The nature of the business and the objects and purposes
      proposed to be transacted, promoted or carried on by this Corporation are
      to do any or all of the things herein mentioned as fully and to the same
      extent as natural persons might or could do and in any part of the world,
      viz.:

           (1)  To sue and be sued, complain and defend in any Court of law or
           equity and to make and use a common seal, and alter the seal at
           pleasure, to hold, purchase, convey, mortgage or otherwise deal in
           real and personal estate and property, and to appoint such officers
           and agents as the business of the
<PAGE>
 
           Corporation shall require, to make by-laws not inconsistent with the
           Constitution or laws of the United States or of this State, to
           discount bills, notes or other evidences of debt, to receive deposits
           of money, or securities for money, to buy gold and silver bullion and
           foreign coins, to buy and sell bills of exchange, and generally to
           use, exercise and enjoy all the powers, rights, privileges and
           franchises incident to a corporation which are proper or necessary
           for the transaction of the business of the Corporation hereby
           created.

           (2)  To insure titles to real and personal property, or any estate or
           interests therein, and to guarantee the holder of such property, real
           or personal, against any claim or claims, adverse to his interest
           therein, and to prepare and give certificates of title for any lands
           or premises in the State of Delaware, or elsewhere.

           (3)  To act as factor, agent, broker or attorney in the receipt,
           collection, custody, investment and management of funds, and the
           purchase, sale, management and disposal of property of all
           descriptions, and to prepare and execute all papers which may be
           necessary or proper in such business.

           (4)  To prepare and draw agreements, contracts, deeds, leases,
           conveyances, mortgages, bonds and legal papers of every description,
           and to carry on the business of conveyancing in all its branches.

           (5)  To receive upon deposit for safekeeping money, jewelry, plate,
           deeds, bonds and any and all other personal property of every sort
           and kind, from executors, administrators, guardians, public officers,
           courts, receivers, assignees, trustees, and from all fiduciaries, and
           from all other persons and individuals, and from all corporations
           whether state, municipal, corporate or private, and to rent boxes,
           safes, vaults and other receptacles for such property.

           (6)  To act as agent or otherwise for the purpose of registering,
           issuing, certificating, countersigning, transferring or underwriting
           the stock, bonds or other obligations of any corporation,
           association, state or municipality, and may receive and manage any
           sinking fund therefor on such terms as may be agreed upon between the
           two parties, and in like manner may act as Treasurer of any
           corporation or municipality.

           (7)  To act as Trustee under any deed of trust, mortgage, bond or
           other instrument issued by any state, municipality, body politic,
           corporation, association or person, either alone or in conjunction
           with any other person or persons, corporation or corporations.

                                       2
<PAGE>
 
           (8)  To guarantee the validity, performance or effect of any contract
           or agreement, and the fidelity of persons holding places of
           responsibility or trust; to become surety for any person, or persons,
           for the faithful performance of any trust, office, duty, contract or
           agreement, either by itself or in conjunction with any other person,
           or persons, corporation, or corporations, or in like manner become
           surety upon any bond, recognizance, obligation, judgment, suit,
           order, or decree to be entered in any court of record within the
           State of Delaware or elsewhere, or which may now or hereafter be
           required by any law, judge, officer or court in the State of Delaware
           or elsewhere.

           (9)  To act by any and every method of appointment as trustee,
           trustee in bankruptcy, receiver, assignee, assignee in bankruptcy,
           executor, administrator, guardian, bailee, or in any other trust
           capacity in the receiving, holding, managing, and disposing of any
           and all estates and property, real, personal or mixed, and to be
           appointed as such trustee, trustee in bankruptcy, receiver, assignee,
           assignee in bankruptcy, executor, administrator, guardian or bailee
           by any persons, corporations, court, officer, or authority, in the
           State of Delaware or elsewhere; and whenever this Corporation is so
           appointed by any person, corporation, court, officer or authority
           such trustee, trustee in bankruptcy, receiver, assignee, assignee in
           bankruptcy, executor, administrator, guardian, bailee, or in any
           other trust capacity, it shall not be required to give bond with
           surety, but its capital stock shall be taken and held as security for
           the performance of the duties devolving upon it by such appointment.

           (10)  And for its care, management and trouble, and the exercise of
           any of its powers hereby given, or for the performance of any of the
           duties which it may undertake or be called upon to perform, or for
           the assumption of any responsibility the said Corporation may be
           entitled to receive a proper compensation.

           (11)  To purchase, receive, hold and own bonds, mortgages,
           debentures, shares of capital stock, and other securities,
           obligations, contracts and evidences of indebtedness, of any private,
           public or municipal corporation within and without the State of
           Delaware, or of the Government of the United States, or of any state,
           territory, colony, or possession thereof, or of any foreign
           government or country; to receive, collect, receipt for, and dispose
           of interest, dividends and income upon and from any of the bonds,
           mortgages, debentures, notes, shares of capital stock, securities,
           obligations, contracts, evidences of indebtedness and other property
           held and owned by it, and to exercise in respect of all such bonds,
           mortgages, debentures, notes, shares of capital stock, securities,
           obligations, contracts, evidences of indebtedness and other property,
           any and all the rights, powers and privileges of individual

                                       3
<PAGE>
 
           owners thereof, including the right to vote thereon; to invest and
           deal in and with any of the moneys of the Corporation upon such
           securities and in such manner as it may think fit and proper, and
           from time to time to vary or realize such investments; to issue bonds
           and secure the same by pledges or deeds of trust or mortgages of or
           upon the whole or any part of the property held or owned by the
           Corporation, and to sell and pledge such bonds, as and when the Board
           of Directors shall determine, and in the promotion of its said
           corporate business of investment and to the extent authorized by law,
           to lease, purchase, hold, sell, assign, transfer, pledge, mortgage
           and convey real and personal property of any name and nature and any
           estate or interest therein.

      (b)  In furtherance of, and not in limitation, of the powers conferred by
      the laws of the State of Delaware, it is hereby expressly provided that
      the said Corporation shall also have the following powers:

           (1)  To do any or all of the things herein set forth, to the same
           extent as natural persons might or could do, and in any part of the
           world.

           (2)  To acquire the good will, rights, property and franchises and to
           undertake the whole or any part of  the assets and liabilities of any
           person, firm, association or corporation, and to pay for the same in
           cash, stock of this Corporation, bonds or otherwise; to hold or in
           any manner to dispose of the whole or any part of the property so
           purchased; to conduct in any lawful manner the whole or any part of
           any business so acquired, and to exercise all the powers necessary or
           convenient in and about the conduct and management of such business.

           (3)  To take, hold, own, deal in, mortgage or otherwise lien, and to
           lease, sell, exchange, transfer, or in any manner whatever dispose of
           property, real, personal or mixed, wherever situated.

           (4)  To enter into, make, perform and carry out contracts of every
           kind with any person, firm, association or corporation, and, without
           limit as to amount, to draw, make, accept, endorse, discount,
           execute and issue promissory notes, drafts, bills of exchange,
           warrants, bonds, debentures, and other negotiable or transferable
           instruments.

           (5)  To have one or more offices, to carry on all or any of its
           operations and businesses, without restriction to the same extent as
           natural persons might or could do, to purchase or otherwise acquire,
           to hold, own, to mortgage, sell, convey or otherwise dispose of, real
           and personal property, of every class and description, in any State,
           District, Territory or Colony of the United States, and in any
           foreign country or place.

                                       4
<PAGE>
 
           (6)  It is the intention that the objects, purposes and powers
           specified and clauses contained in this paragraph shall (except where
           otherwise expressed in said paragraph) be nowise limited or
           restricted by reference to or inference from the terms of any other
           clause of this or any other paragraph in this charter, but that the
           objects, purposes and powers specified in each of the clauses of this
           paragraph shall be regarded as independent objects, purposes and
           powers.

      FOURTH: - (a)  The total number of shares of all classes of stock which
      the Corporation shall have authority to issue is forty-one million
      (41,000,000) shares, consisting of:

           (1)  One million (1,000,000) shares of Preferred stock, par value
           $10.00 per share (hereinafter referred to as "Preferred Stock"); and

           (2)  Forty million (40,000,000) shares of Common Stock, par value
           $1.00 per share (hereinafter referred to as "Common Stock").

      (b)  Shares of Preferred Stock may be issued from time to time in one or
      more series as may from time to time be determined by the Board of
      Directors each of said series to be distinctly designated.  All shares of
      any one series of Preferred Stock shall be alike in every particular,
      except that there may be different dates from which dividends, if any,
      thereon shall be cumulative, if made cumulative.  The voting powers and
      the preferences and relative, participating, optional and other special
      rights of each such series, and the qualifications, limitations or
      restrictions thereof, if any, may differ from those of any and all other
      series at any time outstanding; and, subject to the provisions of
      subparagraph 1 of Paragraph (c) of this Article FOURTH, the Board of
      Directors of the Corporation is hereby expressly granted authority to fix
      by resolution or resolutions adopted prior to the issuance of any shares
      of a particular series of Preferred Stock, the voting powers and the
      designations, preferences and relative, optional and other special rights,
      and the qualifications, limitations and restrictions of such series,
      including, but without limiting the generality of the foregoing, the
      following:

           (1)  The distinctive designation of, and the number of shares of
           Preferred Stock which shall constitute such series, which number may
           be increased (except where otherwise provided by the Board of
           Directors) or decreased (but not below the number of shares thereof
           then outstanding) from time to time by like action of the Board of
           Directors;

           (2)  The rate and times at which, and the terms and conditions on
           which, dividends, if any, on Preferred Stock of such series shall be
           paid, the extent of the preference or relation, if any, of such
           dividends to the dividends payable on any other class or classes, or
           series of the same or other class of

                                       5
<PAGE>
 
           stock and whether such dividends shall be cumulative or non-
           cumulative;

           (3)  The right, if any, of the holders of Preferred Stock of such
           series to convert the same into or exchange the same for, shares of
           any other class or classes or of any series of the same or any other
           class or classes of stock of the Corporation and the terms and
           conditions of such conversion or exchange;

           (4)  Whether or not Preferred Stock of such series shall be subject
           to redemption, and the redemption price or prices and the time or
           times at which, and the terms and conditions on which, Preferred
           Stock of such series may be redeemed.

           (5)  The rights, if any, of the holders of Preferred Stock of such
           series upon the voluntary or involuntary liquidation, merger,
           consolidation, distribution or sale of assets, dissolution or
           winding-up, of the Corporation.

           (6)  The terms of the sinking fund or redemption or purchase account,
           if any, to be provided for the Preferred Stock of such series; and

           (7)  The voting powers, if any, of the holders of such series of
           Preferred Stock which may, without limiting the generality of the
           foregoing include the right, voting as a series or by itself or
           together with other series of Preferred Stock or all series of
           Preferred Stock as a class, to elect one or more directors of the
           Corporation if there shall have been a default in the payment of
           dividends on any one or more series of Preferred Stock or under such
           circumstances and on such conditions as the Board of Directors may
           determine.

      (c)  (1)  After the requirements with respect to preferential dividends on
      the Preferred Stock (fixed in accordance with the provisions of section
      (b) of this Article FOURTH), if any, shall have been met and after the
      Corporation shall have complied with all the requirements, if any, with
      respect to the setting aside of sums as sinking funds or redemption or
      purchase accounts (fixed in accordance with the provisions of section (b)
      of this Article FOURTH), and subject further to any conditions which may
      be fixed in accordance with the provisions of section (b) of this Article
      FOURTH, then and not otherwise the holders of Common Stock shall be
      entitled to receive such dividends as may be declared from time to time by
      the Board of Directors.

           (2)  After distribution in full of the preferential amount, if any,
           (fixed in accordance with the provisions of section (b) of this
           Article FOURTH), to be distributed to the holders of Preferred Stock
           in the event of voluntary or involuntary liquidation, distribution or
           sale of assets, dissolution or winding-up, of the Corporation, the
           holders of the Common Stock shall be entitled to

                                       6
<PAGE>
 
           receive all of the remaining assets of the Corporation, tangible and
           intangible, of whatever kind available for distribution to
           stockholders ratably in proportion to the number of shares of Common
           Stock held by them respectively.

           (3)  Except as may otherwise be required by law or by the provisions
           of such resolution or resolutions as may be adopted by the Board of
           Directors pursuant to section (b) of this Article FOURTH, each holder
           of Common Stock shall have one vote in respect of each share of
           Common Stock held on all matters voted upon by the stockholders.

      (d)  No holder of any of the shares of any class or series of stock or of
      options, warrants or other rights to purchase shares of any class or
      series of stock or of other securities of the Corporation shall have any
      preemptive right to purchase or subscribe for any unissued stock of any
      class or series or any additional shares of any class or series to be
      issued by reason of any increase of the authorized capital stock of the
      Corporation of any class or series, or bonds, certificates of
      indebtedness, debentures or other securities convertible into or
      exchangeable for stock of the Corporation of any class or series, or
      carrying any right to purchase stock of any class or series, but any such
      unissued stock, additional authorized issue of shares of any class or
      series of stock or securities convertible into or exchangeable for stock,
      or carrying any right to purchase stock, may be issued and disposed of
      pursuant to resolution of the Board of Directors to such persons, firms,
      corporations or associations, whether such holders or others, and upon
      such terms as may be deemed advisable by the Board of Directors in the
      exercise of its sole discretion.

      (e)  The relative powers, preferences and rights of each series of
      Preferred Stock in relation to the relative powers, preferences and rights
      of each other series of Preferred Stock shall, in each case, be as fixed
      from time to time by the Board of Directors in the resolution or
      resolutions adopted pursuant to authority granted in section (b) of this
      Article FOURTH and the consent, by class or series vote or otherwise, of
      the holders of such of the series of Preferred Stock as are from time to
      time outstanding shall not be required for the issuance by the Board of
      Directors of any other series of Preferred Stock whether or not the
      powers, preferences and rights of such other series shall be fixed by the
      Board of Directors as senior to, or on a parity with, the powers,
      preferences and rights of such outstanding series, or any of them;
      provided, however, that the Board of Directors may provide in the
      resolution or resolutions as to any series of Preferred Stock adopted
      pursuant to section (b) of this Article FOURTH that the consent of the
      holders of a majority (or such greater proportion as shall be therein
      fixed) of the outstanding shares of such series voting thereon shall be
      required for the issuance of any or all other series of Preferred Stock.

                                       7
<PAGE>
 
      (f)  Subject to the provisions of section (e), shares of any series of
      Preferred Stock may be issued from time to time as the Board of Directors
      of the Corporation shall determine and on such terms and for such
      consideration as shall be fixed by the Board of Directors.

      (g)  Shares of Common Stock may be issued from time to time as the Board
      of Directors of the Corporation shall determine and on such terms and for
      such consideration as shall be fixed by the Board of Directors.

      (h)  The authorized amount of shares of Common Stock and of Preferred
      Stock may, without a class or series vote, be increased or decreased from
      time to time by the affirmative vote of the holders of a majority of the
      stock of the Corporation entitled to vote thereon.

      FIFTH: - (a)  The business and affairs of the Corporation shall be
      conducted and managed by a Board of Directors.  The number of directors
      constituting the entire Board shall be not less than five nor more than
      twenty-five as fixed from time to time by vote of a majority of the whole
      Board, provided, however, that the number of directors shall not be
      reduced so as to shorten the term of any director at the time in office,
      and provided further, that the number of directors constituting the whole
      Board shall be twenty-four until otherwise fixed by a majority of the
      whole Board.

      (b)  The Board of Directors shall be divided into three classes, as nearly
      equal in number as the then total number of directors constituting the
      whole Board permits, with the term of office of one class expiring each
      year.  At the annual meeting of stockholders in 1982, directors of the
      first class shall be elected to hold office for a term expiring at the
      next succeeding annual meeting, directors of the second class shall be
      elected to hold office for a term expiring at the second succeeding annual
      meeting and directors of the third class shall be elected to hold office
      for a term expiring at the third succeeding annual meeting.  Any vacancies
      in the Board of Directors for any reason, and any newly created
      directorships resulting from any increase in the directors, may be filled
      by the Board of Directors, acting by a majority of the directors then in
      office, although less than a quorum, and any directors so chosen shall
      hold office until the next annual election of directors.  At such
      election, the stockholders shall elect a successor to such director to
      hold office until the next election of the class for which such director
      shall have been chosen and until his successor shall be elected and
      qualified.  No decrease in the number of directors shall shorten the term
      of any incumbent director.

      (c)  Notwithstanding any other provisions of this Charter or Act of
      Incorporation or the By-Laws of the Corporation (and notwithstanding the
      fact that some lesser percentage may be specified by law, this Charter or
      Act of Incorporation or the By-Laws of the Corporation), any director or
      the entire Board of Directors of the

                                       8
<PAGE>
 
      Corporation may be removed at any time without cause, but only by the
      affirmative vote of the holders of two-thirds or more of the outstanding
      shares of capital stock of the Corporation entitled to vote generally in
      the election of directors (considered for this purpose as one class) cast
      at a meeting of the stockholders called for that purpose.

      (d)  Nominations for the election of directors may be made by the Board of
      Directors or by any stockholder entitled to vote for the election of
      directors.  Such nominations shall be made by notice in writing, delivered
      or mailed by first class United States mail, postage prepaid, to the
      Secretary of the Corporation not less than 14 days nor more than 50 days
      prior to any meeting of the stockholders called for the election of
      directors; provided, however, that if less than 21 days' notice of the
      meeting is given to stockholders, such written notice shall be delivered
      or mailed, as prescribed, to the Secretary of the Corporation not later
      than the close of the seventh day following the day on which notice of the
      meeting was mailed to stockholders.  Notice of nominations which are
      proposed by the Board of Directors shall be given by the Chairman on
      behalf of the Board.

      (e)  Each notice under subsection (d) shall set forth (i) the name, age,
      business address and, if known, residence address of each nominee proposed
      in such notice, (ii) the principal occupation or employment of such
      nominee and (iii) the number of shares of stock of the Corporation which
      are beneficially owned by each such nominee.

      (f)  The Chairman of the meeting may, if the facts warrant, determine and
      declare to the meeting that a nomination was not made in accordance with
      the foregoing procedure, and if he should so determine, he shall so
      declare to the meeting and the defective nomination shall be disregarded.

      (g)  No action required to be taken or which may be taken at any annual or
      special meeting of stockholders of the Corporation may be taken without a
      meeting, and the power of stockholders to consent in writing, without a
      meeting, to the taking of any action is specifically denied.

      SIXTH: - The Directors shall choose such officers, agent and servants as
      may be provided in the By-Laws as they may from time to time find
      necessary or proper.

      SEVENTH: - The Corporation hereby created is hereby given the same powers,
      rights and privileges as may be conferred upon corporations organized
      under the Act entitled "An Act Providing a General Corporation Law",
      approved March 10, 1899, as from time to time amended.

      EIGHTH: - This Act shall be deemed and taken to be a private Act.

                                       9
<PAGE>
 
      NINTH: - This Corporation is to have perpetual existence.

      TENTH: - The Board of Directors, by resolution passed by a majority of the
      whole Board, may designate any of their number to constitute an Executive
      Committee, which Committee, to the extent provided in said resolution, or
      in the By-Laws of the Company, shall have and may exercise all of the
      powers of the Board of Directors in the management of the business and
      affairs of the Corporation, and shall have power to authorize the seal of
      the Corporation to be affixed to all papers which may require it.

      ELEVENTH: - The private property of the stockholders shall not be liable
      for the payment of corporate debts to any extent whatever.

      TWELFTH: - The Corporation may transact business in any part of the world.

      THIRTEENTH: - The Board of Directors of the Corporation is expressly
      authorized to make, alter or repeal the By-Laws of the Corporation by a
      vote of the majority of the entire Board.  The stockholders may make,
      alter or repeal any By-Law whether or not adopted by them, provided
      however, that any such additional By-Laws, alterations or repeal may be
      adopted only by the affirmative vote of the holders of two-thirds or more
      of the outstanding shares of capital stock of the Corporation entitled to
      vote generally in the election of directors (considered for this purpose
      as one class).

      FOURTEENTH: - Meetings of the Directors may be held outside of the State
      of Delaware at such places as may be from time to time designated by the
      Board, and the Directors may keep the books of the Company outside of the
      State of Delaware at such places as may be from time to time designated by
      them.

      FIFTEENTH: - (a) In addition to any affirmative vote required by law, and
      except as otherwise expressly provided in sections (b) and (c) of this
      Article FIFTEENTH:

           (A)  any merger or consolidation of the Corporation or any Subsidiary
           (as hereinafter defined) with or into (i) any Interested Stockholder
           (as hereinafter defined) or (ii) any other corporation (whether or
           not itself an Interested Stockholder), which, after such merger or
           consolidation, would be an Affiliate (as hereinafter defined) of an
           Interested Stockholder, or

           (B)  any sale, lease, exchange, mortgage, pledge, transfer or other
           disposition (in one transaction or a series of related transactions)
           to or with any Interested Stockholder or any Affiliate of any
           Interested Stockholder of any assets of the Corporation or any
           Subsidiary having an aggregate fair market value of $1,000,000 or
           more, or

                                      10
<PAGE>
 
           (C)  the issuance or transfer by the Corporation or any Subsidiary
           (in one transaction or a series of related transactions) of any
           securities of the Corporation or any Subsidiary to any Interested
           Stockholder or any Affiliate of any Interested Stockholder in
           exchange for cash, securities or other property (or a combination
           thereof) having an aggregate fair market value of $1,000,000 or more,
           or

           (D)  the adoption of any plan or proposal for the liquidation or
           dissolution of the Corporation, or

           (E)  any reclassification of securities (including any reverse stock
           split), or recapitalization of the Corporation, or any merger or
           consolidation of the Corporation with any of its Subsidiaries or any
           similar transaction (whether or not with or into or otherwise
           involving an Interested Stockholder) which has the effect, directly
           or indirectly, of increasing the proportionate share of the
           outstanding shares of any class of equity or convertible securities
           of the Corporation or any Subsidiary which is directly or indirectly
           owned by any Interested Stockholder, or any Affiliate of any
           Interested Stockholder,

shall require the affirmative vote of the holders of at least  two-thirds of the
outstanding shares of capital stock of the Corporation entitled to vote
generally in the election of directors, considered for the purpose of this
Article FIFTEENTH as one class ("Voting Shares").  Such affirmative vote shall
be required notwithstanding the fact that no vote may be required, or that some
lesser percentage may be specified, by law or in any agreement with any national
securities exchange or otherwise.

            (2)  The term "business combination" as used in this Article
            FIFTEENTH shall mean any transaction which is referred to any one or
            more of clauses (A) through (E) of paragraph 1 of the section (a).

