NUVEEN TAX-EXEMPT UNIT TRUST SERIES 723
S-6EL24/A, 1994-04-08
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<PAGE>


                                                      File No. 33-52527
                                                      40 Act File No. 811-2271


                       SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D.C.  20549

                                AMENDMENT NO. 2
                                       TO
                                    FORM S-6

For Registration under the Securities Act of 1933 of Securities of Unit
Investment Trusts Registered on Form N-8B-2

A.  Exact name of Trust:     NUVEEN TAX-EXEMPT UNIT TRUST, SERIES 723
                             (formerly filed as Nuveen Tax-Exempt Unit Trust
                              Series 724 on March 7, 1994)
  
B.  Name of Depositor:       JOHN NUVEEN & CO. INCORPORATED

C.  Complete address of Depositor's principal executive offices:

                             333 West Wacker Drive
                             Chicago, Illinois  60606

D.  Name and complete address of agents for service:

                             JOHN NUVEEN & CO. INCORPORATED
                             Attn:  James J. Wesolowski
                             333 West Wacker Drive
                             Chicago, Illinois 60606

                             CHAPMAN AND CUTLER
                             Attn:  Daniel C. Bird, Jr.
                             111 West Monroe Street
                             Chicago, Illinois  60603

It is proposed that this filing will become effective (check appropriate box)

- -----
- -----    immediately upon filing pursuant to paragraph (b)

- -----
- -----    on (date) pursuant to paragraph (b)

- -----
- -----    60 days after filing pursuant to paragraph (a)

- -----
- -----    on (date) pursuant to paragraph (a) of rule 485 or 486

E.  Title and amount of securities being registered:  An indefinite number of
    Units as permitted by Rule 24f-2.

F.  Proposed maximum offering price to the public of the securities being
    registered:  Not presently determinable.

G.  Amount of filing fee:  $500 in accordance with Rule 24f-2.

H.  Approximate date of proposed sale to the public:

    As soon as practicable after the effective date of the Registration
    Statement.
______
          Check box if it is proposed that this filing will become effective
          on (date) at (time) pursuant to Rule 487.
______

The registant hereby amends this Registration Statement on such date or dates
as may be necessary to delay its effective date until the registrant 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>
 
   
                                 APRIL 8, 1994
                             SUBJECT TO COMPLETION
NUVEEN  Tax-Exempt Unit Trusts
             PROSPECTUS
            Series 723
             April 8, 1994
    
INTEREST  INCOME TO  THE TRUST  AND TO UNITHOLDERS,  IN THE  OPINION OF COUNSEL,
UNDER EXISTING LAW IS EXEMPT FROM FEDERAL INCOME TAX. CAPITAL GAINS, IF ANY, ARE
SUBJECT TO TAX. INTEREST INCOME OF THE  TRUST MAY BE SUBJECT TO STATE AND  LOCAL
TAXES.
 
CURRENTLY  OFFERED AT PUBLIC OFFERING PRICE PLUS INTEREST ACCRUED TO THE DATE OF
SETTLEMENT. MINIMUM PURCHASE--EITHER $5,000 OR 50 UNITS, WHICHEVER IS LESS.
 
   
THE NUVEEN TAX-EXEMPT UNIT TRUST, SERIES 723 consists of one underlying separate
unit investment  trust  designated as  National  Insured Trust  267.  The  Trust
initially  consists  of delivery  statements relating  to contracts  to purchase
Bonds and, thereafter, will  consist of a  diversified portfolio of  obligations
issued  by  or on  behalf of  states and  territories of  the United  States and
authorities and political  subdivisions thereof (see  SCHEDULE OF  INVESTMENTS),
the  interest on which is, in the opinion of bond counsel to the issuers, exempt
from Federal income  tax under  existing law.  All obligations  in the  National
Insured  Trust  267  are covered  by  policies  of insurance  obtained  from the
Municipal Bond Investors Assurance Corporation guaranteeing payment of principal
and interest when due. All such  policies of insurance remain effective so  long
as  the obligations are outstanding. As a result of such insurance, the Bonds in
the portfolio of the National Insured Trust 267 have received a rating of  "Aaa"
by  Moody's Investors Service, Inc. and the  Bonds in the National Insured Trust
267 and the Units  of the Trust have  received a rating of  "AAA" by Standard  &
Poor's  Corporation. INSURANCE RELATES ONLY TO THE BONDS IN THE NATIONAL INSURED
TRUST 267 AND NOT  TO THE UNITS  OFFERED HEREBY OR TO  THEIR MARKET VALUE.  (See
Section 5.)
    
 
THE  OBJECTIVES of the  Trust are tax-exempt income  and conservation of capital
through a diversified  investment in tax-exempt  Bonds. (SEE SECTIONS  2, 3  AND
11.)  The payment of interest and the  preservation of principal are, of course,
dependent upon the continuing ability of the issuers of Bonds and of any insurer
thereof to meet  their obligations thereunder.  There is no  guarantee that  the
Trust's objectives will be achieved.
 
DISTRIBUTIONS  of  interest received  by the  Trust  will be  made semi-annually
unless the Unitholder elects to receive them monthly or quarterly. (SEE  SECTION
13.)  Distribution of funds in the Principal Account, if any, will ordinarily be
made semi-annually.
FOR ESTIMATED LONG TERM RETURNS AND ESTIMATED CURRENT RETURNS to Unitholders  in
the  Trust on the  business day prior  to the Date  of Deposit. (SEE  PAGE 3 AND
SECTION 9.)
 
   
THE PUBLIC OFFERING  PRICE per  Unit of the  Trust during  the initial  offering
period  is equal to a pro rata share of  the OFFERING prices of the Bonds in the
Trust's portfolio plus  a sales charge  of up  to 4.90% of  the Public  Offering
Price  (equivalent to 5.152%  of the net  amount invested). The  sales charge is
somewhat lower if the Trust has a lesser average maturity. (SEE SECTION 6.)  The
Secondary Market Public Offering Price per Unit for the Trust will be equal to a
pro rata share of the sum of BID prices of the Bonds in the Trust plus the sales
charges  determined based on  the number of  years remaining to  the maturity of
each Bond.  Accrued  interest  from  the  preceding  Record  Date  to,  but  not
including,  the settlement date (normally five  business days after purchase) is
added to the Public Offering Price. The  sales charge is reduced on a  graduated
scale  for sales involving at least $50,000 or  500 Units and will be applied on
whichever basis is more favorable to the purchaser. (SEE SECTION 6.)
    
 
A UNITHOLDER MAY REDEEM UNITS at the office of the Trustee, United States  Trust
Company of New York, at prices based upon the BID prices of the Bonds. The price
received  upon  redemption  may  be  more  or  less  than  the  amount  paid  by
Unitholders, depending upon the  value of the  Bonds on the  date of tender  for
redemption.  (SEE  SECTION 19.)  The Sponsor,  although not  required to  do so,
intends to make a secondary  market for the Units of  the Trust at prices  based
upon  the BID  prices of the  Bonds in the  Trust. (SEE SECTION  7.) RETAIN THIS
PROSPECTUS FOR FUTURE REFERENCE.
 
                 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.
<PAGE>
  NUVEEN  Tax-Exempt Unit Trusts
 
<TABLE>
<CAPTION>
      Index                                             Section         Page
<C>   <S>                                              <C>        <C>
      SPECIFIC TRUST MATTERS
      National Insured Trust 267                              3         8-11
      GENERAL MATTERS
      Accrued Interest                                        8         A-15
      Accumulation Plan                                      14         A-22
      Bonds, How Selected                                     3            6
      Bonds, Initial Determination of Offering Price         10         A-17
      Bonds, Limited Right of Substitution                    4          A-6
      Bond Ratings                                            3         8-11
      Bonds, Removal from Trust                              21         A-31
      Call Provisions of Portfolio Bonds                   3, 4         8-11
      Capital Gains Taxability                               11         A-17
      Dealer Discount                                        17         A-27
      Description of Units of Trust                           1            5
      Distributions to Unitholders                           13         A-21
      Distribution Payment Dates                          3, 13   8-11, A-21
      Distribution of Units to the Public                    17         A-27
      Essential Information Regarding the Trust              --            5
      Estimated Long Term Return and Estimated Current
      Return                                                  9      3, A-16
      Evaluation                                             16         A-26
      Expenses to Fund                                       12         A-20
      Insurance on Bonds in the Insured Trust                 5          A-9
      Interest Income to Trust                                3         8-11
      Investments, Schedule of                                3         8-11
      Legality of Units                                      24         A-35
      Limitations on Liabilities of Sponsor and Trustee       22        A-32
      Market for Units                                        7         A-14
      Minimum Transaction                                    17         A-28
      Objectives of the Trust                                 2            6
      Optional Distribution Plan                             13         A-21
      Other Information                                      24         A-34
      Ownership and Transfer of Units                        18         A-28
      Public Offering Price of Units                          6         A-12
      Quantity Purchases                                      6         A-13
      Record Dates                                           13         A-21
      Ratings, Description of                                --         A-36
      Redemption of Units by Trustee                         19         A-29
      Reports to Unitholders                                 15         A-26
      Repurchase of Units by Sponsor                         20         A-31
      Sales Charge                                            6         A-12
      Sponsor, Information About                             23         A-33
      State Tax Status                                        3         8-11
      Successor Trustees and Sponsors                        22         A-33
      Tax Status of Unitholders                              11         A-17
      Trustee, Information About                             22         A-32
      Trust Indenture, Amendment and Termination             24         A-34
      Unit Value                                             16         A-26
</TABLE>
 
                  2
<PAGE>
                           ESTIMATED LONG TERM RETURN
                                      AND
                     ESTIMATED CURRENT RETURN FOR THE TRUST
 
Following  are the  Estimated Long  Term and  Estimated Current  Returns for the
Trust on the  business day  prior to  the Date  of Deposit,  under the  monthly,
quarterly and semi-annual plans of distribution (SEE SECTION 3):
 
                          Estimated Long Term Returns
<TABLE>
<CAPTION>
                                                PLAN OF DISTRIBUTION
                                      ----------------------------------------
  <S>                                 <C>          <C>            <C>
                    TRUST             MONTHLY      QUARTERLY      SEMI-ANNUAL
 
<CAPTION>
  ----------------------------------------------------------------------------
  <S>                                 <C>          <C>            <C>
  National Insured Trust 267.....      5.92%         5.94%           5.96%
</TABLE>
 
                           Estimated Current Returns
<TABLE>
<CAPTION>
                                                PLAN OF DISTRIBUTION
                                      ----------------------------------------
  <S>                                 <C>          <C>            <C>
                    TRUST             MONTHLY      QUARTERLY      SEMI-ANNUAL
 
<CAPTION>
  ----------------------------------------------------------------------------
  <S>                                 <C>          <C>            <C>
  National Insured Trust 267.....      5.89%         5.92%           5.94%
</TABLE>
 
    The  Estimated Long Term Return for the Trust  is a measure of the return to
the investor earned  over the estimated  life of the  Trust. The Estimated  Long
Term  Return represents an  average of the  yields to maturity  (or call) of the
Bonds in  the Trust's  portfolio  calculated in  accordance with  accepted  bond
practice and adjusted to reflect expenses and sales charges. Under accepted bond
practice,  tax-exempt bonds  are customarily  offered to  investors on  a "yield
price" basis, which involves computation of  yield to maturity or to an  earlier
call date (whichever produces the lower yield), and which takes into account not
only the interest payable on the bonds but also the amortization or accretion to
a  specified date of any premium over  or discount from the par (maturity) value
in the bond's  purchase price. In  calculating Estimated Long  Term Return,  the
average  yield for  the Trust's  portfolio is  derived by  weighting each Bond's
yield by the market value of the Bond and by the amount of time remaining to the
date to which the Bond is priced. Once the average portfolio yield is  computed,
this  figure is then reduced to reflect estimated expenses and the effect of the
maximum sales  charge paid  by investors.  The Estimated  Long Term  Return  and
Estimated  Current Return  calculations do not  take into account  the delays in
payments to Unitholders  for the first  few months of  Trust operations, and  it
also  does not  take into account  the difference  in the timing  of payments to
Unitholders who choose quarterly or  semi-annual plans of distribution, each  of
which will reduce the return.
 
    Estimated  Current Return  is computed by  dividing the  Net Annual Interest
Income per Unit by the Public Offering Price. In contrast to Estimated Long Term
Return, Estimated Current Return does not reflect the amortization of premium or
accretion of discount, if any, on the Bonds in the Trust's portfolio. Net Annual
Interest Income per Unit is calculated by dividing the annual interest income to
the Trust, less estimated expenses, by the number of Units outstanding.
 
    Net Annual Interest  Income per  Unit, used to  calculate Estimated  Current
Return,  will vary  with changes  in fees  and expenses  of the  Trustee and the
Evaluator and with the redemption, maturity, exchange or sale of Bonds. A  Trust
may  experience expenses and  portfolio changes different  from those assumed in
the calculation of Estimated  Long Term Return. There  thus can be no  assurance
that  the Estimated  Current Returns or  the Estimated Long  Term Returns quoted
herein will be realized in the future. Both the Estimated Current Return and the
Estimated Long Term Return quoted  herein are based on  the market value of  the
underlying  Bonds on the business  day prior to the  Date of Deposit; subsequent
calculations of these performance measures will reflect the then current  market
value  of the underlying Bonds and may be higher or lower. For more information,
see Section 9. The Sponsor will provide estimated cash flow information relating
to a Trust without  charge to each  potential investor in  a Trust who  receives
this  prospectus and makes  an oral or  written request to  the Sponsor for such
information.
 
                                       3
<PAGE>
   
                  ESSENTIAL INFORMATION REGARDING THE TRUST ON
                                 APRIL 7, 1994+
    
           Sponsor and Evaluator...... John Nuveen & Co. Incorporated
           Trustee........... United States Trust Company of New York
                  -------------------------------------------
 
The income, expense and distribution data  set forth below have been  calculated
for   Unitholders   receiving   MONTHLY   distributions.   Unitholders  choosing
distributions quarterly or  semi-annually will receive  slightly higher  current
returns  because of the lower Trustee's fees and expenses under such plans. (SEE
SECTION 3 FOR DATA RELATING TO THESE PLANS.)
 
<TABLE>
<CAPTION>
                                                         National
                                                          Insured
                                                         Trust 267
                                                      ---------------
Principal Amount of Bonds in Trust..................  $    10,000,000
<S>                                                   <C>
Number of Units.....................................          100,000
Fractional Undivided Interest in Trust Per Unit.....        1/100,000
Public Offering Price--Less than 500 Units
    Aggregate Offering Price of Bonds in Trust......  $     9,675,605
    Divided by Number of Units......................  $         96.76
    Plus Sales Charge*..............................  $          4.98
    Public Offering Price Per Unit(1)...............  $        101.74
Redemption Price Per Unit (exclusive of accrued
  interest).........................................  $         96.23
Sponsor's Initial Repurchase Price Per Unit
  (exclusive of accrued interest)...................  $         96.76
Excess of Public Offering Price Per Unit over
  Redemption Price Per Unit.........................  $          5.51
Excess of Public Offering Price Per Unit over
  Sponsor's Repurchase Price Per Unit...............  $          4.98
Calculation of Estimated Net Annual Interest Income
  Per Unit
    Annual Interest Income(2).......................  $        6.1975
    Less Estimated Annual Expense...................  $         .2077
                                                      ---------------
    Estimated Net Annual Interest Income(3).........  $        5.9898
Daily Rate of Accrual Per Unit......................  $        .01664
Estimated Current Return(4).........................            5.89%
Estimated Long Term Return(4).......................            5.92%
<FN>
- ----------
Evaluations for purpose of sale,  purchase or redemption of  Units are made as of  4 p.m. Eastern time  on the business day  next
following receipt of an order by the Sponsor or Trustee. (See Section 6.)
 + The business day prior to the Date of Deposit.
 *  National and State, 5.152%; Long  Intermediate, 4.439%; Intermediate, 4.058%; Short  Intermediate, 3.093%; Short Term, 2.564%
   (4.9%, 4.25%, 3.9%, 3.0% and 2.5% of the Public Offering Prices, respectively.)
(1) Units are offered at the Public  Offering Price plus accrued interest from the  preceding Record Date to, but not  including,
    the  date of settlement (normally five business days after purchase). The  Date of Deposit of the Fund has been designated as
    the First Record  Date for  all plans of  distribution of  the Trust and,  accordingly, for  Units purchased on  the Date  of
    Deposit,  the following  amount of  accrued interest  to the Settlement  Date will  be added  to the  Public Offering Prices:
    National Insured Trust--$.12. (See Section 7.)
(2) Assumes delivery of  all Bonds. (See Section  4.) Interest income does  not include accretion of  original issue discount  on
    "zero coupon" Bonds, Stripped Obligations or other original issue discount Bonds. (See "General Trust Information" in Section
    3.)
(3)  The amount and timing of interest distributions from the Trust  under the various plans of distribution are shown in Section
    3.
(4) Estimated Long Term  Return for the Trust  represents the average  of the yields to  maturity (or call) of  the Bonds in  the
    Trust's  portfolio calculated in accordance with accepted bond practices  and adjusted to reflect expenses and sales charges.
    Estimated Current Return is computed by dividing the Net Annual Interest Income per Unit by the Public Offering Price, and in
    contrast to Estimated Long Term  Return does not reflect the  amortization of premium or accretion  of discount, if any.  For
    more information see page 3 and Section 9.
</TABLE>
 
                                       4
<PAGE>
                   ESSENTIAL INFORMATION REGARDING THE TRUST
                                  (CONTINUED)
<TABLE>
<S>                     <C>                     <C>                     <C>
Record Dates....................................................................See Section 13
Distribution Dates..............................................................See Section 13
Minimum Principal Distribution..................................................$0.10 Per Unit
Date Trust Established...........................................................April 8, 1994
Settlement Date.................................................................April 15, 1994
Mandatory Termination Date......................................................See Section 24
Minimum Value of Each Trust.....................................................See Section 24
Sponsor's Annual Evaluation Fee.....................$0.17 per $1,000 principal amount of Bonds
Trustee's Annual Fees:
 
<CAPTION>
                                                 PLAN OF DISTRIBUTION
                        ----------------------------------------------------------------------
                 TRUST         MONTHLY                QUARTERLY              SEMI-ANNUAL
- ----------------------       -----------        ----------------------  ----------------------
<S>                     <C>                     <C>                     <C>
  National Insured Trust 267...............     $1.6321      $  1.3121      $   1.1221
  ------------
  *  Each Trustee annual fee is per $1,000 principal amount of the underlying Bonds in a
    Trust  for  that  portion  of  the  Trust  that  represents  a  particular  plan  of
    distribution.
</TABLE>
 
                          ---------------------------
 
THE NUVEEN TAX-EXEMPT UNIT TRUST
   
SERIES 723
    
 
   
1.  WHAT IS THE NUVEEN TAX-EXEMPT UNIT TRUST, SERIES 723?
    
 
   
Series  723 of the Nuveen  Tax-Exempt Unit Trust is one  of a series of separate
but similar  investment companies  created  by the  Sponsor,  each of  which  is
designated  by a different Series number. This Series consists of one underlying
separate unit  investment  trust,  under  one  trust  indenture  and  agreement,
designated National Insured Trust 267. A Trust in which few or none of the Bonds
are  insured is sometimes referred to as a "Traditional Trust", while a trust in
which all of the Bonds are insured as described herein is sometimes referred  to
as  an "Insured Trust." This  Series was created under the  laws of the State of
New York pursuant to a  Trust Indenture and Agreement  dated April 8, 1994  (the
"Indenture")  between John Nuveen & Co.  Incorporated (the "Sponsor") and United
States Trust Company of New York (the "Trustee").
    
 
   
    The Sponsor has deposited with  the Trustee delivery statements relating  to
contracts  for the  purchase of municipal  debt obligations  together with funds
represented by an irrevocable letter of credit issued by a major commercial bank
in the amount, including accrued interest,  required for their purchase (or  the
obligations  themselves) in the  principal amount of  $10,000,000 (the "Bonds"),
which initially constitute  the underlying  securities of the  Trust. Bonds  may
include  fixed rate obligations with regularly scheduled interest payments, zero
coupon bonds and  stripped obligations, which  represent evidences of  ownership
interests with respect to either a principal payment or a payment of interest on
a    tax-exempt   obligation   ("Stripped   Obligations").   See   "Summary   of
Portfolios--General Trust Information" for a discussion of zero coupon bonds and
Stripped Obligations.  The following  principal amounts  were deposited  in  the
Trust:    $10,000,000    in    the    National    Insured    Trust.    Some   of
    
 
                                       5
<PAGE>
the delivery  statements may  relate  to contracts  for  the purchase  of  "when
issued"  or other Bonds with  delivery dates after the  date of settlement for a
purchase made on  the Date  of Deposit. See  the "Schedule  of Investments"  and
Section  4. For  a discussion  of the  Sponsor's obligations  in the  event of a
failure of any contract  for the purchase  of any of the  Bonds and its  limited
right to substitute other bonds to replace any failed contract, see Section 4.
 
    Payment  of interest on the Bonds in  the Insured Trust, and of principal at
maturity, is guaranteed under policies of  insurance obtained by the Sponsor  or
by the issuers of the Bonds. (See Section 5.)
 
   
    The  Trustee has delivered to the Sponsor registered Units for 100,000 Units
of the National Insured Trust, which  represent ownership of the entire  Series,
and  which  are offered  for sale  by this  Prospectus. Each  Unit of  the Trust
represents a fractional undivided  interest in the principal  and net income  of
the  Trust in  the ratio of  10 Units for  each $1,000 principal  value of Bonds
initially deposited in the Trust.
    
 
2.  WHAT ARE THE OBJECTIVES OF THE TRUST?
 
The objectives  of the  Trust are  income  exempt from  Federal income  tax  and
conservation  of capital, through  an investment in obligations  issued by or on
behalf of  states and  territories  of the  United  States and  authorities  and
political  subdivisions thereof,  the interest  on which  is, in  the opinion of
recognized bond counsel  to the  issuing governmental  authorities, exempt  from
Federal  income  tax  under  existing  law.  Insurance  guaranteeing  the timely
payment, when due, of  all principal and  interest on the  Bonds in the  Insured
Trust  has been  obtained by the  Sponsor or by  the issuers of  such Bonds from
Municipal Bond  Investors  Assurance  Corporation,  and  as  a  result  of  such
insurance  the  obligations in  the  Insured Trust  are  rated "Aaa"  by Moody's
Investors Service, Inc. and "AAA" by Standard & Poor's Corporation. (SEE SECTION
5)  .  The  portfolios  of  National  and  State  Trusts  consist  of  long-term
(approximately 15 to 40 year maturities) obligations; those of Long Intermediate
Trusts  consist  of  intermediate to  long  term  (approximately 11  to  19 year
maturities) obligations; those  of Intermediate Trusts  consist of  intermediate
term  (approximately  5  to  15 year  maturities)  obligations;  those  of Short
Intermediate Trusts consist of short to intermediate term (approximately 3 to  7
year  maturities) obligations; and  those of Short Term  Trusts consist of short
term (approximately 1 to 5 year maturities) obligations. There is, of course, no
guarantee that the Trust's objectives will be achieved. For a comparison of  net
after-tax  return for various tax brackets see the "Taxable Equivalent Estimated
Current Return Table" included in this Prospectus.
 
    The Trust consists of fixed-rate municipal debt obligations. Because of this
an investment in the  Trust should be  made with an  understanding of the  risks
which an investment in such debt obligations may entail, including the risk that
the  value of the debt obligations and  therefore of the Units will decline with
increases in  interest  rates. In  general,  the  longer the  period  until  the
maturity  of a  Bond, the more  sensitive its  value will be  to fluctuations in
interest rates. During the past decade, there have been substantial fluctuations
in interest  rates, and,  accordingly, in  the value  of debt  obligations.  The
Sponsor cannot predict whether such fluctuations will recur.
 
3.  SUMMARY OF PORTFOLIOS
 
In  selecting Bonds  for the  Trust, the  following factors,  among others, were
considered: (i) the  Standard & Poor's  Corporation rating of  the Bonds or  the
Moody's  Investors  Service, Inc.  rating  of the  Bonds  (see Section  2  for a
description of minimum rating standards), (ii) the
 
                                       6
<PAGE>
prices of the Bonds relative to other bonds of comparable quality and  maturity,
(iii)  the  diversification of  Bonds as  to  purpose of  issue and  location of
issuer, (iv)  the maturity  dates of  the  Bonds, and  (v) the  availability  of
Municipal Bond Investors Assurance Corporation insurance on such Bonds.
 
    In  order for Bonds in  the Insured Trust to  be eligible for Municipal Bond
Investors Assurance Corporation insurance, they must have credit characteristics
which, in the opinion of the  insurer, would qualify them as "investment  grade"
obligations.  Insurance is not a  substitute for the basic  credit of an issuer,
but supplements the existing credit  and provides additional security  therefor.
(SEE SECTION 5.)
 
    Certain  bonds may carry a "mandatory put" (also referred to as a "mandatory
tender" or "mandatory repurchase") feature pursuant to which the holder of  such
bonds will receive payment of the full principal amount thereof on a stated date
prior  to the maturity date unless such  holder affirmatively acts to retain the
bond. Under the Indenture,  the Trustee does  not have the  authority to act  to
retain  Bonds with  such features; accordingly,  it will receive  payment of the
full principal amount of any such Bonds on the stated put date and such date  is
therefore  treated as the maturity date of such Bonds in selecting Bonds for the
Trust and for purposes of calculating the  average maturity of the Bonds in  the
Trust.
 
                                       7
<PAGE>
   
NATIONAL INSURED TRUST 267
    
   
    The  Portfolio  of  National  Insured  Trust 267  consists  of  9  long term
(approximately 15 to 40 year maturities) obligations issued by entities  located
in  7 states and one  obligation issued by an entity  located in the District of
Columbia. Two Bonds  in the Trust  are general obligations  of the  governmental
entities  issuing them and are backed by  the taxing powers thereof. Eight Bonds
in the Trust  are payable  as to  principal and interest  from the  income of  a
specific  project or authority  and are not  supported by the  issuer's power to
levy taxes.  The sources  of payment  for these  Bonds are  divided as  follows:
Dedicated-Tax  Supported Revenue, 1;  Electrical System Revenue,  3; Health Care
Facility Revenue, 3;  Water and/or Sewer  Revenue, 1.  All of the  Bonds in  the
Trust,  as insured, are  rated AAA by  Standard & Poor's  Corporation and Aaa by
Moody's Investors Service, Inc. Twenty percent of the principal amount of  Bonds
in the Trust consists of issues of entities located in the State of Illinois and
20% of the principal amount of Bonds in the Trust consists of issues of entities
located  in the  State of Washington;  such concentration may  involve more risk
than if such Bonds were issued by issuers located in several states.
    
 
   
    At the Date of Deposit,  the average maturity of  the Bonds in the  National
Insured  Trust is 28.4  years. The average maturity  of the Bonds  in a Trust is
calculated based upon the stated maturities of the Bonds in such Trust (or, with
respect to Bonds for  which funds or  securities have been  placed in escrow  to
redeem such Bonds on a stated call date, based upon such call date). The average
maturity  of the Bonds in a Trust may  increase or decrease from time to time as
Bonds mature or are called or sold.
    
 
    Approximately 30% of  the aggregate  principal amount  of the  Bonds in  the
Trust  consists of obligations  of issuers whose  revenues are primarily derived
from the sale of electric energy.
 
    Approximately 25% of  the aggregate  principal amount  of the  Bonds in  the
Trust  consists of obligations  of issuers whose  revenues are primarily derived
from services provided by hospitals or other health care facilities.
 
    For a discussion of  the risks associated with  investments in the bonds  of
various issuers, see "General Trust Information" in this section.
 
   
    The  Sponsor entered  into contracts to  acquire the Bonds  between April 6,
1994 and April 7, 1994. The  following summarizes certain information about  the
Bonds as of the business day prior to the Date of Deposit:
    
 
<TABLE>
<CAPTION>
                                                                  Difference between Trustee's
                                                               Determination of Offering Price and
   Cost to    Profit (or loss)   Annual Interest   Bid Price              the Bid Price
   Sponsor       to Sponsor      Income to Trust    of Bonds       (as % of principal amount)
  ----------  -----------------  ----------------  ----------  -----------------------------------
  <S>         <C>                <C>               <C>         <C>
  $9,629,438       $46,167           $619,750      $9,623,105                 .53%
</TABLE>
 
    Neither   cost  to  Sponsor  nor  profit   (or  loss)  to  Sponsor  reflects
underwriting profits or losses received or  incurred by the Sponsor through  its
participation   in  underwriting  syndicates.  An  underwriter  or  underwriting
syndicate purchases bonds  from the issuer  on a negotiated  or competitive  bid
basis  as principal with  the motive of  marketing such bonds  to investors at a
profit. The Sponsor did not participate as  either the sole underwriter or as  a
manager  or member of a syndicate that  acted as the original underwriter of any
of the Bonds.
 
   
    Unitholders may  elect to  have interest  distributions made  on a  monthly,
quarterly or semi-annual basis. The interest on the Bonds initially deposited in
the  National Insured Trust, less estimated  expenses, is estimated to accrue at
the rate of $.01678 per Unit per day under the semi-annual plan of distribution,
$.01673 per Unit per day under the
    
 
                                       8
<PAGE>
   
quarterly plan of distribution  and $.01664 per Unit  per day under the  monthly
plan  of  distribution. It  is anticipated  that  the amount  of interest  to be
distributed per Unit in each year under each plan of distribution will initially
be substantially equal to the Estimated Net Annual Interest Income per Unit  for
that plan.
    
 
    Details  of interest  distributions per Unit  of the  National Insured Trust
under the various plans appear in  the following table based upon estimated  Net
Annual Interest Income at the Date of Deposit:
 
<TABLE>
<CAPTION>
                                                                                                          Normal
                                                                                                      Distributions
National Insured Trust                                   1994                          1995              per Year
<S>                                     <C>            <C>            <C>            <C>            <C>
- ----------------------------------------------------------------------------------------------------  --------------
Record Date*..........................        5/1            8/1           11/1            2/1
Distribution Date.....................       5/15           8/15          11/15           2/15
- --------------------------------------------------------------------------------------------------------------------
Monthly Distribution Plan.............  $   .3826(1)                                                  $  5.9898
                                                          --------  $.4991 every month  --------
Quarterly Distribution Plan...........  $   .3826(1)   $  1.5054(2)   $  1.5054      $  1.5054        $  6.0218
Semi-Annual Distribution Plan.........  $   .3826(1)                  $  3.0203(3)                    $  6.0408
- --------------------------------------------------------------------------------------------------------------------
<FN>
 *  Record Dates for semi-annual distributions are May 1 and November 1; for quarterly distributions, they are February 1, May 1,
   August 1 and November 1. Record Dates for monthly distributions are the first day of each month.
(1) The first distribution will be paid to all  Unitholders, regardless of the distribution plan selected. Such distribution  may
    be more or less than a regular monthly distribution.
(2) Regular 3-month distribution.
(3) Regular 6-month distribution.
</TABLE>
 
   
    The  accrual amounts set forth above, and  in turn the amount of interest to
be distributed annually per Unit, will  generally change as Bonds are  redeemed,
mature or are sold or as fees and expenses increase or decrease.
    
 
TAX STATUS--NATIONAL INSURED TRUST
 
    For  a discussion  of the  tax status of  income earned  on National Insured
Trust Units, see Section 11.
 
NATIONALLY DIVERSIFIED TRUST TAXABLE ESTIMATED CURRENT RETURN TABLE
(NATIONAL TRADITIONAL TRUST)
 
    The following tables show the approximate taxable estimated current  returns
for  individuals  that are  equivalent to  tax-exempt estimated  current returns
under  published  1994  marginal  Federal  tax  rates.  The  tables  incorporate
increased  tax  rates for  higher-income tax  payers that  were included  in the
Revenue Reconciliation Act of 1993. The tables illustrate what you would have to
earn on taxable investments to equal the tax-exempt estimated current return for
your income tax bracket. A taxpayer's marginal tax rate is affected by both  his
taxable  income and his adjusted gross income. Locate your adjusted gross income
and your taxable  income (which  is your adjusted  gross income  reduced by  any
deductions  and  exemptions), then  locate your  tax bracket  based on  joint or
single tax  filing. Read  across  to the  equivalent taxable  estimated  current
return you would need to match the tax-free income.
 
                                       9
<PAGE>
  MARGINAL FEDERAL TAX RATES FOR JOINT TAXPAYERS WITH FOUR PERSONAL EXEMPTIONS
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                  Federal
    Federal      Adjusted
    Taxable        Gross                                   Tax-Exempt Estimated Current Return
    Income        Income        Federal       --------------------------------------------------------------
   (1,000's)     (1,000's)     Tax Rate1      5.00%   5.25%   5.50%   5.75%   6.00%   6.25%   6.50%   6.75%
 ------------- -------------  -----------     ------  ------  ------  ------  ------  ------  ------  ------
 <S>           <C>            <C>             <C>     <C>     <C>     <C>     <C>     <C>     <C>     <C>
 $     0- 38.0 $     0-111.8      15.0   %     5.88    6.18    6.47    6.76    7.06    7.35    7.65    7.94
    38.0- 91.9       0-111.8      28.0         6.94    7.29    7.64    7.99    8.33    8.68    9.03    9.38
                 111.8-167.7      29.0         7.04    7.39    7.75    8.10    8.45    8.80    9.15    9.51
    91.9-140.0       0-111.8      31.0         7.25    7.61    7.97    8.33    8.70    9.06    9.42    9.78
                 111.8-167.7      32.0         7.35    7.72    8.09    8.46    8.82    9.19    9.56    9.93
                 167.7-290.2      34.5         7.63    8.02    8.40    8.78    9.16    9.54    9.92   10.31
   140.0-250.0   111.8-167.7      37.0         7.94    8.33    8.73    9.13    9.52    9.92   10.32   10.71
                 167.7-290.2      40.0         8.33    8.75    9.17    9.58   10.00   10.42   10.83   11.25
                  Over 290.2      37.0   2     7.94    8.33    8.73    9.13    9.52    9.92   10.32   10.71
    Over 250.0   167.7-290.2      44.0         8.93    9.38    9.82   10.27   10.71   11.16   11.61   12.05
                  Over 290.2      41.0   3     8.47    8.90    9.32    9.75   10.17   10.59   11.02   11.44
</TABLE>
 
  MARGINAL FEDERAL TAX RATES FOR SINGLE TAXPAYERS WITH ONE PERSONAL EXEMPTION
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                  Federal
    Federal      Adjusted
    Taxable        Gross                                   Tax-Exempt Estimated Current Return
    Income        Income        Federal       --------------------------------------------------------------
   (1,000's)     (1,000's)     Tax Rate1      5.00%   5.25%   5.50%   5.75%   6.00%   6.25%   6.50%   6.75%
 ------------- -------------  -----------     ------  ------  ------  ------  ------  ------  ------  ------
 <S>           <C>            <C>             <C>     <C>     <C>     <C>     <C>     <C>     <C>     <C>
 $     0- 22.8 $     0-111.8      15.0   %     5.88    6.18    6.47    6.76    7.06    7.35    7.65    7.94
    22.8- 55.1       0-111.8      28.0         6.94    7.29    7.64    7.99    8.33    8.68    9.03    9.38
    55.1-115.0       0-111.8      31.0         7.25    7.61    7.97    8.33    8.70    9.06    9.42    9.78
                 111.8-234.3      32.5         7.41    7.78    8.15    8.52    8.89    9.26    9.63   10.00
   115.0-250.0   111.8-234.3      38.0         8.06    8.47    8.87    9.27    9.68   10.08   10.48   10.89
                  Over 234.3      37.0   2     7.94    8.33    8.73    9.13    9.52    9.92   10.32   10.71
    Over 250.0    Over 234.3      41.0   3     8.47    8.90    9.32    9.75   10.17   10.59   11.02   11.44
<FN>
- ------------------
      1  The table reflects the effect of the limitations on  itemized deductions and the deduction for personal exemptions. They
were designed to phase out certain benefits of these deductions for higher income taxpayers. These limitations, in effect,  raise
the  current maximum marginal Federal tax rate to approximately 44.0  percent for taxpayers filing a joint return and entitled to
four personal exemptions and to  approximately 41.0 percent for  taxpayers filing a single return  entitled to only one  personal
exemption.  These limitations are  subject to certain maximums,  which depend on  the number of exemptions  claimed and the total
amount of the taxpayer's itemized  deductions. For example, the  limitation on itemized deductions will  not cause a taxpayer  to
lose more than 80% of his allowable itemized deductions, with certain exceptions.
      2 Federal tax rate reverts to 36.0% after the 80% cap on the limitation on itemized deductions has been met.
      3 Federal tax rate reverts to 39.6% after the 80% cap on the limitation on itemized deductions has been met.
</TABLE>
 
    A  comparison of tax-free  and equivalent taxable  estimated current returns
with the returns on  various taxable investments is  one element to consider  in
making  an  investment  decision. The  Sponsor  may  from time  to  time  in its
advertising and sales materials  compare the then  current estimated returns  on
the Trust and returns over specified periods on other similar Nuveen Trusts with
returns  on taxable investments such as corporate or U.S. Government bonds, bank
CD's and  money  market  accounts or  money  market  funds, each  of  which  has
investment  characteristics  that  may  differ from  those  of  the  Trust. U.S.
Government bonds, for example, are  backed by the full  faith and credit of  the
U.S. Government and bank CD's and money market accounts are insured by an agency
of  the federal government. Money market accounts and money market funds provide
stability of principal, but pay interest  at rates that vary with the  condition
of  the short-term debt market. The  investment characteristics of the Trust are
described more fully elsewhere in this Prospectus.
 
                                       10
<PAGE>
   
Nuveen Tax-Exempt Unit Trust
Schedule of Investments at Date of Deposit
April 8, 1994
NATIONAL INSURED TRUST 267
(Series 723)
    
 
<TABLE>
<CAPTION>
                                                                                          Ratings(3)           Trustee's
                                                                      Optional       ---------------------   Determination
 Aggregate        Name of Issuer and Title of Issue Represented      Redemption       Standard                of Offering
  Principal        by Sponsor's Contracts to Purchase Bonds(1)      Provisions(2)     & Poor's    Moody's      Price(4)
<C>          <C> <S>                                              <C>                <C>         <C>        <C>
- ---------------------------------------------------------------------------------------------------------------------------
$ 1,000,000      Department of Water and Power of the City of        2003 at 102        AAA         Aaa     $       926,170
                   Los Angeles, California, Electric Plant
                   Refunding Revenue Bonds, Issue of 1993,
                   5.875% Due 9/1/30.
  1,000,000      District of Columbia (Washington, D.C.),            2003 at 102        AAA         Aaa             956,100
                   General Obligation Bonds, Series 1993 E,
                   6.00% Due 6/1/13.
    500,000      Illinois Health Facilities Authority, Revenue       2003 at 102        AAA         Aaa             433,225
                   Bonds, Series 1993 (Rush-Presbyterian-St.
                   Luke's Medical Center Obligated Group), 5.50%
                   Due 11/15/25.
  1,500,000      Metropolitan Pier and Exposition Authority          2003 at 102        AAA         Aaa           1,500,000
                   (Illinois), McCormick Place Expansion Project
                   Bonds, Series 1992A, 6.50% Due 6/15/27.
  1,000,000      County of Boone, Kentucky, Collateralized           2002 at 102        AAA         Aaa           1,007,520
                   Pollution Control Revenue Refunding Bonds,
                   1992 Series A (The Dayton Power and Light
                   Company Project), 6.50% Due 11/15/22.
  1,000,000      Louisiana Public Facilities Authority, Revenue      2002 at 102        AAA         Aaa           1,002,500
                   Bonds, Series 1992-B (Alton Ochsner Medical
                   Foundation Project), 6.50% Due 5/15/22.
  1,000,000      Massachusetts Health and Educational Facilities     2004 at 102        AAA         Aaa             863,580
                   Authority, Revenue Bonds, New England Medical
                   Center Hospitals Issue, Series G-1, 5.375%
                   Due 7/1/24.
  1,000,000      Piedmont Municipal Power Agency (South              2003 at 102        AAA         Aaa             983,260
                   Carolina), Electric Revenue Bonds, 1992
                   Refunding Series, 6.30% Due 1/1/14.
  1,000,000      Northshore School District No. 417, King and        2002 at 100        AAA         Aaa           1,024,650
                   Snohomish Counties, Washington, Unlimited Tax
                   General Obligation Bonds, 1992 Series A,
                   6.625% Due 12/1/11.
  1,000,000      Municipality of Metropolitan Seattle (Seattle,      2003 at 102        AAA         Aaa             978,600
                   Washington), Sewer Revenue Bonds, Series W,
                   6.30% Due 1/1/33.
- -----------                                                                                                 ---------------
$10,000,000                                                                                                 $     9,675,605
- -----------                                                                                                 ---------------
- -----------                                                                                                 ---------------
</TABLE>
 
See Notes to Schedules of Investments, page 12.
 