           (b)  The provisions of section (a) of this Article FIFTEENTH shall
           not be applicable to any particular business combination and such
           business combination shall require only such affirmative vote as is
           required by law and any other provisions of the Charter or Act of
           Incorporation of By-Laws if such business combination has been
           approved by a majority of the whole Board.

           (c)  For the purposes of this Article FIFTEENTH:

      (1)  A "person" shall mean any individual firm, corporation or other
      entity.

      (2)  "Interested Stockholder" shall mean, in respect of any business
      combination, any person (other than the Corporation or any Subsidiary) who
      or which as of the record date for the determination of stockholders
      entitled to notice of and to vote on


                                      11
<PAGE>
 
      such business combination, or immediately prior to the consummation of any
      such transaction:

           (A)  is the beneficial owner, directly or indirectly, of more than
           10% of the Voting Shares, or

           (B)  is an Affiliate of the Corporation and at any time within two
           years prior thereto was the beneficial owner, directly or indirectly,
           of not less than 10% of the then outstanding voting Shares, or

           (C)  is an assignee of or has otherwise succeeded in any share of
           capital stock of the Corporation which were at any time within two
           years prior thereto beneficially owned by any Interested Stockholder,
           and such assignment or succession shall have occurred in the course
           of a transaction or series of transactions not involving a public
           offering within the meaning of the Securities Act of 1933.

      (3)  A person shall be the "beneficial owner" of any Voting Shares:

           (A)  which such person or any of its Affiliates and Associates (as
           hereafter defined) beneficially own, directly or indirectly, or

           (B)  which such person or any of its Affiliates or Associates has (i)
           the right to acquire (whether such right is exercisable immediately
           or only after the passage of time), pursuant to any agreement,
           arrangement or understanding or upon the exercise of conversion
           rights, exchange rights, warrants or options, or otherwise, or (ii)
           the right to vote pursuant to any agreement, arrangement or
           understanding, or

           (C)  which are beneficially owned, directly or indirectly, by any
           other person with which such first mentioned person or any of its
           Affiliates or Associates has any agreement, arrangement or
           understanding for the purpose of acquiring, holding, voting or
           disposing of any shares of capital stock of the Corporation.

      (4)  The outstanding Voting Shares shall include shares deemed owned
      through application of paragraph (3) above but shall not include any other
      Voting Shares which may be issuable pursuant to any agreement, or upon
      exercise of conversion rights, warrants or options or otherwise.

      (5)  "Affiliate" and "Associate" shall have the respective meanings given
      those terms in Rule 12b-2 of the General Rules and Regulations under the
      Securities Exchange Act of 1934, as in effect on December 31, 1981.

                                      12
<PAGE>
 
      (6)  "Subsidiary" shall mean any corporation of which a majority of any
      class of equity security (as defined in Rule 3a11-1 of the General Rules
      and Regulations under the Securities Exchange Act of 1934, as in effect in
      December 31, 1981) is owned, directly or indirectly, by the Corporation;
      provided, however, that for the purposes of the definition of Investment
      Stockholder set forth in paragraph (2) of this section (c), the term
      "Subsidiary" shall mean only a corporation of which a majority of each
      class of equity security is owned, directly or indirectly, by the
      Corporation.

           (d)  majority of the directors shall have the power and duty to
           determine for the purposes of this Article FIFTEENTH on the basis of
           information known to them, (1) the number of Voting Shares
           beneficially owned by any person (2) whether a person is an Affiliate
           or Associate of another, (3) whether a person has an agreement,
           arrangement or understanding with another as to the matters referred
           to in paragraph (3) of section (c), or (4) whether the assets subject
           to any business combination or the consideration received for the
           issuance or transfer of securities by the Corporation, or any
           Subsidiary has an aggregate fair market value of $1,000,000 or more.

           (e)  Nothing contained in this Article FIFTEENTH shall be construed
           to relieve any Interested Stockholder from any fiduciary obligation
           imposed by law.

      SIXTEENTH:   Notwithstanding any other provision of this Charter or Act of
      Incorporation or the By-Laws of the Corporation (and in addition to any
      other vote that may be required by law, this Charter or Act of
      Incorporation by the By-Laws), the affirmative vote of the holders of at
      least two-thirds of the outstanding shares of the capital stock of the
      Corporation entitled to vote generally in the election of directors
      (considered for this purpose as one class) shall be required to amend,
      alter or repeal any provision of Articles FIFTH, THIRTEENTH, FIFTEENTH or
      SIXTEENTH of this Charter or Act of Incorporation.

      SEVENTEENTH: (a)  a Director of this Corporation shall not be liable to
      the Corporation or its stockholders for monetary damages for breach of
      fiduciary duty as a Director, except to the extent such exemption from
      liability or limitation thereof is not permitted under the Delaware
      General Corporation Laws as the same exists or may hereafter be amended.

           (b)  Any repeal or modification of the foregoing paragraph shall not
           adversely affect any right or protection of a Director of the
           Corporation existing hereunder with respect to any act or omission
           occurring prior to the time of such repeal or modification."

                                      13
<PAGE>
 
                                   EXHIBIT B

                                    BY-LAWS

                           WILMINGTON TRUST COMPANY

                             WILMINGTON, DELAWARE

                       AS EXISTING ON DECEMBER 21, 1995
<PAGE>
 
                      BY-LAWS OF WILMINGTON TRUST COMPANY


                                   ARTICLE I
                            STOCKHOLDERS' MEETINGS

      Section 1.  The Annual Meeting of Stockholders shall be held on the third
Thursday in April each year at the principal office at the Company or at such
other date, time, or place as may be designated by resolution by the Board of
Directors.

      Section 2.  Special meetings of all stockholders may be called at any time
by the Board of Directors, the Chairman of the Board or the President.

      Section 3.  Notice of all meetings of the stockholders shall be given by
mailing to each stockholder at least ten (10 days before said meeting, at his
last known address, a written or printed notice fixing the time and place of
such meeting.

      Section 4.  A majority in the amount of the capital stock of the Company
issued and outstanding on the record date, as herein determined, shall
constitute a quorum at all meetings of stockholders for the transaction of any
business, but the holders of a small number of shares may adjourn, from time to
time, without further notice, until a quorum is secured.  At each annual or
special meeting of stockholders, each stockholder shall be entitled to one vote,
either in person or by proxy, for each shares of stock registered in the
stockholder's name on the books of the Company on the record date for any such
meeting as determined herein.


                                  ARTICLE II
                                   DIRECTORS

      Section 1.  The number and classification of the Board of Directors shall
be as set forth in the Charter of the Bank.

      Section 2.  No person who has attained the age of seventy-two (72) years
shall be nominated for election to the Board of Directors of the Company,
provided, however, that this limitation shall not apply to any person who was
serving as director of the Company on September 16, 1971.

      Section 3.  The class of Directors so elected shall hold office for three
years or until their successors are elected and qualified.

      Section 4.  The affairs and business of the Company shall be managed and
conducted by the Board of Directors.

      Section 5.  Regular meetings of the Board of Directors shall be held on
the third Thursday of each month at the principal office of the Company, or at
such other place and
<PAGE>
 
time as may be designated by the Board of Directors, the Chairman of the Board,
or the President.

      Section 6.  Special meetings of the Board of Directors may be called at
any time by the Chairman of the Board of Directors or by the President, and
shall be called upon the written request of a majority of the directors.

      Section 7.  A majority of the directors elected and qualified shall be
necessary to constitute a quorum for the transaction of business at any meeting
of the Board of Directors.

      Section 8.  Written notice shall be sent by mail to each director of any
special meeting of the Board of Directors, and of any change in the time or
place of any regular meeting, stating the time and place of such meeting, which
shall be mailed not less than two days before the time of holding such meeting.

      Section 9.  In the event of the death, resignation, removal, inability to
act, or disqualification of any director, the Board of Directors, although less
than a quorum, shall have the right to elect the successor who shall hold office
for the remainder of the full term of the class of directors in which the
vacancy occurred, and until such director's successor shall have been duly
elected and qualified.

      Section 10.  The Board of Directors at its first meeting after its
election by the stockholders shall appoint an Executive Committee, a Trust
Committee, an Audit Committee and a Compensation Committee, and shall elect from
its own members a Chairman of the Board of Directors and a President who may be
the same person.  The Board of Directors shall also elect at such meeting a
Secretary and a Treasurer, who may be the same person, may appoint at any time
such other committees and elect or appoint such other officers as it may deem
advisable.  The Board of Directors may also elect at such meeting one or more
Associate Directors.

      Section 11.  The Board of Directors may at any time remove, with or
without cause, any member of any Committee appointed by it or any associate
director or officer elected by it and may appoint or elect his successor.

      Section 12.  The Board of Directors may designate an officer to be in
charge of such of the departments or division of the Company as it may deem
advisable.


                                  ARTICLE III
                                  COMMITTEES

      Section I.  Executive Committee

          (A)  The Executive Committee shall be composed of not more than nine

                                       2
<PAGE>
 
members who shall be selected by the Board of Directors from its own members and
who shall hold office during the pleasure of the Board.

          (B)  The Executive Committee shall have all the powers of the Board of
Directors when it is not in session to transact all business for and in behalf
of the Company that may be brought before it.

          (C)  The Executive Committee shall meet at the principal office of the
Company or elsewhere in its discretion at such times to be determined by a
majority of its members, or at the call of the Chairman of the Executive
Committee or at the call of the Chairman of the Board of Directors.  The
majority of its members shall be necessary to constitute a quorum for the
transaction of business.  Special meetings of the Executive Committee may be
held at any time when a quorum is present.

          (D)  Minutes of each meeting of the Executive Committee shall be kept
and submitted to the Board of Directors at its next meeting.

          (E)  The Executive Committee shall advise and superintend all
investments that may be made of the funds of the Company, and shall direct the
disposal of the same, in accordance with such rules and regulations as the Board
of Directors from time to time make.

          (F)  In the event of a state of disaster of sufficient severity to
prevent the conduct and management of the affairs and business of the Company by
its directors and officers as contemplated by these By-Laws any two available
members of the Executive Committee as constituted immediately prior to such
disaster shall constitute a quorum of that Committee for the full conduct and
management of the affairs and business of the Company in accordance with the
provisions of Article III of these By-Laws; and if less than three members of
the Trust Committee is constituted immediately prior to such disaster shall be
available for the transaction of its business, such Executive Committee shall
also be empowered to exercise all of the powers reserved to the Trust Committee
under Article III Section 2 hereof.  In the event of the unavailability, at such
time, of a minimum of two members of such Executive Committee, any three
available directors shall constitute the Executive Committee for the full
conduct and management of the affairs and business of the Company in accordance
with the foregoing provisions of this Section.  This By-Law shall be subject to
implementation by Resolutions of the Board of Directors presently existing or
hereafter passed from time to time for that purpose, and any provisions of these
By-Laws (other than this Section) and any resolutions which are contrary to the
provisions of this Section or to the provisions of any such implementary
Resolutions shall be suspended during such a disaster period until it shall be
determined by any interim Executive Committee acting under this section that it
shall be to the advantage of the Company to resume the conduct and management of
its affairs and business under all of the other provisions of these By-Laws.

                                       3
<PAGE>
 
      Section 2.  Trust Committee
 
          (A)  The Trust Committee shall be composed of not more than thirteen
members who shall be selected by the Board of Directors, a majority of whom
shall be members of the Board of Directors and who shall hold office during the
pleasure of the Board.

          (B)  The Trust Committee shall have general supervision over the Trust
Department and the investment of trust funds, in all matters, however, being
subject to the approval of the Board of Directors.

          (C)  The Trust Committee shall meet at the principal office of the
Company or elsewhere in its discretion at least once a month.  A majority of its
members shall be necessary to constitute a quorum for the transaction of
business.  Special meetings of the Trust Committee may be held at any time when
a quorum is present.

          (D)  Minutes of each meeting of the Trust Committee shall be kept
and promptly submitted to the Board of Directors.
 
          (E)  The Trust Committee shall have the power to appoint Committees
and/or designate officers or employees of the Company to whom supervision over
the investment of trust funds may be delegated when the Trust Committee is not
in session.

      Section 3.  Audit Committee

          (A)  The Audit Committee shall be composed of five members who shall
be selected by the Board of Directors from its own members, none of whom shall
be an officer of the Company, and shall hold office at the pleasure of the
Board.

          (B)  The Audit Committee shall have general supervision over the Audit
Division in all matters however subject to the approval of the Board of
Directors; it shall consider all matters brought to its attention by the officer
in charge of the Audit Division, review all reports of examination of the
Company made by any governmental agency or such independent auditor employed for
that purpose, and make such recommendations to the Board of Directors with
respect thereto or with respect to any other matters pertaining to auditing the
Company as it shall deem desirable.

          (C)  The Audit Committee shall meet whenever and wherever the majority
of its members shall deem it to be proper for the transaction of its business,
and a majority of its Committee shall constitute a quorum.

      Section 4.  Compensation Committee

          (A)  The Compensation Committee shall be composed of not more than

                                       4
<PAGE>
 
five (5) members who shall be selected by the Board of Directors from its own
members who are not officers of the Company and who shall hold office during the
pleasure of the Board.

          (B)  The Compensation Committee shall in general advise upon all
matters of policy concerning the Company brought to its attention by the
management and from time to time review the management of the Company, major
organizational matters, including salaries and employee benefits and
specifically shall administer the Executive Incentive Compensation Plan.

          (C)  Meetings of the Compensation Committee may be called at any time
by the Chairman of the Compensation Committee, the Chairman of the Board of
Directors, or the President of the Company.

      Section 5.  Associate Directors

          (A)  Any person who has served as a director may be elected by the
Board of Directors as an associate director, to serve during the pleasure of the
Board.

          (B)  An associate director shall be entitled to attend all directors
meetings and participate in the discussion of all matters brought to the Board,
with the exception that he would have no right to vote.  An associate director
will be eligible for appointment to Committees of the Company, with the
exception of the Executive Committee, Audit Committee and Compensation
Committee, which must be comprised solely of active directors.

      Section 6.  Absence or Disqualification of Any Member of a Committee

          (A)  In the absence or disqualification of any member of any Committee
created under Article III of the By-Laws of this Company, the member or members
thereof present at any meeting and not disqualified from voting, whether or not
he or they constitute a quorum, may unanimously appoint another member of the
Board of Directors to act at the meeting in the place of any such absence or
disqualified member.


                                  ARTICLE IV
                                   OFFICERS

      Section 1.  The Chairman of the Board of Directors shall preside at all
meetings of the Board and shall have such further authority and powers and shall
perform such duties as the Board of Directors may from time to time confer and
direct.  He shall also exercise such powers and perform such duties as may from
time to time be agreed upon between himself and the President of the Company.

      Section 2.  The Vice Chairman of the Board of Directors shall preside at
all

                                       5
<PAGE>
 
meetings of the Board of Directors at which the Chairman of the Board shall not
be present and shall have such further authority and powers and shall perform
such duties as the Board of Directors or the Chairman of the Board may from time
to time confer and direct.

      Section 3.  The President shall have the powers and duties pertaining to
the office of the President conferred or imposed upon him by statute or assigned
to him by the Board of Directors in the absence of the Chairman of the Board the
President shall have the powers and duties of the Chairman of the Board.

      Section 4.  The Chairman of the Board of Directors or the President as
designated by the Board of Directors, shall carry into effect all legal
directions of the Executive Committee and of the Board of Directors, and shall
at all times exercise general supervision over the interest, affairs and
operations of the Company and perform all duties incident to his office.

      Section 5.  There may be one or more Vice Presidents, however denominated
by the Board of Directors, who may at any time perform all the duties of the
Chairman of the Board of Directors and/or the President and such other powers
and duties as may from time to time be assigned to them by the Board of
Directors, the Executive Committee, the Chairman of the Board or the President
and by the officer in charge of the department or division to which they are
assigned.

      Section 6.  The Secretary shall attend to the giving of notice of meetings
of the stockholders and the Board of Directors, as well as the Committees
thereof, to the keeping of accurate minutes of all such meetings and to
recording the same in the minute books of the Company.  In addition to the other
notice requirements of these By-Laws and as may be practicable under the
circumstances, all such notices shall be in writing and mailed well in advance
of the scheduled date of any other meeting.  He shall have custody of the
corporate seal and shall affix the same to any documents requiring such
corporate seal and to attest the same.

      Section 7.  The Treasurer shall have general supervision over all assets
and liabilities of the Company.  He shall be custodian of and responsible for
all monies, funds and valuables of the Company and for the keeping of proper
records of the evidence of property or indebtedness and of all the transactions
of the Company.  He shall have general supervision of the expenditures of the
Company and shall report to the Board of Directors at each regular meeting of
the condition of the Company, and perform such other duties as may be assigned
to him from time to time by the Board of Directors of the Executive Committee.

      Section 8.  There may be a Controller who shall exercise general
supervision over the internal operations of the Company, including accounting,
and shall render to the Board of Directors at appropriate times a report
relating to the general condition and internal operations of the Company.

                                       6
<PAGE>
 
      There may be one or more subordinate accounting or controller officers
however denominated, who may perform the duties of the Controller and such
duties as may be prescribed by the Controller.

      Section 9.  The officer designated by the Board of Directors to be in
charge of the Audit Division of the Company with such title as the Board of
Directors shall prescribe, shall report to and be directly responsible only to
the Board of Directors.

      There shall be an Auditor and there may be one or more Audit Officers,
however denominated, who may perform all the duties of the Auditor and such
duties as may be prescribed by the officer in charge of the Audit Division.

      Section 10.  There may be one or more officers, subordinate in rank to all
Vice Presidents with such functional titles as shall be determined from time to
time by the Board of Directors, who shall ex officio hold the office Assistant
Secretary of this Company and who may perform such duties as may be prescribed
by the officer in charge of the department or division to whom they are
assigned.

      Section 11.  The powers and duties of all other officers of the Company
shall be those usually pertaining to their respective offices, subject to the
direction of the Board of Directors, the Executive Committee, Chairman of the
Board of Directors or the President and the officer in charge of the department
or division to which they are assigned.


                                   ARTICLE V
                         STOCK AND STOCK CERTIFICATES

      Section 1.  Shares of stock shall be transferrable on the books of the
Company and a transfer book shall be kept in which all transfers of stock shall
be recorded.

      Section 2.  Certificate of stock shall bear the signature of the President
or any Vice President, however denominated by the Board of Directors and
countersigned by the Secretary or Treasurer or an Assistant Secretary, and the
seal of the corporation shall be engraved thereon.  Each certificate shall
recite that the stock represented thereby is transferrable only upon the books
of the Company by the holder thereof or his attorney, upon surrender of the
certificate properly endorsed.  Any certificate of stock surrendered to the
Company shall be cancelled at the time of transfer, and before a new certificate
or certificates shall be issued in lieu thereof.  Duplicate certificates of
stock shall be issued only upon giving such security as may be satisfactory to
the Board of Directors or the Executive Committee.

      Section 3.  The Board of Directors of the Company is authorized to fix in
advance a record date for the determination of the stockholders entitled to
notice of, and to vote at, any meeting of stockholders and any adjournment
thereof, or entitled to receive payment of

                                       7
<PAGE>
 
any dividend, or to any allotment or rights, or to exercise any rights in
respect of any change, conversion or exchange of capital stock, or in connection
with obtaining the consent of stockholders for any purpose, which record date
shall not be more than 60 nor less than 10 days proceeding the date of any
meeting of stockholders or the date for the payment of any dividend, or the date
for the allotment of rights, or the date when any change or conversion or
exchange of capital stock shall go into effect, or a date in connection with
obtaining such consent.


                                  ARTICLE VI
                                     SEAL

      Section 1.  The corporate seal of the Company shall be in the following
form:

                   Between two concentric circles the words
                  "Wilmington Trust Company" within the inner
                   circle the words "Wilmington, Delaware."


                                  ARTICLE VII
                                  FISCAL YEAR

      Section 1.  The fiscal year of the Company shall be the calendar year.


                                 ARTICLE VIII
                    EXECUTION OF INSTRUMENTS OF THE COMPANY

      Section 1.  The Chairman of the Board, the President or any Vice
President, however denominated by the Board of Directors, shall have full power
and authority to enter into, make, sign, execute, acknowledge and/or deliver and
the Secretary or any Assistant Secretary shall have full power and authority to
attest and affix the corporate seal of the Company to any and all deeds,
conveyances, assignments, releases, contracts, agreements, bonds, notes,
mortgages and all other instruments incident to the business of this Company or
in acting as executor, administrator, guardian, trustee, agent or in any other
fiduciary or representative capacity by any and every method of appointment or
by whatever person, corporation, court officer or authority in the State of
Delaware, or elsewhere, without any specific authority, ratification, approval
or confirmation by the Board of Directors or the Executive Committee, and any
and all such instruments shall have the same force and validity as although
expressly authorized by the Board of Directors and/or the Executive Committee.

                                       8
<PAGE>
 
                                  ARTICLE IX
              COMPENSATION OF DIRECTORS AND MEMBERS OF COMMITTEES

      Section 1.  Directors and associate directors of the Company, other than
salaried officers of the Company, shall be paid such reasonable honoraria or
fees for attending meetings of the Board of Directors as the Board of Directors
may from time to time determine.  Directors and associate directors who serve as
members of committees, other than salaried employees of the Company, shall be
paid such reasonable honoraria or fees for services as members of committees as
the Board of Directors shall from time to time determine and directors and
associate directors may be employed by the Company for such special services as
the Board of Directors may from time to time determine and shall be paid for
such special services so performed reasonable compensation as may be determined
by the Board of Directors.


                                   ARTICLE X
                                INDEMNIFICATION

      Section 1.  (A)  The Corporation shall indemnify and hold harmless, to the
fullest extent permitted by applicable law as it presently exists or may
hereafter be amended, any person who was or is made or is threatened to be made
a party or is otherwise involved in any action, suit or proceeding, whether
civil, criminal, administrative or investigative (a "proceeding") by reason of
the fact that he, or a person for whom he is the legal representative, is or was
a director, officer, employee or agent of the Corporation or is or was serving
at the request of the Corporation as a director, officer, employee, fiduciary or
agent of another corporation or of a partnership, joint venture, trust,
enterprise or non-profit entity, including service with respect to employee
benefit plans, against all liability and loss suffered and expenses reasonably
incurred by such person.  The Corporation shall indemnify a person in connection
with a proceeding initiated by such person only if the proceeding was authorized
by the Board of Directors of the Corporation.

          (B)  The Corporation shall pay the expenses incurred in defending any
proceeding in advance of its final disposition, provided, however, that the
                                                --------  -------          
payment of expenses incurred by a Director officer in his capacity as a Director
or officer in advance of the final disposition of the proceeding shall be made
only upon receipt of an undertaking by the Director or officer to repay all
amounts advanced if it should be ultimately determined that the Director or
officer is not entitled to be indemnified under this Article or otherwise.

          (C)  If a claim for indemnification or payment of expenses, under this
Article X is not paid in full within ninety days after a written claim therefor
has been received by the Corporation the claimant may file suit to recover the
unpaid amount of such claim and, if successful in whole or in part, shall be
entitled to be paid the expense of prosecuting such claim.  In any such action
the Corporation shall have the burden of proving

                                       9
<PAGE>
 
that the claimant was not entitled to the requested indemnification of payment
of expenses under applicable law.

          (D)  The rights conferred on any person by this Article X shall not be
exclusive of any other rights which such person may have or hereafter acquire
under any statute, provision of the Charter or Act of Incorporation, these By-
Laws, agreement, vote of stockholders or disinterested Directors or otherwise.

          (E)  Any repeal or modification of the foregoing provisions of this
Article X shall not adversely affect any right or protection hereunder of any
person in respect of any act or omission occurring prior to the time of such
repeal or modification.


                                  ARTICLE XI
                           AMENDMENTS TO THE BY-LAWS

      Section 1.  These By-Laws may be altered, amended or repealed, in whole or
in part, and any new By-Law or By-Laws adopted at any regular or special meeting
of the Board of Directors by a vote of the majority of all the members of the
Board of Directors then in office.

                                      10
<PAGE>
 
                                                                       EXHIBIT C



                            SECTION 321(B) CONSENT


      Pursuant to Section 321(b) of the Trust Indenture Act of 1939, as amended,
Wilmington Trust Company hereby consents that reports of examinations by
Federal, State, Territorial or District authorities may be furnished by such
authorities to the Securities and Exchange Commission upon requests therefor.



                                    WILMINGTON TRUST COMPANY


Dated: December 9, 1996             By: /s/ Emmett R. Harmon
                                        ------------------------
                                    Name: Emmett R. Harmon
                                    Title: Vice President
<PAGE>
 
                                   EXHIBIT D



                                    NOTICE


          This form is intended to assist state nonmember banks and savings
          banks with state publication requirements.  It has not been approved
          by any state banking authorities.  Refer to your appropriate state
          banking authorities for your state publication requirements.

R E P O R T  O F  C O N D I T I O N
 
Consolidating domestic subsidiaries of the
 
           WILMINGTON TRUST COMPANY           of               WILMINGTON
- --------------------------------------------          --------------------------
       Name of Bank                 City
 
in the State of    DELAWARE  , at the close of business on September 30, 1996.
               --------------
                            
<TABLE> 
<CAPTION> 
ASSETS
<S>                                                                           <C> 
                                                                              Thousands of dollars

Cash and balances due from depository institutions:
      Noninterest-bearing balances and currency and coins.................                 198,288
      Interest-bearing balances...........................................                       0
Held-to-maturity securities...............................................                 489,428
Available-for-sale securities.............................................                 783,718
Federal funds sold........................................................                  19,000
Securities purchased under agreements to resell...........................                  48,500
Loans and lease financing receivables:                                    
      Loans and leases, net of unearned income............................               3,620,289
      LESS:  Allowance for loan and lease losses..........................                  49,721
      LESS:  Allocated transfer risk reserve..............................                       0
      Loans and leases, net of unearned income, allowance, and reserve....               3,570,568
Assets held in trading accounts...........................................                       0
Premises and fixed assets (including capitalized leases)..................                  83,675
Other real estate owned...................................................                   4,607
Investments in unconsolidated subsidiaries and associated companies.......                      85
Customers' liability to this bank on acceptances outstanding..............                       0
Intangible assets.........................................................                   4,131
Other assets..............................................................                 101,592
Total assets..............................................................               5,303,592
</TABLE>

                                                         CONTINUED ON NEXT PAGE
<PAGE>

<TABLE>
<CAPTION>  
LIABILITIES
<S>                                                                       <C>
Deposits:
In domestic offices.....................................................  3,457,641
      Noninterest-bearing...............................................    740,731
      Interest-bearing..................................................  2,716,910
Federal funds purchased.................................................    135,889
Securities sold under agreements to repurchase..........................    213,617
Demand notes issued to the U.S. Treasury................................     94,999
Trading liabilities.....................................................          0
Other borrowed money:...................................................    ///////
      With original maturity of one year or less........................    844,000
      With original maturity of more than one year......................     28,000
Mortgage indebtedness and obligations under capitalized leases..........          0
Bank's liability on acceptances executed and outstanding................          0
Subordinated notes and debentures.......................................          0
Other liabilities.......................................................    103,818
Total liabilities.......................................................  4,877,964
Limited-life preferred stock and related surplus........................          0
 
 
EQUITY CAPITAL

Perpetual preferred stock and related surplus...........................          0
Common Stock............................................................        500
Surplus.................................................................     62,119
Undivided profits and capital reserves..................................    363,705
Net unrealized holding gains (losses) on available-for-sale securities..       (696)
Total equity capital....................................................    425,628
Total liabilities, limited-life preferred stock, and equity capital.....  5,303,592
</TABLE>

                                       2

<PAGE>
 
                                                                    EXHIBIT 25.3

                                  Registration No.
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------

                      SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C.  20549

                                   FORM T-1

        STATEMENT OF ELIGIBILITY UNDER THE TRUST INDENTURE ACT OF 1939
                 OF A CORPORATION DESIGNATED TO ACT AS TRUSTEE

CHECK IF AN APPLICATION TO DETERMINE ELIGIBILITY OF A TRUSTEE PURSUANT TO
SECTION 305(B)(2)  X
                  ---

                           WILMINGTON TRUST COMPANY
              (Exact name of trustee as specified in its charter)


        Delaware                                      51-0055023
(State of incorporation)                 (I.R.S. employer identification no.)

                              Rodney Square North
                           1100 North Market Street
                          Wilmington, Delaware  19890
                   (Address of principal executive offices)

                              Cynthia L. Corliss
                       Vice President and Trust Counsel
                           Wilmington Trust Company
                              Rodney Square North
                          Wilmington, Delaware  19890
                                (302) 651-8516
           (Name, address and telephone number of agent for service)

                            FIRST BANK SYSTEM, INC.

              (Exact name of obligor as specified in its charter)

        Delaware                                    41-0255900
(State of incorporation)               (I.R.S. employer identification no.)

      First Bank Place
    601 Second Avenue South
    Minneapolis, Minnesota                                55402-4302
(Address of principal executive offices)                 (Zip Code)



               First Bank System, Inc. Guarantee with respect to
                      Capital Securities of FBS Capital I
                      (Title of the indenture securities)
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>
 
ITEM 1.    GENERAL INFORMATION.

           Furnish the following information as to the trustee:

     (a)   Name and address of each examining or supervising authority
           to which it is subject.

           Federal Deposit Insurance Co.      State Bank Commissioner
           Five Penn Center                   Dover, Delaware
           Suite #2901
           Philadelphia, PA

     (b)   Whether it is authorized to exercise corporate trust powers.

           The trustee is authorized to exercise corporate trust powers.

ITEM 2.  AFFILIATIONS WITH THE OBLIGOR.

           If the obligor is an affiliate of the trustee, describe each
     affiliation:

           Based upon an examination of the books and records of the trustee and
     upon information furnished by the obligor, the obligor is not an affiliate
     of the trustee.

ITEM 3.  LIST OF EXHIBITS.

           List below all exhibits filed as part of this Statement of
     Eligibility and Qualification.

     A.    Copy of the Charter of Wilmington Trust Company, which includes the
           certificate of authority of Wilmington Trust Company to commence
           business and the authorization of Wilmington Trust Company to
           exercise corporate trust powers.
     B.    Copy of By-Laws of Wilmington Trust Company.
     C.    Consent of Wilmington Trust Company required by Section 321(b) of
           Trust Indenture Act.
     D.    Copy of most recent Report of Condition of Wilmington Trust Company.

     Pursuant to the requirements of the Trust Indenture Act of 1939, as
amended, the trustee, Wilmington Trust Company, a corporation organized and
existing under the laws of Delaware, has duly caused this Statement of
Eligibility to be signed on its behalf by the undersigned, thereunto duly
authorized, all in the City of Wilmington and State of Delaware on the 9th day
of December, 1996.

                                         WILMINGTON TRUST COMPANY
[SEAL]
 
Attest:/s/ W. Chris Sponenberg           By:/s/ Emmett R. Harmon
       -----------------------------        ------------------------
       Assistant Secretary               Name:  Emmett R. Harmon
                                         Title:  Vice President

                                       2
<PAGE>
 
                                   EXHIBIT A

                                AMENDED CHARTER

                           WILMINGTON TRUST COMPANY

                             WILMINGTON, DELAWARE

                          AS EXISTING ON MAY 9, 1987
<PAGE>
 
                                AMENDED CHARTER

                                       OR

                              ACT OF INCORPORATION

                                       OF

                            WILMINGTON TRUST COMPANY

     WILMINGTON TRUST COMPANY, originally incorporated by an Act of the General
Assembly of the State of Delaware, entitled "An Act to Incorporate the Delaware
Guarantee and Trust Company", approved March 2, A.D. 1901, and the name of which
company was changed to "WILMINGTON TRUST COMPANY" by an amendment filed in the
Office of the Secretary of State on March 18, A.D. 1903, and the Charter or Act
of Incorporation of which company has been from time to time amended and changed
by merger agreements pursuant to the corporation law for state banks and trust
companies of the State of Delaware, does hereby alter and amend its Charter or
Act of Incorporation so that the same as so altered and amended shall in its
entirety read as follows:

     FIRST: - The name of this corporation is WILMINGTON TRUST COMPANY.

     SECOND: - The location of its principal office in the State of Delaware is
     at Rodney Square North, in the City of Wilmington, County of New Castle;
     the name of its resident agent is WILMINGTON TRUST COMPANY whose address is
     Rodney Square North, in said City. In addition to such principal office,
     the said corporation maintains and operates branch offices in the City of
     Newark, New Castle County, Delaware, the Town of Newport, New Castle
     County, Delaware, at Claymont, New Castle County, Delaware, at Greenville,
     New Castle County Delaware, and at Milford Cross Roads, New Castle County,
     Delaware, and shall be empowered to open, maintain and operate branch
     offices at Ninth and Shipley Streets, 418 Delaware Avenue, 2120 Market
     Street, and 3605 Market Street, all in the City of Wilmington, New Castle
     County, Delaware, and such other branch offices or places of business as
     may be authorized from time to time by the agency or agencies of the
     government of the State of Delaware empowered to confer such authority.

     THIRD: - (a) The nature of the business and the objects and purposes
     proposed to be transacted, promoted or carried on by this Corporation are
     to do any or all of the things herein mentioned as fully and to the same
     extent as natural persons might or could do and in any part of the world,
     viz.:

           (1)  To sue and be sued, complain and defend in any Court of law or
           equity and to make and use a common seal, and alter the seal at
           pleasure, to hold, purchase, convey, mortgage or otherwise deal in
           real and personal estate and property, and to appoint such officers
           and agents as the business of the
<PAGE>
 
           Corporation shall require, to make by-laws not inconsistent with the
           Constitution or laws of the United States or of this State, to
           discount bills, notes or other evidences of debt, to receive deposits
           of money, or securities for money, to buy gold and silver bullion and
           foreign coins, to buy and sell bills of exchange, and generally to
           use, exercise and enjoy all the powers, rights, privileges and
           franchises incident to a corporation which are proper or necessary
           for the transaction of the business of the Corporation hereby
           created.

           (2)  To insure titles to real and personal property, or any estate or
           interests therein, and to guarantee the holder of such property, real
           or personal, against any claim or claims, adverse to his interest
           therein, and to prepare and give certificates of title for any lands
           or premises in the State of Delaware, or elsewhere.

           (3)  To act as factor, agent, broker or attorney in the receipt,
           collection, custody, investment and management of funds, and the
           purchase, sale, management and disposal of property of all
           descriptions, and to prepare and execute all papers which may be
           necessary or proper in such business.

           (4)  To prepare and draw agreements, contracts, deeds, leases,
           conveyances, mortgages, bonds and legal papers of every description,
           and to carry on the business of conveyancing in all its branches.

           (5)  To receive upon deposit for safekeeping money, jewelry, plate,
           deeds, bonds and any and all other personal property of every sort
           and kind, from executors, administrators, guardians, public officers,
           courts, receivers, assignees, trustees, and from all fiduciaries, and
           from all other persons and individuals, and from all corporations
           whether state, municipal, corporate or private, and to rent boxes,
           safes, vaults and other receptacles for such property.

           (6)  To act as agent or otherwise for the purpose of registering,
           issuing, certificating, countersigning, transferring or underwriting
           the stock, bonds or other obligations of any corporation,
           association, state or municipality, and may receive and manage any
           sinking fund therefor on such terms as may be agreed upon between the
           two parties, and in like manner may act as Treasurer of any
           corporation or municipality.

           (7)  To act as Trustee under any deed of trust, mortgage, bond or
           other instrument issued by any state, municipality, body politic,
           corporation, association or person, either alone or in conjunction
           with any other person or persons, corporation or corporations.

                                       2
<PAGE>
 
           (8)  To guarantee the validity, performance or effect of any contract
           or agreement, and the fidelity of persons holding places of
           responsibility or trust; to become surety for any person, or persons,
           for the faithful performance of any trust, office, duty, contract or
           agreement, either by itself or in conjunction with any other person,
           or persons, corporation, or corporations, or in like manner become
           surety upon any bond, recognizance, obligation, judgment, suit,
           order, or decree to be entered in any court of record within the
           State of Delaware or elsewhere, or which may now or hereafter be
           required by any law, judge, officer or court in the State of Delaware
           or elsewhere.

           (9)  To act by any and every method of appointment as trustee,
           trustee in bankruptcy, receiver, assignee, assignee in bankruptcy,
           executor, administrator, guardian, bailee, or in any other trust
           capacity in the receiving, holding, managing, and disposing of any
           and all estates and property, real, personal or mixed, and to be
           appointed as such trustee, trustee in bankruptcy, receiver, assignee,
           assignee in bankruptcy, executor, administrator, guardian or bailee
           by any persons, corporations, court, officer, or authority, in the
           State of Delaware or elsewhere; and whenever this Corporation is so
           appointed by any person, corporation, court, officer or authority
           such trustee, trustee in bankruptcy, receiver, assignee, assignee in
           bankruptcy, executor, administrator, guardian, bailee, or in any
           other trust capacity, it shall not be required to give bond with
           surety, but its capital stock shall be taken and held as security for
           the performance of the duties devolving upon it by such appointment.

           (10)  And for its care, management and trouble, and the exercise of
           any of its powers hereby given, or for the performance of any of the
           duties which it may undertake or be called upon to perform, or for
           the assumption of any responsibility the said Corporation may be
           entitled to receive a proper compensation.

           (11)  To purchase, receive, hold and own bonds, mortgages,
           debentures, shares of capital stock, and other securities,
           obligations, contracts and evidences of indebtedness, of any private,
           public or municipal corporation within and without the State of
           Delaware, or of the Government of the United States, or of any state,
           territory, colony, or possession thereof, or of any foreign
           government or country; to receive, collect, receipt for, and dispose
           of interest, dividends and income upon and from any of the bonds,
           mortgages, debentures, notes, shares of capital stock, securities,
           obligations, contracts, evidences of indebtedness and other property
           held and owned by it, and to exercise in respect of all such bonds,
           mortgages, debentures, notes, shares of capital stock, securities,
           obligations, contracts, evidences of indebtedness and other property,
           any and all the rights, powers and privileges of individual

                                       3
<PAGE>
 
           owners thereof, including the right to vote thereon; to invest and
           deal in and with any of the moneys of the Corporation upon such
           securities and in such manner as it may think fit and proper, and
           from time to time to vary or realize such investments; to issue bonds
           and secure the same by pledges or deeds of trust or mortgages of or
           upon the whole or any part of the property held or owned by the
           Corporation, and to sell and pledge such bonds, as and when the Board
           of Directors shall determine, and in the promotion of its said
           corporate business of investment and to the extent authorized by law,
           to lease, purchase, hold, sell, assign, transfer, pledge, mortgage
           and convey real and personal property of any name and nature and any
           estate or interest therein.

      (b)  In furtherance of, and not in limitation, of the powers conferred by
      the laws of the State of Delaware, it is hereby expressly provided that
      the said Corporation shall also have the following powers:

           (1)  To do any or all of the things herein set forth, to the same
           extent as natural persons might or could do, and in any part of the
           world.

           (2)  To acquire the good will, rights, property and franchises and to
           undertake the whole or any part of  the assets and liabilities of any
           person, firm, association or corporation, and to pay for the same in
           cash, stock of this Corporation, bonds or otherwise; to hold or in
           any manner to dispose of the whole or any part of the property so
           purchased; to conduct in any lawful manner the whole or any part of
           any business so acquired, and to exercise all the powers necessary or
           convenient in and about the conduct and management of such business.

           (3)  To take, hold, own, deal in, mortgage or otherwise lien, and to
           lease, sell, exchange, transfer, or in any manner whatever dispose of
           property, real, personal or mixed, wherever situated.

           (4)  To enter into, make, perform and carry out contracts of every
           kind with any person, firm, association or corporation, and, without
           limit as to amount, to draw, make, accept, endorse, discount,
           execute and issue promissory notes, drafts, bills of exchange,
           warrants, bonds, debentures, and other negotiable or transferable
           instruments.

           (5)  To have one or more offices, to carry on all or any of its
           operations and businesses, without restriction to the same extent as
           natural persons might or could do, to purchase or otherwise acquire,
           to hold, own, to mortgage, sell, convey or otherwise dispose of, real
           and personal property, of every class and description, in any State,
           District, Territory or Colony of the United States, and in any
           foreign country or place.

                                       4
<PAGE>
 
           (6)  It is the intention that the objects, purposes and powers
           specified and clauses contained in this paragraph shall (except where
           otherwise expressed in said paragraph) be nowise limited or
           restricted by reference to or inference from the terms of any other
           clause of this or any other paragraph in this charter, but that the
           objects, purposes and powers specified in each of the clauses of this
           paragraph shall be regarded as independent objects, purposes and
           powers.

     FOURTH: - (a) The total number of shares of all classes of stock which the
     Corporation shall have authority to issue is forty-one million (41,000,000)
     shares, consisting of:

           (1)  One million (1,000,000) shares of Preferred stock, par value
           $10.00 per share (hereinafter referred to as "Preferred Stock"); and

           (2)  Forty million (40,000,000) shares of Common Stock, par value
           $1.00 per share (hereinafter referred to as "Common Stock").

     (b)  Shares of Preferred Stock may be issued from time to time in one or
     more series as may from time to time be determined by the Board of
     Directors each of said series to be distinctly designated. All shares of
     any one series of Preferred Stock shall be alike in every particular,
     except that there may be different dates from which dividends, if any,
     thereon shall be cumulative, if made cumulative. The voting powers and the
     preferences and relative, participating, optional and other special rights
     of each such series, and the qualifications, limitations or restrictions
     thereof, if any, may differ from those of any and all other series at any
     time outstanding; and, subject to the provisions of subparagraph 1 of
     Paragraph (c) of this Article FOURTH, the Board of Directors of the
     Corporation is hereby expressly granted authority to fix by resolution or
     resolutions adopted prior to the issuance of any shares of a particular
     series of Preferred Stock, the voting powers and the designations,
     preferences and relative, optional and other special rights, and the
     qualifications, limitations and restrictions of such series, including, but
     without limiting the generality of the foregoing, the following:

           (1)  The distinctive designation of, and the number of shares of
           Preferred Stock which shall constitute such series, which number may
           be increased (except where otherwise provided by the Board of
           Directors) or decreased (but not below the number of shares thereof
           then outstanding) from time to time by like action of the Board of
           Directors;

           (2)  The rate and times at which, and the terms and conditions on
           which, dividends, if any, on Preferred Stock of such series shall be
           paid, the extent of the preference or relation, if any, of such
           dividends to the dividends payable on any other class or classes, or
           series of the same or other class of

                                       5
<PAGE>
 
           stock and whether such dividends shall be cumulative or non-
           cumulative;

           (3)  The right, if any, of the holders of Preferred Stock of such
           series to convert the same into or exchange the same for, shares of
           any other class or classes or of any series of the same or any other
           class or classes of stock of the Corporation and the terms and
           conditions of such conversion or exchange;

           (4)  Whether or not Preferred Stock of such series shall be subject
           to redemption, and the redemption price or prices and the time or
           times at which, and the terms and conditions on which, Preferred
           Stock of such series may be redeemed.

           (5)  The rights, if any, of the holders of Preferred Stock of such
           series upon the voluntary or involuntary liquidation, merger,
           consolidation, distribution or sale of assets, dissolution or
           winding-up, of the Corporation.

           (6)  The terms of the sinking fund or redemption or purchase account,
           if any, to be provided for the Preferred Stock of such series; and

           (7)  The voting powers, if any, of the holders of such series of
           Preferred Stock which may, without limiting the generality of the
           foregoing include the right, voting as a series or by itself or
           together with other series of Preferred Stock or all series of
           Preferred Stock as a class, to elect one or more directors of the
           Corporation if there shall have been a default in the payment of
           dividends on any one or more series of Preferred Stock or under such
           circumstances and on such conditions as the Board of Directors may
           determine.

     (c)  (1) After the requirements with respect to preferential dividends on
     the Preferred Stock (fixed in accordance with the provisions of section (b)
     of this Article FOURTH), if any, shall have been met and after the
     Corporation shall have complied with all the requirements, if any, with
     respect to the setting aside of sums as sinking funds or redemption or
     purchase accounts (fixed in accordance with the provisions of section (b)
     of this Article FOURTH), and subject further to any conditions which may be
     fixed in accordance with the provisions of section (b) of this Article
     FOURTH, then and not otherwise the holders of Common Stock shall be
     entitled to receive such dividends as may be declared from time to time by
     the Board of Directors.

           (2)  After distribution in full of the preferential amount, if any,
           (fixed in accordance with the provisions of section (b) of this
           Article FOURTH), to be distributed to the holders of Preferred Stock
           in the event of voluntary or involuntary liquidation, distribution or
           sale of assets, dissolution or winding-up, of the Corporation, the
           holders of the Common Stock shall be entitled to

                                       6
<PAGE>
 
           receive all of the remaining assets of the Corporation, tangible and
           intangible, of whatever kind available for distribution to
           stockholders ratably in proportion to the number of shares of Common
           Stock held by them respectively.

           (3)  Except as may otherwise be required by law or by the provisions
           of such resolution or resolutions as may be adopted by the Board of
           Directors pursuant to section (b) of this Article FOURTH, each holder
           of Common Stock shall have one vote in respect of each share of
           Common Stock held on all matters voted upon by the stockholders.