                                       11
<PAGE>
NOTES TO SCHEDULE OF INVESTMENTS
 
    (1) Contracts,  which  are  "when-issued"  or  "regular  way"  contracts  or
        contracts having delivery dates beyond the normal settlement date,  have
        been  deposited with the Trustee on the Date of Deposit. The performance
        of such contracts is secured by an irrevocable letter of credit,  issued
        by  a major commercial bank, which  has been deposited with the Trustee.
        At the Date  of Deposit, Bonds  may have been  delivered to the  Sponsor
        pursuant  to certain of these contracts; the Sponsor has assigned to the
        Trustee all of its right, title and interest in and to such Bonds.
 
    (2) The Bonds are first subject to optional redemption in the years, and  at
        the  prices, shown.  Unless otherwise  indicated, the  Bonds, except for
        Bonds issued at a substantial original issue discount, are redeemable at
        declining prices (but not below par value) in subsequent years. Original
        issue  discount  bonds,  including  zero  coupon  bonds,  are  generally
        redeemable  at  prices  based on  the  issue  price plus  the  amount of
        original issue discount accreted to redemption plus, if applicable, some
        premium, the amount of which will decline in subsequent years. The Bonds
        may also be subject to sinking fund redemption without premium prior  to
        the dates shown.
 
        Certain  Bonds may be subject to redemption without premium prior to the
        date shown  pursuant  to  special  or  mandatory  call  provisions;  for
        example,  if bond proceeds are not able  to be used as contemplated, the
        project is condemned or sold, or the project is destroyed and  insurance
        proceeds  are used to  redeem the bonds.  Single family mortgage revenue
        bonds and housing authority bonds are  most likely to be called  subject
        to  such provisions, but other bonds may have similar call features. See
        Section 4 and "General Trust Information" in this Section.
 
        The Trustee's determination of the offering prices of Bonds in the  Fund
        may  be  greater or  less than  the  amounts that  may be  received upon
        redemption or  maturity  of  such Bonds.  Subject  to  rules  concerning
        amortization  of bond  premium and of  original issue  discount, gain or
        loss realized  by  the Trustee  on  disposition  of any  Bonds  will  be
        recognized  as taxable capital gain or loss by Unitholders. (See Section
        11.)
 
    (3) See "Description of Ratings" herein. All the Bonds in the Insured Trust,
        as  insured  by  the  Insurer,  are  rated  AAA  by  Standard  &  Poor's
        Corporation and Aaa by Moody's Investors Service, Inc. (See Section 5.)
 
    (4) As  determined by Kenny S&P Evaluation Services on behalf of the Trustee
        as of the close of  business on the business  day preceding the Date  of
        Deposit.  The prices as determined by Kenny S&P Evaluation Services have
        been rounded to the nearest dollar.
 
                                       12
<PAGE>
                    REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS
 
   
     TO THE  BOARD OF  DIRECTORS  OF JOHN  NUVEEN  & CO.  INCORPORATED  AND
     UNITHOLDERS OF NUVEEN TAX-EXEMPT UNIT TRUST, SERIES 723:
    
 
   
       We  have  audited the  accompanying statement  of condition  and the
     related schedule of investments  at date of  deposit (included in  the
     prospectus  herein)  of  Nuveen  Tax-Exempt  Unit  Trust,  Series  723
     (comprised of National Insured Trust 267), as of April 8, 1994.  These
     financial  statements  are  the  responsibility  of  the  Sponsor. Our
     responsibility is to express an opinion on these financial  statements
     based on our audit.
    
 
   
       We  conducted  our  audit  in  accordance  with  generally  accepted
     auditing standards. Those standards require  that we plan and  perform
     the  audit to obtain reasonable  assurance about whether the financial
     statements are  free  of  material  misstatement.  An  audit  includes
     examining,  on  a  test  basis, evidence  supporting  the  amounts and
     disclosures  in  the  financial  statement.  Our  procedures  included
     confirmation  of the irrevocable letter  of credit arrangement for the
     purchase of  securities, described  in Note  (1) to  the statement  of
     condition,  by correspondence with the Trustee. An audit also includes
     assessing the  accounting principles  used and  significant  estimates
     made  by  the Sponsor,  as well  as  evaluating the  overall financial
     statement  presentation.  We  believe   that  our  audit  provides   a
     reasonable basis for our opinion.
    
 
   
       In  our opinion, the statement of condition and the related schedule
     of investments at date of deposit referred to above present fairly, in
     all  material   respects,  the   financial  position   of  the   trust
     constituting  the Nuveen Tax-Exempt Unit Trust, Series 723 as of April
     8, 1994, in conformity with generally accepted accounting principles.
    
 
                                                      ARTHUR ANDERSEN & CO.
 
   
     Chicago, Illinois,
     April 8, 1994.
    
 
                                       13
<PAGE>
                             Statement of Condition
 
   
                    NUVEEN TAX-EXEMPT UNIT TRUST, SERIES 723
    
 
   
                          (National Insured Trust 267)
    
   
                              AS OF APRIL 8, 1994
    
 
<TABLE>
<CAPTION>
                                                       National
                                                       Insured
    TRUST PROPERTY                                    Trust 267
<S>                                                 <C>
                                                    --------------
Sponsor's contracts to purchase Tax-Exempt Bonds,
 backed by an irrevocable letter of
 credit(1)(2).....................................  $    9,675,605
Accrued interest to April 8, 1994 on underlying
  Bonds(1)........................................         200,113
                                                    --------------
            Total.................................  $    9,875,718
                                                    --------------
                                                    --------------
   LIABILITY AND INTEREST OF UNITHOLDERS
Liability:
    Accrued interest to April 8, 1994 on
     underlying Bonds(3)..........................  $      200,113
                                                    --------------
Interest of Unitholders:
    Units of fractional undivided interest
     outstanding (National Insured Trust 267
     --100,000)
      Cost to investors(4)........................  $   10,174,092
        Less: Gross underwriting commission(5)....        (498,487)
                                                    --------------
    Net amount applicable to investors............  $    9,675,605
                                                    --------------
            Total.................................  $    9,875,718
                                                    --------------
                                                    --------------
(1) Represented by  contracts to purchase  Tax-Exempt Bonds  which
    include  "when issued" or "regular  way" or "delayed delivery"
    contracts for which an irrevocable letter of credit issued  by
    a  major commercial bank has  been deposited with the Trustee.
    The amount of  such letter  of credit and  any cash  deposited
    exceeds  the amount  necessary for  the purchase  of the Bonds
    plus accrued interest to the Date  of Deposit. At the Date  of
    Deposit, Bonds may have been delivered to the Sponsor pursuant
    to certain of these contracts; the Sponsor has assigned to the
    Trustee  all of its rights, title  and interest in and to such
    Bonds.
(2) Aggregate value (at offering prices) as of the Date of Deposit
    of the Bonds  listed under "Schedule  of Investments"  herein,
    and  their  aggregate cost  to the  Trust  are the  same. Such
    offering  prices  were   determined  by   Standard  &   Poor's
    Corporation  as of the  close of business  on the business day
    prior to  the Date  of Deposit.  (See Section  10.)  Insurance
    coverage  providing for the  timely payment, when  due, of all
    principal of and interest  on the Bonds  in the Insured  Trust
    has  been obtained  by the Sponsor  or by the  issuers of such
    Bonds. Such insurance does not  guarantee the market value  of
    the  Bonds or  the value  of the Units.  Both the  bid and the
    offering prices of the underlying  Bonds and of the Units  may
    include value attributable to such policies of insurance.
(3)  Representing, as set  forth in Section  8, advancement by the
    Trustee of an amount equal to the accrued Bond interest as  of
    the Date of Deposit from the later of the last payment date on
    the Bonds or the date of issuance thereof.
(4)   Aggregate  Public  Offering   Price  (exclusive  of  accrued
    interest) computed as set forth under Section 6.
(5) The gross underwriting commission  has been calculated on  the
    assumption  that the Units offered by this prospectus are sold
    in single  transactions involving  less  than $50,000  or  500
    Units.  At this level, the sales charge is 4.90% of the Public
    Offering Price in the case of National and State Trusts, 4.25%
    thereof in the case of Long Intermediate Trusts, 3.90% in  the
    case  of  Intermediate  Trusts,  3.00% in  the  case  of Short
    Intermediate Trusts  and  2.50%  in the  case  of  Short  Term
    Trusts.  In single  transactions involving 500  Units or more,
    the sales charge is reduced. (See Section 6.)
</TABLE>
 
                                       14
<PAGE>
GENERAL TRUST INFORMATION
 
   
    An  investment in Units of the Trust should be made with an understanding of
the risks that  such an investment  may entail.  As set forth  in the  portfolio
summary  above, the Trust may  contain or be concentrated in  one or more of the
types of  bonds  discussed  below.  The  following  paragraphs  discuss  certain
circumstances which may adversely affect the ability of issuers of Bonds held in
the  portfolio of the Trust to make payment of principal and interest thereon or
which may  adversely affect  the ratings  of  such Bonds;  with respect  to  the
Insured  Trust, however, because of the insurance  obtained by the Sponsor or by
the issuers of the Bonds, such  changes should not adversely affect the  Insured
Trust's  receipt of principal and interest, the Standard & Poor's AAA or Moody's
Aaa ratings of  the Bonds  in the  Insured Trust  portfolio, or  the Standard  &
Poor's AAA rating of the Units of the Insured Trust.
    
 
   
    HEALTH  FACILITY  OBLIGATIONS.   Some  of  the  Bonds in  the  Trust  may be
obligations of  issuers whose  revenues are  derived from  services provided  by
hospitals  or other health care facilities,  including nursing homes. Ratings of
bonds issued  for health  care  facilities are  sometimes based  on  feasibility
studies  that contain projections of occupancy  levels, revenues and expenses. A
facility's gross  receipts and  net income  available for  debt service  may  be
affected  by future events and conditions  including, among other things, demand
for services, the ability of the  facility to provide the services required,  an
increasing  shortage of qualified nurses or a dramatic rise in nursing salaries,
physicians'  confidence  in  the  facility,  management  capabilities,  economic
developments  in  the service  area, competition  from other  similar providers,
efforts by  insurers  and  governmental agencies  to  limit  rates,  legislation
establishing  state rate-setting agencies,  expenses, government regulation, the
cost and possible unavailability of  malpractice insurance, and the  termination
or  restriction of governmental financial  assistance, including that associated
with Medicare, Medicaid and other  similar third party payor programs.  Medicare
reimbursements are currently calculated on a prospective basis and are not based
on  a provider's actual costs. Such method of reimbursement may adversely affect
reimbursements to hospitals and other facilities for services provided under the
Medicare program and thereby may have an  adverse effect on the ability of  such
institutions  to satisfy  debt service requirements.  In the event  of a default
upon a bond  secured by hospital  facilities, the limited  alternative uses  for
such  facilities may result  in the recovery upon  such collateral not providing
sufficient funds to fully repay the bonds.
    
 
    Certain hospital  bonds  provide for  redemption  at par  upon  the  damage,
destruction  or  condemnation of  the hospital  facilities  or in  other special
circumstances.
 
   
    HOUSING OBLIGATIONS.  Some of the Bonds  in the Trust may be obligations  of
issuers  whose revenues  are primarily  derived from  mortgage loans  to housing
projects for  low  to  moderate  income  families.  Such  issues  are  generally
characterized  by mandatory redemption at par or,  in the case of original issue
discount bonds, accreted  value in  the event of  economic defaults  and in  the
event of a failure of the operator of a project to comply with certain covenants
as  to the operation of the project. The failure of such operator to comply with
certain covenants related  to the tax-exempt  status of interest  on the  Bonds,
such  as provisions requiring that a specified  percentage of units be rented or
available for rental to low or moderate income families, potentially could cause
interest on such Bonds to be subject to Federal income taxation from the date of
issuance of the Bonds. The ability of such issuers to make debt service payments
will  be  affected  by  events  and  conditions  affecting  financed   projects,
including,  among other  things, the  achievement and  maintenance of sufficient
occupancy levels and  adequate rental income,  employment and income  conditions
prevailing  in local labor markets, increases  in taxes, utility costs and other
operating expenses, the managerial ability of project managers, changes in  laws
and
    
 
                                      A-1
<PAGE>
governmental  regulations,  the  appropriation  of  subsidies,  and  social  and
economic trends  affecting the  localities in  which the  projects are  located.
Occupancy of such housing projects may be adversely affected by high rent levels
and income limitations imposed under Federal and state programs.
 
   
    SINGLE FAMILY MORTGAGE REVENUE BONDS.  Some of the Bonds in the Trust may be
single  family  mortgage revenue  bonds,  which are  issued  for the  purpose of
acquiring from originating financial institutions notes secured by mortgages  on
residences located within the issuer's boundaries and owned by persons of low or
moderate  income. Mortgage loans  are generally partially  or completely prepaid
prior to  their final  maturities as  a result  of events  such as  sale of  the
mortgaged  premises, default, condemnation or casualty loss. Because these bonds
are subject to extraordinary mandatory redemption in whole or in part from  such
prepayments of mortgage loans, a substantial portion of such bonds will probably
be  redeemed prior to their scheduled maturities or even prior to their ordinary
call dates. Extraordinary mandatory redemption without premium could also result
from the  failure of  the originating  financial institutions  to make  mortgage
loans in sufficient amounts within a specified time period. The redemption price
of  such issues  may be  more or  less than  the offering  price of  such bonds.
Additionally, unusually high rates of  default on the underlying mortgage  loans
may  reduce revenues available  for the payment  of principal of  or interest on
such mortgage revenue bonds. Single  family mortgage revenue bonds issued  after
December 31, 1980 were issued under Section 103A of the Internal Revenue Code of
1954,  as amended, or  Section 143 of  the Internal Revenue  Code of 1986, which
Sections contain certain  requirements relating to  the use of  the proceeds  of
such  bonds in  order for the  interest on  such bonds to  retain its tax-exempt
status. In each  case, the issuer  of the  bonds has covenanted  to comply  with
applicable  requirements and bond  counsel to such issuer  has issued an opinion
that the interest on the bonds is exempt from Federal income tax under  existing
laws   and  regulations.  There  can  be   no  assurance  that  such  continuing
requirements will  be satisfied;  the failure  to meet  such requirements  could
cause  interest on the Bonds to be  subject to Federal income taxation, possibly
from the date of issuance of the Bonds.
    
 
   
    FEDERALLY ENHANCED  OBLIGATIONS.   Some of  the mortgages  which secure  the
various  health care or housing projects which underlie the previously discussed
Health Facility, Housing,  and Single Family  Mortgage Revenue Obligations  (the
"Obligations") in the Trust may be insured by the Federal Housing Administration
("FHA").  Under FHA  regulations, the  maximum insurable  mortgage amount cannot
exceed 90%  of  the FHA's  estimated  value of  the  project. The  FHA  mortgage
insurance  does not constitute a guarantee of timely payment of the principal of
and interest on the Obligations. Payment  of mortgage insurance benefits may  be
(1)  less than the principal amount of Obligations outstanding or (2) delayed if
disputes arise as to  the amount of  the payment or if  certain notices are  not
given  to the FHA within  the prescribed time periods.  In addition, some of the
previously discussed Obligations may be secured by mortgage-backed  certificates
guaranteed  by the Government  National Mortgage Association  ("GNMA"), a wholly
owned corporate  instrumentality  of  the  United  States,  and/or  the  Federal
National   Mortgage  Association  ("Fannie  Mae")   a  federally  chartered  and
stockholder-owed corporation. GNMA  and Fannie Mae  guarantee timely payment  of
principal  and  interest on  the  mortgage-backed certificates,  even  where the
underlying  mortgage  payments   are  not  made.   While  such   mortgage-backed
certificates  are often pledged  to secure payment of  principal and interest on
the Obligations, timely payment of interest and principal on the Obligations  is
not  insured or guaranteed by  the United States, GNMA,  Fannie Mae or any other
governmental agency or  instrumentality. The  GNMA mortgage-backed  certificates
constitute  a general obligation of  the United States backed  by its full faith
and credit. The obligations of Fannie  Mae, including its obligations under  the
Fannie Mae mortgage-backed securities, are obligations
    
 
                                      A-2
<PAGE>
solely  of Fannie Mae and are not backed  by, or entitled to, the full faith and
credit of the United States.
 
   
    INDUSTRIAL REVENUE OBLIGATIONS.   Certain of the Bonds  in the Trust may  be
industrial  revenue bonds  ("IRBs"), including pollution  control revenue bonds,
which  are  tax-exempt  securities  issued  by  states,  municipalities,  public
authorities  or similar entities to finance  the cost of acquiring, constructing
or improving various industrial projects. These projects are usually operated by
corporate entities. Issuers are obligated only to pay amounts due on the IRBs to
the extent that funds are available from the unexpended proceeds of the IRBs  or
receipts  or revenues of the issuer under  an arrangement between the issuer and
the corporate operator of  a project. The  arrangement may be in  the form of  a
lease, installment sale agreement, conditional sale agreement or loan agreement,
but  in each case  the payments to the  issuer are designed  to be sufficient to
meet the  payments of  amounts due  on the  IRBs. Regardless  of the  structure,
payment  of IRBs is solely dependent  upon the creditworthiness of the corporate
operator of  the  project and,  if  applicable, corporate  guarantor.  Corporate
operators  or  guarantors may  be affected  by  many factors  which may  have an
adverse impact on  the credit  quality of  the particular  company or  industry.
These include cyclicality of revenues and earnings, regulatory and environmental
restrictions,  litigation  resulting  from  accidents  or environmentally-caused
illnesses, extensive competition  and financial deterioration  resulting from  a
corporate  restructuring pursuant to a leveraged buy-out, takeover or otherwise.
Such a restructuring  may result in  the operator of  a project becoming  highly
leveraged  which may have an impact on such operator's creditworthiness which in
turn would have  an adverse impact  on the  rating and/or market  value of  such
Bonds.  Further, the  possibility of  such a  restructuring may  have an adverse
impact on the market for and consequently  the value of such Bonds, even  though
no actual takeover or other action is ever contemplated or effected. The IRBs in
a  Trust may be subject to  special or extraordinary redemption provisions which
may provide for redemption  at par or,  in the case  of original issue  discount
bonds,  accreted value. The  Sponsor cannot predict the  causes or likelihood of
the redemption of IRBs in a Trust prior to the stated maturity of such Bonds.
    
 
   
    ELECTRIC UTILITY  OBLIGATIONS.   Some  of  the Bonds  in  the Trust  may  be
obligations  of issuers  whose revenues are  primarily derived from  the sale of
electric energy. The problems  faced by such issuers  include the difficulty  in
obtaining  approval for timely  and adequate rate  increases from the applicable
public utility  commissions,  the  difficulty of  financing  large  construction
programs,  increased competition, reductions  in estimates of  future demand for
electricity in certain areas of the  country, the limitations on operations  and
increased  costs and  delays attributable  to environmental  considerations, the
difficulty of the capital  market in absorbing utility  debt, the difficulty  in
obtaining  fuel at reasonable prices and  the effect of energy conservation. All
of such issuers  have been  experiencing certain  of these  problems in  varying
degrees.  In addition, Federal, state and municipal governmental authorities may
from time to time review existing, and impose additional, regulations  governing
the  licensing, construction  and operation of  nuclear power  plants, which may
adversely affect the ability of the issuers  of certain of the Bonds in a  Trust
to make payments of principal and/or interest on such Bonds.
    
 
   
    TRANSPORTATION  FACILITY REVENUE BONDS.  Some of  the Bonds in the Trust may
be obligations of issuers which are payable from and secured by revenues derived
from the ownership and operation of airports, public transit systems and  ports.
The  major portion of  an airport's gross operating  income is generally derived
from fees received  from airlines pursuant  to use agreements  which consist  of
annual  payments for airport  use, occupancy of  certain terminal space, service
fees and  leases. Airport  operating income  may therefore  be affected  by  the
ability  of the airlines to meet their obligations under the use agreements. The
air transport industry  is experiencing significant  variations in earnings  and
    
 
                                      A-3
<PAGE>
traffic,  due  to  increased  competition,  excess  capacity,  increased  costs,
deregulation, traffic constraints  and other factors,  and several airlines  are
experiencing  severe financial difficulties. In  particular, facilities with use
agreements involving airlines experiencing financial difficulty may experience a
reduction in revenue  due to the  possible inability of  these airlines to  meet
their  use  agreement obligations  because  of such  financial  difficulties and
possible bankruptcy.  The  Sponsor cannot  predict  what effect  these  industry
conditions  may have on airport revenues which  are dependent for payment on the
financial condition of the  airlines and their usage  of the particular  airport
facility.  Bonds that are secured primarily by the revenue collected by a public
transit system  typically are  additionally secured  by a  pledge of  sales  tax
receipts  collected  at  the state  or  local  level, or  of  other governmental
financial assistance. Transit system net revenues will be affected by variations
in  utilization,  which  in  turn  may  be  affected  by  the  degree  of  local
governmental  subsidization, demographic and  population shifts, and competition
from other  forms of  transportation; and  by increased  costs, including  costs
resulting  from previous deferrals of maintenance. Port authorities derive their
revenues primarily from fees imposed on ships using the facilities. The rate  of
utilization  of such facilities may fluctuate depending on the local economy and
on competition from  competing forms  of transportation  such as  air, rail  and
trucks.
 