     (d)  No holder of any of the shares of any class or series of stock or of
     options, warrants or other rights to purchase shares of any class or series
     of stock or of other securities of the Corporation shall have any
     preemptive right to purchase or subscribe for any unissued stock of any
     class or series or any additional shares of any class or series to be
     issued by reason of any increase of the authorized capital stock of the
     Corporation of any class or series, or bonds, certificates of indebtedness,
     debentures or other securities convertible into or exchangeable for stock
     of the Corporation of any class or series, or carrying any right to
     purchase stock of any class or series, but any such unissued stock,
     additional authorized issue of shares of any class or series of stock or
     securities convertible into or exchangeable for stock, or carrying any
     right to purchase stock, may be issued and disposed of pursuant to
     resolution of the Board of Directors to such persons, firms, corporations
     or associations, whether such holders or others, and upon such terms as may
     be deemed advisable by the Board of Directors in the exercise of its sole
     discretion.

     (e)  The relative powers, preferences and rights of each series of
     Preferred Stock in relation to the relative powers, preferences and rights
     of each other series of Preferred Stock shall, in each case, be as fixed
     from time to time by the Board of Directors in the resolution or
     resolutions adopted pursuant to authority granted in section (b) of this
     Article FOURTH and the consent, by class or series vote or otherwise, of
     the holders of such of the series of Preferred Stock as are from time to
     time outstanding shall not be required for the issuance by the Board of
     Directors of any other series of Preferred Stock whether or not the powers,
     preferences and rights of such other series shall be fixed by the Board of
     Directors as senior to, or on a parity with, the powers, preferences and
     rights of such outstanding series, or any of them; provided, however, that
     the Board of Directors may provide in the resolution or resolutions as to
     any series of Preferred Stock adopted pursuant to section (b) of this
     Article FOURTH that the consent of the holders of a majority (or such
     greater proportion as shall be therein fixed) of the outstanding shares of
     such series voting thereon shall be required for the issuance of any or all
     other series of Preferred Stock.

                                       7
<PAGE>
 
     (f)  Subject to the provisions of section (e), shares of any series of
     Preferred Stock may be issued from time to time as the Board of Directors
     of the Corporation shall determine and on such terms and for such
     consideration as shall be fixed by the Board of Directors.

     (g)  Shares of Common Stock may be issued from time to time as the Board of
     Directors of the Corporation shall determine and on such terms and for such
     consideration as shall be fixed by the Board of Directors.

     (h)  The authorized amount of shares of Common Stock and of Preferred Stock
     may, without a class or series vote, be increased or decreased from time to
     time by the affirmative vote of the holders of a majority of the stock of
     the Corporation entitled to vote thereon.

     FIFTH: - (a)  The business and affairs of the Corporation shall be
     conducted and managed by a Board of Directors. The number of directors
     constituting the entire Board shall be not less than five nor more than
     twenty-five as fixed from time to time by vote of a majority of the whole
     Board, provided, however, that the number of directors shall not be reduced
     so as to shorten the term of any director at the time in office, and
     provided further, that the number of directors constituting the whole Board
     shall be twenty-four until otherwise fixed by a majority of the whole
     Board.

     (b)  The Board of Directors shall be divided into three classes, as nearly
     equal in number as the then total number of directors constituting the
     whole Board permits, with the term of office of one class expiring each
     year. At the annual meeting of stockholders in 1982, directors of the first
     class shall be elected to hold office for a term expiring at the next
     succeeding annual meeting, directors of the second class shall be elected
     to hold office for a term expiring at the second succeeding annual meeting
     and directors of the third class shall be elected to hold office for a term
     expiring at the third succeeding annual meeting. Any vacancies in the Board
     of Directors for any reason, and any newly created directorships resulting
     from any increase in the directors, may be filled by the Board of
     Directors, acting by a majority of the directors then in office, although
     less than a quorum, and any directors so chosen shall hold office until the
     next annual election of directors. At such election, the stockholders shall
     elect a successor to such director to hold office until the next election
     of the class for which such director shall have been chosen and until his
     successor shall be elected and qualified. No decrease in the number of
     directors shall shorten the term of any incumbent director.

     (c)  Notwithstanding any other provisions of this Charter or Act of
     Incorporation or the By-Laws of the Corporation (and notwithstanding the
     fact that some lesser percentage may be specified by law, this Charter or
     Act of Incorporation or the By-Laws of the Corporation), any director or
     the entire Board of Directors of the

                                       8
<PAGE>
 
     Corporation may be removed at any time without cause, but only by the
     affirmative vote of the holders of two-thirds or more of the outstanding
     shares of capital stock of the Corporation entitled to vote generally in
     the election of directors (considered for this purpose as one class) cast
     at a meeting of the stockholders called for that purpose.

     (d)  Nominations for the election of directors may be made by the Board of
     Directors or by any stockholder entitled to vote for the election of
     directors. Such nominations shall be made by notice in writing, delivered
     or mailed by first class United States mail, postage prepaid, to the
     Secretary of the Corporation not less than 14 days nor more than 50 days
     prior to any meeting of the stockholders called for the election of
     directors; provided, however, that if less than 21 days' notice of the
     meeting is given to stockholders, such written notice shall be delivered or
     mailed, as prescribed, to the Secretary of the Corporation not later than
     the close of the seventh day following the day on which notice of the
     meeting was mailed to stockholders. Notice of nominations which are
     proposed by the Board of Directors shall be given by the Chairman on behalf
     of the Board.

     (e)  Each notice under subsection (d) shall set forth (i) the name, age,
     business address and, if known, residence address of each nominee proposed
     in such notice, (ii) the principal occupation or employment of such nominee
     and (iii) the number of shares of stock of the Corporation which are
     beneficially owned by each such nominee.

     (f)  The Chairman of the meeting may, if the facts warrant, determine and
     declare to the meeting that a nomination was not made in accordance with
     the foregoing procedure, and if he should so determine, he shall so declare
     to the meeting and the defective nomination shall be disregarded.

     (g)  No action required to be taken or which may be taken at any annual or
     special meeting of stockholders of the Corporation may be taken without a
     meeting, and the power of stockholders to consent in writing, without a
     meeting, to the taking of any action is specifically denied.

     SIXTH: - The Directors shall choose such officers, agent and servants as
     may be provided in the By-Laws as they may from time to time find necessary
     or proper.

     SEVENTH: - The Corporation hereby created is hereby given the same powers,
     rights and privileges as may be conferred upon corporations organized under
     the Act entitled "An Act Providing a General Corporation Law", approved
     March 10, 1899, as from time to time amended.

     EIGHTH: - This Act shall be deemed and taken to be a private Act.

                                       9
<PAGE>
 
     NINTH: - This Corporation is to have perpetual existence.

     TENTH: - The Board of Directors, by resolution passed by a majority of the
     whole Board, may designate any of their number to constitute an Executive
     Committee, which Committee, to the extent provided in said resolution, or
     in the By-Laws of the Company, shall have and may exercise all of the
     powers of the Board of Directors in the management of the business and
     affairs of the Corporation, and shall have power to authorize the seal of
     the Corporation to be affixed to all papers which may require it.

     ELEVENTH: - The private property of the stockholders shall not be liable
     for the payment of corporate debts to any extent whatever.

     TWELFTH: - The Corporation may transact business in any part of the world.

     THIRTEENTH: - The Board of Directors of the Corporation is expressly
     authorized to make, alter or repeal the By-Laws of the Corporation by a
     vote of the majority of the entire Board. The stockholders may make, alter
     or repeal any By-Law whether or not adopted by them, provided however, that
     any such additional By-Laws, alterations or repeal may be adopted only by
     the affirmative vote of the holders of two-thirds or more of the
     outstanding shares of capital stock of the Corporation entitled to vote
     generally in the election of directors (considered for this purpose as one
     class).

     FOURTEENTH: - Meetings of the Directors may be held outside of the State of
     Delaware at such places as may be from time to time designated by the
     Board, and the Directors may keep the books of the Company outside of the
     State of Delaware at such places as may be from time to time designated by
     them.

     FIFTEENTH: - (a) In addition to any affirmative vote required by law, and
     except as otherwise expressly provided in sections (b) and (c) of this
     Article FIFTEENTH:

           (A)  any merger or consolidation of the Corporation or any Subsidiary
           (as hereinafter defined) with or into (i) any Interested Stockholder
           (as hereinafter defined) or (ii) any other corporation (whether or
           not itself an Interested Stockholder), which, after such merger or
           consolidation, would be an Affiliate (as hereinafter defined) of an
           Interested Stockholder, or

           (B)  any sale, lease, exchange, mortgage, pledge, transfer or other
           disposition (in one transaction or a series of related transactions)
           to or with any Interested Stockholder or any Affiliate of any
           Interested Stockholder of any assets of the Corporation or any
           Subsidiary having an aggregate fair market value of $1,000,000 or
           more, or

                                      10
<PAGE>
 
           (C)  the issuance or transfer by the Corporation or any Subsidiary
           (in one transaction or a series of related transactions) of any
           securities of the Corporation or any Subsidiary to any Interested
           Stockholder or any Affiliate of any Interested Stockholder in
           exchange for cash, securities or other property (or a combination
           thereof) having an aggregate fair market value of $1,000,000 or more,
           or

           (D)  the adoption of any plan or proposal for the liquidation or
           dissolution of the Corporation, or

           (E)  any reclassification of securities (including any reverse stock
           split), or recapitalization of the Corporation, or any merger or
           consolidation of the Corporation with any of its Subsidiaries or any
           similar transaction (whether or not with or into or otherwise
           involving an Interested Stockholder) which has the effect, directly
           or indirectly, of increasing the proportionate share of the
           outstanding shares of any class of equity or convertible securities
           of the Corporation or any Subsidiary which is directly or indirectly
           owned by any Interested Stockholder, or any Affiliate of any
           Interested Stockholder,

shall require the affirmative vote of the holders of at least  two-thirds of the
outstanding shares of capital stock of the Corporation entitled to vote
generally in the election of directors, considered for the purpose of this
Article FIFTEENTH as one class ("Voting Shares").  Such affirmative vote shall
be required notwithstanding the fact that no vote may be required, or that some
lesser percentage may be specified, by law or in any agreement with any national
securities exchange or otherwise.

              (2)  The term "business combination" as used in this Article
              FIFTEENTH shall mean any transaction which is referred to any one
              or more of clauses (A) through (E) of paragraph 1 of the section
              (a).

           (b)  The provisions of section (a) of this Article FIFTEENTH shall
           not be applicable to any particular business combination and such
           business combination shall require only such affirmative vote as is
           required by law and any other provisions of the Charter or Act of
           Incorporation of By-Laws if such business combination has been
           approved by a majority of the whole Board.

           (c)  For the purposes of this Article FIFTEENTH:

     (1)  A "person" shall mean any individual firm, corporation or other
     entity.

     (2)  "Interested Stockholder" shall mean, in respect of any business
     combination, any person (other than the Corporation or any Subsidiary) who
     or which as of the record date for the determination of stockholders
     entitled to notice of and to vote on

                                      11
<PAGE>
 
     such business combination, or immediately prior to the consummation of any
     such transaction:

           (A)  is the beneficial owner, directly or indirectly, of more than
           10% of the Voting Shares, or

           (B)  is an Affiliate of the Corporation and at any time within two
           years prior thereto was the beneficial owner, directly or indirectly,
           of not less than 10% of the then outstanding voting Shares, or

           (C)  is an assignee of or has otherwise succeeded in any share of
           capital stock of the Corporation which were at any time within two
           years prior thereto beneficially owned by any Interested Stockholder,
           and such assignment or succession shall have occurred in the course
           of a transaction or series of transactions not involving a public
           offering within the meaning of the Securities Act of 1933.

     (3)   A person shall be the "beneficial owner" of any Voting Shares:

           (A)  which such person or any of its Affiliates and Associates (as
           hereafter defined) beneficially own, directly or indirectly, or

           (B)  which such person or any of its Affiliates or Associates has (i)
           the right to acquire (whether such right is exercisable immediately
           or only after the passage of time), pursuant to any agreement,
           arrangement or understanding or upon the exercise of conversion
           rights, exchange rights, warrants or options, or otherwise, or (ii)
           the right to vote pursuant to any agreement, arrangement or
           understanding, or

           (C)  which are beneficially owned, directly or indirectly, by any
           other person with which such first mentioned person or any of its
           Affiliates or Associates has any agreement, arrangement or
           understanding for the purpose of acquiring, holding, voting or
           disposing of any shares of capital stock of the Corporation.

     (4)   The outstanding Voting Shares shall include shares deemed owned
     through application of paragraph (3) above but shall not include any other
     Voting Shares which may be issuable pursuant to any agreement, or upon
     exercise of conversion rights, warrants or options or otherwise.

     (5)  "Affiliate" and "Associate" shall have the respective meanings given
     those terms in Rule 12b-2 of the General Rules and Regulations under the
     Securities Exchange Act of 1934, as in effect on December 31, 1981.

                                      12
<PAGE>
 
      (6)  "Subsidiary" shall mean any corporation of which a majority of any
      class of equity security (as defined in Rule 3a11-1 of the General Rules
      and Regulations under the Securities Exchange Act of 1934, as in effect in
      December 31, 1981) is owned, directly or indirectly, by the Corporation;
      provided, however, that for the purposes of the definition of Investment
      Stockholder set forth in paragraph (2) of this section (c), the term
      "Subsidiary" shall mean only a corporation of which a majority of each
      class of equity security is owned, directly or indirectly, by the
      Corporation.

           (d)  majority of the directors shall have the power and duty to
           determine for the purposes of this Article FIFTEENTH on the basis of
           information known to them, (1) the number of Voting Shares
           beneficially owned by any person (2) whether a person is an Affiliate
           or Associate of another, (3) whether a person has an agreement,
           arrangement or understanding with another as to the matters referred
           to in paragraph (3) of section (c), or (4) whether the assets subject
           to any business combination or the consideration received for the
           issuance or transfer of securities by the Corporation, or any
           Subsidiary has an aggregate fair market value of $1,000,000 or more.

           (e)  Nothing contained in this Article FIFTEENTH shall be construed
           to relieve any Interested Stockholder from any fiduciary obligation
           imposed by law.

      SIXTEENTH:   Notwithstanding any other provision of this Charter or Act of
      Incorporation or the By-Laws of the Corporation (and in addition to any
      other vote that may be required by law, this Charter or Act of
      Incorporation by the By-Laws), the affirmative vote of the holders of at
      least two-thirds of the outstanding shares of the capital stock of the
      Corporation entitled to vote generally in the election of directors
      (considered for this purpose as one class) shall be required to amend,
      alter or repeal any provision of Articles FIFTH, THIRTEENTH, FIFTEENTH or
      SIXTEENTH of this Charter or Act of Incorporation.

      SEVENTEENTH: (a)  a Director of this Corporation shall not be liable to
      the Corporation or its stockholders for monetary damages for breach of
      fiduciary duty as a Director, except to the extent such exemption from
      liability or limitation thereof is not permitted under the Delaware
      General Corporation Laws as the same exists or may hereafter be amended.

           (b)  Any repeal or modification of the foregoing paragraph shall not
           adversely affect any right or protection of a Director of the
           Corporation existing hereunder with respect to any act or omission
           occurring prior to the time of such repeal or modification."

                                      13
<PAGE>
 
                                   EXHIBIT B

                                    BY-LAWS


                            WILMINGTON TRUST COMPANY

                              WILMINGTON, DELAWARE

                        AS EXISTING ON DECEMBER 21, 1995
<PAGE>
 
                      BY-LAWS OF WILMINGTON TRUST COMPANY


                                   ARTICLE I
                             STOCKHOLDERS' MEETINGS

      Section 1.  The Annual Meeting of Stockholders shall be held on the third
Thursday in April each year at the principal office at the Company or at such
other date, time, or place as may be designated by resolution by the Board of
Directors.

      Section 2.  Special meetings of all stockholders may be called at any time
by the Board of Directors, the Chairman of the Board or the President.

      Section 3.  Notice of all meetings of the stockholders shall be given by
mailing to each stockholder at least ten (10 days before said meeting, at his
last known address, a written or printed notice fixing the time and place of
such meeting.

      Section 4.  A majority in the amount of the capital stock of the Company
issued and outstanding on the record date, as herein determined, shall
constitute a quorum at all meetings of stockholders for the transaction of any
business, but the holders of a small number of shares may adjourn, from time to
time, without further notice, until a quorum is secured.  At each annual or
special meeting of stockholders, each stockholder shall be entitled to one vote,
either in person or by proxy, for each shares of stock registered in the
stockholder's name on the books of the Company on the record date for any such
meeting as determined herein.


                                  ARTICLE II
                                   DIRECTORS

      Section 1.  The number and classification of the Board of Directors shall
be as set forth in the Charter of the Bank.

      Section 2.  No person who has attained the age of seventy-two (72) years
shall be nominated for election to the Board of Directors of the Company,
provided, however, that this limitation shall not apply to any person who was
serving as director of the Company on September 16, 1971.

      Section 3.  The class of Directors so elected shall hold office for three
years or until their successors are elected and qualified.

      Section 4.  The affairs and business of the Company shall be managed and
conducted by the Board of Directors.

      Section 5.  Regular meetings of the Board of Directors shall be held on
the third Thursday of each month at the principal office of the Company, or at
such other place and
<PAGE>
 
time as may be designated by the Board of Directors, the Chairman of the Board,
or the President.

      Section 6.  Special meetings of the Board of Directors may be called at
any time by the Chairman of the Board of Directors or by the President, and
shall be called upon the written request of a majority of the directors.

      Section 7.  A majority of the directors elected and qualified shall be
necessary to constitute a quorum for the transaction of business at any meeting
of the Board of Directors.

      Section 8.  Written notice shall be sent by mail to each director of any
special meeting of the Board of Directors, and of any change in the time or
place of any regular meeting, stating the time and place of such meeting, which
shall be mailed not less than two days before the time of holding such meeting.

      Section 9.  In the event of the death, resignation, removal, inability to
act, or disqualification of any director, the Board of Directors, although less
than a quorum, shall have the right to elect the successor who shall hold office
for the remainder of the full term of the class of directors in which the
vacancy occurred, and until such director's successor shall have been duly
elected and qualified.

      Section 10.  The Board of Directors at its first meeting after its
election by the stockholders shall appoint an Executive Committee, a Trust
Committee, an Audit Committee and a Compensation Committee, and shall elect from
its own members a Chairman of the Board of Directors and a President who may be
the same person.  The Board of Directors shall also elect at such meeting a
Secretary and a Treasurer, who may be the same person, may appoint at any time
such other committees and elect or appoint such other officers as it may deem
advisable.  The Board of Directors may also elect at such meeting one or more
Associate Directors.

      Section 11.  The Board of Directors may at any time remove, with or
without cause, any member of any Committee appointed by it or any associate
director or officer elected by it and may appoint or elect his successor.

      Section 12.  The Board of Directors may designate an officer to be in
charge of such of the departments or division of the Company as it may deem
advisable.


                                  ARTICLE III
                                  COMMITTEES

      Section I.  Executive Committee

          (A)  The Executive Committee shall be composed of not more than nine

                                       2
<PAGE>
 
members who shall be selected by the Board of Directors from its own members and
who shall hold office during the pleasure of the Board.

          (B)  The Executive Committee shall have all the powers of the Board of
Directors when it is not in session to transact all business for and in behalf
of the Company that may be brought before it.

          (C)  The Executive Committee shall meet at the principal office of the
Company or elsewhere in its discretion at such times to be determined by a
majority of its members, or at the call of the Chairman of the Executive
Committee or at the call of the Chairman of the Board of Directors.  The
majority of its members shall be necessary to constitute a quorum for the
transaction of business.  Special meetings of the Executive Committee may be
held at any time when a quorum is present.

          (D)  Minutes of each meeting of the Executive Committee shall be kept
and submitted to the Board of Directors at its next meeting.

          (E)  The Executive Committee shall advise and superintend all
investments that may be made of the funds of the Company, and shall direct the
disposal of the same, in accordance with such rules and regulations as the Board
of Directors from time to time make.

          (F)  In the event of a state of disaster of sufficient severity to
prevent the conduct and management of the affairs and business of the Company by
its directors and officers as contemplated by these By-Laws any two available
members of the Executive Committee as constituted immediately prior to such
disaster shall constitute a quorum of that Committee for the full conduct and
management of the affairs and business of the Company in accordance with the
provisions of Article III of these By-Laws; and if less than three members of
the Trust Committee is constituted immediately prior to such disaster shall be
available for the transaction of its business, such Executive Committee shall
also be empowered to exercise all of the powers reserved to the Trust Committee
under Article III Section 2 hereof.  In the event of the unavailability, at such
time, of a minimum of two members of such Executive Committee, any three
available directors shall constitute the Executive Committee for the full
conduct and management of the affairs and business of the Company in accordance
with the foregoing provisions of this Section.  This By-Law shall be subject to
implementation by Resolutions of the Board of Directors presently existing or
hereafter passed from time to time for that purpose, and any provisions of these
By-Laws (other than this Section) and any resolutions which are contrary to the
provisions of this Section or to the provisions of any such implementary
Resolutions shall be suspended during such a disaster period until it shall be
determined by any interim Executive Committee acting under this section that it
shall be to the advantage of the Company to resume the conduct and management of
its affairs and business under all of the other provisions of these By-Laws.

                                       3
<PAGE>
 
      Section 2.  Trust Committee
 
          (A)  The Trust Committee shall be composed of not more than thirteen
members who shall be selected by the Board of Directors, a majority of whom
shall be members of the Board of Directors and who shall hold office during the
pleasure of the Board.

          (B)  The Trust Committee shall have general supervision over the Trust
Department and the investment of trust funds, in all matters, however, being
subject to the approval of the Board of Directors.

          (C)  The Trust Committee shall meet at the principal office of the
Company or elsewhere in its discretion at least once a month.  A majority of its
members shall be necessary to constitute a quorum for the transaction of
business.  Special meetings of the Trust Committee may be held at any time when
a quorum is present.

          (D)  Minutes of each meeting of the Trust Committee shall be kept and
promptly submitted to the Board of Directors.

          (E)  The Trust Committee shall have the power to appoint Committees
and/or designate officers or employees of the Company to whom supervision over
the investment of trust funds may be delegated when the Trust Committee is not
in session.

      Section 3.  Audit Committee

          (A)  The Audit Committee shall be composed of five members who shall
be selected by the Board of Directors from its own members, none of whom shall
be an officer of the Company, and shall hold office at the pleasure of the
Board.

          (B)  The Audit Committee shall have general supervision over the Audit
Division in all matters however subject to the approval of the Board of
Directors; it shall consider all matters brought to its attention by the officer
in charge of the Audit Division, review all reports of examination of the
Company made by any governmental agency or such independent auditor employed for
that purpose, and make such recommendations to the Board of Directors with
respect thereto or with respect to any other matters pertaining to auditing the
Company as it shall deem desirable.