   
    WATER  AND/OR SEWERAGE OBLIGATIONS.   Some of the Bonds  in the Trust may be
obligations of issuers whose revenues are derived from the sale of water  and/or
sewerage services. Such Bonds are generally payable from user fees. The problems
of  such  issuers  include  the  ability  to  obtain  timely  and  adequate rate
increases, population decline resulting in  decreased user fees, the  difficulty
of  financing  large construction  programs, the  limitations on  operations and
increased costs  and delays  attributable to  environmental considerations,  the
increasing  difficulty of obtaining or discovering  new supplies of fresh water,
the effect  of  conservation  programs  and the  impact  of  "no-growth"  zoning
ordinances. All of such issuers have been experiencing certain of these problems
in varying degrees.
    
 
   
    UNIVERSITY  AND COLLEGE REVENUE OBLIGATIONS.  Some of the Bonds in the Trust
may be  obligations of  issuers which  are, or  which govern  the operation  of,
colleges  and universities and  whose revenues are  derived mainly from tuition,
dormitory revenues,  grants and  endowments. General  problems of  such  issuers
include  the prospect of a declining  percentage of the population consisting of
"college" age  individuals,  possible  inability  to  raise  tuitions  and  fees
sufficiently  to cover increased  operating costs, the  uncertainty of continued
receipt of  Federal grants  and  state funding,  and government  legislation  or
regulations  which may adversely  affect the revenues or  costs of such issuers.
All of such issuers have been experiencing certain of these problems in  varying
degrees.
    
 
   
    BRIDGE  AUTHORITY AND TOLLROAD OBLIGATIONS.  Some  of the Bonds in the Trust
may be obligations of issuers which  derive their payments from bridge, road  or
tunnel toll revenues. The revenues of such an issuer could be adversely affected
by  competition from toll-free vehicular bridges and roads and alternative modes
of transportation. Such revenues could also be adversely affected by a reduction
in the availability of fuel to  motorists or significant increases in the  costs
thereof.  Specifically, governmental regulations restricting the use of vehicles
in the New  York City  metropolitan area may  adversely affect  revenues of  the
Triborough Bridge and Tunnel Authority.
    
 
   
    DEDICATED-TAX  SUPPORTED  BONDS.   Some of  the  Bonds in  the Trust  may be
obligations of issuers which are payable from and secured by tax revenues from a
designated source, which revenues are pledged  to secure the bonds. The  various
types  of Bonds  described below  differ in  structure and  with respect  to the
rights of the bondholders to the underlying property. Each type of dedicated-tax
supported Bond has distinct risks, only some  of which are set forth below.  One
type of dedicated-tax supported Bond is secured by the
    
 
                                      A-4
<PAGE>
incremental  tax  received  on  either  real  property  or  on  sales  within  a
specifically defined  geographical area;  such tax  generally will  not  provide
bondholders  with a lien on the underlying property or revenues. Another type of
dedicated-tax supported Bond is secured by a special tax levied on real property
within a defined geographical area  in such a manner that  the tax is levied  on
those who benefit from the project; such bonds typically provide for a statutory
lien  on the underlying property for unpaid taxes. A third type of dedicated-tax
supported Bond may  be secured by  a tax  levied upon the  manufacture, sale  or
consumption  of commodities or upon the license to pursue certain occupations or
upon corporate privileges within a taxing jurisdiction. As to any of these types
of Bonds, the  ability of the  designated revenues to  satisfy the interest  and
principal  payments  on such  bonds  may be  affected  by changes  in  the local
economy, the financial success of the enterprise responsible for the payment  of
the  taxes, the  value of any  property on which  taxes may be  assessed and the
ability to collect such taxes  in a timely fashion.  Each of these factors  will
have a different affect on each distinct type of dedicated-tax supported bonds.
 
   
    MUNICIPAL  LEASE BONDS.  Some  of the Bonds in  the Trust may be obligations
that are secured by lease payments  of a governmental entity. Such payments  are
normally  subject to  annual budget  appropriations of  the leasing governmental
entity. A governmental  entity that enters  into such a  lease agreement  cannot
obligate  future  governments to  appropriate for  and  make lease  payments but
covenants to take such action as is necessary to include any lease payments  due
in  its budgets and to make the appropriations therefor. A governmental entity's
failure to appropriate for and to make payments under its lease obligation could
result in insufficient funds  available for payment  of the obligations  secured
thereby.
    
 
   
    ORIGINAL  ISSUE DISCOUNT  BONDS AND  STRIPPED OBLIGATIONS.   Certain  of the
Bonds in the Trust may be original issue discount bonds. These Bonds were issued
with nominal  interest rates  less than  the rates  then offered  by  comparable
securities  and as a consequence  were originally sold at  a discount from their
face, or par, values. This original  issue discount, the difference between  the
initial  purchase price and face value, is deemed under current law to accrue on
a daily basis and the accrued  portion is treated as tax-exempt interest  income
for  federal income tax purposes. On sale  or redemption, gain, if any, realized
in excess of the earned  portion of original issue  discount will be taxable  as
capital  gain. See "What is the Tax Status of Unitholders". The current value of
an original issue discount bond reflects the present value of its face amount at
maturity. In a stable interest rate environment, the market value of an original
issue discount bond would  tend to increase  more slowly in  early years and  in
greater increments as the bond approached maturity.
    
 
   
    Certain of the original issue discount bonds in the Trust may be zero coupon
bonds. Zero coupon bonds do not provide for the payment of any current interest;
the  buyer receives only the right to receive a final payment of the face amount
of the bond at its maturity. The effect  of owning a zero coupon bond is that  a
fixed  yield is earned not only on  the original investment but also, in effect,
on all  discount  earned  during  the life  of  the  obligation.  This  implicit
reinvestment of earnings at the same rate eliminates the risk of being unable to
reinvest  the income on such obligation at a rate as high as the implicit yield,
but at the same time also eliminates the holder's ability to reinvest at  higher
rates  in  the  future.  For  this reason,  zero  coupon  bonds  are  subject to
substantially greater  price  fluctuations  during periods  of  changing  market
interest  rates  than are  securities of  comparable  quality that  pay interest
currently.
    
 
    Original issue discount bonds, including  zero coupon bonds, may be  subject
to  redemption at prices  based on the  issue price plus  the amount of original
issue  discount  accreted  to  redemption   (the  "accreted  value")  plus,   if
applicable,  some premium.  Pursuant to such  call provisions  an original issue
discount  bond   may   be   called   prior   to   its   maturity   date   at   a
 
                                      A-5
<PAGE>
   
price  less than  its face  value. See  the "Schedule  of Investments"  for more
information about the call provisions of portfolio Bonds.
    
 
   
    Certain of  the  Bonds in  the  Trust  may be  Stripped  Obligations,  which
represent  evidences of ownership with respect to either the principal amount of
or a payment of interest on a tax-exempt obligation. An obligation is "stripped"
by depositing it with a custodian, which then effects a separation in  ownership
between  the bond and any interest payment which has not yet become payable, and
issues evidences of ownership with respect to such constituent parts. A Stripped
Obligation therefore has economic characteristics similar to zero coupon  bonds,
as described above.
    
 
    Each  Stripped Obligation has  been purchased at a  discount from the amount
payable at maturity. With respect to each Unitholder, the Internal Revenue  Code
treats  as "original issue discount" that portion of the discount which produces
a yield to maturity (as of the date of purchase of the Unitholder's Units) equal
to the lower of the coupon rate of interest on the underlying obligation or  the
yield  to maturity on the basis of  the purchase price of the Unitholder's Units
which is allocable to  each Stripped Obligation.  Original issue discount  which
accrues with respect to a Stripped Obligation will be exempt from Federal income
taxation  to the  same extent  as interest  on the  underlying obligations. (See
Section 11, " What Is The Tax Status of Unitholders".)
 
    Unitholders should consult their own tax advisers with respect to the  state
and  local tax consequences of owning  original issue discount bonds or Stripped
Obligations. Under applicable  provisions governing determination  of state  and
local  taxes, interest on original issue  discount bonds or Stripped Obligations
may be deemed  to be received  in the year  of accrual even  though there is  no
corresponding cash payment.
 
4.  COMPOSITION OF TRUSTS
 
   
The  Trust initially  consists of delivery  statements relating  to contracts to
purchase Bonds (or of such Bonds) as are listed under "Schedule of  Investments"
and,  thereafter, of  such Bonds as  may continue to  be held from  time to time
(including certain securities deposited in  the Trust in substitution for  Bonds
not delivered to the Trust or in exchange or substitution for Bonds upon certain
refundings),  together  with  accrued  and  undistributed  interest  thereon and
undistributed cash realized from the disposition of Bonds.
    
 
   
    "WHEN-ISSUED"  AND  "DELAYED  DELIVERY"  TRANSACTIONS.    The  contracts  to
purchase  Bonds delivered to  the Trustee represent an  obligation by issuers or
dealers to deliver  Bonds to  the Sponsor for  deposit in  the Trust.  Normally,
"regular  way"  contracts are  settled and  the Bonds  delivered to  the Trustee
within a relatively  short period  of time.  However, certain  of the  contracts
relate  to Bonds which have not been issued  as of the Date of Deposit and which
are commonly referred to  as "when issued"  or "when, as  and if issued"  Bonds.
Although  the Sponsor does not believe it is  likely, one or more of the issuers
of such Bonds might decide not to proceed with such offerings. If such Bonds, or
replacement bonds described  below, are not  acquired by the  Trust or if  their
delivery  is  delayed, the  Estimated Current  Returns  and Estimated  Long Term
Returns shown herein may be reduced.  Certain of the contracts for the  purchase
of  Bonds provide for delivery dates after  the date of settlement for purchases
made on  the  Date of  Deposit.  Interest on  such  "when issued"  and  "delayed
delivery"  Bonds accrues to the benefit of Unitholders commencing with the first
settlement date for the Units. However,  in the opinion of counsel,  Unitholders
who  purchase their Units prior to the date such Bonds are actually delivered to
the Trustee must reduce the  tax basis of their  Units for interest accruing  on
such  Bonds during the interval between their purchase of Units and the delivery
of the Bonds because such amounts constitute a return of principal. As a  result
of  such adjustment, the  Estimated Current Returns set  forth herein (which are
based on the Public
    
 
                                      A-6
<PAGE>
   
Offering Price as  of the  business day  prior to the  Date of  Deposit) may  be
slightly  lower than Unitholders will receive after the first year, assuming the
Portfolio does not change and estimated  annual expense does not vary from  that
set  forth under "Essential Information Regarding the Trust." Those Bonds in the
Trust purchased with delivery dates after  the date of settlement for  purchases
made on the Date of Deposit are so noted in the Schedule of Investments.
    
 
   
    LIMITED  REPLACEMENT OF CERTAIN BONDS.   Neither the Sponsor nor the Trustee
shall be liable in any  way for any default, failure  or defect in any Bond.  In
the event of a failure to deliver any Bond that has been purchased for the Trust
under  a contract, including those  Bonds purchased on a  when, as and if issued
basis ("Failed Bonds"), the Sponsor is authorized under the Indenture to  direct
the  Trustee to acquire  other specified Bonds ("Replacement  Bonds") to make up
the original corpus of the Trust. The Replacement Bonds must be purchased within
20 days after  delivery of notice  of the failed  contract and the  cost to  the
Trust  (exclusive  of  accrued interest)  may  not  exceed the  amount  of funds
reserved for the purchase  of the Failed Bonds.  The Replacement Bonds (i)  must
satisfy  the criteria previously described for  Bonds originally included in the
Trust, (ii) must have a  fixed maturity date after the  date of purchase of  not
less  than approximately 15 years in  the case of National Trusts, approximately
11 years in the case of a Long Intermediate Trust, approximately 5 years in  the
case  of Intermediate or State Intermediate Trusts, approximately 3 years in the
case of a Short  Intermediate Trust and  approximately 1 year in  the case of  a
Short  Term Trust,  but not later  than the  maturity date of  the Failed Bonds,
(iii) must be acquired  at a cost  to the Trust  equal to the  cost of the  same
principal  amount of Bonds  provided in the  failed contract and  have a current
return and yield  to maturity  not less  than the  current return  and yield  to
maturity  of the  Failed Bonds and  (iv) shall not  be "when, as  and if issued"
Bonds. Whenever a Replacement Bond has been acquired for the Trust, the  Trustee
shall,  within five days after the delivery thereof, mail or deliver a notice of
such acquisition to  all Unitholders of  the Trust involved.  Once the  original
corpus  of the  Trust is acquired,  the Trustee will  have no power  to vary the
investment of the Trust; i.e., the Trust  will have no managerial power to  take
advantage of market variation to improve a Unitholder's investment.
    
 
   
    To  the extent the right of  limited substitution described in the preceding
paragraph shall not  be utilized  to acquire  Replacement Bonds  for the  entire
principal amount of Failed Bonds, the Sponsor shall refund to all Unitholders of
the  Trust  involved the  sales  charge attributable  to  such Failed  Bonds not
replaced, and  the principal  and accrued  interest attributable  to such  Bonds
shall  be distributed  not more  than 30  days after  the determination  of such
failure or at such earlier time as  the Trustee in its sole discretion deems  to
be  in  the interest  of  the Unitholders.  Any  such accrued  interest  paid to
Unitholders will be paid by the Sponsor and, accordingly, will not be treated as
tax-exempt income. In the event Failed Bonds in the Trust could not be replaced,
the Net Annual Interest Income per Unit  for the Trust would be reduced and  the
Estimated Current Return thereon might be lowered.
    
 
   
    SALE,  MATURITY AND REDEMPTION OF BONDS.  Certain of the Bonds may from time
to time  under certain  circumstances be  sold  or redeemed  or will  mature  in
accordance  with their terms. The proceeds from  such events will be used to pay
for  Units  redeemed   or  distributed  to   Unitholders  and  not   reinvested;
accordingly, no assurance can be given that the Trust will retain for any length
of time its present size and composition.
    
 
   
    All  of the Bonds  in the Trust are  subject to being  called or redeemed in
whole or  in part  prior to  their stated  maturities pursuant  to the  optional
redemption  provisions described  in the "Schedule  of Investments"  and in most
cases pursuant to sinking fund, special or extraordinary redemption  provisions.
A  bond  subject to  optional  call is  one which  is  subject to  redemption or
refunding   prior   to   maturity   at    the   option   of   the   issuer.    A
    
 
                                      A-7
<PAGE>
refunding  is a method by which a bond issue is redeemed, at or before maturity,
by the proceeds of a new bond  issue. A bond subject to sinking fund  redemption
is  one  which  is  subject to  partial  call  from  time to  time  from  a fund
accumulated for  the scheduled  retirement of  a portion  of an  issue prior  to
maturity.  Special  or  extraordinary  redemption  provisions  may  provide  for
redemption of  all or  a portion  of an  issue upon  the occurrence  of  certain
circumstances  related to  defaults or  unanticipated changes  in circumstances.
Events that may  permit or require  the special or  extraordinary redemption  of
bonds include, among others: substantial damage to or destruction of the project
for  which the proceeds  of the bonds were  used; exercise by  a local, state or
federal governmental  unit  of  its power  of  eminent  domain to  take  all  or
substantially  all of the project for which the proceeds of the bonds were used;
a final determination that the interest on the bonds is taxable; changes in  the
economic  availability  of raw  materials, operating  supplies or  facilities or
technological or other  changes which render  the operation of  the project  for
which  the proceeds of  the bonds were  used uneconomical; changes  in law or an
administrative or judicial decree which render the performance of the  agreement
under which the proceeds of the bonds were made available to finance the project
impossible  or  which  create  unreasonable burdens  or  which  impose excessive
liabilities, such as taxes, not imposed on the date the bonds are issued on  the
issuer  of the bonds or the user of the proceeds of the bonds; an administrative
or judicial decree  which requires the  cessation of a  substantial part of  the
operations  of  the  project  financed  with  the  proceeds  of  the  bonds;  an
overestimate of the costs of the project to be financed with the proceeds of the
bonds resulting in excess proceeds which may  be applied to redeem bonds; or  an
underestimate  of a source of funds securing the bonds resulting in excess funds
which may be applied to  redeem bonds. The Sponsor is  unable to predict all  of
the  circumstances which may result in such redemption of an issue of Bonds. See
the discussion of the  various types of bond  issues, above, for information  on
the  call provisions of such bonds,  particularly single family mortgage revenue
bonds.
 
   
    The exercise of redemption or call provisions will (except to the extent the
proceeds of the called Bonds are used to pay for Unit redemptions) result in the
distribution of  principal  and may  result  in a  reduction  in the  amount  of
subsequent  interest distributions;  it may  also affect  the current  return on
Units of the Trust involved. Redemption pursuant to optional call provisions  is
more  likely to  occur, and  redemption pursuant to  sinking fund  or special or
extraordinary redemption provisions may occur,  when the Bonds have an  offering
side  evaluation which  represents a  premium over  par. Redemption  pursuant to
optional call provisions  may be,  and redemption  pursuant to  sinking fund  or
special or extraordinary redemption provisions is likely to be, at a price equal
to the par value of the bonds without any premium (in the case of original issue
discount  bonds, such redemption is generally to be made at the issue price plus
the amount of original issue discount  accreted to the date of redemption;  such
price  is referred to herein  as "accreted value"). Because  Bonds may have been
valued at prices above or below par value or the then current accreted value  at
the  time Units were  purchased, Unitholders may  realize gain or  loss upon the
redemption of portfolio  Bonds. (See  Sections 11 and  13 and  the "Schedule  of
Investments.")
    
 
   
    CERTAIN  TAX  MATTERS;  LITIGATION.    Certain of  the  Bonds  in  the Trust
portfolio may be subject  to continuing requirements such  as the actual use  of
bond proceeds, manner of operation of the project financed from bond proceeds or
rebate  of excess  earnings on  bond proceeds that  may affect  the exemption of
interest on such  Bonds from Federal  income taxation. Although  at the time  of
issuance  of each  of the  Bonds in  the Trust  an opinion  of bond  counsel was
rendered as to the exemption of interest on such obligations from Federal income
taxation, and the issuers covenanted  to comply with all requirements  necessary
to retain the tax-exempt status of the Bonds, there can be no assurance that the
    
 
                                      A-8
<PAGE>
respective  issuers  or  other obligors  on  such obligations  will  fulfill the
various continuing  requirements  established  upon issuance  of  the  Bonds.  A
failure to comply with such requirements may cause a determination that interest
on  such  obligations  is  subject  to  Federal  income  taxation,  perhaps even
retroactively from the  date of  issuance of  such Bonds,  thereby reducing  the
value of the Bonds and subjecting Unitholders to unanticipated tax liabilities.
 
   
    To  the best knowledge of the Sponsor,  there is no litigation pending as of
the Date of Deposit in respect of  any Bonds which might reasonably be  expected
to  have a material adverse  effect on the Trust. It  is possible that after the
Date of Deposit, litigation may be initiated with respect to Bonds in the Trust.
Any such litigation  may affect  the validity of  such Bonds  or the  tax-exempt
nature  of the  interest thereon,  but while the  outcome of  litigation of such
nature can never  be entirely  predicted, the opinions  of bond  counsel to  the
issuer  of each Bond on the date of  issuance state that such Bonds were validly
issued and that the  interest thereon is, to  the extent indicated, exempt  from
Federal income tax.
    