          (C)  The Audit Committee shall meet whenever and wherever the majority
of its members shall deem it to be proper for the transaction of its business,
and a majority of its Committee shall constitute a quorum.

      Section 4.  Compensation Committee

          (A)  The Compensation Committee shall be composed of not more than

                                       4
<PAGE>
 
five (5) members who shall be selected by the Board of Directors from its own
members who are not officers of the Company and who shall hold office during the
pleasure of the Board.

          (B)  The Compensation Committee shall in general advise upon all
matters of policy concerning the Company brought to its attention by the
management and from time to time review the management of the Company, major
organizational matters, including salaries and employee benefits and
specifically shall administer the Executive Incentive Compensation Plan.

          (C)  Meetings of the Compensation Committee may be called at any time
by the Chairman of the Compensation Committee, the Chairman of the Board of
Directors, or the President of the Company.

      Section 5.  Associate Directors

          (A)  Any person who has served as a director may be elected by the
Board of Directors as an associate director, to serve during the pleasure of the
Board.

          (B)  An associate director shall be entitled to attend all directors
meetings and participate in the discussion of all matters brought to the Board,
with the exception that he would have no right to vote.  An associate director
will be eligible for appointment to Committees of the Company, with the
exception of the Executive Committee, Audit Committee and Compensation
Committee, which must be comprised solely of active directors.

      Section 6.  Absence or Disqualification of Any Member of a Committee

          (A)  In the absence or disqualification of any member of any Committee
created under Article III of the By-Laws of this Company, the member or members
thereof present at any meeting and not disqualified from voting, whether or not
he or they constitute a quorum, may unanimously appoint another member of the
Board of Directors to act at the meeting in the place of any such absence or
disqualified member.


                                   ARTICLE IV
                                    OFFICERS

      Section 1.  The Chairman of the Board of Directors shall preside at all
meetings of the Board and shall have such further authority and powers and shall
perform such duties as the Board of Directors may from time to time confer and
direct.  He shall also exercise such powers and perform such duties as may from
time to time be agreed upon between himself and the President of the Company.

      Section 2.  The Vice Chairman of the Board of Directors shall preside at
all

                                       5
<PAGE>
 
meetings of the Board of Directors at which the Chairman of the Board shall not
be present and shall have such further authority and powers and shall perform
such duties as the Board of Directors or the Chairman of the Board may from time
to time confer and direct.

      Section 3.  The President shall have the powers and duties pertaining to
the office of the President conferred or imposed upon him by statute or assigned
to him by the Board of Directors in the absence of the Chairman of the Board the
President shall have the powers and duties of the Chairman of the Board.

      Section 4.  The Chairman of the Board of Directors or the President as
designated by the Board of Directors, shall carry into effect all legal
directions of the Executive Committee and of the Board of Directors, and shall
at all times exercise general supervision over the interest, affairs and
operations of the Company and perform all duties incident to his office.

      Section 5.  There may be one or more Vice Presidents, however denominated
by the Board of Directors, who may at any time perform all the duties of the
Chairman of the Board of Directors and/or the President and such other powers
and duties as may from time to time be assigned to them by the Board of
Directors, the Executive Committee, the Chairman of the Board or the President
and by the officer in charge of the department or division to which they are
assigned.

      Section 6.  The Secretary shall attend to the giving of notice of meetings
of the stockholders and the Board of Directors, as well as the Committees
thereof, to the keeping of accurate minutes of all such meetings and to
recording the same in the minute books of the Company.  In addition to the other
notice requirements of these By-Laws and as may be practicable under the
circumstances, all such notices shall be in writing and mailed well in advance
of the scheduled date of any other meeting.  He shall have custody of the
corporate seal and shall affix the same to any documents requiring such
corporate seal and to attest the same.

      Section 7.  The Treasurer shall have general supervision over all assets
and liabilities of the Company.  He shall be custodian of and responsible for
all monies, funds and valuables of the Company and for the keeping of proper
records of the evidence of property or indebtedness and of all the transactions
of the Company.  He shall have general supervision of the expenditures of the
Company and shall report to the Board of Directors at each regular meeting of
the condition of the Company, and perform such other duties as may be assigned
to him from time to time by the Board of Directors of the Executive Committee.

      Section 8.  There may be a Controller who shall exercise general
supervision over the internal operations of the Company, including accounting,
and shall render to the Board of Directors at appropriate times a report
relating to the general condition and internal operations of the Company.

                                       6
<PAGE>
 
      There may be one or more subordinate accounting or controller officers
however denominated, who may perform the duties of the Controller and such
duties as may be prescribed by the Controller.

      Section 9.  The officer designated by the Board of Directors to be in
charge of the Audit Division of the Company with such title as the Board of
Directors shall prescribe, shall report to and be directly responsible only to
the Board of Directors.

      There shall be an Auditor and there may be one or more Audit Officers,
however denominated, who may perform all the duties of the Auditor and such
duties as may be prescribed by the officer in charge of the Audit Division.

      Section 10.  There may be one or more officers, subordinate in rank to all
Vice Presidents with such functional titles as shall be determined from time to
time by the Board of Directors, who shall ex officio hold the office Assistant
Secretary of this Company and who may perform such duties as may be prescribed
by the officer in charge of the department or division to whom they are
assigned.

      Section 11.  The powers and duties of all other officers of the Company
shall be those usually pertaining to their respective offices, subject to the
direction of the Board of Directors, the Executive Committee, Chairman of the
Board of Directors or the President and the officer in charge of the department
or division to which they are assigned.


                                   ARTICLE V
                         STOCK AND STOCK CERTIFICATES

      Section 1.  Shares of stock shall be transferrable on the books of the
Company and a transfer book shall be kept in which all transfers of stock shall
be recorded.

      Section 2.  Certificate of stock shall bear the signature of the President
or any Vice President, however denominated by the Board of Directors and
countersigned by the Secretary or Treasurer or an Assistant Secretary, and the
seal of the corporation shall be engraved thereon.  Each certificate shall
recite that the stock represented thereby is transferrable only upon the books
of the Company by the holder thereof or his attorney, upon surrender of the
certificate properly endorsed.  Any certificate of stock surrendered to the
Company shall be cancelled at the time of transfer, and before a new certificate
or certificates shall be issued in lieu thereof.  Duplicate certificates of
stock shall be issued only upon giving such security as may be satisfactory to
the Board of Directors or the Executive Committee.

      Section 3.  The Board of Directors of the Company is authorized to fix in
advance a record date for the determination of the stockholders entitled to
notice of, and to vote at, any meeting of stockholders and any adjournment
thereof, or entitled to receive payment of

                                       7
<PAGE>
 
any dividend, or to any allotment or rights, or to exercise any rights in
respect of any change, conversion or exchange of capital stock, or in connection
with obtaining the consent of stockholders for any purpose, which record date
shall not be more than 60 nor less than 10 days proceeding the date of any
meeting of stockholders or the date for the payment of any dividend, or the date
for the allotment of rights, or the date when any change or conversion or
exchange of capital stock shall go into effect, or a date in connection with
obtaining such consent.


                                  ARTICLE VI
                                     SEAL

      Section 1.  The corporate seal of the Company shall be in the following
form:

              Between two concentric circles the words
              "Wilmington Trust Company" within the inner
              circle the words "Wilmington, Delaware."


                                  ARTICLE VII
                                  FISCAL YEAR

      Section 1.  The fiscal year of the Company shall be the calendar year.


                                  ARTICLE VIII
                    EXECUTION OF INSTRUMENTS OF THE COMPANY

      Section 1.  The Chairman of the Board, the President or any Vice
President, however denominated by the Board of Directors, shall have full power
and authority to enter into, make, sign, execute, acknowledge and/or deliver and
the Secretary or any Assistant Secretary shall have full power and authority to
attest and affix the corporate seal of the Company to any and all deeds,
conveyances, assignments, releases, contracts, agreements, bonds, notes,
mortgages and all other instruments incident to the business of this Company or
in acting as executor, administrator, guardian, trustee, agent or in any other
fiduciary or representative capacity by any and every method of appointment or
by whatever person, corporation, court officer or authority in the State of
Delaware, or elsewhere, without any specific authority, ratification, approval
or confirmation by the Board of Directors or the Executive Committee, and any
and all such instruments shall have the same force and validity as although
expressly authorized by the Board of Directors and/or the Executive Committee.
                                      
                                       8
<PAGE>
 
                                   ARTICLE IX
              COMPENSATION OF DIRECTORS AND MEMBERS OF COMMITTEES

      Section 1.  Directors and associate directors of the Company, other than
salaried officers of the Company, shall be paid such reasonable honoraria or
fees for attending meetings of the Board of Directors as the Board of Directors
may from time to time determine.  Directors and associate directors who serve as
members of committees, other than salaried employees of the Company, shall be
paid such reasonable honoraria or fees for services as members of committees as
the Board of Directors shall from time to time determine and directors and
associate directors may be employed by the Company for such special services as
the Board of Directors may from time to time determine and shall be paid for
such special services so performed reasonable compensation as may be determined
by the Board of Directors.


                                   ARTICLE X
                                INDEMNIFICATION

      Section 1.  (A)  The Corporation shall indemnify and hold harmless, to the
fullest extent permitted by applicable law as it presently exists or may
hereafter be amended, any person who was or is made or is threatened to be made
a party or is otherwise involved in any action, suit or proceeding, whether
civil, criminal, administrative or investigative (a "proceeding") by reason of
the fact that he, or a person for whom he is the legal representative, is or was
a director, officer, employee or agent of the Corporation or is or was serving
at the request of the Corporation as a director, officer, employee, fiduciary or
agent of another corporation or of a partnership, joint venture, trust,
enterprise or non-profit entity, including service with respect to employee
benefit plans, against all liability and loss suffered and expenses reasonably
incurred by such person.  The Corporation shall indemnify a person in connection
with a proceeding initiated by such person only if the proceeding was authorized
by the Board of Directors of the Corporation.

          (B)  The Corporation shall pay the expenses incurred in defending any
proceeding in advance of its final disposition, provided, however, that the
                                                --------  -------          
payment of expenses incurred by a Director officer in his capacity as a Director
or officer in advance of the final disposition of the proceeding shall be made
only upon receipt of an undertaking by the Director or officer to repay all
amounts advanced if it should be ultimately determined that the Director or
officer is not entitled to be indemnified under this Article or otherwise.

          (C)  If a claim for indemnification or payment of expenses, under this
Article X is not paid in full within ninety days after a written claim therefor
has been received by the Corporation the claimant may file suit to recover the
unpaid amount of such claim and, if successful in whole or in part, shall be
entitled to be paid the expense of prosecuting such claim.  In any such action
the Corporation shall have the burden of proving

                                       9
<PAGE>
 
that the claimant was not entitled to the requested indemnification of payment
of expenses under applicable law.

          (D)  The rights conferred on any person by this Article X shall not be
exclusive of any other rights which such person may have or hereafter acquire
under any statute, provision of the Charter or Act of Incorporation, these By-
Laws, agreement, vote of stockholders or disinterested Directors or otherwise.

          (E)  Any repeal or modification of the foregoing provisions of this
Article X shall not adversely affect any right or protection hereunder of any
person in respect of any act or omission occurring prior to the time of such
repeal or modification.


                                   ARTICLE XI
                           AMENDMENTS TO THE BY-LAWS

      Section 1.  These By-Laws may be altered, amended or repealed, in whole or
in part, and any new By-Law or By-Laws adopted at any regular or special meeting
of the Board of Directors by a vote of the majority of all the members of the
Board of Directors then in office.

                                      10
<PAGE>
 
                                                                  EXHIBIT C



                             SECTION 321(B) CONSENT


      Pursuant to Section 321(b) of the Trust Indenture Act of 1939, as amended,
Wilmington Trust Company hereby consents that reports of examinations by
Federal, State, Territorial or District authorities may be furnished by such
authorities to the Securities and Exchange Commission upon requests therefor.



                                    WILMINGTON TRUST COMPANY


Dated: December 9, 1996             By: /s/ Emmett R. Harmon
                                        ------------------------
                                    Name: Emmett R. Harmon
                                    Title: Vice President
<PAGE>
 
                                   EXHIBIT D



                                     NOTICE


          This form is intended to assist state nonmember banks and savings
          banks with state publication requirements.  It has not been approved
          by any state banking authorities.  Refer to your appropriate state
          banking authorities for your state publication requirements.

 
R E P O R T  O F  C O N D I T I O N
 
Consolidating domestic subsidiaries of the
 
           WILMINGTON TRUST COMPANY          of   WILMINGTON
- --------------------------------------------     -------------
               Name of Bank        City
 
in the State of DELAWARE  , at the close of business on September 30, 1996.
               ----------

<TABLE> 
<CAPTION> 
ASSETS
<S>                                                                        <C>   
                                                                           Thousands of dollars
Cash and balances due from depository institutions:
      Noninterest-bearing balances and currency and coins.................              198,288
      Interest-bearing balances...........................................                    0
Held-to-maturity securities...............................................              489,428
Available-for-sale securities.............................................              783,718
Federal funds sold........................................................               19,000
Securities purchased under agreements to resell...........................               48,500
Loans and lease financing receivables:                                    
      Loans and leases, net of unearned income............................            3,620,289
      LESS:  Allowance for loan and lease losses..........................               49,721
      LESS:  Allocated transfer risk reserve..............................                    0
      Loans and leases, net of unearned income, allowance, and reserve....            3,570,568
Assets held in trading accounts...........................................                    0
Premises and fixed assets (including capitalized leases)..................               83,675
Other real estate owned...................................................                4,607
Investments in unconsolidated subsidiaries and associated companies.......                   85
Customers' liability to this bank on acceptances outstanding..............                    0
Intangible assets.........................................................                4,131
Other assets..............................................................              101,592
Total assets..............................................................            5,303,592
</TABLE>

                                                          CONTINUED ON NEXT PAGE
<PAGE>
 
<TABLE> 
<CAPTION> 
LIABILITIES
<S>                                                                       <C>
Deposits:
In domestic offices.....................................................  3,457,641
      Noninterest-bearing...............................................    740,731
      Interest-bearing..................................................  2,716,910
Federal funds purchased.................................................    135,889
Securities sold under agreements to repurchase..........................    213,617
Demand notes issued to the U.S. Treasury................................     94,999
Trading liabilities.....................................................          0
Other borrowed money:...................................................    ///////
      With original maturity of one year or less........................    844,000
      With original maturity of more than one year......................     28,000
Mortgage indebtedness and obligations under capitalized leases..........          0
Bank's liability on acceptances executed and outstanding................          0
Subordinated notes and debentures.......................................          0
Other liabilities.......................................................    103,818
Total liabilities.......................................................  4,877,964
Limited-life preferred stock and related surplus........................          0
 
 
 
EQUITY CAPITAL
 
Perpetual preferred stock and related surplus...........................          0
Common Stock............................................................        500
Surplus.................................................................     62,119
Undivided profits and capital reserves..................................    363,705
Net unrealized holding gains (losses) on available-for-sale securities..       (696)
Total equity capital....................................................    425,628
Total liabilities, limited-life preferred stock, and equity capital.....  5,303,592
</TABLE>

                                       2

<PAGE>
 
                                                                    EXHIBIT 99.1

                             LETTER OF TRANSMITTAL
                                 FBS CAPITAL I
                             OFFER TO EXCHANGE ITS
                           8.09% CAPITAL SECURITIES
          WHICH HAVE BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933
                      FOR ANY AND ALL OF ITS OUTSTANDING
                           8.09% CAPITAL SECURITIES
               (LIQUIDATION AMOUNT $1,000 PER CAPITAL SECURITY)
                          PURSUANT TO THE PROSPECTUS
                       DATED                     , 1996


THE  EXCHANGE OFFER  AND WITHDRAWAL RIGHTS  WILL EXPIRE AT  5:00 P.M., NEW
YORK CITY TIME, ON             , 199__, UNLESS THE OFFER IS EXTENDED.

                 THE EXCHANGE AGENT FOR THE EXCHANGE OFFER IS:
                           WILMINGTON TRUST COMPANY


                       BY MAIL/OVERNIGHT DELIVERY/HAND:

                           Wilmington Trust Company
                           Corporate Trust Operation
                              Rodney Square North
                           1100 North Market Street
                       Wilmington, Delaware  19890-0001
                               Attn:  Jill Rylee

                  TO CONFIRM BY TELEPHONE OR FOR INFORMATION:

                                (302) 651-8867

                           FACSIMILE TRANSMISSIONS:

                                (302) 651-1079

     DELIVERY OF THIS LETTER OF TRANSMITTAL TO AN ADDRESS OTHER THAN AS SET
FORTH ABOVE OR TRANSMISSION OF THIS LETTER OF TRANSMITTAL VIA FACSIMILE TO A
NUMBER OTHER THAN AS SET FORTH ABOVE DOES NOT CONSTITUTE A VALID DELIVERY.

     THE INSTRUCTIONS CONTAINED HEREIN SHOULD BE READ CAREFULLY BEFORE THIS
LETTER OF TRANSMITTAL IS COMPLETED.

     Capitalized terms used but not defined herein shall have the same meaning
given them in the Prospectus (as defined below).

     This Letter of Transmittal is to be completed by holders of Old Capital
Securities (as defined below) either if Old Capital Securities are to be
forwarded herewith or if tenders of Old Capital Securities are to be made by
book-entry transfer to an account maintained by Wilmington Trust Company (the
"Exchange Agent") at The Depository Trust Company ("DTC") pursuant to the
procedures set forth in "The Exchange Offer--Procedures for Tendering Old
Capital Securities" in the Prospectus.

     Holders of Old Capital Securities whose certificates (the "Certificates")
for such Old Capital Securities are not immediately available or who cannot
deliver their Certificates and all other required documents to the Exchange
Agent on or prior to the Expiration Date (as defined in the Prospectus) or who
cannot complete the procedures for book-entry transfer on a timely basis, must
tender 
<PAGE>

their Old Capital Securities according to the guaranteed delivery
procedures set forth in "The Exchange Offer--Procedures for Tendering Old
Capital Securities" in the Prospectus.

     DELIVERY OF DOCUMENTS TO DTC DOES NOT CONSTITUTE DELIVERY TO THE EXCHANGE
AGENT.

                    NOTE: SIGNATURES MUST BE PROVIDED BELOW
             PLEASE READ THE ACCOMPANYING INSTRUCTIONS CAREFULLY



                    ALL TENDERING HOLDERS COMPLETE THIS BOX
<TABLE>
<CAPTION>
- -------------------------------------------------------------------------------------------------
                DESCRIPTION OF OLD CAPITAL SECURITIES TENDERED
- -------------------------------------------------------------------------------------------------
                                                                PRINCIPAL AMOUNT
                                                                 OF OLD CAPITAL
                                                                   SECURITIES          NUMBER OF
                                                                  TENDERED (IF        BENEFICIAL
   PLEASE PRINT NAME AND                     OLD CAPITAL            PRINCIPAL        HOLDERS FOR
   ADDRESS OF REGISTERED                     SECURITIES              AMOUNT            WHOM OLD
         HOLDER                               TENDERED           OF OLD CAPITAL         CAPITAL
       (PLEASE FILL        CERTIFICATE  (ATTACH ADDITIONAL LIST    SECURITIES         SECURITIES
        IF BLANK)            NUMBER(S)*      IF NECESSARY)      LESS THAN ALL)**       ARE HELD
- -------------------------------------------------------------------------------------------------
<S>                         <C>          <C>                     <C>               <C> 



- -------------------------------------------------------------------------------------------------
TOTAL AMOUNT TENDERED:
- -------------------------------------------------------------------------------------------------
____________
*   Need not be completed by book-entry holders.

**  Old Capital Securities may be tendered in whole or in part in denominations
    of $100,000 and integral multiples of $1,000 in excess thereof, provided
    that if any Old Capital Securities are tendered for exchange in part, the
    untendered principal amount thereof must be $100,000 or any integral
    multiple of $1,000 in excess thereof. All Old Capital Securities held shall
    be deemed tendered unless a lesser number is specified in this column.
- -------------------------------------------------------------------------------------------------
</TABLE>

           (BOXES BELOW TO BE CHECKED BY ELIGIBLE INSTITUTIONS ONLY)

  [_]  CHECK HERE IF TENDERED OLD CAPITAL SECURITIES ARE BEING DELIVERED BY
       BOOK-ENTRY TRANSFER MADE TO THE ACCOUNT MAINTAINED BY THE EXCHANGE AGENT
       WITH DTC AND COMPLETE THE FOLLOWING:

       Name of Tendering Institution
                                    -------------------------------------------
       DTC Account Number
                         ------------------------------------------------------
       Transaction Code Number
                              -------------------------------------------------

  [_]  CHECK HERE AND ENCLOSE A PHOTOCOPY OF THE NOTICE OF GUARANTEED DELIVERY
       IF TENDERED OLD CAPITAL SECURITIES ARE BEING DELIVERED PURSUANT TO A
       NOTICE OF GUARANTEED DELIVERY PREVIOUSLY SENT TO THE EXCHANGE AGENT AND
       COMPLETE THE FOLLOWING:

                                      -2-
<PAGE>
 
       Name of Registered Holders(s)
                                    -------------------------------------------
       Window Ticket Number (if any)
                                    -------------------------------------------
       Date of Execution of Notice of Guaranteed Delivery
                                                         ----------------------
       Name of Institution which Guaranteed Delivery
                                                    ---------------------------

         If Guaranteed Delivery is to be made By Book-Entry Transfer:

       Name of Tendering Institution
                                    -------------------------------------------
       DTC Account Number
                         ------------------------------------------------------
       Transaction Code Number
                              -------------------------------------------------


  [_]  CHECK HERE IF TENDERED BY BOOK-ENTRY TRANSFER AND NON-EXCHANGED OLD
       CAPITAL SECURITIES ARE TO BE RETURNED BY CREDITING THE DTC ACCOUNT NUMBER
       SET FORTH ABOVE.

  [_]  CHECK HERE IF YOU ARE A BROKER-DEALER WHO ACQUIRED THE OLD CAPITAL
       SECURITIES FOR ITS OWN ACCOUNT AS A RESULT OF MARKET MAKING OR OTHER
       TRADING ACTIVITIES (A "PARTICIPATING BROKER-DEALER") AND WISH TO RECEIVE
       10 ADDITIONAL COPIES OF THE PROSPECTUS AND 10 COPIES OF ANY AMENDMENTS OR
       SUPPLEMENTS THERETO.