 
5.  WHY AND HOW ARE THE BONDS INSURED?
 
   
INSURANCE ON BONDS IN THE INSURED TRUST
    
 
   
Insurance  guaranteeing  the  timely payment,  when  due, of  all  principal and
interest on the Bonds in the Insured  Trust has been obtained by the Sponsor  or
by  the  issuers or  underwriters  of Bonds  from  the Municipal  Bond Investors
Assurance Corporation (the "Insurer").  Some of the Bonds  in the Insured  Trust
may  be covered by a policy or policies  of insurance obtained by the issuers or
underwriters of  the  Bonds  from  Municipal  Bond  Insurance  Association  (the
"Association") or Bond Investors Guaranty Insurance Company ("BIG"). The Insurer
has  issued a policy or policies of insurance  covering each of the Bonds in the
Insured Trust, each policy to remain in force until the payment in full of  such
Bonds  and whether or not the Bonds continue to be held by the Insured Trust. By
the terms  of each  policy the  Insurer will  unconditionally guarantee  to  the
holders  or owners of the Bonds the payment, when due, required of the issuer of
the Bonds of an amount  equal to the principal of  and interest on the Bonds  as
such  payments shall become due but not be paid (except that in the event of any
acceleration of the  due date of  principal by reason  of mandatory or  optional
redemption,  default or otherwise, the payments  guaranteed will be made in such
amounts and  at  such times  as  would  have been  due  had there  not  been  an
acceleration).  The  Insurer will  be responsible  for  such payments,  less any
amounts received by the holders or owners of the Bonds from any trustee for  the
bond  issuers or from  any other sources  other than the  Insurer. The Insurer's
policies relating to  small industrial development  bonds and pollution  control
revenue  bonds also guarantee the full and complete payments required to be made
by or on behalf  of an issuer  of Bonds pursuant  to the terms  of the Bonds  if
there  occurs an event which results in the loss of the tax-exempt status of the
interest on such Bonds,  including principal, interest  or premium payments,  if
any,  as and when thereby required. The Insurer has indicated that its insurance
policies do not insure the payment of  principal or interest on bonds which  are
not required to be paid by the issuer thereof because the bonds were not validly
issued;  as  indicated  under  "What  is the  Tax  Status  of  Unitholders?" the
respective issuing authorities have received  opinions of bond counsel  relating
to  the valid issuance of each of the  Bonds in the Insured Trust. The Insurer's
policy also does not insure against  non-payment of principal of or interest  on
the Bonds resulting from the insolvency, negligence or any other act or omission
of the trustee or other paying agent for the Bonds. The policy is not covered by
the  Property/ Casualty Insurance  Security Fund specified in  Article 76 of the
New York  Insurance Law.  The  policies are  non-cancellable and  the  insurance
premiums  have been fully paid on or prior to the Date of Deposit, either by the
Sponsor or, if a policy has been obtained by a Bond issuer, by such issuer.
    
 
                                      A-9
<PAGE>
    Upon notification from  the trustee  for any bond  issuer or  any holder  or
owner of the Bonds or coupons that such trustee or paying agent has insufficient
funds  to pay any  principal or interest in  full when due,  the Insurer will be
obligated to deposit funds  promptly with State Street  Bank and Trust  Company,
N.A.,  New York, New York, as fiscal  agent for the Insurer, sufficient to fully
cover the deficit. If notice of nonpayment is received on or after the due date,
the Insurer will provide for payment  within one business day following  receipt
of  the notice. Upon payment  by the Insurer of  any Bonds, coupons, or interest
payments, the Insurer shall succeed  to the rights of  the owner of such  Bonds,
coupons or interest payments with respect thereto.
 
    The  Insurer is the principal operating subsidiary of MBIA, Inc., a New York
Stock Exchange listed company. MBIA, Inc. is  not obligated to pay the debts  of
or  claims against the  Insurer. The Insurer is  a limited liability corporation
rather than a  several liability association.  The Insurer is  domiciled in  the
State  of New York and licensed to do business in all 50 states, the District of
Columbia and the Commonwealth of Puerto Rico.
 
    As of December  31, 1992  the Insurer had  admitted assets  of $2.6  billion
(audited),  total liabilities of  $1.7 billion (audited),  and total capital and
surplus of  $896  million  (audited) determined  in  accordance  with  statutory
accounting   practices   prescribed   or  permitted   by   insurance  regulatory
authorities. As of December  31, 1993, the Insurer  had admitted assets of  $3.1
billion  (audited),  total  liabilities  of $2.1  billion  (audited),  and total
capital and  surplus of  $978 million  (audited) determined  in accordance  with
statutory  accounting practices prescribed or  permitted by insurance regulatory
authorities. Copies of the Insurer's  year end financial statements prepared  in
accordance  with statutory accounting practices  are available from the Insurer.
The address of the Insurer is 113 King Street, Armonk, New York 10504.
 
    Effective December 31, 1989, MBIA  Inc. acquired Bond Investors Group,  Inc.
On  January 5, 1990, the  Insurer acquired all of  the outstanding stock of Bond
Investors Group, Inc., the parent of BIG,  now known as MBIA Insurance Corp.  of
Illinois.  Through a reinsurance agreement, BIG has ceded all of its net insured
risks, as well as its unearned premium and contingency reserves, to the  Insurer
and the Insurer has reinsured BIG's net outstanding exposure.
 
    Each  insurance company comprising the Association will be severally and not
jointly obligated  under  the Association  policy  in the  following  respective
percentages:  The  AEtna  Casualty  and  Surety  Company,  33%;  Fireman's  Fund
Insurance Company, 30%;  The Travelers Indemnity  Company, 15%; AEtna  Insurance
Company  (now  known  as CIGNA  Property  and  Casualty Company),  12%;  and The
Continental Insurance Company, 10%.  As a several  obligor, each such  insurance
company  will be  obligated only to  the extent  of its percentage  of any claim
under the  Association  policy and  will  not be  obligated  to pay  any  unpaid
obligation  of any  other member  of the  Association. Each  insurance company's
participation is backed by all of its assets. However, each insurance company is
a multiline insurer involved in several lines of insurance other than  municipal
bond  insurance, and the assets of each insurance company also secure all of its
other insurance policy and surety bond obligations.
 
    The following table sets forth certain unaudited financial information  with
respect  to  the  five  insurance  companies  comprising  the  Association.  The
statistics, which have been furnished by the Association, are as reported by the
insurance  companies  to  the  New  York  State  Insurance  Department  and  are
determined in accordance with statutory accounting principles. No representation
is  made herein as to the accuracy or  adequacy of such information or as to the
absence of material adverse changes in  such information subsequent to the  date
thereof.  In  addition,  these  numbers  are  subject  to  revision  by  the New
 
                                      A-10
<PAGE>
York State  Insurance Department  which, if  revised, could  either increase  or
decrease the amounts.
 
                      MUNICIPAL BOND INSURANCE ASSOCIATION
            FIVE MEMBER COMPANIES ASSETS AND POLICYHOLDERS' SURPLUS
                              AS OF JUNE 30, 1993.
                                (000's omitted)
 
<TABLE>
<CAPTION>
                                                             New York         New York         New York
                                                             Statutory        Statutory     Policyholders'
                                                              Assets         Liabilities        Surplus
                                                          ---------------  ---------------  ---------------
<S>                                                       <C>              <C>              <C>
The AEtna Casualty & Surety Company.....................  $     9,670,645  $     8,278,113   $   1,392,532
Fireman's Fund Insurance Company........................        6,571,313        4,880,776       1,690,537
The Travelers Indemnity Company.........................       10,194,126        8,280,211       1,913,915
CIGNA Property and Casualty Company (formerly AEtna
  Insurance Company)....................................        6,198,088        5,634,331         563,757
The Continental Insurance Company.......................        2,574,504        2,223,194         351,310
                                                          ---------------  ---------------  ---------------
        Total...........................................  $    35,208,676  $    29,296,625   $   5,912,051
                                                          ---------------  ---------------  ---------------
                                                          ---------------  ---------------  ---------------
</TABLE>
 
    Standard   &  Poor's  Corporation  rates  all  new  issues  insured  by  the
Association "AAA" Prime Grade.
 
    Moody's Investors Service rates all  bond issues insured by the  Association
"Aaa"  and  short term  loans  "MIG 1",  both designated  to  be of  the highest
quality.
 
    Each such rating should be evaluated  independently of any other rating.  No
application  has  been  made to  any  other  rating agency  in  order  to obtain
additional ratings  on the  Bonds.  The ratings  reflect the  respective  rating
agency's  current assessment of the creditworthiness  of the Association and its
ability to pay claims on its  policies of insurance. Any further explanation  as
to  the  significance  of  the  above ratings  may  be  obtained  only  from the
applicable rating agency.
 
    Moody's Investors Service rates all bond issues insured by the Insurer "Aaa"
and short-term loans "MIG 1," both designated to be of the highest quality.
 
    Standard & Poor's  Ratings Group,  a division  of McGraw  Hill ("Standard  &
Poor's") rates all new issues insured by the Insurer "AAA" Prime Grade."
 
    The  Moody's Investors  Service rating  of the  Insurer should  be evaluated
independently of the  Standard & Poor's  Corporation rating of  the Insurer.  No
application  has  been  made to  any  other  rating agency  in  order  to obtain
additional ratings  on the  Bonds.  The ratings  reflect the  respective  rating
agency's  current  assessment of  the creditworthiness  of  the Insurer  and its
ability to  pay  claims  on  its policies  of  insurance  (See  "Description  of
Ratings.")  Any further explanation as to  the significance of the above ratings
may be obtained only from the applicable rating agency.
 
    The above ratings are  not recommendations to buy,  sell or hold the  Bonds,
and  such ratings may  be subject to revision  or withdrawal at  any time by the
rating agencies. Any downward revision or  withdrawal of either or both  ratings
may have an adverse effect on the market price of the Bonds.
 
    Because  the insurance on the  Bonds will be effective  so long as the Bonds
are outstanding, such insurance  will be taken into  account in determining  the
market  value  of  the  Bonds  and therefore  some  value  attributable  to such
insurance will be included in the
 
                                      A-11
<PAGE>
   
value of  the Units  of the  Insured  Trust. The  insurance does  not,  however,
guarantee the market value of the Bonds or of the Units.
    
 
6.  HOW IS THE PUBLIC OFFERING PRICE DETERMINED?
 
   
The  Public Offering Price of  the Units of the Trust  is equal to the Trustee's
determination of the aggregate  OFFERING prices of  the Bonds deposited  therein
(minus  any  advancement to  the  principal account  of  the Trust  made  by the
Trustee) plus a sales charge of 5.152%  of the aggregate offering prices in  the
case  of National and State  Trusts, 4.439% of the  aggregate offering prices in
the case of Long Intermediate Trusts, 4.058% of the aggregate offering prices in
the case of Intermediate Trusts, 3.093% of the aggregate offering prices in  the
case of Short Intermediate Trusts and 2.564% of the aggregate offering prices in
the  case of Short  Term Trusts, in each  case adding to  the total thereof cash
held by the Trust,  if any, and dividing  the sum so obtained  by the number  of
Units  outstanding in the Trust. This  computation produces a gross underwriting
profit equal to 4.90% of the Public  Offering Price in the case of National  and
State  Trusts,  4.25%  of  the  Public  Offering  Price  in  the  case  of  Long
Intermediate Trusts,  3.90%  of  the  Public  Offering  Price  in  the  case  of
Intermediate  Trusts, 3.00% of  the Public Offering  Price in the  case of Short
Intermediate Trusts and 2.50% of the Public Offering Price in the case of  Short
Term Trusts.
    
 
   
    The  sales charge applicable to quantity purchases is reduced on a graduated
scale for sales to any  purchaser of at least $50,000  or 500 Units and will  be
applied  on whichever basis is more favorable  to the purchaser. For purposes of
calculating the applicable  sales charge,  purchasers who  have indicated  their
intent  to purchase a specified amount of Units of the Trust described herein in
the primary offering period  or units of any  other series of Nuveen  Tax-Exempt
Unit  Trusts in the primary offering period by executing and delivering a letter
of intent to the Sponsor, which letter of intent must be in a form acceptable to
the Sponsor  and shall  have a  maximum  duration of  thirteen months,  will  be
eligible  to receive  a reduced  sales charge  according to  the following table
based on the amount of intended  aggregate purchases as expressed in the  letter
of  intent. By  establishing a  letter of intent,  a Unitholder  agrees that the
first purchase of Units following the execution of such letter of intent will be
at least 5% of the total amount of the intended aggregate purchases expressed in
such Unitholder's letter of  intent. Further, through  the establishment of  the
letter of intent, such Unitholder agrees that Units representing 5% of the total
amount  of the intended purchases will be  held in escrow by United States Trust
Company of New York pending completion of these purchases. All distributions  on
Units  held in escrow  will be credited  to such Unitholder's  account. If total
purchases, less redemptions,  prior to the  expiration of the  letter of  intent
period  equal or exceed the amount specified in a Unitholder's letter of intent,
the Units held in  escrow will be transferred  to such Unitholder's account.  If
the  total purchases, less redemptions, are  less than the amount specified, the
Unitholder involved  must pay  the Sponsor  an amount  equal to  the  difference
between  the amounts paid for  these purchases and the  amounts which would have
been paid if the higher sales charge  had been applied. If such Unitholder  does
not  pay  the additional  amount within  20  days after  written request  by the
Sponsor or the Unitholder's securities representative, the Sponsor will instruct
the Trustee to redeem an  appropriate number of the  escrowed Units to meet  the
required  payment. By establishing a letter  of intent, a Unitholder irrevocably
appoints the Sponsor as attorney  to give instructions to  redeem any or all  of
such  Unitholder's  escrowed  Units,  with full  power  of  substitution  in the
premises. A Unitholder or his securities representative must notify the  Sponsor
    
 
                                      A-12
<PAGE>
whenever  such Unitholder makes a purchase of Units that he wishes to be counted
towards the intended amount.  Sales charges during  the primary offering  period
are as follows:
 
<TABLE>
<CAPTION>
                                                          National and State     Long Intermediate Trusts
                                                                Trusts                                       Intermediate Trusts
                                                       ------------------------  ------------------------  ------------------------
<S>                                                    <C>          <C>          <C>          <C>          <C>          <C>
                                                         Percent      Percent      Percent      Percent      Percent      Percent
                                                           of         of Net         of         of Net         of         of Net
                                                        Offering      Amount      Offering      Amount      Offering      Amount
                  Number of Units*                        Price      Invested       Price      Invested       Price      Invested
- -----------------------------------------------------  -----------  -----------  -----------  -----------  -----------  -----------
Less than 500........................................        4.90%       5.152%        4.25%       4.439%        3.90%       4.058%
500 but less than 1,000..............................        4.75        4.987         4.15        4.330         3.70        3.842
1,000 but less than 2,500............................        4.50        4.712         3.85        4.004         3.50        3.627
2,500 but less than 5,000............................        4.25        4.439         3.60        3.734         3.25        3.359
5,000 but less than 10,000...........................        3.50        3.627         3.35        3.466         3.00        3.093
10,000 but less than 25,000..........................        3.00        3.093         3.00        3.093         2.75        2.828
25,000 but less than 50,000..........................        2.50        2.564         2.50        2.564         2.50        2.564
50,000 or more.......................................        2.00        2.041         2.00        2.041         2.00        2.041
</TABLE>
 
<TABLE>
<CAPTION>
                                                          Short Intermediate
                                                                Trusts              Short Term Trusts
                                                       ------------------------  ------------------------
<S>                                                    <C>          <C>          <C>          <C>          <C>          <C>
                                                         Percent      Percent      Percent      Percent
                                                           of         of Net         of         of Net
                                                        Offering      Amount      Offering      Amount
                  Number of Units*                        Price      Invested       Price      Invested
- -----------------------------------------------------  -----------  -----------  -----------  -----------
Less than 500........................................        3.00%       3.093%        2.50%       2.564%
500 but less than 1,000..............................        2.80        2.881         2.30        2.354
1,000 but less than 2,500............................        2.60        2.670         2.10        2.145
2,500 but less than 5,000............................        2.35        2.407         1.85        1.885
5,000 but less than 10,000...........................        2.10        2.145         1.60        1.626
10,000 but less than 25,000..........................        1.85        1.885         1.35        1.368
25,000 but less than 50,000..........................        1.80        1.833         1.25        1.266
50,000 or more.......................................        1.50        1.523         1.15        1.163
</TABLE>
 
*Breakpoint  sales charges are computed both on  a dollar basis and on the basis
 of the number of Units purchased, using the equivalent of 500 Units to $50,000,
 2,500 Units to $250,000 etc., and will  be applied on that basis which is  more
 favorable to the purchaser.
 
   
    For "secondary market" sales the Public Offering Price per Unit of the Trust
is  determined by adding to the Trustee's determination of the BID price of each
Bond in the Trust  a sales charge  determined in accordance  with the table  set
forth  below based upon  the number of  years remaining to  the maturity of each
such Bond, adjusting  the total to  reflect the amount  of any cash  held in  or
advanced  to the principal account  of the Trust and  dividing the result by the
number of Units then outstanding. For  purposes of this calculation, Bonds  will
be  deemed to mature on  their stated maturity dates  unless: (a) the Bonds have
been called for redemption or funds or securities have been placed in escrow  to
redeem  them on  an earlier  call date, in  which case  such call  date shall be
deemed to be the date upon which they mature; or (b) such Bonds are subject to a
"mandatory put," in which case such mandatory put date shall be deemed to be the
date upon which they mature.
    
 
   
    Pursuant to the terms of the Indenture, the Trustee may terminate the  Trust
if  the net asset value of such Trust,  as shown by any evaluation, is less than
20% of the original principal  amount of the Trust.  In the course of  regularly
appraising the value of Bonds in the Trust, the Sponsor will attempt to estimate
the  date on  which the  Trust's value will  fall below  the 20%  level based on
anticipated bond events over  a five year  period, including maturities,  escrow
calls  and  current  calls or  refundings,  assuming certain  market  rates. The
Sponsor intends from time to time to recommend that certain Trusts whose  values
have  fallen or are anticipated to fall  below the 20% level be terminated based
on certain criteria  which could adversely  affect the Trust's  diversification.
Once the Sponsor has determined that the Trust's value has or may fall below the
20%  level within a five-year period, for purposes of computing the sales charge
using the table set forth below, the maturity of each bond in such Trust will be
deemed to be the earlier of the estimated termination date of the Trust, or  the
actual  date used  when pricing the  bond under  Municipal Securities Rulemaking
Board rules and interpretations issued thereunder.
    
 
                                      A-13
<PAGE>
   
    The effect of this method of sales charge calculation will be that different
sales charge rates will be applied to  the various Bonds in the Trust  portfolio
based  upon  the maturities  of  such Bonds,  in  accordance with  the following
schedule. As  shown, the  sales charge  on  Bonds in  each maturity  range  (and
therefore the aggregate sales charge on the purchase) is reduced with respect to
purchases of at least $50,000 or 500 Units:
    
<TABLE>
<CAPTION>
                                                                  Amount of Purchase*
                             ---------------------------------------------------------------------------------------------
<S>                          <C>          <C>          <C>          <C>          <C>          <C>            <C>
                                            $50,000     $100,000     $250,000     $500,000     $1,000,000     $2,500,000
                                Under         to           to           to           to            to             to
Years to Maturity              $50,000      $99,999     $249,999     $499,999     $999,999     $2,499,999     $4,999,999
- ---------------------------  -----------  -----------  -----------  -----------  -----------  -------------  -------------
Less than 1................           0            0            0            0            0             0              0
1 but less than 2..........       1.523%       1.446%       1.369%       1.317%       1.215%        1.061%          .900%
2 but less than 3..........       2.041        1.937        1.833        1.729        1.626         1.420          1.225
3 but less than 4..........       2.564        2.433        2.302        2.175        2.041         1.781          1.546
4 but less than 5..........       3.093        2.961        2.828        2.617        2.459         2.175          1.883
5 but less than 7..........       3.627        3.433        3.239        3.093        2.881         2.460          2.165
7 but less than 10.........       4.167        3.951        3.734        3.520        3.239         2.828          2.489
10 but less than 13........       4.712        4.467        4.221        4.004        3.788         3.253          2.842
13 but less than 16........       5.263        4.988        4.712        4.439        4.167         3.627          3.169
16 or more.................       5.820        5.542        5.263        4.987        4.603         4.004          3.500
 
<CAPTION>
 
<S>                          <C>
 
                              $5,000,000
Years to Maturity               or more
- ---------------------------  -------------
Less than 1................            0
1 but less than 2..........         .750%
2 but less than 3..........        1.030
3 but less than 4..........        1.310
4 but less than 5..........        1.590
5 but less than 7..........        1.870
7 but less than 10.........        2.150
10 but less than 13........        2.430
13 but less than 16........        2.710
16 or more.................        3.000
</TABLE>
 
 *Breakpoint  sales charges are computed both on a dollar basis and on the basis
  of the  number  of Units  purchased,  using the  equivalent  of 500  Units  to
  $50,000,  2,500 Units  to $250,000,  etc., and will  be applied  on that basis
  which is more favorable to the purchaser.
 
    The secondary market sales charges above  are expressed as a percent of  the
net  amount invested; expressed as  a percent of the  Public Offering Price, the
maximum sales charge on  any Trust, including one  consisting entirely of  Bonds
with  16 years  or more to  maturity, would be  5.50% (5.820% of  the net amount
invested). For purposes of illustration, the sales charge on a Trust  consisting
entirely  of Bonds maturing  in 13 to  16 years would  be 5% (5.263%  of the net
amount invested); that on a Trust consisting entirely of Bonds maturing in  five
to  seven years would be 3.5% (3.627% of the net amount invested); and that on a
Trust consisting entirely of Bonds maturing in three to four years would be 2.5%
(2.564% of the net  amount invested). The actual  secondary market sales  charge
included in the Public Offering Price of any particular Trust will depend on the
maturities of the Bonds in the portfolio of such Trust.
 
   
    At  all  times while  Units are  being  offered for  sale, the  Sponsor will
appraise or cause to be appraised daily the value of the underlying Bonds in the
Trust as of  4:00 p.m.  eastern time on  each day  on which the  New York  Stock
Exchange  (the "Exchange") is normally open  and will adjust the Public Offering
Price of the Units commensurate with such appraisal. Such Public Offering  Price
will be effective for all orders received by a dealer or the Sponsor at or prior
to  4:00 p.m. eastern time on each such day. Orders received after that time, or
on a day when the Exchange is closed for a scheduled holiday or weekend, will be
held until the next determination of price.
    
 
    As more fully set  forth in Section 8,  accrued interest from the  preceding
Record  Date to, but not including, the settlement date of the transaction (five
business days after  purchase) will  be added to  the Public  Offering Price  to
determine the purchase price of Units.
 
    The  above graduated  sales charges  will apply  on all  purchases of Nuveen
investment company  securities on  any one  day  by the  same purchaser  in  the
amounts stated, and for this purpose purchases of this Series will be aggregated
with  concurrent purchases  of any  other Series  or of  shares of  any open-end
management investment company of which the Sponsor is principal underwriter  and
with respect to the purchase of which a sales charge is imposed.
 
    Purchases  by or for the account of an  individual and his or her spouse and
children under 21 years  of age will be  aggregated to determine the  applicable
sales charge. The
 
                                      A-14
<PAGE>
graduated  sales charges  are also  applicable to  a trustee  or other fiduciary
purchasing securities for a single trust estate or single fiduciary account.
 
    Units may be purchased at the  Public Offering Price without a sales  charge
by officers or directors and by bona fide, full-time employees of Nuveen, Nuveen
Advisory Corp., Nuveen Institutional Advisory Corp. and The John Nuveen Company,
including  in each case these individuals and their immediate family members (as
defined above).
 
   
    The initial or primary Public  Offering Price of the  Units in the Trust  is
based  upon a pro rata share of the OFFERING prices per Unit of the Bonds in the
Trust plus the  applicable sales  charge. The secondary  market Public  Offering
Price  of the Trust is based upon a pro rata share of the BID prices per Unit of
the Bonds in the Trust plus the applicable sales charge. The OFFERING prices  of
Bonds in a Trust may be expected to average approximately 1% to 2% more than the
BID  prices of such Bonds  in the case of  National, Long Intermediate and State
Trusts, 3/4%  to 1  1/2% in  the  case of  Intermediate and  Short  Intermediate
Trusts,  and  1/2% to  3/4% in  the case  of Short  Term Trusts.  The difference
between the bid side evaluation and the offering side evaluation of the Bonds in
the Trust on  the business  day prior to  the Date  of Deposit is  shown in  the
discussion of the Trust portfolio.
    
 
   
    Whether  or not Units are being offered for sale, the Sponsor will determine
the aggregate value of the Trust as of 4:00 p.m. eastern time: (i) on each  June
30 or December 31 (or, if such date is not a business day, the last business day
prior  thereto), (ii) on any day on which  a Unit is tendered for redemption (or
the next succeeding business day  if the date of  tender is a non-business  day)
and (iii) at such other times as may be necessary. For this purpose, a "business
day" shall be any day on which the Exchange is normally open. (See Section 16.)
    
 
7.  MARKET FOR UNITS
 
   
During  the  initial public  offering period,  the Sponsor  intends to  offer to
purchase Units of the Trust at a price equivalent to the pro rata share per Unit
of the  OFFERING prices  of the  Bonds  in the  Trust (plus  accrued  interest).
Afterward,  although  it is  not  obligated to  do  so, the  Sponsor  intends to
maintain a  secondary market  for Units  of the  Trust at  its own  expense  and
continuously  to offer  to purchase  Units of  the Trust  at prices,  subject to
change at  any time,  which  are based  upon  the BID  prices  of Bonds  in  the
portfolio  of the  Trust. If  the supply of  Units of  the Trust  of this Series
exceeds demand, or for some other  business reason, the Sponsor may  discontinue
purchases  of Units of the Trust at such prices. UNITHOLDERS WHO WISH TO DISPOSE
OF THEIR UNITS SHOULD INQUIRE OF THE  TRUSTEE OR THEIR BROKER AS TO THE  CURRENT
REDEMPTION PRICE (SEE SECTION 19). In connection with its secondary marketmaking
activities,  the Sponsor may from time to time enter into secondary market joint
account agreements with other brokers and dealers. Pursuant to such an agreement
the Sponsor will purchase Units from the  broker or dealer at the bid price  and
will place the Units into a joint account managed by the Sponsor; sales from the
account  will be  made in  accordance with the  then current  prospectus and the
Sponsor and the  broker or dealer  will share  profits and losses  in the  joint
account in accordance with the terms of their joint account agreement.
    
 
    Certificates,  if any, for Units are  delivered to the purchaser as promptly
after the date of settlement (five business days after purchase) as the  Trustee
can  complete the mechanics of registration. Normally, Certificates, if any, are
mailed by  the  Trustee within  48  hours after  registration  instructions  are
received.  Purchasers of Units to whom Certificates are issued will be unable to
exercise any right of redemption until they have received their Certificates  as
tender of the Certificate, properly endorsed for transfer. (See Section 19.)
 
   
    Each  Unit of the Trust initially offered by this Prospectus represents that
fractional undivided interest  in the  Trust as  is set  forth under  "Essential
Information Regarding the
    
 
                                      A-15
<PAGE>
   
Trust."  To the extent that any Units of  the Trust are redeemed by the Trustee,
the aggregate value of the  Trust's assets will decrease  by the amount paid  to
the  redeeming  Unitholder,  but  the  fractional  undivided  interest  of  each
unredeemed Unit in  the Trust  will increase proportionately.  The Sponsor  will
initially, and from time to time thereafter, hold Units in connection with their
offering.
    
 
8.  WHAT IS ACCRUED INTEREST?
 
   
Accrued  interest is the accumulation of unpaid interest on a bond from the last
day on  which interest  thereon was  paid. Interest  on Bonds  in the  Trust  is
accounted  for daily on an accrual basis. For this reason, the purchase price of
Units of the Trust will include not only the Public Offering Price but also  the
proportionate  share of  accrued interest  to the  date of  settlement. Interest
accrues to the  benefit of Unitholders  commencing with the  settlement date  of
their purchase transaction.
    
 
    Accrued interest does not include accrual of original issue discount on zero
coupon  bonds, Stripped Obligations or other original issue discount bonds. (See
"Summary of Portfolios--General Trust Information"  and "What Is The Tax  Status
of Unitholders.")
 
   
    In  an effort to reduce the amount  of accrued interest that investors would
have to pay in addition to the Public Offering Price, the Trustee has agreed  to
advance  to the Trust the amount of accrued  interest due on the Bonds as of the
Date of Deposit (which has been designated  the first Record Date for all  plans
of  distribution). This  accrued interest  will be  paid to  the Sponsor  as the
holder of record of  all Units on  the Date of  Deposit. Consequently, when  the
Sponsor  sells Units of the Trust, the amount of accrued interest to be added to
the Public Offering Price to  determine the purchase price  of the Units of  the
Trust  purchased by an investor will include only accrued interest from the Date
of Deposit  to, but  not including,  the date  of settlement  of the  investor's
purchase  (five business days  after purchase), less  any distributions from the
related Interest Account.  The Trustee  will recover  its advancements  (without
interest  or  other cost  to  the Trust)  from  interest received  on  the Bonds
deposited in the Trust.
    
 
   
    The Trustee has no  cash for distribution to  Unitholders until it  receives
interest  payments on the Bonds in the  Trusts. Since municipal bond interest is
accrued daily but  paid only  semi-annually, during  the initial  months of  the
Trusts,  the Interest Accounts,  consisting of accrued  but uncollected interest
and collected interest  (cash), will  be predominantly  the uncollected  accrued
interest that is not available for distribution. However, due to advances by the
Trustee,  the Trustee will provide a first distribution between approximately 30
and 60 days after the Date of  Deposit. Assuming the Trust retains its  original
size  and composition  and expenses  and fees  remain the  same, annual interest
collected and distributed  will approximate  the estimated  Net Annual  Interest
Income  stated herein. However, the  amount of accrued interest  at any point in
time will  be  greater than  the  amount that  the  Trustee will  have  actually
received and distributed to the Unitholders. Therefore, there will always remain
an  item of  accrued interest  that is  included in  the Purchase  Price and the
redemption price of the Units.
    
 
   
    Interest is accounted  for daily and  a proportionate share  of accrued  and
undistributed  interest computed from the preceding  Record Date is added to the
daily valuation of each  Unit of the  Trust. (See Sections 3  and 13.) As  Bonds
mature,  or are redeemed or sold, the  accrued interest applicable to such bonds
is collected and subsequently distributed  to Unitholders. Unitholders who  sell
or redeem all or a portion of their Units will be paid their proportionate share
of  the remaining accrued interest to, but not including, the fifth business day
following the date of sale or tender.
    
 
                                      A-16
<PAGE>
9.  WHAT ARE ESTIMATED LONG TERM RETURN AND ESTIMATED CURRENT RETURN?
 
   
The Estimated Long Term Return for the Trust  is a measure of the return to  the
investor  earned over the estimated  life of the Trust.  The Estimated Long Term
Return represents an average of the yields to maturity (or call) of the Bonds in
the Trust's portfolio calculated in  accordance with accepted bond practice  and
adjusted  to reflect expenses  and sales charges.  Under accepted bond practice,
tax-exempt bonds are customarily offered to investors on a "yield price"  basis,
which  involves computation  of yield  to maturity  or to  an earlier  call date
(whichever produces the lower yield), and which takes into account not only  the
interest  payable  on the  bonds but  also  the amortization  or accretion  to a
specified date of any premium over or discount from the par (maturity) value  in
the  bond's  purchase  price. In  calculating  Estimated Long  Term  Return, the
average yield for  the Trust's  portfolio is  derived by  weighting each  Bond's
yield by the market value of the Bond and by the amount of time remaining to the
date  to which the Bond is priced. Once the average portfolio yield is computed,
this figure is then reduced to reflect estimated expenses and the effect of  the
maximum  sales  charge  paid  by  investors.  The  Estimated  Long  Term  Return
calculation does not take into account the effect of a first distribution  which
may  be less than a regular  distribution or may be paid  at some point after 30
days (or a second distribution which may be less than a normal distribution  for
Unitholders  who choose quarterly or semi-annual  plans of distribution), and it
also does  not  take  into account  the  difference  in timing  of  payments  to
Unitholders  who choose quarterly or semi-annual  plans of distribution, each of
which will reduce the return.
    
 
    Estimated Current Return  is computed  by dividing the  Net Annual  Interest
Income per Unit by the Public Offering Price. In contrast to Estimated Long Term
Return, Estimated Current Return does not reflect the amortization of premium or
accretion of discount, if any, on the Bonds in the Trust's portfolio. Net Annual
Interest Income per Unit is calculated by dividing the annual interest income to
the Trust, less estimated expenses, by the number of Units outstanding.
 
    Net  Annual Interest  Income per Unit,  used to  calculate Estimated Current
Return, will vary  with changes  in fees  and expenses  of the  Trustee and  the
Evaluator  and with the redemption, maturity, exchange or sale of Bonds. A Trust
may experience expenses and  portfolio changes different  from those assumed  in
the  calculation of Estimated Long  Term Return. There thus  can be no assurance
that the Estimated Current Returns or Estimated Long Term Returns quoted  herein
will  be realized in the future. Since both the Estimated Current Return and the
Estimated Long Term Return quoted  herein are based on  the market value of  the
underlying  Bonds on the business  day prior to the  Date of Deposit, subsequent
calculations of these performance measures will reflect the then current  market
value of the underlying Bonds and may be higher or lower.
 
   
    A  portion of the monies received by the  Trust may be treated, in the first
year only, as a return of principal due to the inclusion in the Trust  portfolio
of  "when-issued"  or  other  Bonds  having delivery  dates  after  the  date of
settlement for purchases  made on  the Date of  Deposit. A  consequence of  this
treatment  is that in the computation of  Estimated Current Return for the first
year, such monies are excluded from Net Annual Interest Income and treated as an
adjustment to the Public Offering  Price. (See "Essential Information  Regarding
the Trust" and Sections 4 and 11.)
    
 
   
    For a statement of the Net Annual Interest Income per Unit under the monthly
plan  of  distribution,  and Estimated  Long  Term Yield  and  Estimated Current
Returns based on the Public Offering Prices of the Trust in this Series, all  as
of  the day prior to  the Date of Deposit,  see "Essential Information Regarding
the Trust."
    
 
                                      A-17
<PAGE>
10.  HOW WAS THE PRICE OF THE BONDS DETERMINED AT THE DATE OF DEPOSIT?
 
   
The prices at which the Bonds deposited in the Trusts would have been offered to
the public on the business day prior  to the Date of Deposit were determined  by
the  Trustee on the basis  of an evaluation of such  Bonds prepared by Kenny S&P
Evaluation Services, a  firm regularly  engaged in the  business of  evaluating,
quoting  or appraising  comparable bonds. With  respect to Bonds  in the Insured
Trust, Kenny S&P  Evaluation Services evaluated  the Bonds as  so insured.  (See
Section 5).
    
 
   
    The  amount by which  the Trustee's determination of  the OFFERING PRICES of
the Bonds deposited in the Trust was greater or less than the cost of such Bonds
to the Sponsor was PROFIT OR LOSS  to the Sponsor exclusive of any  underwriting
profit.  (See Section 3.) The Sponsor also may realize FURTHER PROFIT OR SUSTAIN
FURTHER LOSS as a  result of fluctuations  in the Public  Offering Price of  the
Units.  Cash, if any, made available to the Sponsor prior to the settlement date
for a purchase of Units, or prior to the acquisition of all Portfolio securities
by the Trust, may be available for use in the Sponsor's business, and may be  of
benefit to the Sponsor.
    
 
11.  WHAT IS THE TAX STATUS OF UNITHOLDERS?
 
   
At  the  respective times  of issuance  of  the Bonds  opinions relating  to the
validity thereof and to  the exemption of interest  thereon from Federal  income
tax were rendered by bond counsel to the respective issuing authorities. Neither
the  Sponsor nor its counsel  have made any special review  for the Trust of the
proceedings relating  to the  issuance of  the Bonds  or of  the basis  for  the
opinions rendered in connection therewith.
    
 
   
    Taxpayers  must  disclose  on  their  Federal  tax  returns  the  amount  of
tax-exempt  interest  earned  during  the  year.  Federally  tax-exempt  income,
including  income on  Units of  the Trust, will  be taken  into consideration in
computing the portion, if any, of social security benefits received that will be
included in a taxpayer's gross income subject to the Federal income tax.
    
 
    Gain realized on the sale or redemption of the Bonds by the Trustee or of  a
Unit  by  a Unitholder  is includable  in  gross income  for Federal  income tax
purposes, and may be  includable in gross income  for state tax purposes.  (Such
gain  does not include  any amounts received  in respect of  accrued interest or
accrued original  issue  discount,  if  any.) It  should  be  noted  that  under
provisions  of the Revenue Reconciliation Act  of 1993 (the "Tax Act") described
below that subject accretion of market discount on tax-exempt bonds to  taxation
as  ordinary income,  gain realized on  the sale  or redemption of  Bonds by the
Trustee or of Units by a Unitholder that would have been treated as capital gain
under prior law is treated as ordinary  income to the extent it is  attributable
to  accretion of market discount.  Market discount can arise  based on the price
the Trust pays  for the  Bonds or the  price a  Unitholder pays for  his or  her
Units.
 
    In the opinion of Chapman and Cutler, Counsel to the Sponsor, under existing
law:
 
   
    (1) the  Trust is  not an association  taxable as a  corporation for Federal
        income tax purposes. Tax-exempt interest received by the Trust on  Bonds
        deposited  therein will  retain its  status as  tax-exempt interest, for
        Federal income  tax  purposes,  when  received by  the  Trust  and  when
        distributed  to the Unitholders, except that the alternative minimum tax
        and environmental  tax (the  "Superfund  Tax") applicable  to  corporate
        Unitholders  may,  in certain  circumstances, include  in the  amount on
        which such  taxes  are  calculated  a portion  of  the  interest  income
        received  by the Trust. See "Certain Tax Matters Applicable to Corporate
        Unitholders", below;
    
 
   
    (2) each Unitholder of the Trust is considered to be the owner of a pro rata
        portion of the Trust under Subpart E,  subchapter J of Chapter 1 of  the
        Internal Revenue Code
    
 
                                      A-18
<PAGE>
        of  1986  (the "Code")  and will  have  a taxable  event when  the Trust
        disposes of  a Bond  or  when the  Unitholder  redeems or  sells  Units.
        Unitholders  must reduce the tax basis of their Units for their share of
        accrued interest received by the Trust, if any, on Bonds delivered after
        the date the  Unitholders pay  for their Units  and, consequently,  such
        Unitholders may have an increase in taxable gain or reduction in capital
        loss  upon the disposition of such Units.  Gain or loss upon the sale or
        redemption of Units is measured by  comparing the proceeds of such  sale
        or  redemption  with the  adjusted basis  of the  Units. If  the Trustee
        disposes of Bonds (whether by  sale, payment at maturity, redemption  or
        otherwise),  gain or loss is recognized to the Unitholder. The amount of
        any such gain or loss is measured by comparing the Unitholder's pro rata
        share of the total proceeds from such disposition with the  Unitholder's
        basis  for his or her  fractional interest in the  asset disposed of. In
        the case  of  a  Unitholder  who purchases  Units,  such  basis  (before
        adjustment  for  earned  original  issue  discount  and  amortized  bond
        premium, if any)  is determined by  apportioning the cost  of the  Units
        among each of the Trust assets ratably according to value as of the date
        of acquisition of the Units. The tax cost reduction requirements of said
        Code   relating  to  amortization  of   bond  premium  may,  under  some
        circumstances, result in  the Unitholder realizing  a taxable gain  when
        his  or her  Units are  sold or  redeemed for  an amount  equal to their
        original cost; and
 
    (3) any amounts paid on defaulted Bonds  held by the Trustee under  policies
        of  insurance issued with respect to  such Bonds will be excludable from
        Federal gross income if, and to the same extent as, such interest  would
        have  been so excludable if paid by the respective issuer. Paragraph (2)
        of  this   opinion  is   accordingly  applicable   to  policy   proceeds
        representing maturing interest.
 
In the opinion of Carter, Ledyard & Milburn, counsel to the Trustee, and, in the
absence  of a New York Trust from the Series, special counsel for the Series for
New York tax matters, under existing law:
 
   
        Under the income tax laws of the  State and City of New York, the  Trust
    is  not an association taxable as a  corporation and the income of the Trust
    will be treated as the income of the Unitholders.
    
 
    ALL STATEMENTS IN THE PROSPECTUS CONCERNING EXEMPTION FROM FEDERAL, STATE OR
OTHER TAXES ARE THE OPINION OF COUNSEL AND ARE TO BE SO CONSTRUED.
 
   
    The redemption of Units in the Trust by a Unitholder would result in each of
the remaining Unitholders of the  Trust owning a greater proportionate  interest
in  the remaining assets  of the Trust.  Although present law  does not directly
address this matter, it  would appear reasonable  that a remaining  Unitholder's
tax  basis in his  Units would include  his proportionate share  of any proceeds
received by the Trust on the sale of bonds which were not distributed to him but
were instead used by  the Trust to redeem  Units and that his  tax basis in  the
remaining  assets of the Trust  would accordingly be increased  by such share of
proceeds, based on the relative fair market value of the remaining assets of the
Trust as of the date of such redemption.
    
 
    Sections 1288 and 1272 of the Code provide a complex set of rules  governing
the  accrual of original issue discount. These rules provide that original issue
discount accrues either  on the basis  of a constant  compound interest rate  or
ratably over the term of the Bond, depending on the date the Bond was issued. In
addition,  special  rules apply  if the  purchase  price of  a Bond  exceeds the
original issue price plus the amount of original issue discount which would have
previously accrued based upon its issue price (its "adjusted issue price").  The
application  of these rules will also vary depending on the value of the Bond on
the date a Unitholder acquires his Units, and the price the Unitholder pays  for
his  Units. The  accrual of  tax-exempt original  issue discount  on zero coupon
bonds and other original issue discount bonds will
 
                                      A-19
<PAGE>
result in  an  increase in  the  Unitholder's  basis in  such  obligations  and,
accordingly, in his basis in his Units.
 