  Name:
       ------------------------------------------------------------------------
  Address:
          ---------------------------------------------------------------------

                                      -3-
<PAGE>
 
Ladies and Gentlemen:

     The undersigned hereby tenders to FBS Capital I, a Delaware business trust
(the "Trust") and First Bank System, Inc., a Delaware Corporation, as Depositor
("FBS"), the above described aggregate Liquidation Amount of the Trust's 8.09%
Capital Securities due November 15, 2026 (the "Old Capital Securities") in
exchange for a like aggregate Liquidation Amount of the Trust's 8.09% Capital
Securities due November 15, 2026 (the "New Capital Securities") which have been
registered under the Securities Act of 1933 (the "Securities Act"), upon the
terms and subject to the conditions set forth in the Prospectus
dated_______________, 1996 (as the same may be amended or supplemented from time
to time, the "Prospectus"), receipt of which is acknowledged, and in this Letter
of Transmittal (which, together with the Prospectus, constitute the "Exchange
Offer").

     Subject to and effective upon the acceptance for exchange of all or any
portion of the Old Capital Securities tendered herewith in accordance with the
terms and conditions of the Exchange Offer (including, if the Exchange Offer is
extended or amended, the terms and conditions of any such extension or
amendment), the undersigned hereby sells, assigns and transfers to or upon the
order of the Trust all right, title and interest in and to such Old Capital
Securities as are being tendered herewith. The undersigned hereby irrevocably
constitutes and appoints the Exchange Agent as its agent and attorney-in-fact
(with full knowledge that the Exchange Agent is also acting as agent of FBS and
the Trust in connection with the Exchange Offer) with respect to the tendered
Old Capital Securities, with full power of substitution (such power of attorney
being deemed to be an irrevocable power coupled with an interest), subject only
to the right of withdrawal described in the Prospectus, to (i) deliver
Certificates for Old Capital Securities to FBS or the Trust together with all
accompanying evidences of transfer and authenticity to, or upon the order of,
the Trust, upon receipt by the Exchange Agent, as the undersigned's agent, of
the New Capital Securities to be issued in exchange for such Old Capital
Securities, (ii) present Certificates for such Old Capital Securities for
transfer, and to transfer the Old Capital Securities on the books of the Trust,
and (iii) receive for the account of the Trust all benefits and otherwise
exercise all rights of beneficial ownership of such Old Capital Securities, all
in accordance with the terms and conditions of the Exchange Offer.

     THE UNDERSIGNED HEREBY REPRESENT AND WARRANT THAT THE UNDERSIGNED HAS FULL
POWER AND AUTHORITY TO TENDER, EXCHANGE, SELL, ASSIGN AND TRANSFER THE OLD
CAPITAL SECURITIES TENDERED HEREBY AND THAT, WHEN THE SAME ARE ACCEPTED FOR
EXCHANGE, THE TRUST WILL ACQUIRE GOOD, MARKETABLE AND UNENCUMBERED TITLE
THERETO, FREE AND CLEAR OF ALL LIENS, RESTRICTIONS, CHARGES AND ENCUMBRANCES,
AND THAT THE OLD CAPITAL SECURITIES TENDERED HEREBY ARE NOT SUBJECT TO ANY
ADVERSE CLAIMS OR PROXIES.  THE UNDERSIGNED WILL, UPON REQUEST, EXECUTE AND
DELIVER ANY ADDITIONAL DOCUMENTS DEEMED BY FBS, THE TRUST OR THE EXCHANGE AGENT
TO BE NECESSARY OR DESIRABLE TO COMPLETE THE EXCHANGE, ASSIGNMENT AND TRANSFER
OF THE OLD CAPITAL SECURITIES TENDERED HEREBY, AND THE UNDERSIGNED WILL COMPLY
WITH ITS OBLIGATIONS UNDER THE CAPITAL SECURITIES REGISTRATION RIGHTS AGREEMENT.
THE UNDERSIGNED HAS READ AND AGREES TO ALL OF THE TERMS OF THE EXCHANGE OFFER.

     The name(s) and address(es) of the registered holder(s) of the Old Capital
Securities tendered hereby should be printed above, if they are not already set
forth above, as they appear on the Certificates representing such Old Capital
Securities. The Certificate number(s) and the Old Capital Securities that the
undersigned wishes to tender should be indicated in the appropriate boxes above.

     If any tendered Old Capital Securities are not exchanged pursuant to the
Exchange Offer for any reason, or if Certificates are submitted for more Old
Capital Securities than are tendered or accepted for exchange, Certificates for
such nonexchanged or nontendered Old Capital Securities will be returned (or, in
the case of Old Capital Securities tendered by book-entry transfer, such Old
Capital Securities will be credited to an account maintained at DTC), without
expense to the tendering holder, promptly following the expiration or
termination of the Exchange Offer.
 
                                      -4-
<PAGE>
 
     The undersigned understands that tenders of Old Capital Securities pursuant
to any one of the procedures described in "The Exchange Offer--Procedures for
Tendering Old Capital Securities" in the Prospectus and in the instruction, FBS
hereto will, upon FBS's and the Trust's acceptance for exchange of such tendered
Old Capital Securities, constitute a binding agreement between the undersigned,
FBS and the Trust upon the terms and subject to the conditions of the Exchange
Offer. The undersigned recognizes that, under certain circumstances set forth in
the Prospectus, FBS and the Trust may not be required to accept for exchange any
of the Old Capital Securities tendered hereby.

     Unless otherwise indicated herein in the box entitled "Special Issuance
Instructions" below, the undersigned hereby directs that the New Capital
Securities be issued in the name(s) of the undersigned or, in the case of a
book-entry transfer of Old Capital Securities, that such New Capital Securities
be credited to the account indicated above maintained at DTC.  If applicable,
substitute Certificates representing Old Capital Securities not exchanged or not
accepted for exchange will be issued to the undersigned or, in the case of a
book-entry transfer of Old Capital Securities, will be credited to the account
indicated above maintained at DTC.  Similarly, unless otherwise indicated under
"Special Delivery Instructions," please deliver New Capital Securities to the
undersigned at the address shown below the undersigned's signature.

     BY TENDERING OLD CAPITAL SECURITIES AND EXECUTING THIS LETTER OF
TRANSMITTAL, THE UNDERSIGNED HEREBY REPRESENTS AND AGREES THAT (I) THE
UNDERSIGNED IS NOT AN "AFFILIATE" OF FBS OR THE TRUST, (II) ANY NEW CAPITAL
SECURITIES TO BE RECEIVED BY THE UNDERSIGNED ARE BEING ACQUIRED IN THE ORDINARY
COURSE OF ITS BUSINESS, (III) THE UNDERSIGNED HAS NO ARRANGEMENT OR
UNDERSTANDING WITH ANY PERSON TO PARTICIPATE IN A DISTRIBUTION (WITHIN THE
MEANING OF THE SECURITIES ACT) OF NEW CAPITAL SECURITIES TO BE RECEIVED IN THE
EXCHANGE OFFER, AND (IV) IF THE UNDERSIGNED IS NOT A BROKER-DEALER, THE
UNDERSIGNED IS NOT ENGAGED IN, AND DOES NOT INTEND TO ENGAGE IN, A DISTRIBUTION
(WITHIN THE MEANING OF THE SECURITIES ACT) OF SUCH NEW CAPITAL SECURITIES. BY
TENDERING OLD CAPITAL SECURITIES PURSUANT TO THE EXCHANGE OFFER AND EXECUTING
THIS LETTER OF TRANSMITTAL, A HOLDER OF OLD CAPITAL SECURITIES WHICH IS A 
BROKER-DEALER REPRESENTS AND AGREES, CONSISTENT WITH CERTAIN INTERPRETIVE
LETTERS ISSUED BY THE STAFF OF THE DIVISION OF CORPORATION FINANCE OF THE
SECURITIES AND EXCHANGE COMMISSION TO THIRD PARTIES, THAT (A) SUCH OLD CAPITAL
SECURITIES HELD BY THE BROKER-DEALER ARE HELD ONLY AS A NOMINEE, OR (B) SUCH OLD
CAPITAL SECURITIES WERE ACQUIRED BY SUCH BROKER-DEALER FOR ITS OWN ACCOUNT AS A
RESULT OF MARKET-MAKING ACTIVITIES OR OTHER TRADING ACTIVITIES AND IT WILL
DELIVER THE PROSPECTUS (AS AMENDED OR SUPPLEMENTED FROM TIME TO TIME) MEETING
THE REQUIREMENTS OF THE SECURITIES ACT IN CONNECTION WITH ANY RESALE OF SUCH NEW
CAPITAL SECURITIES (PROVIDED THAT, BY SO ACKNOWLEDGING AND BY DELIVERING A
PROSPECTUS, SUCH BROKER-DEALER WILL NOT BE DEEMED TO ADMIT THAT IT IS AN
"UNDERWRITER" WITHIN THE MEANING OF THE SECURITIES ACT).

     FBS AND THE TRUST HAVE AGREED THAT, SUBJECT TO THE PROVISIONS OF THE
CAPITAL SECURITIES REGISTRATION RIGHTS AGREEMENT, THE PROSPECTUS, AS IT MAY BE
AMENDED OR SUPPLEMENTED FROM TIME TO TIME, MAY BE USED BY A PARTICIPATING 
BROKER-DEALER (AS DEFINED BELOW) IN CONNECTION WITH RESALES OF NEW CAPITAL
SECURITIES RECEIVED IN EXCHANGE FOR OLD CAPITAL SECURITIES, WHERE SUCH OLD
CAPITAL SECURITIES WERE ACQUIRED BY SUCH PARTICIPATING BROKER-DEALER FOR ITS OWN
ACCOUNT AS A RESULT OF MARKET-MAKING ACTIVITIES OR OTHER TRADING ACTIVITIES, FOR
A PERIOD ENDING 90 DAYS AFTER THE EXPIRATION DATE (SUBJECT TO EXTENSION UNDER
CERTAIN LIMITED CIRCUMSTANCES DESCRIBED IN THE PROSPECTUS) OR, IF EARLIER, WHEN
ALL SUCH NEW CAPITAL SECURITIES HAVE BEEN DISPOSED OF BY SUCH PARTICIPATING
BROKER-DEALER. IN THAT REGARD, EACH BROKER-DEALER WHO ACQUIRED OLD CAPITAL
SECURITIES FOR ITS OWN ACCOUNT AS A
                                     -5-
<PAGE>
 
RESULT OF MARKET-MAKING OR OTHER TRADING ACTIVITIES (A "PARTICIPATING BROKER-
DEALER"), BY TENDERING SUCH OLD CAPITAL SECURITIES AND EXECUTING THIS LETTER OF
TRANSMITTAL, AGREES THAT, UPON RECEIPT OF NOTICE FROM FBS OR THE TRUST OF THE
OCCURRENCE OF ANY EVENT OR THE DISCOVERY OF ANY FACT WHICH MAKES ANY STATEMENT
CONTAINED OR INCORPORATED BY REFERENCE IN THE PROSPECTUS UNTRUE IN ANY MATERIAL
RESPECT OR WHICH CAUSES THE PROSPECTUS TO OMIT TO STATE A MATERIAL FACT
NECESSARY IN ORDER TO MAKE THE STATEMENTS CONTAINED OR INCORPORATED BY REFERENCE
THEREIN, IN LIGHT OF THE CIRCUMSTANCES UNDER WHICH THEY WERE MADE, NOT
MISLEADING OR OF THE OCCURRENCE OF CERTAIN OTHER EVENTS SPECIFIED IN THE CAPITAL
SECURITIES REGISTRATION RIGHTS AGREEMENT, SUCH PARTICIPATING BROKER-DEALER WILL
SUSPEND THE SALE OF NEW CAPITAL SECURITIES PURSUANT TO THE PROSPECTUS UNTIL FBS
AND THE TRUST HAVE AMENDED OR SUPPLEMENTED THE PROSPECTUS TO CORRECT SUCH
MISSTATEMENT OR OMISSION AND HAS FURNISHED COPIES OF THE AMENDED OR SUPPLEMENTED
PROSPECTUS TO THE PARTICIPATING BROKER-DEALER OR FBS OR THE TRUST HAS GIVEN
NOTICE THAT THE SALE OF THE NEW CAPITAL SECURITIES MAY BE RESUMED, AS THE CASE
MAY BE. IF FBS OR THE TRUST GIVES SUCH NOTICE TO SUSPEND THE SALE OF THE NEW
CAPITAL SECURITIES, IT SHALL EXTEND THE 90-DAY PERIOD REFERRED TO ABOVE DURING
WHICH PARTICIPATING BROKER-DEALERS ARE ENTITLED TO USE THE PROSPECTUS IN
CONNECTION WITH THE RESALE OF NEW CAPITAL SECURITIES BY THE NUMBER OF DAYS
DURING THE PERIOD FROM AND INCLUDING THE DATE OF THE GIVING OF SUCH NOTICE TO
AND INCLUDING THE DATE WHEN PARTICIPATING BROKER-DEALERS SHALL HAVE RECEIVED
COPIES OF THE SUPPLEMENTED OR AMENDED PROSPECTUS NECESSARY TO PERMIT RESALES OF
THE NEW CAPITAL SECURITIES OR TO AND INCLUDING THE DATE ON WHICH FBS OR THE
TRUST HAS GIVEN NOTICE THAT THE SALE OF NEW CAPITAL SECURITIES MAY BE RESUMED,
AS THE CASE MAY BE.

     Holders of Old Capital Securities whose Old Capital Securities are accepted
for exchange will not receive accrued interest on such Old Capital Securities
for any period from and after the last Interest Payment Date to which interest
has been paid or duly provided for on such Old Capital Securities prior to the
original issue date of the New Capital Securities or, if no such interest has
been paid or duly provided for, will not receive any accrued interest on such
Old Capital Securities, and the undersigned waives the right to receive any
interest on such Old Capital Securities accrued from and after such Interest
Payment Date or, if no such interest has been paid or duly provided for, from
and after May 15, 1997.

     All authority herein conferred or agreed to be conferred in this Letter of
Transmittal shall survive the death or incapacity of the undersigned and any
obligation of the undersigned hereunder shall be binding upon the heirs,
executors, administrators, personal representatives, trustees in bankruptcy,
legal representatives, successors and assigns of the undersigned.  Except as
stated in the Prospectus, this tender is irrevocable.

                                      -6-
<PAGE>
- --------------------------------------------------------------------------------
 
                              HOLDER(S) SIGN HERE
                         (SEE INSTRUCTIONS 2, 5 AND 6)
               (PLEASE COMPLETE SUBSTITUTE FORM W-9 ON PAGE 14)
     (NOTE: SIGNATURE(S) MUST BE GUARANTEED IF REQUIRED BY INSTRUCTION 2)

     Must be signed by registered holder(s) exactly as name(s) appear(s) on
Certificate(s) for the Old Capital Securities hereby tendered or on a security
position listing, or by any person(s) authorized to become the registered
holder(s) by endorsements and documents transmitted herewith (including such
opinions of counsel, certifications and other information as may be required by
the Trust or the Trustee for the Old Capital Securities to comply with the
restrictions on transfer applicable to the Old Capital Securities). If signature
is by an attorney-in-fact, executor, administrator, trustee, guardian, officer
of a corporation or another acting in a fiduciary capacity or representative
capacity, please set forth the signer's full title. See Instruction 5.

  ._________________________________________________________________________.


  ._________________________________________________________________________.

                          (SIGNATURE(S) OF HOLDER(S))

Date:  ________________________, 199__

Name(s)  ______________________________________________________________________

         ______________________________________________________________________
                                    (PLEASE PRINT)

Capacity (full title) _________________________________________________________

Address  ______________________________________________________________________
         ______________________________________________________________________
         ______________________________________________________________________
                                  (INCLUDE ZIP CODE)

Area Code and Telephone Number ________________________________________________

 ______________________________________________________________________________
              (TAX IDENTIFICATION OR SOCIAL SECURITY NUMBERS(S))

                           GUARANTEE OF SIGNATURE(S)
                          (SEE INSTRUCTIONS 2 AND 5)

  ._________________________________________________________________________.
                             (AUTHORIZED SIGNATURE)

Date:  ________________________, 199__

Name of Firm __________________________________________________________________

Capacity (full title) _________________________________________________________
                                (PLEASE PRINT)

Address  ______________________________________________________________________
         ______________________________________________________________________
         ______________________________________________________________________
                               (INCLUDE ZIP CODE)

Area Code and Telephone Number ________________________________________________

- --------------------------------------------------------------------------------

                                      -7-
<PAGE>
 
                         SPECIAL ISSUANCE INSTRUCTIONS
                         (SEE INSTRUCTIONS 1, 5 AND 6)

To be completed ONLY if the New Capital Securities are to be issued in the name
of someone other than the registered holder of the Old Capital Securities whose
name(s) appear(s) above.


Issue New Capital Securities to:
[_] Old Capital Securities not tendered
[_] Exchange Capital Securities, to:

Name(s)  
         -----------------------------------------------------------------------
Address  
         -----------------------------------------------------------------------

         -----------------------------------------------------------------------

         -----------------------------------------------------------------------
                              (INCLUDE ZIP CODE)

Area Code and
 Telephone Number 
                  --------------------------------------------------------------

                  --------------------------------------------------------------

 -------------------------------------------------------------------------------
                         (TAX IDENTIFICATION OR SOCIAL
                             SECURITY NUMBERS(S))


                         SPECIAL DELIVERY INSTRUCTIONS
                         (SEE INSTRUCTIONS 1, 5 AND 6)

To be completed ONLY if New Capital Securities are to be sent to someone other
than the registered holder of the Old Capital Securities whose name(s) appear(s)
above, or such registered holder(s) at an address other than that shown above.

Mail New Capital Securities to:
[_] Old Capital Securities not tendered
[_] Exchange Capital Securities, to:

Name(s)  
         -----------------------------------------------------------------------
Address  
         -----------------------------------------------------------------------

         -----------------------------------------------------------------------

         -----------------------------------------------------------------------
                                (INCLUDE CODE)

Area Code and
 Telephone Number 
                  --------------------------------------------------------------


- --------------------------------------------------------------------------------
                         (TAX IDENTIFICATION OR SOCIAL
                             SECURITY NUMBERS(S))

                                      -8-
<PAGE>
 
                                 INSTRUCTIONS

        FORMING PART OF THE TERMS AND CONDITIONS OF THE EXCHANGE OFFER

     1.   DELIVERY OF LETTER OF TRANSMITTAL AND CERTIFICATES; GUARANTEED
DELIVERY PROCEDURES. This Letter of Transmittal is to be completed either if (a)
Certificates are to be forwarded herewith or (b) tenders are to be made pursuant
to the procedures for tender by book-entry transfer set forth in "The Exchange
Offer--Procedures for Tendering Old Capital Securities" in the Prospectus.
Certificates, or timely confirmation of a book-entry transfer of such Old
Capital Securities into the Exchange Agent's account at DTC, as well as this
Letter of Transmittal (or facsimile thereof), properly completed and duly
executed, with any required signature guarantees, and any other documents
required by this Letter of Transmittal, must be received by the Exchange Agent
at its address set forth herein on or prior to the Expiration Date. Old Capital
Securities may be tendered in whole or in part in the principal amount of
$100,000 (100 Capital Securities) and integral multiples of $1,000 in excess
thereof, provided that, if any Old Capital Securities are tendered for exchange
in part, the untendered principal amount thereof must be $100,000 (100 Capital
Securities) or any integral multiple of $1,000 in excess thereof.

     Holders who wish to tender their Old Capital Securities and (i) whose Old
Capital Securities are not immediately available or (ii) who cannot deliver
their Old Capital Securities, this Letter of Transmittal and all other required
documents to the Exchange Agent on or prior to the Expiration Date or (iii) who
cannot complete the procedures for delivery by book-entry transfer on a timely
basis, may tender their Old Capital Securities by properly completing and duly
executing a Notice of Guaranteed Delivery pursuant to the guaranteed delivery
procedures set forth in "The Exchange Offer--Procedures for Tendering Old
Capital Securities" in the Prospectus. Pursuant to such procedures: (i) such
tender must be made by or through an Eligible Institution (as defined below);
(ii) a properly completed and duly executed Notice of Guaranteed Delivery,
substantially in the form made available by the Company, must be received by the
Exchange Agent on or prior to the Expiration Date; and (iii) the Certificates
(or a book-entry confirmation (as defined in the Prospectus)) representing all
tendered Old Capital Securities, in proper form for transfer, together with a
Letter of Transmittal (or facsimile thereof), properly completed and duly
executed, with any required signature guarantees and any other documents
required by this Letter of Transmittal, must be received by the Exchange Agent
within five New York Stock Exchange, Inc. trading days after the date of
execution of such Notice of Guaranteed Delivery, all as provided in "The
Exchange Offer--Procedures for Tendering Old Capital Securities" in the
Prospectus.

     The Notice of Guaranteed Delivery may be delivered by hand or transmitted
by facsimile or mail to the Exchange Agent, and must include a guarantee by an
Eligible Institution in the form set forth in such Notice. For Old Capital
Securities to be properly tendered pursuant to the guaranteed delivery
procedure, the Exchange Agent must receive a Notice of Guaranteed Delivery on or
prior to the Expiration Date. As used herein and in the Prospectus, "Eligible
Institution" means a firm or other entity identified in Rule 17Ad-15 under the
Exchange Act as "an eligible guarantor institution," including (as such terms
are defined therein) (i) a bank; (ii) a broker, dealer, municipal securities
broker or dealer or government securities broker or dealer; (iii) a credit
union; (iv) a national securities exchange, registered securities association or
clearing agency; or (v) a savings association that is a participant in a
Securities Transfer Association.

     THE METHOD OF DELIVERY OF CERTIFICATES, THIS LETTER OF TRANSMITTAL AND ALL
OTHER REQUIRED DOCUMENTS IS AT THE OPTION AND SOLE RISK OF THE TENDERING HOLDER
AND THE DELIVERY WILL BE DEEMED MADE ONLY WHEN ACTUALLY RECEIVED BY THE EXCHANGE
AGENT. IF DELIVERY IS BY MAIL, REGISTERED MAIL WITH RETURN RECEIPT REQUESTED,
PROPERLY INSURED, OR OVERNIGHT DELIVERY SERVICE IS

                                      -9-
<PAGE>
 
RECOMMENDED. IN ALL CASES, SUFFICIENT TIME SHOULD BE ALLOWED TO ENSURE TIMELY
DELIVERY.

     Neither FBS nor the Trust will accept any alternative, conditional or
contingent tenders. Each tendering holder, by execution of a Letter of
Transmittal (or facsimile thereof), waives any right to receive any notice of
the acceptance of such tender.