    The  Tax Act subjects tax-exempt  bonds to the market  discount rules of the
Code effective for  bonds purchased  after April  30, 1993.  In general,  market
discount is the amount (if any) by which the stated redemption price at maturity
exceeds an investor's purchase price (except to the extent that such difference,
if  any, is attributable to original issue  discount not yet accrued). Under the
Tax Act, accretion of market discount is taxable as ORDINARY INCOME; under prior
law, the  accretion had  been  treated as  capital  gain. Market  discount  that
accretes  while the Trust holds a Bond would be recognized as ordinary income by
the Unitholders when principal payments are  received on the Bond, upon sale  or
at  redemption (including early  redemption), or upon the  sale or redemption of
his or  her Units,  unless a  Unitholder elects  to include  market discount  in
taxable  income  as  it  accrues.  The market  discount  rules  are  complex and
Unitholders should consult their  tax advisors regarding  these rules and  their
application.
 
   
    The Internal Revenue Code provides that interest on indebtedness incurred or
continued  to purchase  or carry  obligations, the  interest on  which is wholly
exempt from Federal income taxes, is not deductible. Because each Unitholder  is
treated  for Federal income tax purposes as the owner of a pro rata share of the
Bonds owned by the Trust, interest on  borrowed funds used to purchase or  carry
Units of the Trust will not be deductible for Federal income tax purposes. Under
rules  used by the Internal Revenue  Service for determining when borrowed funds
are considered used for the purpose of purchasing or carrying particular assets,
the purchase of Units may  be considered to have  been made with borrowed  funds
even  though the borrowed  funds are not  directly traceable to  the purchase of
Units (however,  these  rules  generally  do  not  apply  to  interest  paid  on
indebtedness  incurred  to purchase  or improve  a personal  residence). Similar
rules are generally applicable  for state tax purposes.  Special rules apply  in
the  case of certain  financial institutions that  acquire Units. Investors with
questions regarding these issues should consult with their tax advisers.
    
 
   
    In general,  each  issue  of  bonds  in the  Trust  is  subject  to  certain
post-issuance  requirements which must be  met in order for  the interest on the
Bonds to be and remain exempt from Federal income taxation. Bond counsel to each
issuer generally has opined that, assuming continuing compliance by such issuers
with certain covenants, interest on such  Bonds will continue to be exempt  from
Federal income taxation (other than with respect to the application to corporate
Unitholders  of the alternative  minimum tax or the  Superfund Tax, as discussed
below).
    
 
   
    For purposes of computing  the alternative minimum  tax for individuals  and
corporations, interest on certain specified tax-exempt private activity bonds is
included as a preference item. The Trust does not include any such bonds.
    
 
    For  taxpayers  other than  corporations,  net capital  gains  are presently
subject to a maximum tax  rate of 28 percent. However,  it should be noted  that
legislative proposals are introduced from time to time that affect tax rates and
could affect relative differences at which ordinary income and capital gains are
taxed.
 
    CERTAIN  TAX MATTERS  APPLICABLE TO  CORPORATE UNITHOLDERS.  In the  case of
certain corporations, the alternative minimum  tax and the Superfund Tax  depend
upon the corporation's alternative minimum taxable income ("AMTI"), which is the
corporation's  taxable income  with certain  adjustments. One  of the adjustment
items used in computing AMTI and the Superfund Tax of a corporation (other  than
an S corporation, Regulated Investment Company, Real Estate Investment Trust, or
REMIC)  is an amount equal to 75%  of the excess of such corporation's "adjusted
current earnings" over an amount equal to its AMTI (before such adjustment  item
and  the  alternative tax  net  operation loss  deduction).  Although tax-exempt
 
                                      A-20
<PAGE>
   
interest received by the Trust on  Bonds deposited therein will not be  included
in  the gross income of corporations  for Federal income tax purposes, "adjusted
current earnings" includes  all tax-exempt interest,  including interest on  all
Bonds in the Trust and tax-exempt original issue discount.
    
 
    Corporate  Unitholders  are urged  to consult  their  own tax  advisers with
respect to the particular tax consequences  to them resulting under the  Federal
tax  law, including the corporate alternative minimum tax, the Superfund Tax and
the branch profits tax imposed by Section 884 of the Code.
 
    EXCEPT AS NOTED ABOVE AND IN SECTION  3, THE EXEMPTION OF INTEREST ON  STATE
AND  LOCAL  OBLIGATIONS FOR  FEDERAL INCOME  TAX  PURPOSES DOES  NOT NECESSARILY
RESULT IN EXEMPTION UNDER THE INCOME OR OTHER TAX LAWS OF ANY STATE OR CITY. THE
LAWS  OF  THE  SEVERAL  STATES  VARY  WITH  RESPECT  TO  THE  TAXATION  OF  SUCH
OBLIGATIONS.
 
12.  WHAT ARE NORMAL TRUST OPERATING EXPENSES?
 
   
No  annual advisory fee is  charged the Trust by  the Sponsor. The Sponsor does,
however, receive a fee  of $0.17 per  annum per $1,000  principal amount of  the
underlying  Bonds  in  the Trust  for  regularly  evaluating the  Bonds  and for
maintaining surveillance over the portfolio. (See Section 16.)
    
 
   
    The Trustee receives for ordinary recurring services an annual fee for  each
plan  of  distribution for  the  Trust as  set  forth in  "Essential Information
Regarding the Trust."  Each annual  fee is per  $1,000 principal  amount of  the
underlying  Bonds in the Trust  for that portion of  the Trust that represents a
particular plan of distribution. The Trustee's fee may be periodically  adjusted
in response to fluctuations in short-term interest rates (reflecting the cost to
the Trustee of advancing funds to the Trust to meet scheduled distributions) and
may be further adjusted in accordance with the cumulative percentage increase of
the  United  States Department  of Labor's  Consumer  Price Index  entitled "All
Services Less Rent" since  the establishment of the  Trust. The Trustee has  the
use  of funds, if any, being held in  the Interest and Principal Accounts of the
Trust for  future  distributions, payment  of  expenses and  redemptions.  These
Accounts  are non-interest  bearing to  Unitholders. Pursuant  to normal banking
procedures, the Trustee benefits from the use of funds held therein. Part of the
Trustee's compensation for its services to  the Fund is expected to result  from
such use of these funds.
    
 
   
    Premiums  for the policies  of insurance obtained  by the Sponsor  or by the
Bond issuers with respect to  the Bonds in the Insured  Trust have been paid  in
full  prior to  the deposit of  the Bonds  in the Trust,  and the  value of such
insurance has been  included in the  evaluation of  the Bonds in  the Trust  and
accordingly  in the Public  Offering Price of  Units of the  Trust. There are no
annual continuing premiums for such insurance.
    
 
   
    The Sponsor has borne all costs of creating and establishing the Trust.  The
following  are  expenses of  the Trust  and, when  paid  by or  are owed  to the
Trustee, are secured by a lien on the assets of the Trust to which such expenses
are allocable:  (1) the  expenses and  costs  of any  action undertaken  by  the
Trustee  to protect the Trust  and the rights and  interests of the Unitholders;
(2) all taxes and other governmental charges  upon the Bonds or any part of  the
Trust (no such taxes or charges are being levied or made or, to the knowledge of
the  Sponsor,  contemplated); (3)  amounts payable  to the  Trustee as  fees for
ordinary  recurring  services  and  for  extraordinary  non-recurring   services
rendered  pursuant to  the Indenture,  all disbursements  and expenses including
counsel fees  (including fees  of bond  counsel which  the Trustee  may  retain)
sustained or incurred by the Trustee in connection therewith; and (4) any losses
or  liabilities accruing to the Trustee without negligence, bad faith or willful
misconduct on its part. The Trustee is  empowered to sell Bonds in order to  pay
these
    
 
                                      A-21
<PAGE>
amounts  if funds  are not  otherwise available  in the  applicable Interest and
Principal Accounts.
 
   
    The Indenture requires the  Trust to be  audited on an  annual basis at  the
expense  of the Trust by independent public accountants selected by the Sponsor.
The Trustee  shall not  be  required, however,  to cause  such  an audit  to  be
performed  if its  cost to  the Trust shall  exceed $.05  per Unit  on an annual
basis. Unitholders of  a Trust  covered by  an audit may  obtain a  copy of  the
audited financial statements upon request.
    
 
13.  WHEN ARE DISTRIBUTIONS MADE TO UNITHOLDERS?
 
   
Interest  received by the Trustee on the Bonds in the Trust, including that part
of the proceeds of  any disposition of Bonds  which represents accrued  interest
and  including  any insurance  proceeds representing  interest due  on defaulted
Bonds, shall be credited to  the "Interest Account" of  the Trust and all  other
moneys  received by the Trustee shall be  credited to the "Principal Account" of
the Trust.
    
 
   
    The pro rata share  of cash in  the Principal Account in  the Trust will  be
computed as of each semi-annual Record Date and distributions to the Unitholders
as of such Record Date will be made on or shortly after the fifteenth day of the
month. Proceeds received from the disposition, including sale, call or maturity,
of  any of the Bonds and all amounts  paid with respect to zero coupon bonds and
Stripped Obligations will be  held in the Principal  Account and either used  to
pay  for Units  redeemed or distributed  on the Distribution  Date following the
next semi-annual Record Date. The Trustee is not required to make a distribution
from the  Principal  Account  of  the Trust  unless  the  amount  available  for
distribution in such account equals at least ten cents per Unit.
    
 
   
    The  pro rata share of the Interest Account in the Trust will be computed by
the Trustee each month as of each Record Date and distributions will be made  on
or  shortly after the fifteenth day of the  month to Unitholders of the Trust as
of the Record Date who are entitled to distributions at that time under the plan
of distribution chosen. Persons who purchase  Units between a Record Date and  a
Distribution Date will receive their first distribution on the Distribution Date
following the next Record Date under the applicable plan of distribution.
    
 
    Purchasers  of  Units  who desire  to  receive interest  distributions  on a
monthly or quarterly basis may elect to do so at the time of purchase during the
initial public offering  period. Those indicating  no choice will  be deemed  to
have  chosen the  semi-annual distribution  plan. All  Unitholders, however, who
purchase Units during the  initial public offering period  and who hold them  of
record on the first Record Date will receive the first distribution of interest.
Thereafter, Record Dates for monthly distributions will be the first day of each
month;  Record  Dates  for quarterly  distributions  will  be the  first  day of
February,  May,  August   and  November;  and   Record  Dates  for   semi-annual
distributions will be the first day of May and November.
 
   
    Details of distributions per Unit of the Trust under the various plans based
upon  estimated Net Annual Interest  Income at the Date  of Deposit are shown in
the tables appearing in Section 3. The amount of the regular distributions  will
remain  the same so  long as the Trust  portfolio remains the  same and fees and
expenses remain the  same, and will  generally change when  Bonds are  redeemed,
mature or are sold or when fees and expenses increase or decrease.
    
 
    The  plan of  distribution selected  by a  Unitholder will  remain in effect
until changed.  Unitholders  purchasing  Units  in  the  secondary  market  will
initially  receive distributions  in accordance with  the election  of the prior
owner. Unitholders desiring to  change their plan of  distribution may do so  by
sending   a   written  notice   requesting   the  change,   together   with  any
Certificate(s), to  the  Trustee. The  notice  and any  Certificate(s)  must  be
received by the
 
                                      A-22
<PAGE>
Trustee  not later than  the semi-annual Record  Date to be  effective as of the
semi-annual distribution  following  the  subsequent  semi-annual  Record  Date.
Unitholders  are requested to make any such  changes within 45 days prior to the
applicable Record  Date.  Certificates should  only  be sent  by  registered  or
certified  mail to minimize the possibility of  their being lost or stolen. (See
Section 18.)  If no  notice  is received  in proper  form  by the  Trustee,  the
Unitholder will be deemed to have elected to continue the same plan.
 
   
    As  of the first day of each month the Trustee will deduct from the Interest
Account of the Trust or,  to the extent funds  are not sufficient therein,  from
the  Principal Account of the  Trust, amounts needed for  payment of expenses of
the Trust. The Trustee also may withdraw from said accounts such amount, if any,
as it  deems necessary  to  establish a  reserve  for any  governmental  charges
payable out of the Trust. Amounts so withdrawn shall not be considered a part of
the  Trust's assets until such time as the  Trustee shall return all or any part
of such amounts to the appropriate account.
    
 
   
    For the purpose  of minimizing  fluctuations in the  distributions from  the
Interest Account of the Trust, the Trustee is authorized to advance such amounts
as may be necessary to provide for interest distributions of approximately equal
amounts.  The  Trustee  shall  be reimbursed,  without  interest,  for  any such
advances from funds  in the  Interest Account of  the Trust.  The Trustee's  fee
takes  into account the  costs attributable to  the outlay of  capital needed to
make such advances.
    
 
   
    The Trustee  shall withdraw  from  the Interest  Account and  the  Principal
Account  of the Trust such  amounts as may be  necessary to cover redemptions of
Units of the Trust by the Trustee. (See Section 19.)
    
 
    Funds which are available for future distributions, redemptions and  payment
of  expenses are held in accounts  which are non-interest bearing to Unitholders
and are available for use by the Trustee pursuant to normal banking procedures.
 
14.  ACCUMULATION PLAN
 
   
The Sponsor, John Nuveen & Co.  Incorporated, is also the principal  underwriter
of  the  Nuveen Municipal  Bond Fund,  Inc. (the  "Bond Fund"),  Nuveen Tax-Free
Reserves, Inc. ("Tax-Free Reserves"), Nuveen California Tax-Free Fund, Inc. (the
"California Fund"),  Nuveen Tax-Free  Bond Fund,  Inc. ("Tax-Free  Bond  Fund"),
Nuveen  Insured Tax-Free  Bond Fund, Inc.  (the "Insured Bond  Fund") and Nuveen
Tax-Free Money  Market Fund,  Inc.  (the "Money  Market  Fund") and  the  Nuveen
Multistate  Tax-Free  Trust  (the  "Multistate  Trust").  Each  of  these  funds
(together, the  "Accumulation Funds")  is  an open-end,  diversified  management
investment   company  into  which  Unitholders  may  choose  to  reinvest  Trust
distributions automatically,  without any  sales  charge. (Reinvestment  in  the
California  Fund is available only to  Unitholders who are California residents.
Reinvestment in the State Portfolios of the Tax-Free Bond Fund, the Insured Bond
Fund, the  Money Market  Fund and  the  Multistate Trust  is available  only  to
Unitholders  who  are residents  of  the states  for  which such  portfolios are
named.) Unitholders may  reinvest both interest  and principal distributions  or
principal  distributions only. Each Accumulation  Fund has investment objectives
which differ in  certain respects  from those  of the  Trust and  may invest  in
securities  which would not be eligible for deposit in the Trust. The investment
adviser to  each Accumulation  Fund  is Nuveen  Advisory Corp.,  a  wholly-owned
subsidiary  of  the  Sponsor. The  following  is  a general  description  of the
investment objectives  and  policies  of  each Accumulation  Fund.  For  a  more
detailed description, Unitholders should read the prospectus of the Accumulation
Fund in which they are interested.
    
 
                                      A-23
<PAGE>
THE BOND FUND
 
    The  Bond  Fund has  the  objective of  providing,  through investment  in a
professionally managed portfolio of long-term  municipal bonds, as high a  level
of  current interest income exempt from Federal income tax as is consistent with
preservation of capital. The Bond Fund  may include in its portfolio  tax-exempt
bonds  rated Baa or BBB or better by Moody's or Standard & Poor's, unrated bonds
which, in the  opinion of  the investment adviser,  have credit  characteristics
equivalent  to  bonds  rated  Baa  or  BBB  or  better,  and  certain  temporary
investments, including securities the interest income from which may be  subject
to Federal income tax.
 
TAX-FREE RESERVES
 
    Tax-Free  Reserves is a  "money market" fund that  includes in its portfolio
only obligations  maturing  within  one  year  from  the  date  of  acquisition,
maintains an average maturity of all investments of 120 days or less, values its
portfolio at amortized cost and seeks to maintain a net asset value of $1.00 per
share. It provides checkwriting and expedited wire redemption privileges for its
shareholders.   Tax-Free  Reserves  has  the  objective  of  providing,  through
investment in  a professionally  managed portfolio  of high  quality  short-term
municipal  obligations, as high  a level of current  interest income exempt from
Federal income  tax  as is  consistent  with  preservation of  capital  and  the
maintenance  of  liquidity.  Tax-Free  Reserves  may  include  in  its portfolio
municipal obligations rated Aaa, Aa, MIG-1, VMIG-1 or Prime-1 by Moody's or AAA,
AA, SP-1 or A-1 by Standard & Poor's, unrated municipal obligations that, in the
opinion of the  investment adviser,  have credit  characteristics equivalent  to
obligations   rated  as  above,  tax-exempt   obligations  backed  by  the  U.S.
Government, and temporary investments that may be subject to Federal income tax.
 
THE CALIFORNIA FUND
 
    The California Fund has  the objective of  providing, through investment  in
professionally managed portfolios of California municipal obligations, as high a
level  of current interest income exempt from both Federal and California income
taxes as is consistent with the investment policies of each of the portfolios of
the California Fund  and with  preservation of  capital. Each  portfolio of  the
California  Fund may include  temporary investments that may  be subject to tax.
California Unitholders may reinvest in one of three portfolios of the California
Fund: The Nuveen California Tax-Free  Value Fund, the Nuveen California  Insured
Tax-Free Value Fund and the Nuveen California Tax-Free Money Market Fund.
 
    The  Nuveen California  Tax-Free Value  Fund invests  primarily in long-term
investment grade  California tax-exempt  bonds (I.E.,  bonds rated  in the  four
highest  categories by Moody's  or Standard &  Poor's or, if  unrated, that have
equivalent credit characteristics). The Nuveen California Insured Tax-Free Value
Fund invests  primarily in  the same  type of  investments as  the Special  Bond
Portfolio, each of which is covered by insurance guaranteeing the timely payment
of  principal  and  interest  or  is backed  by  a  deposit  of  U.S. Government
securities.
 
    The Nuveen  California  Tax-Free  Money Market  Fund  invests  primarily  in
high-quality  short term  California tax-exempt money  market instruments (I.E.,
obligations rated in the two highest categories by Moody's or Standard &  Poor's
or,  if unrated,  that have  equivalent credit  characteristics). This portfolio
will include  only  obligations  maturing  within one  year  from  the  date  of
acquisition, will maintain an average maturity of all investments of 120 days or
less, will value its portfolio at amortized cost and will seek to maintain a net
asset value of $1.00 per share. The Nuveen California Tax-Free Money Market Fund
provides for an expedited wire redemption privilege.
 
                                      A-24
<PAGE>
THE TAX-FREE BOND FUND
 
    The  Tax-Free Bond Fund consists of  the Nuveen Massachusetts Tax-Free Value
Fund, the Nuveen New  York Tax-Free Value Fund,  the Nuveen Ohio Tax-Free  Value
Fund,  and the Nuveen New  Jersey Tax-Free Value Fund,  which are each available
for reinvestment to Unitholders  who are residents of  the state for which  such
portfolio  is  named. The  Tax-Free Bond  Fund has  the objective  of providing,
through investment in a professionally managed portfolio of municipal bonds,  as
high  a level of current interest income exempt both from Federal income tax and
from the  income  tax  imposed  by  each  portfolio's  designated  state  as  is
consistent  with preservation of capital. The  Tax-Free Bond Fund may include in
each of its  portfolios tax-exempt  bonds rated Baa  or BBB  or better;  unrated
bonds   which,  in   the  opinion  of   the  investment   adviser,  have  credit
characteristics equivalent to  bonds rated  Baa or  BBB or  better; and  certain
temporary  investments, including securities the  interest income from which may
be subject to Federal and state income tax.
 
THE INSURED BOND FUND
 
    The Insured Bond Fund  consists of the Nuveen  Insured Municipal Bond  Fund,
the  Nuveen Massachusetts  Insured Tax-Free Value  Fund and the  Nuveen New York
Insured Tax-Free  Value  Fund, which  are  each available  for  reinvestment  to
Unitholders.  (The Massachusetts and  New York Portfolios  are available only to
those Unitholders who  are residents  of the state  for which  the portfolio  is
named.) The Insured Bond Fund has the objective of providing, through investment
in  professionally managed  portfolios of  municipal bonds,  as high  a level of
current interest income exempt from both Federal income tax and, in the case  of
designated  state portfolios,  from the income  tax imposed  by each portfolio's
designated state, as  is consistent  with preservation of  capital. The  Insured
Bond  Fund may include in each of its portfolios the same type of investments as
the Tax-Free Bond Fund, each of  which is covered by insurance guaranteeing  the
timely  payment of  principal and  interest or  is backed  by a  deposit of U.S.
Government securities.
 