     2.   GUARANTEE OF SIGNATURES. No signature guarantee on this Letter of
Transmittal is required if:

          (i)   this Letter of Transmittal is signed by the registered holder
                (which term, for purposes of this document, shall include any
                participant in DTC whose name appears on a security position
                listing as the owner of the Old Capital Securities) of Old
                Capital Securities tendered herewith, unless such holder(s) has
                completed either the box entitled "Special Issuance
                Instructions" or the box entitled "Special Delivery
                Instructions" above, or

          (ii)  such Old Capital Securities are tendered for the account of a
                firm that is an Eligible Institution.

     In all other cases, an Eligible Institution must guarantee the signature(s)
on this Letter of Transmittal. See Instruction 5.

     3.   INADEQUATE SPACE. If the space provided in the box captioned
"Description of Old Capital Securities" is inadequate, the Certificate number(s)
and/or the principal amount of Old Capital Securities and any other required
information should be listed on a separate signed schedule which is attached to
this Letter of Transmittal.

     4.   PARTIAL TENDERS AND WITHDRAWAL RIGHTS. Tenders of Old Capital
Securities will be accepted only in the principal amount of $100,000 (100
Capital Securities) and integral multiples of $1,000 in excess thereof, provided
that if any Old Capital Securities are tendered for exchange in part, the
untendered principal amount thereof must be $100,000 (100 Capital Securities) or
any integral multiple of $1,000 in excess thereof. If less than all the Old
Capital Securities evidenced by any Certificate submitted are to be tendered,
fill in the principal amount of Old Capital Securities which are to be tendered
in the box entitled "Principal Amount of Old Capital Securities Tendered (if
less than all)." In such case, new Certificate(s) for the remainder of the Old
Capital Securities that were evidenced by your old Certificate(s) will only be
sent to the holder of the Old Capital Security, promptly after the Expiration
Date. All Old Capital Securities represented by Certificates delivered to the
Exchange Agent will be deemed to have been tendered unless otherwise indicated.

     Except as otherwise provided herein, tenders of Old Capital Securities may
be withdrawn at any time on or prior to the Expiration Date. In order for a
withdrawal to be effective on or prior to that time, a written, telegraphic,
telex or facsimile transmission of such notice of withdrawal must be timely
received by the Exchange Agent at one of its addresses set forth above or in the
Prospectus on or prior to the Expiration Date. Any such notice of withdrawal
must specify the name of the person who tendered the Old Capital Securities to
be withdrawn, the aggregate principal amount of Old Capital Securities to be
withdrawn, and (if Certificates for Old Capital Securities have been tendered)
the name of the registered holder of the Old Capital Securities as set forth on
the Certificate for the Old Capital Securities, if different from that of the
person who tendered such Old Capital Securities. If Certificates for the Old
Capital Securities have been delivered or otherwise identified to the Exchange
Agent, then prior to the physical release of such Certificates for the Old
Capital Securities, the tendering holder must submit the serial numbers shown on
the particular Certificates for the Old Capital Securities to be withdrawn and
the signature on the notice of withdrawal must be guaranteed by an Eligible
Institution, except in the case of Old Capital Securities tendered for the
account of an

                                     -10-
<PAGE>
 
Eligible Institution. If Old Capital Securities have been tendered pursuant to
the procedures for book-entry transfer set forth in "The Exchange Offer--
Procedures for Tendering Old Capital Securities," the notice of withdrawal must
specify the name and number of the account at DTC to be credited with the
withdrawal of Old Capital Securities, in which case a notice of withdrawal will
be effective if delivered to the Exchange Agent by written, telegraphic, telex
or facsimile transmission. Withdrawals of tenders of Old Capital Securities may
not be rescinded. Old Capital Securities properly withdrawn will not be deemed
validly tendered for purposes of the Exchange Offer, but may be retendered at
any subsequent time on or prior to the Expiration Date by following any of the
procedures described in the Prospectus under "The Exchange Offer--Procedures for
Tendering Old Capital Securities."

     All questions as to the validity, form and eligibility (including time of
receipt) of such withdrawal notices will be determined by FBS and the Trust, in
their sole discretion, whose determination shall be final and binding on
all parties. FBS and the Trust, any affiliates or assigns of FBS and the Trust,
the Exchange Agent or any other person shall not be under any duty to give any
notification of any irregularities in any notice of withdrawal or incur any
liability for failure to give any such notification. Any Old Capital Securities
which have been tendered but which are withdrawn will be returned to the holder
thereof without cost to such holder promptly after withdrawal.

     5.   SIGNATURES ON LETTER OF TRANSMITTAL, ASSIGNMENTS AND ENDORSEMENTS. If
this Letter of Transmittal is signed by the registered holder(s) of the Old
Capital Securities tendered hereby, the signature(s) must correspond exactly
with the name(s) as written on the face of the Certificate(s) without
alteration, enlargement or any change whatsoever.

     If any of the Old Capital Securities tendered hereby are owned of record by
two or more joint owners, all such owners must sign this Letter of Transmittal.

     If any tendered Old Capital Securities are registered in different name(s)
on several Certificates, it will be necessary to complete, sign and submit as
many separate Letters of Transmittal (or facsimiles thereof) as there are
different registrations of Certificates.

     If this Letter of Transmittal or any Certificates or bond powers are signed
by trustees, executors, administrators, guardians, attorneys-in-fact, officers
of corporations or others acting in a fiduciary or representative capacity, such
persons should so indicate when signing and must submit proper evidence
satisfactory to FBS and the Trust, in their sole discretion, of such persons'
authority to so act.

     When this Letter of Transmittal is signed by the registered owner(s) of the
Old Capital Securities listed and transmitted hereby, no endorsement(s) of
Certificate(s) or separate bond power(s) are required unless New Capital
Securities are to be issued in the name of a person other than the registered
holder(s). Signature(s) on such Certificate(s) or bond power(s) must be
guaranteed by an Eligible Institution.

     If this Letter of Transmittal is signed by a person other than the
registered owner(s) of the Old Capital Securities listed, the Certificates must
be endorsed or accompanied by appropriate bond powers, signed exactly as the
name or names of the registered owner(s) appear(s) on the Certificates, and also
must be accompanied by such opinions of counsel, certifications and other
information as FBS, the Trust or the Trustee for the Old Capital Securities may
require in accordance with the restrictions on transfer applicable to the Old
Capital Securities. Signatures on such Certificates or bond powers must be
guaranteed by an Eligible Institution.

     6.   SPECIAL ISSUANCE AND DELIVERY INSTRUCTIONS. If New Capital Securities
are to be issued in the name of a person other than the signer of this Letter of
Transmittal, or if New Capital Securities are to be sent to someone other than
the signer of this Letter of Transmittal or to an address other than that shown
above, the appropriate boxes on this Letter of Transmittal should be completed.
Certificates for Old Capital Securities not exchanged will be returned by mail
or, if

                                     -11-
<PAGE>
 
tendered by book-entry transfer, by crediting the account indicated above
maintained at DTC. See Instruction 4.

     7.   IRREGULARITIES. FBS and the Trust will determine, in their sole
discretion, all questions as to the form of documents, validity, eligibility
(including time of receipt) and acceptance for exchange of any tender of Old
Capital Securities, which determination shall be final and binding on all
parties. FBS and the Trust reserve the absolute right to reject any and all
tenders determined by either of them not to be in proper form or the acceptance
of which, or exchange for, may, in the view of counsel to FBS and the Trust, be
unlawful. FBS and the Trust also reserve the absolute right, subject to
applicable law, to waive any of the conditions of the Exchange Offer set forth
in the Prospectus under "The Exchange Offer--Certain Conditions to the Exchange
Offer" or any conditions or irregularity in any tender of Old Capital Securities
of any particular holder whether or not similar conditions or irregularities are
waived in the case of other holders. FBS's and the Trust's interpretation of the
terms and conditions of the Exchange Offer (including this Letter of Transmittal
and the instructions hereto) will be final and binding. No tender of Old Capital
Securities will be deemed to have been validly made until all irregularities
with respect to such tender have been cured or waived. FBS, the Trust, any
affiliates or assigns of FBS, the Trust, the Exchange Agent, or any other person
shall not be under any duty to give notification of any irregularities in
tenders or incur any liability for failure to give such notification.

     8.   QUESTIONS, REQUESTS FOR ASSISTANCE AND ADDITIONAL COPIES. Questions
and requests for assistance may be directed to the Exchange Agent at its address
and telephone number set forth on the front of this Letter of Transmittal.
Additional copies of the Prospectus, the Notice of Guaranteed Delivery and the
Letter of Transmittal may be obtained from the Exchange Agent or from your
broker, dealer, commercial bank, trust company or other nominee.
 
     9.   31% BACKUP WITHHOLDING; SUBSTITUTE FORM W-9. Under U.S. Federal income
tax law, a holder whose tendered Old Capital Securities are accepted for
exchange is required to provide the Exchange Agent with such holder's correct
taxpayer identification number ("TIN") on Substitute Form W-9 below. If the
Exchange Agent is not provided with the correct TIN, the Internal Revenue
Service (the "IRS") may subject the holder or other payee to a $50 penalty. In
addition, payments to such holders or other payees with respect to Old Capital
Securities exchanged pursuant to the Exchange Offer may be subject to 31% backup
withholding.

     The box in Part 2 of the Substitute Form W-9 may be checked if the
tendering holder has not been issued a TIN and has applied for a TIN or intends
to apply for a TIN in the near future. If the box in Part 2 is checked, the
holder or other payee must also complete the Certificate of Awaiting Taxpayer
Identification Number below in order to avoid backup withholding.
Notwithstanding that the box in Part 2 is checked and the Certificate of
Awaiting Taxpayer Identification Number is completed, the Exchange Agent will
withhold 31% of all payments made prior to the time a properly certified TIN is
provided to the Exchange Agent. The Exchange Agent will retain such amounts
withheld during the 60 day period following the date of the Substitute Form W-9.
If the holder furnishes the Exchange Agent with its TIN within 60 days after the
date of the Substitute Form W-9, the amounts retained during the 60 day period
will be remitted to the holder and no further amounts shall be retained or
withheld from payments made to the holder thereafter. If, however, the holder
has not provided the Exchange Agent with its TIN within such 60 day period,
amounts withheld will be remitted to the IRS as backup withholding. In addition,
31% of all payments made thereafter will be withheld and remitted to the IRS
until a correct TIN is provided.

     The holder is required to give the Exchange Agent the TIN (e.g., social
security number or employer identification number) of the registered owner of
the Old Capital Securities or of the last transferee appearing on the transfers
attached to, or endorsed on, the Old Capital Securities. If the Old Capital
Securities are registered in more than one name or are not in the name of the
actual owner, consult the enclosed "Guidelines for Certification of Taxpayer
Identification Number on Substitute Form W-9" for additional guidance on which
number to report.

                                     -12-
<PAGE>
 
     Certain holders (including, among others, corporations, financial
institutions and certain foreign persons) may not be subject to these backup
withholding and reporting requirements. Such holders should nevertheless
complete the attached Substitute Form W-9 below, and write "exempt" on the face
thereof, to avoid possible erroneous backup withholding. A foreign person may
qualify as an exempt recipient by submitting a properly completed IRS Form W-8,
signed under penalties of perjury, attesting to that holder's exempt status.
Please consult the enclosed "Guidelines for Certification of Taxpayer
Identification Number on Substitute Form W-9" for additional guidance on which
holders are exempt from backup withholding.

     Backup withholding is not an additional U.S. Federal income tax. Rather,
the U.S. Federal income tax liability of a person subject to backup withholding
will be reduced by the amount of tax withheld. If withholding results in an
overpayment of taxes, a refund may be obtained.

     10.  LOST, DESTROYED OR STOLEN CERTIFICATES. If any Certificate(s)
representing Old Capital Securities have been lost, destroyed or stolen, the
holder should promptly notify the Exchange Agent. The holder will then be
instructed as to the steps that must be taken in order to replace the
Certificate(s). This Letter of Transmittal and related documents cannot be
processed until the procedures for replacing lost, destroyed or stolen
Certificate(s) have been followed.

     11.  SECURITY TRANSFER TAXES. Holders who tender their Old Capital
Securities for exchange will not be obligated to pay any transfer taxes in
connection therewith. If, however, New Capital Securities are to be delivered
to, or are to be issued in the name of, any person other than the registered
holder of the Old Capital Securities tendered, or if a transfer tax is imposed
for any reason other than the exchange of Old Capital Securities in connection
with the Exchange Offer, then the amount of any such transfer tax (whether
imposed on the registered holder or any other persons) will be payable by the
tendering holder. If satisfactory evidence of payment of such taxes or exemption
therefrom is not submitted with the Letter of Transmittal, the amount of such
transfer taxes will be billed directly to such tendering holder.

     IMPORTANT: THIS LETTER OF TRANSMITTAL (OR FACSIMILE THEREOF) AND ALL OTHER
REQUIRED DOCUMENTS MUST BE RECEIVED BY THE EXCHANGE AGENT ON OR PRIOR TO THE
EXPIRATION DATE.

                                     -13-
<PAGE>
 
                            TO BE COMPLETED BY ALL
                           TENDERING SECURITYHOLDERS

                              (SEE INSTRUCTION 9)

                    PAYER'S NAME:  WILMINGTON TRUST COMPANY


SUBSTITUTE
FORM W-9

DEPARTMENT OF THE TREASURY
INTERNAL REVENUE SERVICE

PAYOR'S REQUEST FOR TAXPAYER
IDENTIFICATION NUMBER (TIN) AND CERTIFICATION

PART 1-PLEASE PROVIDE YOUR TIN ON THE LINE AT RIGHT AND CERTIFY BY SIGNING AND
DATING BELOW

TIN _________________
Social Security Number or Employer Identification Number

NAME     (Please Print)

ADDRESS

CITY                  STATE          ZIP CODE

PART 2
Awaiting
TIN  [_]

Part 3 - CERTIFICATION - UNDER THE PENALTIES OF PERJURY, I CERTIFY THAT (1) the
number shown on this form is my correct taxpayer identification number (or I am
waiting for a number to be issued to me), (2) I am not subject to backup
withholding either because (i) I am exempt from backup withholding, (ii) I have
not been notified by the Internal Revenue Service ("IRS") that I am subject to
backup withholding as a result of a failure to report all interest or dividends,
or (iii) the IRS has notified me that I am no longer subject to backup
withholding, and (3) any other information provided on this form is true and
correct.
 
SIGNATURE _________________ DATE _______
 
You must cross out item (iii) in Part (2) above if you have been notified by the
IRS that you are subject to backup withholding because of underreporting
interest or dividends on your tax return and you have not been notified by the
IRS that you are no longer subject to backup withholding.


NOTE:  FAILURE TO COMPLETE AND RETURN THIS FORM MAY IN CERTAIN CIRCUMSTANCES
RESULT IN BACKUP WITHHOLDING OF 31% OF ANY AMOUNTS PAID TO YOU PURSUANT TO THE
EXCHANGE  OFFER. PLEASE  REVIEW  THE ENCLOSED  GUIDELINES FOR CERTIFICATION OF
TAXPAYER IDENTIFICATION NUMBER ON SUBSTITUTE FORM W-9 FOR ADDITIONAL DETAILS.

CERTIFICATE OF AWAITING TAXPAYER IDENTIFICATION NUMBER

     I certify under penalties of perjury that a taxpayer identification number
has not been issued to me, and either (1) I have mailed or delivered an
application to receive a taxpayer identification number to the appropriate
Internal Revenue Service Center or Social Security Administration Office or (2)
I intend to mail or deliver an application in the near future.  I understand
that if I do not provide a taxpayer identification number by the time of
payment, 31% of all payments made to me on account of the New Capital Securities
shall be retained until I provide a taxpayer identification number to the
Exchange Agent and that, if I do not provide my taxpayer identification number
within 60 days, such retained amounts shall be remitted to the Internal Revenue
Service as backup withholding and 31% of all reportable payments made to me
thereafter will be withheld and remitted to the Internal  Revenue Service until
I provide a taxpayer identification number.


Signature  ___________________________________  Date  ____________________, 1996

                                     -14-

<PAGE>
 
                                                                    EXHIBIT 99.2


                         NOTICE OF GUARANTEED DELIVERY
                                 FOR TENDER OF
                           8.09% CAPITAL SECURITIES
               (LIQUIDATION AMOUNT $1,000 PER CAPITAL SECURITY)
                                      OF
                                 FBS CAPITAL I
                     FULLY AND UNCONDITIONALLY GUARANTEED
                          BY FIRST BANK SYSTEM, INC.

     This Notice of Guaranteed Delivery, or one substantially equivalent to this
form, must be used to accept the Exchange Offer (as defined below) if (i)
certificates for the Trust's (as defined below) 8.09% Capital Securities due
November 15, 2026 (the "Old Capital Securities") are not immediately available,
(ii) Old Capital Securities, the Letter of Transmittal and all other required
documents cannot be delivered to Wilmington Trust Company (the "Exchange Agent")
on or prior to the Expiration Date (as defined in the Prospectus referred to
below) or (iii) the procedures for delivery by book-entry transfer cannot be
completed on a timely basis. This Notice of Guaranteed Delivery may be delivered
by hand, overnight courier or mail, or transmitted by facsimile transmission, to
the Exchange Agent. See "The Exchange Offer--Procedures for Tendering Old
Capital Securities" in the Prospectus.


                 THE EXCHANGE AGENT FOR THE EXCHANGE OFFER IS:
                           WILMINGTON TRUST COMPANY


                       BY MAIL/OVERNIGHT DELIVERY/HAND:

                           Wilmington Trust Company
                           Corporate Trust Operation
                              Rodney Square North
                           1100 North Market Street
                       Wilmington, Delaware  19890-0001
                               Attn: Jill Rylee
                  TO CONFIRM BY TELEPHONE OR FOR INFORMATION:

                                (302) 651-8867

                           FACSIMILE TRANSMISSIONS:

                                (302) 651-1079


     DELIVERY OF THIS NOTICE OF GUARANTEED DELIVERY TO AN ADDRESS OTHER THAN AS
SET FORTH ABOVE OR TRANSMISSION OF THIS NOTICE OF GUARANTEED DELIVERY VIA
FACSIMILE TO A NUMBER OTHER THAN AS SET FORTH ABOVE WILL NOT CONSTITUTE A VALID
DELIVERY.

     THIS NOTICE OF GUARANTEED DELIVERY IS NOT TO BE USED TO GUARANTEE
SIGNATURES. IF A SIGNATURE ON A LETTER OF TRANSMITTAL IS REQUIRED TO BE
GUARANTEED BY AN "ELIGIBLE INSTITUTION" UNDER THE INSTRUCTIONS THERETO, SUCH
SIGNATURE GUARANTEE MUST APPEAR IN THE APPLICABLE SPACE PROVIDED IN THE
SIGNATURE BOX ON THE LETTER OF TRANSMITTAL.
<PAGE>
 
Ladies and Gentlemen:

     The undersigned hereby tenders to FBS Capital I, a Delaware business trust
(the "Trust"), upon the terms and subject to the conditions set forth in the
Prospectus dated                   , 1996 (as the same may be amended or
supplemented from time to time, the "Prospectus"), and the related Letter of
Transmittal (which together constitute the "Exchange Offer"), receipt of which
is hereby acknowledged, the aggregate principal amount of Old Capital Securities
set forth below pursuant to the guaranteed delivery procedures set forth in the
Prospectus under the caption "The Exchange Offer--Procedures for Tendering Old
Capital Securities."

     Aggregate Principal                    Name(s) of Registered Holder(s):
     Amount Tendered:

     Certificate No(s).                     Address(es):
     (if available):                        Area Code and Telephone Number(s):


If Old Capital Securities will be tendered by book-entry transfer, provide the
following information:


Signature(s):
             ------------------------------------------------------------------

DTC Account Number:
                   ------------------------------------------------------------

Date:
     --------------------------------------------------------------------------


              THE GUARANTEE ON THE REVERSE SIDE MUST BE COMPLETED

                                      
                                      -2-
<PAGE>
 
                                   GUARANTEE
                   (NOT TO BE USED FOR SIGNATURE GUARANTEE)


     The undersigned, a firm or other entity identified in Rule 17Ad-15 under
the Securities Exchange Act of 1934, as amended, as an "eligible guarantor
institution," including (as such terms are defined therein): (i) a bank; (ii) a
broker, dealer, municipal securities broker, municipal securities dealer,
government securities broker, government securities dealer; (iii) a credit
union; (iv) a national securities exchange, registered securities association or
clearing agency; or (v) a savings association that is a participant in a
Securities Transfer Association recognized program (each of the foregoing being
referred to as an "Eligible Institution"), hereby guarantees to deliver to the
Exchange Agent, at one of its addresses set forth above, either the Old Capital
Securities tendered hereby in proper form for transfer, or confirmation of the
book-entry transfer of such Old Capital Securities to the Exchange Agent's
account at The Depositary Trust Company ("DTC"), pursuant to the procedures for
book-entry transfer set forth in the Prospectus, in either case together with
one or more properly completed and duly executed Letter(s) of Transmittal (or
facsimile thereof) and any other required documents within five business days
after the date of execution of this Notice of Guaranteed Delivery.

     The undersigned acknowledges that it must deliver the Letter(s) of
Transmittal and the Old Capital Securities tendered hereby to the Exchange Agent
within the time period set forth above and that failure to do so could result in
a financial loss to the undersigned.


Name of Firm
             ------------------------------------------------------------------

(Authorized Signature)
                      ---------------------------------------------------------
                                    (Title)

Address
       ------------------------------------------------------------------------

       ------------------------------------------------------------------------ 
                              (INCLUDE ZIP CODE)

Area Code and Telephone Number
                              -------------------------------------------------

Date:
     --------------------------------


NOTE:  DO NOT SEND OLD CAPITAL SECURITIES WITH THIS NOTICE OF GUARANTEED
       DELIVERY. ACTUAL SURRENDER OF OLD CAPITAL SECURITIES MUST BE MADE
       PURSUANT TO, AND BE ACCOMPANIED BY, A PROPERLY COMPLETED AND DULY
       EXECUTED LETTER OF TRANSMITTAL AND ANY OTHER REQUIRED DOCUMENTS.

                                      -3-

<PAGE>
 
                                                                    EXHIBIT 99.3



                      [FORM OF EXCHANGE AGENCY AGREEMENT]


                             ______________, 1996


Wilmington Trust Company
Rodney Square North
1100 North Market Street
Wilmington, Delaware 19890-0001

Attention: Corporate Trust Operation

Ladies and Gentlemen:

     FIRST BANK SYSTEM, INC., a Delaware corporation, as Depositor ("FBS") and
FBS CAPITAL I, a Delaware business trust (the "Trust") hereby appoint WILMINGTON
TRUST COMPANY ("Wilmington Trust") to act as exchange agent (the "Exchange
Agent") in connection with an exchange offer by FBS and the Trust to exchange up
to $300,000,000 aggregate Liquidation Amount of the Trust's 8.09% Capital
Securities due November 15, 2026 (the "New Capital Securities"), which have been
registered under the Securities Act of 1933, as amended (the "Securities Act"),
for a like aggregate Liquidation Amount of the Trust's outstanding 8.09% Capital
Securities due November 15, 2026 (the "Old Capital Securities" and together with
the New Capital Securities, the "Capital Securities"). The terms and conditions
of the exchange offer are set forth in a Prospectus dated , 1996 (as the same
may be amended or supplemented from time to time, the "Prospectus") and in the
related Letter of Transmittal, which together constitute the "Exchange Offer."
The registered holders of the Capital Securities are hereinafter referred to as
the "Holders." Capitalized terms used herein and not defined shall have the
respective meanings described thereto in the Prospectus.

     On the basis of the representations, warranties and agreements of FBS, the
Trust and Wilmington Trust contained herein and subject to the terms and
conditions hereof, the following sets forth the agreement between FBS,
the Trust and Wilmington Trust as Exchange Agent for the Exchange Offer:

1.   APPOINTMENT AND DUTIES AS EXCHANGE AGENT.

     a.   FBS and the Trust hereby authorize Wilmington Trust to act as
Exchange Agent in connection with the Exchange Offer and Wilmington Trust agrees
to act as Exchange Agent in connection with the Exchange Offer. As Exchange
Agent, Wilmington Trust will perform those services as are outlined herein,
including, but not limited to, accepting tenders of Old Capital Securities, and
communicating generally regarding the Exchange Offer with brokers, dealers,
commercial banks, trust companies and other persons, including Holders of the
Old Capital Securities.

     b.   FBS and the Trust acknowledge and agree that Wilmington Trust
has been retained pursuant to this Agreement to act solely as Exchange Agent in
connection with the Exchange Offer, and in such capacity, Wilmington Trust shall
perform such duties in good faith as are outlined herein.
<PAGE>
 
     c.   Wilmington Trust will examine each of the Letters of Transmittal and
certificates for Old Capital Securities and any other documents delivered or
mailed to Wilmington Trust by or for Holders of the Old Capital Securities, and
any book-entry confirmations (as defined in the Prospectus) received by
Wilmington Trust with respect to the Old Capital Securities, to ascertain
whether: (i) the Letters of Transmittal and any such other documents are duly
executed and properly completed in accordance with the instructions set forth
therein and that such book-entry confirmations are in due and proper form and
contain the information required to be set forth therein, (ii) the Old Capital
Securities have otherwise been properly tendered, (iii) Old Capital Securities
tendered in part are tendered in principal amounts of $100,000 (100 Capital
Securities) and integral multiples of $1,000 in excess thereof and that if any
Old Capital Securities are tendered for exchange in part, the untendered
principal amount thereof is $100,000 (100 Capital Securities) or any integral
multiple of $1,000 in excess thereof, and (iv) Holders have provided their
correct Tax Identification Number or required certification. Determination of
all questions as to validity, form, eligibility and acceptance for exchange of
any Old Capital Securities shall be made by FBS or the Trust, whose
determination shall be final and binding. In each case where the Letters of
Transmittal or any other documents have been improperly completed or executed or
where book-entry confirmations are not in due and proper form or omit certain
information, or any of the certificates for Old Capital Securities are not in
proper form for transfer or some other irregularity in connection with the
tender or acceptance of the Old Capital Securities exists, Wilmington Trust will
endeavor upon request of FBS or the Trust to advise the tendering Holders of the
irregularity and to take any other action as FBS or the Trust may request to
cause such irregularity to be corrected. Notwithstanding the above, Wilmington
Trust shall not be under any duty to give any notification of any irregularities
in tenders or incur any liability for failure to give any such notification.

     d.   With the approval of the President, any Senior Vice President, any
Executive Vice President, any Vice President or the Treasurer or any Assistant
Treasurer of FBS, (such approval, if given orally, to be confirmed in
writing) or any other party designated by any such officer, Wilmington Trust is
authorized to waive any irregularities in connection with any tender of Old
Capital Securities pursuant to the Exchange Offer.

     e.   Tenders of Old Capital Securities may be made only as set forth in the
Letter of Transmittal and in the section of the Prospectus captioned "The
Exchange Offer" and Old Capital Securities shall be considered properly tendered
only when tendered in accordance with such procedures set forth therein.
Notwithstanding the provisions of this paragraph, Old Capital Securities which
the President, any Senior Vice President, any Executive Vice President, any Vice
President or the Treasurer, any Assistant Treasurer or any other designated
officer of FBS, shall approve (such approval, if given orally, to be
confirmed in writing) as having been properly tendered shall be considered to be
properly tendered.

     f.   Wilmington Trust shall advise FBS and the Trust with respect
to any Old Capital Securities received as soon as possible after 5:00 p.m., New
York City time, on the Expiration Date and accept its instructions with respect
to disposition of such Old Capital Securities.

     g.   Wilmington Trust shall deliver certificates for Old Capital Securities
tendered in part to the transfer agent for split-up and shall return any
untendered Old Capital Securities or Old Capital Securities which have not been
accepted by FBS and the Trust to the Holders promptly after the expiration or
termination of the Exchange Offer.

                                      -2-
<PAGE>
 
     h.   Upon acceptance by FBS and the Trust of any Old Capital Securities
duly tendered pursuant to the Exchange Offer (such acceptance if given orally,
to be confirmed in writing), FBS and the Trust will cause New Capital Securities
in exchange therefor to be issued as promptly as possible and Wilmington Trust
will deliver such New Capital Securities on behalf of FBS and the Trust at the
rate of $100,000 (100 Capital Securities) principal amount of New Capital
Securities for each $100,000 principal amount of Old Capital Securities tendered
as promptly as possible after acceptance by FBS and the Trust of the Old Capital
Securities for exchange and notice (such notice if given orally, to be confirmed
in writing) of such acceptance by FBS and the Trust. Unless otherwise instructed
by FBS or the Trust, Wilmington Trust shall issue New Capital Securities only in
denominations of $100,000 (100 Capital Securities) or any integral multiple of
$1,000 in excess thereof.

     i.   Tenders pursuant to the Exchange Offer are irrevocable, except that,
subject to the terms and the conditions set forth in the Prospectus and the
Letter of Transmittal, Old Capital Securities tendered pursuant to the Exchange
Offer may be withdrawn at any time on or prior to the Expiration Date in
accordance with the terms of the Exchange Offer.

     j.   Notice of any decision by FBS and the Trust not to exchange any Old
Capital Securities tendered shall be given by FBS or the Trust either orally (if
given orally, to be confirmed in writing) or in a written notice to Wilmington
Trust.

     k.   If, pursuant to the Exchange Offer, FBS and the Trust do not
accept for exchange all or part of the Old Capital Securities tendered because
of an invalid tender, the occurrence of certain other events set forth in the
Prospectus under the caption "The Exchange Offer--Certain Conditions to the
Exchange Offer" or otherwise, Wilmington Trust shall, upon notice from the
Company and the Trust (such notice if given orally, to be confirmed in writing),
promptly after the expiration or termination of the Exchange Offer return such
certificates for unaccepted Old Capital Securities (or effect appropriate book-
entry transfer), together with any related required documents and the Letters of
Transmittal relating thereto that are in Wilmington Trust's possession, to the
persons who deposited such certificates.

     l.   Certificates for reissued Old Capital Securities, unaccepted Old
Capital Securities or New Capital Securities shall be forwarded by (a) first-
class certified mail, return receipt requested under a blanket surety bond
obtained by Wilmington Trust protecting Wilmington Trust, FBS and the
Trust from loss or liability arising out of the non-receipt or non-delivery of
such certificates or (b) by registered mail insured by Wilmington Trust
separately for the replacement value of each such certificate.

     m.   Wilmington Trust is not authorized to pay or offer to pay any
concessions, commissions or solicitation fees to any broker, dealer, commercial
bank, trust company or other nominee or to engage or use any person to solicit
tenders.

     n.   As Exchange Agent, Wilmington Trust:

          (i)  shall have no duties or obligations other than those specifically
     set forth herein or as may be subsequently agreed to in writing;

                                      -3-
<PAGE>
 
          (ii)   will make no representations and will have no responsibilities
     as to the validity, value or genuineness of any of the certificates for the
     Old Capital Securities deposited pursuant to the Exchange Offer, and will
     not be required to and will make no representation as to the validity,
     value or genuineness of the Exchange Offer; 

          (iii)  shall not be obligated to take any legal action hereunder which
     might in Wilmington Trust's reasonable judgment involve any expense or
     liability, unless Wilmington Trust shall have been furnished with
     indemnity satisfactory to it and additional fees for the taking of such
     action;

          (iv)   may reasonably rely on and shall be protected in acting in
     reliance upon any certificate, instrument, opinion, notice, letter,
     telegram or other document or security delivered to Wilmington Trust and
     reasonably believed by Wilmington Trust to be genuine and to have been
     signed by the proper party or parties;

          (v)    may reasonably act upon any tender, statement, request,
     comment, agreement or other instrument whatsoever not only as to its due
     execution and validity and effectiveness of its provisions, but also as to
     the truth and accuracy of any information contained therein, which
     Wilmington Trust believes in good faith to be genuine and to have been
     signed or represented by a proper person or persons acting in a fiduciary
     or representative capacity;

          (vi)   may rely on and shall be protected in acting upon written or
     oral instructions from the President, any Senior Vice President, any
     Executive Vice President, any Vice President, the Treasurer, any Assistant
     Treasurer or any other designated officer of FBS;

          (vii)  may consult with its own counsel with respect to any questions
     relating to Wilmington Trust's duties and responsibilities and the 
     advice of such counsel shall be full and complete authorization and
     protection in respect of any action taken, suffered or omitted to be taken
     by Wilmington Trust hereunder in good faith and in accordance with the
     advice of such counsel; and

          (viii) shall not advise any person tendering Old Capital Securities
     pursuant to the Exchange Offer as to whether to tender or refrain from
     tendering all or any portion of its Old Capital Securities or as to the
     market value, decline or appreciation in market value of any Old Capital
     Securities that may or may not occur as a result of the Exchange Offer or
     as to the market value of the New Capital Securities. Wilmington Trust
     shall take such action as may from time to time be requested by FBS
     or the Trust to furnish copies of the Prospectus, Letter of Transmittal and
     the Notice of Guaranteed Delivery or such other forms as may be approved
     from time to time by FBS and the Trust, to all persons requesting
     such documents and to accept and comply with telephone requests for
     information relating to the Exchange Offer. FBS and the Trust will
     furnish you with copies of such documents at your request. Notwithstanding
     the foregoing, it is understood that FBS and the Trust will be primarily
     responsible for supplying copies of the Prospectus, the Letter of 
     Transmittal and the Notice of Guaranteed Delivery and responding to
     requests for confirmation.

     p.   Wilmington Trust shall advise orally and promptly thereafter confirm
in writing to FBS and the Trust and such other person or persons as FBS and the
Trust may request, daily (and more frequently during the week immediately
preceding the Expiration Date and if otherwise reasonably requested) up to and
including the Expiration Date, the aggregate principal

                                      -4-
<PAGE>
 
amount of Old Capital Securities which have been tendered pursuant to the terms
of the Exchange Offer and the items received by Wilmington Trust pursuant to the
Exchange Offer and this Agreement. In addition, Wilmington Trust will also
provide, and cooperate in making available to FBS and the Trust, or any
such other person or persons upon request (such request if made orally, to be
confirmed in writing) made from time to time, such other information in its
possession as FBS and the Trust may reasonably request. Such cooperation
shall include, without limitation, the granting by Wilmington Trust to FBS and
the Trust, and such person or persons as FBS and the Trust may request, access
to those persons on Wilmington Trust's staff who are responsible for receiving
tenders, in order to ensure that immediately prior to the Expiration Date FBS
and the Trust shall have received adequate information in sufficient detail to
enable FBS and the Trust to decide whether to extend the Exchange Offer.
Wilmington Trust shall prepare a final list of all persons whose tenders were
accepted, the aggregate principal amount of Old Capital Securities tendered, the
aggregate principal amount of Old Capital Securities accepted and deliver said
list to FBS and the Trust.

     q.  Letters of Transmittal, book-entry confirmations and Notices of
Guaranteed Delivery shall be stamped by Wilmington Trust as to the date and the
time of receipt thereof and shall be preserved by Wilmington Trust for a period
of time at least equal to the period of time Wilmington Trust preserves other
records pertaining to the transfer of securities, or one year, whichever is
longer, and thereafter shall be delivered by Wilmington Trust to FBS and
the Trust. Wilmington Trust shall dispose of unused Letters of Transmittal and
other surplus materials by returning them to FBS or the Trust.

     r.  Wilmington Trust hereby expressly waives any lien, encumbrance or right
of set-off whatsoever that Wilmington Trust may have with respect to funds
deposited with it for the payment of transfer taxes by reasons of amounts, if
any, borrowed by FBS or the Trust, or any of its or their subsidiaries
or affiliates pursuant to any loan or credit agreement with Wilmington Trust or
for compensation owed to Wilmington Trust hereunder or for any other matter.

2.   COMPENSATION.

     $1,500 will be payable to Wilmington Trust in its capacity as Exchange
Agent; provided, that Wilmington Trust reserves the right to receive
reimbursement from FBS for any reasonable out-of-pocket expenses incurred as
Exchange Agent in performing the services described herein.

3.   INDEMNIFICATION.

     a.  The Company and the Trust hereby agree to protect, defend, indemnify
and hold harmless Wilmington Trust against and from any and all costs, losses,
liabilities, taxes, expenses (including reasonable counsel fees and
disbursements) and claims imposed upon or asserted against Wilmington Trust on
account of any action taken or omitted to be taken by Wilmington Trust in
connection with its acceptance of or performance of its duties under this
Agreement and the documents related thereto as well as the reasonable costs and
expenses of defending itself against any claim or liability arising out of or
relating to this Agreement and the documents related thereto. This
indemnification shall survive the release, discharge, termination, and/or
satisfaction of this Agreement. Anything in this Agreement to the contrary
notwithstanding, neither FBS nor the Trust shall be liable for

                                      -5-
<PAGE>
 
indemnification or otherwise for any loss, liability, cost or expense to the
extent arising out of Wilmington Trust's bad faith, gross negligence or willful
misconduct. In no case shall FBS or the Trust be liable under this
indemnification agreement with respect to any claim against Wilmington Trust
until FBS and the Trust shall be notified by Wilmington Trust, by
letter, of the written assertion of a claim against Wilmington Trust or of any
other action commenced against Wilmington Trust, promptly after Wilmington Trust
shall have received any such written assertion or shall have been served with a
summons in connection therewith, provided, that, Wilmington Trust's failure to
give such notice shall not excuse FBS or the Trust from its obligations
hereunder. FBS and the Trust shall be entitled to participate at their
own expense in the defense of any such claim or other action, and, if FBS and
the Trust so elect, FBS or the Trust may assume the defense of any pending or
threatened action against Wilmington Trust in respect of which indemnification
may be sought hereunder with counsel reasonably acceptable to Wilmington Trust,
in which case FBS or the Trust, as applicable, shall not thereafter be
responsible for the fees and disbursements of legal counsel for Wilmington Trust
under this paragraph; provided that FBS and the Trust shall not be entitled to
assume the defense of any such action if the named parties to such action
include the Company or the Trust and Wilmington Trust and representation of the
parties by the same legal counsel would, in the written opinion of counsel for
Wilmington Trust, be inappropriate due to actual or potential conflicting
interests between them. It is understood that neither FBS nor the Trust shall be
liable under this paragraph for the fees and disbursements of more than one
legal counsel for Wilmington Trust. In the event that FBS or the Trust shall
assume the defense of any such suit with counsel reasonably acceptable to
Wilmington Trust, FBS or the Trust, as applicable, shall not therewith be liable
for the fees and expenses of any counsel retained by Wilmington Trust.

     b.  Wilmington Trust agrees that, without the prior written consent of the
Company and the Trust (which consent shall not be unreasonably withheld), it
will not settle, compromise or consent to the entry of any judgment in any
pending or threatened claim, action or proceeding in respect of which
indemnification could be sought in accordance with the indemnification provision
of this Agreement (whether or not Wilmington Trust, FBS or the Trust or
any of its directors, officers and controlling persons is an actual or potential
party to such claim, action or proceeding), unless such settlement, compromise
or consent includes an unconditional release of FBS or the Trust and its
directors, officers and controlling persons from all liability arising out of
such claim, action or proceeding.

     c.  FBS agrees to indemnify and hold harmless the Trust from and
against any and all losses, claims, damages and liabilities whatsoever, as due
from the Trust under this Section.

4.   TAX INFORMATION.

     a.  FBS and the Trust shall arrange to comply with all requirements under
the tax laws of the United States, including those relating to missing Tax
Identification Numbers, and shall file any appropriate reports with the Internal
Revenue Service. FBS and the Trust understand that they are required, in
certain instances, to deduct 31% with respect to interest paid on the New
Capital Securities and proceeds from the sale, exchange, redemption or
retirement of the New Capital Securities from Holders who have not supplied
their correct Taxpayer Identification Number or required certification. Such
funds will be turned over to the Internal Revenue Service. Wilmington Trust
shall notify FBS and the Trust of any Holder who has failed to supply such
Taxpayer Identification Number or certification.

                                      -6-
<PAGE>
 
5.   GOVERNING LAW.  This Agreement shall be governed by, and construed in
accordance with, the laws of the State of Delaware applicable to contracts
executed in and to be performed in that state.

6.   NOTICES.  Any communication or notice provided for hereunder shall be in
writing and shall be given (and shall be deemed to have been given upon receipt)
by delivery in person, telecopy, or overnight delivery or by registered or
certified mail (postage prepaid, return receipt requested) to the applicable
party at the addresses indicated below:

     If to FBS:

                  First Bank System
                  First Bank Place
                  601 Second Avenue South
                  Minneapolis, Minnesota  55402-4302
                  Telecopier No.:  (612) 973-0965

                  Attention:  Treasurer

     If to the Trust:

                  c/o First Bank System, Inc.
                  First Bank Place
                  601 Second Avenue South
                  Minneapolis, Minnesota  55402-4302
                  Telecopier No.:  (612) 973-0965

                  Attention:  Treasurer

     With a copy to:

                  Dorsey & Whitney LLP
                  Pillsbury Center South
                  220 South Sixth Street
                  Minneapolis, Minnesota 55402
                  Telecopier No.:  (612) 340-8738

                  Attention:  Charles F. Sawyer, Esq.

     If to Wilmington Trust Company:

                  Corporate Trust Operation
                  Rodney Square North
                  1100 North Market Street
                  Wilmington, Delaware  19890-0001
                  Telecopier No.:  (302) 651-1079

                  Attention:  Jill Rylee

                                      -7-
<PAGE>
 
     With a copy to:

                  Richards Layton & Finger, P.A.
                  One Rodney Square
                  P.O. Box 551
                  Wilmington, Delaware  19801-0001
                  Telecopier No.:  (302) 658-6548

                  Attention:  Eric Mazie, Esq.

or, as to each party, at such other address as shall be designated by such party
in a written notice complying as to delivery with the terms of this Section.

7.   PARTIES IN INTEREST. This Agreement shall be binding upon and inure solely
to the benefit of each party hereto and nothing in this Agreement, express or
implied, is intended to or shall confer upon any other person any right, benefit
or remedy of any nature whatsoever under or by reason of this Agreement. Without
limitation to the foregoing, the parties hereto expressly agree that no holder
of Old Capital Securities or New Capital Securities shall have any right,
benefit or remedy of any nature whatsoever under or by reason of this Agreement.

8.   COUNTERPARTS; SEVERABILITY.  This Agreement may be executed in one or more
counterparts, and by different parties hereto on separate counterparts, each of
which when so executed shall be deemed an original, and all of such counterparts
shall together constitute one and the same agreement.  If any term or other
provision of this Agreement or the application thereof is invalid, illegal or
incapable of being enforced by any rule of law, or public policy, all other
provisions of this Agreement shall nevertheless remain in full force and effect
so long as the economic or legal substance of the agreements contained herein is
not affected in any manner adverse to any party.  Upon such determination that
any term or provision or the application thereof is invalid, illegal or
unenforceable, the parties hereto shall negotiate in good faith to modify this
Agreement so as to effect the original intent of the parties as closely as
possible in a mutually acceptable manner in order that the agreements contained
herein may be performed as originally contemplated to the fullest extent
possible.

9.   CAPTIONS. The descriptive headings contained in this Agreement are included
for convenience of reference only and shall not affect in any way the meaning or
interpretation of this Agreement.

10.  ENTIRE AGREEMENT; AMENDMENT. This Agreement constitutes the entire
understanding of the parties hereto with respect to the subject matter hereof.
This Agreement may not be amended or modified nor may any provision hereof be
waived except in writing signed by each party to be bound thereby.

11.  TERMINATION. This Agreement shall terminate upon the earlier of (a) the
90th day following the expiration, withdrawal, or termination of the Exchange
Offer, (b) the close of business on the date of actual receipt of written notice
by Wilmington Trust from FBS and the Trust stating that this Agreement
is terminated, (c) one year following the date of this Agreement, or (d) the
time and date on which this Agreement shall be terminated by mutual consent of
the parties hereto.

12.  MISCELLANEOUS.

     a.   Wilmington Trust hereby acknowledges receipt of the Prospectus and
the Letter of Transmittal and the Notice of Guaranteed Delivery and further
acknowledges that it has examined each of them.  Any inconsistency between this
Agreement, on the one hand, and the Prospectus and the 

                                      -8-
<PAGE>
 
Letter of Transmittal and the Notice of Guaranteed Delivery (as they may be
amended or supplemented from time to time), on the other hand, shall be resolved
in favor of the latter three documents, except with respect to the duties,
liabilities and indemnification of Wilmington Trust as Exchange Agent which
shall be controlled by this Agreement.

     Kindly indicate your willingness to act as Exchange Agent and Wilmington
Trust's acceptance of the foregoing provisions by signing in the space provided
below for that purpose and returning to FBS a copy of this Agreement so
signed, whereupon this Agreement and Wilmington Trust's acceptance shall
constitute a binding agreement between Wilmington Trust, FBS and the
Trust.


                                    Very truly yours,

                                    FIRST BANK SYSTEM, INC.



                                    By:  
                                        -------------------------------------

                                    Name:  
                                          -----------------------------------

                                    Title:  
                                           ----------------------------------
 
Accepted and agreed to as of
the date first written above: 
                                    FBS CAPITAL I
WILMINGTON TRUST COMPANY            By: First Bank System, Inc., as Depositor



By:                                 By:                                
    -----------------------------       -------------------------------------

Name:                               Name:  
      ---------------------------         -----------------------------------

Title:                              Title: 
       --------------------------          ----------------------------------


                                      -9-


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