THE MONEY MARKET FUND
 
    The Money Market Fund  consists of the  Nuveen Massachusetts Tax-Free  Money
Market  Fund and the Nuveen New York  Tax-Free Money Market Fund, which are each
available for reinvestment  to Unitholders who  are residents of  the state  for
which  such portfolio is named. The Money Market Fund includes in its portfolios
only obligations  maturing  within  one  year  from  the  date  of  acquisition,
maintains  an average  maturity of  120 days or  less, values  its portfolios at
amortized cost and seeks to maintain a  net asset value of $1.00 per share.  The
Money  Market  Fund  has  the  objective  of  providing,  through  investment in
professionally  managed  portfolios   of  high   quality  short-term   municipal
obligations, as high a level of current interest income exempt both from Federal
income  tax and from the income tax imposed by each portfolio's designated state
as is consistent with stability of  principal and the maintenance of  liquidity.
The  Money  Market  Fund  may  include  in  each  of  its  portfolios  municipal
obligations rated Aaa, Aa, MIG-1, MIG-2, VMIG-1,  VMIG-2, Prime 1 or Prime 2  by
Moody's  or  AAA, AA,  SP-1,  SP-2, A-1  or A-2  by  Standard &  Poor's; unrated
municipal obligations  that, in  the  opinion of  the investment  adviser,  have
credit  characteristics equivalent to obligations  rated as above; and temporary
investments that may be subject to Federal and state income tax.
 
THE MULTISTATE TRUST
 
    The Multistate Trust consists of the Nuveen Arizona Tax-Free Value Fund, the
Nuveen Florida Tax-Free Value Fund, the Nuveen Maryland Tax-Free Value Fund, the
Nuveen Michigan Tax-Free Value Fund, the Nuveen New Jersey Tax-Free Value  Fund,
the  Nuveen Pennsylvania  Tax-Free Value Fund  and the Nuveen  Virginia Tax Free
Value Fund, which are each
 
                                      A-25
<PAGE>
available for reinvestment  to Unitholders who  are residents of  the state  for
which  such  portfolio  is named.  The  Multistate  Trust has  the  objective of
providing, through investment in a professionally managed portfolio of municipal
bonds, as  high a  level of  current interest  income exempt  from both  regular
Federal income tax and the applicable state personal income tax as is consistent
with  preservation of capital. The  Multistate Trust may include  in each of its
portfolios tax-exempt bonds rated "Baa" or "BBB" or better, unrated bonds which,
in the opinion of the investment advisor, have credit characteristics equivalent
to bonds rated  "baa" or "BBB"  or better, limited  to no more  than 20% of  the
Multistate Trust's assets, and certain temporary investments that may be subject
to Federal and state income tax.
 
    Each  person who purchases Units of a  Trust may become a participant in the
Accumulation Plan and elect  to have his  or her distributions  on Units of  the
Trust  invested directly in shares of one of the Accumulation Funds. Reinvesting
Unitholders  may  select  any  interest  distribution  plan.  Thereafter,   each
distribution  of  interest  income  or  principal  on  the  participant's  Units
(principal only in  the case of  a Unitholder  who has chosen  to reinvest  only
principal  distributions) will, on the applicable distribution date, or the next
day on which the New  York Stock Exchange is  normally open ("business day")  if
the  distribution  date is  not  a business  day,  automatically be  received by
Shareholder Services, Inc., transfer agent  for each of the Accumulation  Funds,
on  behalf of such participant  and applied on that  date to purchase shares (or
fractions thereof)  of  the Accumulation  Fund  chosen  at net  asset  value  as
computed  as of 4:00 p.m. eastern time on each such date. All distributions will
be reinvested  in the  Accumulation Fund  chosen  and no  part thereof  will  be
retained  in a separate  account. These purchases  will be made  without a sales
charge.
 
    Shareholder Services, Inc. will mail to each participant in the Accumulation
Plan a quarterly  statement containing  a record of  all transactions  involving
purchases of Accumulation Fund shares (or fractions thereof) with Trust interest
distributions or as a result of reinvestment of Accumulation Fund dividends. Any
distribution  of principal used to purchase  shares of an Accumulation Fund will
be separately  confirmed by  Shareholder Services,  Inc. Unitholders  will  also
receive   distribution  statements  from  the   Trustee  detailing  the  amounts
transferred to their Accumulation Fund accounts.
 
    Participants may at any time, by so notifying the Trustee in writing,  elect
to  change  the  Accumulation  Fund into  which  their  distributions  are being
reinvested, to change from principal  only reinvestment to reinvestment of  both
principal and interest or vice versa, or to terminate their participation in the
Accumulation  Plan altogether and receive future distributions on their Units in
cash. There will be no  charge or other penalty for  such change of election  or
termination.
 
    The  character of  Trust distributions for  income tax  purposes will remain
unchanged even if they are reinvested in an Accumulation Fund.
 
15.  HOW DETAILED ARE REPORTS TO UNITHOLDERS?
 
   
The Trustee  shall furnish  Unitholders of  the Trust  in connection  with  each
distribution,  a statement of the amount of  interest and, if any, the amount of
other receipts (received  since the preceding  distribution) being  distributed,
expressed  in each case  as a dollar  amount representing the  pro rata share of
each Unit  of  the  Trust  outstanding  and  a  year  to  date  summary  of  all
distributions  paid on said Units. Within a  reasonable period of time after the
end of each calendar year, the Trustee  shall furnish to each person who at  any
time  during  the calendar  year  was a  registered  Unitholder of  the  Trust a
statement with respect  to the Trust  (i) as to  the Interest Account:  interest
received  (including amounts representing interest received upon any disposition
of Bonds), and the percentage of such interest by states in which the issuers of
the  Bonds   are   located,   deductions   for  fees   and   expenses   of   the
    
 
                                      A-26
<PAGE>
Trust,  redemption of Units  and the balance  remaining after such distributions
and deductions, expressed in each  case both as a total  dollar amount and as  a
dollar  amount representing the pro  rata share of each  Unit outstanding on the
last business day of such calendar year;  (ii) as to the Principal Account:  the
dates  of  disposition of  any  Bonds and  the  net proceeds  received therefrom
(excluding any  portion  representing accrued  interest),  the amount  paid  for
purchase  of  Replacement  Bonds,  the amount  paid  upon  redemption  of Units,
deductions for payment of applicable taxes and fees and expenses of the Trustee,
and the balance remaining after such distributions and deductions expressed both
as a total dollar amount and as a dollar amount representing the pro rata  share
of each Unit outstanding on the last business day of such calendar year; (iii) a
list  of the Bonds held and the number of Units outstanding on the last business
day of such calendar year; (iv) the  Unit Value based upon the last  computation
thereof  made during  such calendar year;  and (v)  amounts actually distributed
during such  calendar year  from the  Interest Account  and from  the  Principal
Account, separately stated, expressed both as total dollar amounts and as dollar
amounts representing the pro rata share of each Unit outstanding.
 
    Each  annual statement will reflect pertinent  information in respect of all
plans of distribution so that Unitholders may be informed regarding the  results
of other plans of distribution.
 
16.  UNIT VALUE AND EVALUATION
 
   
The value of the Trust is determined by the Sponsor on the basis of (1) the cash
on  hand in the Trust or moneys in the process of being collected, (2) the value
of the Bonds in the Trust based on the BID prices of the Bonds and (3)  interest
accrued  thereon not subject to collection,  LESS (1) amounts representing taxes
or governmental charges payable out of the Trust and (2) the accrued expenses of
the Trust. The result of such computation  is divided by the number of Units  of
the  Trust outstanding as  of the date  thereof to determine  the per Unit value
("Unit Value") of the Trust. The Sponsor may determine the value of the Bonds in
the Trust (1)  on the basis  of current BID  prices of the  Bonds obtained  from
dealers or brokers who customarily deal in bonds comparable to those held by the
Trust, (2) if bid prices are not available for any of the Bonds, on the basis of
bid  prices for comparable  bonds, (3) by causing  the value of  the Bonds to be
determined  by  others  engaged  in  the  practice  of  evaluating,  quoting  or
appraising comparable bonds or (4) by any combination of the above. Although the
Unit  Value of the Trust is based on the  BID prices of the Bonds, the Units are
sold initially to the public at the Public Offering Price based on the  OFFERING
prices of the Bonds.
    
 
   
    Because  the insurance obtained  by the Sponsor  or by the  issuers of Bonds
with respect to  the Bonds in  the Insured Trust  is effective so  long as  such
Bonds  are outstanding, such insurance will be taken into account in determining
the bid and offering prices of such Bonds and therefore some value  attributable
to such insurance will be included in the value of Units of the Trust.
    
 
17.  HOW UNITS OF THE TRUSTS ARE DISTRIBUTED TO THE PUBLIC
 
John Nuveen & Co. Incorporated is the Sponsor and sole Underwriter of the Units.
It  is  the  intention  of  the  Sponsor  to  qualify  Units  of  National, Long
Intermediate, Intermediate, Short  Intermediate and Short  Term Trusts for  sale
under  the laws of  substantially all of  the states, and  Units of State Trusts
only in the state for which the Trust is named and selected other states.
 
   
    Promptly following the deposit of Bonds in exchange for Units of the  Trust,
it  is the practice of the Sponsor to place all of the Units as collateral for a
letter or letters of credit from one or more commercial banks under an agreement
to release such Units from time to  time as needed for distribution. Under  such
an arrangement the Sponsor pays such banks
    
 
                                      A-27
<PAGE>
compensation  based  on  the  then  current  interest  rate.  This  is  a normal
warehousing arrangement during the period of distribution of the Units to public
investors.
 
    The Sponsor plans to allow a  discount to brokers and dealers in  connection
with   the  primary  distribution   of  Units  and   also  in  secondary  market
transactions. The primary market discounts are as follows:
 
<TABLE>
<CAPTION>
                                                         Discount per Unit
                                --------------------------------------------------------------------
<S>                             <C>         <C>            <C>            <C>            <C>
                                 National    Long Inter-                  Short Inter-
                                and State      mediate     Intermediate      mediate     Short Term
Number of Units*                  Trusts       Trusts         Trusts         Trusts        Trusts
- ------------------------------  ----------  -------------  -------------  -------------  -----------
Less than 500.................    $3.20         $2.90          $2.70          $2.00         $1.50
500 but less than 1,000.......     3.20         2.90           2.70           2.00          1.50
1,000 but less than 2,500.....     3.20         2.70           2.50           1.80          1.30
2,500 but less than 5,000.....     3.20         2.45           2.25           1.55          1.05
5,000 but less than 10,000....     2.50         2.45           2.25           1.55          1.05
10,000 but less than 25,000...     2.00         2.00           2.00           1.30           .80
25,000 but less than 50,000...     1.75         1.75           1.75           1.30           .60
50,000 or more................     1.75         1.50           1.50           1.00           .60
</TABLE>
 
*Breakpoint sales charges and related dealer concessions are computed both on  a
 dollar  basis and  on the  basis of  the number  of Units  purchased, using the
 equivalent of 500 Units to  $50,000, 2,500 Units to  $250,000 etc. and will  be
 applied on that basis which is more favorable to the purchaser.
 
   
    The  Sponsor currently intends  to maintain a secondary  market for Units of
the Trust.  See Section  7. The  amount of  the dealer  concession on  secondary
market  purchases of Trust Units through the Sponsor will be computed based upon
the value  of the  Bonds in  the  Trust portfolio,  including the  sales  charge
computed as described in Section 6, and adjusted to reflect the cash position of
the  Trust principal  account, and will  vary with  the size of  the purchase as
shown in the following table:
    
 
<TABLE>
<CAPTION>
                                                               Amount of Purchase*
                            -----------------------------------------------------------------------------------------
<S>                         <C>        <C>        <C>        <C>        <C>        <C>         <C>         <C>
                                        $50,000   $100,000   $250,000   $500,000   $1,000,000  $2,500,000
                              Under       to         to         to         to          to          to      $5,000,000
Years to Maturity            $50,000    $99,999   $249,999   $499,999   $999,999   $2,499,999  $4,999,999   or more
- --------------------------  ---------  ---------  ---------  ---------  ---------  ----------  ----------  ----------
Less than 1...............      0          0          0          0          0          0           0           0
1 but less than 2.........    1.00%      .90%       .85%       .80%       .70%        .55%       .467%       .389%
2 but less than 3.........    1.30%      1.20%      1.10%      1.00%      .90%        .73%       .634%       .538%
3 but less than 4.........    1.60%      1.45%      1.35%      1.25%      1.10%       .90%       .781%       .662%
4 but less than 5.........    2.00%      1.85%      1.75%      1.55%      1.40%      1.25%       1.082%      .914%
5 but less than 7.........    2.30%      2.15%      1.95%      1.80%      1.65%      1.50%       1.320%      1.140%
7 but less than 10........    2.60%      2.45%      2.25%      2.10%      1.95%      1.70%       1.496%      1.292%
10 but less than 13.......    3.00%      2.80%      2.60%      2.45%      2.30%      2.00%       1.747%      1.494%
13 but less than 16.......    3.25%      3.15%      3.00%      2.75%      2.50%      2.15%       1.878%      1.606%
16 or more................    3.50%      3.50%      3.40%      3.35%      3.00%      2.50%       2.185%      1.873%
</TABLE>
 
   
 *Breakpoint sales charges and related dealer concessions are computed both on a
  dollar basis and  on the basis  of the  number of Units  purchased, using  the
  equivalent of 500 Units to $50,000, 2,500 Units to $250,000, etc., and will be
  applied on that basis which is more favorable to the purchaser.
    
 
    The  Sponsor reserves the  right to change  the foregoing dealer concessions
from time to time.
 
   
    Certain commercial banks are  making Units of the  Trust available to  their
customers  on  an agency  basis. A  portion of  the sales  charge paid  by these
customers is retained by or  remitted to the banks in  the amounts shown in  the
above  table.  The Glass-Steagall  Act prohibits  banks from  underwriting Trust
Units; the Act  does, however,  permit certain agency  transactions and  banking
regulators  have not indicated that these particular agency transactions are not
permitted under the Act. In Texas and  in certain other states, any bank  making
Units available must be registered as a broker-dealer under state law.
    
 
    To  facilitate the handling of transactions, sales of Units shall be limited
to transactions involving a minimum of  either $5,000 or 50 Units, whichever  is
less.  The Sponsor reserves the right to reject,  in whole or in part, any order
for the purchase of Units.
 
                                      A-28
<PAGE>
18.  OWNERSHIP AND TRANSFER OF UNITS
 
The ownership of  Units is  evidenced by book  entry positions  recorded on  the
books  and records of the Trustee  unless the Unitholder expressly requests that
the purchased Units be evidenced in Certificate form. The Trustee is  authorized
to treat as the owner of Units that person who at the time is registered as such
on  the books of the Trustee. Any  Unitholder who holds a Certificate may change
to book entry ownership by submitting to the Trustee the Certificate along  with
a written request that the Units represented by such Certificate be held in book
entry form. Likewise, a Unitholder who holds Units in book entry form may obtain
a  Certificate for such  Units by written  request to the  Trustee. Units may be
held in denominations of one Unit or any multiple or fraction thereof. Fractions
of Units are computed to three  decimal places. Any Certificates issued will  be
numbered  serially for identification, and are  issued in fully registered form,
transferable only  on the  books of  the Trustee.  Book entry  Unitholders  will
receive a Book Entry Position Confirmation reflecting their ownership.
 
    Certificates  for  Units will  bear an  appropriate  notation on  their face
indicating which plan of distribution has been selected. When a change is  made,
the   existing  Certificates  must  be  surrendered   to  the  Trustee  and  new
Certificates issued to  reflect the  currently effective  plan of  distribution.
There will be no charge for this service. Holders of book entry Units can change
their  plan of distribution  by making a  written request to  the Trustee, which
will issue a new Book Entry Position Confirmation to reflect such change.
 
   
    Units are transferable by  making a written request  to the Trustee and,  in
the  case of Units  evidenced by Certificate(s),  by presenting and surrendering
such Certificate(s) to the  Trustee, at its corporate  trust office in New  York
City, properly endorsed or accompanied by a written instrument or instruments of
transfer. The Certificate(s) should be sent registered or certified mail for the
protection  of the Unitholder.  Each Unitholder must  sign such written request,
and such Certificate(s) or transfer instrument,  exactly as his name appears  on
(a)  the face of the Certificate(s) representing the Units to be transferred, or
(b) the  Book  Entry  Position  Confirmation(s) relating  to  the  Units  to  be
transferred.  Such signature(s) must be guaranteed  by a guarantor acceptable to
the Trustee. In certain instances  the Trustee may require additional  documents
such  as,  but  not  limited  to,  trust  instruments,  certificates  of  death,
appointments  as  executor  or   administrator  or  certificates  of   corporate
authority.  Mutilated Certificates must  be surrendered to  the Trustee in order
for a replacement Certificate to be issued.
    
 
    Although at the date hereof  no charge is made  and none is contemplated,  a
Unitholder  may be  required to  pay $2.00 to  the Trustee  for each Certificate
reissued or transfer of Units requested and to pay any governmental charge which
may be imposed in connection therewith.
 
REPLACEMENT OF LOST, STOLEN OR DESTROYED CERTIFICATES.
 
    To obtain a  new Certificate replacing  one that has  been lost, stolen,  or
destroyed,   the   Unitholder   must  furnish   the   Trustee   with  sufficient
indemnification and pay such expenses as the Trustee may incur.
 
    The indemnification protects the  Trustee, Sponsor, and  Trust from risk  if
the original Certificate is presented for transfer or redemption by a person who
purchased  it  in good  faith,  for value  and without  notice  of any  fraud or
irregularity.
 
   
    This indemnification  must  be  in the  form  of  an Open  Penalty  Bond  of
Indemnification.  The premium for such  an indemnity bond may  vary from time to
time, but currently amounts to 1% of  the market value of the Units  represented
by  the Certificate.  In the  case however,  of a  Trust as  to which  notice of
termination has been given, the premium currently amounts to 0.5% of the  market
value of the Units represented by such Certificate.
    
 
                                      A-29
<PAGE>
19.  HOW UNITS MAY BE REDEEMED WITHOUT CHARGE
 
Unitholders  may redeem all or a portion of  their Units by (1) making a written
request for such redemption (book entry Unitholders may use the redemption  form
on the reverse side of their Book Entry Position Confirmation) to the Trustee at
its  corporate trust office in New York City (redemptions of 1,000 Units or more
will require a signature  guarantee), (2) in  the case of  Units evidenced by  a
Certificate, by also tendering such Certificate to the Trustee, duly endorsed or
accompanied  by  proper instruments  of transfer  with signatures  guaranteed as
explained in  Section  18 above,  and  (3) payment  of  applicable  governmental
charges,  if any.  Certificates should be  sent only by  registered or certified
mail to minimize  the possibility of  their being  lost or stolen.  In order  to
effect  a  redemption of  Units evidenced  by a  Certificate, a  Unitholder must
tender the Certificate to the Trustee or provide satisfactory indemnity required
in connection with lost, stolen or  destroyed Certificates (See Section 18).  No
redemption  fee will be charged. A Unitholder may authorize the Trustee to honor
telephone instructions for  the redemption  of Units  held in  book entry  form.
Units represented by Certificates may not be redeemed by telephone. The proceeds
of Units redeemed by telephone will be sent by check either to the Unitholder at
the  address specified on his account or to a financial institution specified by
the Unitholder for credit to the account of the Unitholder. A Unitholder wishing
to  use  this  method  of  redemption  must  complete  a  Telephone   Redemption
Authorization  Form and  furnish the Form  to the  Trustee. Telephone Redemption
Authorization  Forms   can   be   obtained  from   a   Unitholder's   registered
representative  or by calling the  Trustee. Once the completed  Form is on file,
the Trustee  will honor  telephone redemption  requests by  any person.  If  the
telephone  redemption request is  received prior to 4:00  p.m. eastern time, the
Unitholder will be  entitled to receive  for each Unit  tendered the  Redemption
Price  as determined above.  A telephone redemption  request received after 4:00
p.m. eastern time will be treated as having been received the following business
day. The redemption proceeds will be mailed within seven calendar days following
the telephone redemption  request. Telephone  redemptions are  limited to  1,000
Units  or less. Only  Units held in the  name of individuals  may be redeemed by
telephone; accounts registered in  broker name, or  accounts of corporations  or
fiduciaries   (including  among  others,   trustees,  guardians,  executors  and
administrators) may not use the telephone redemption privilege.
 
   
    On the seventh calendar day following the date of tender, or if the  seventh
calendar day is not a business day, on the first business day prior thereto, the
Unitholder  will be entitled to receive in cash for each Unit tendered an amount
equal to the Unit Value of the Trust determined by the Trustee, as of 4:00  p.m.
eastern  time on the date of tender  as defined hereafter, plus accrued interest
to, but  not  including,  the  fifth  business day  after  the  date  of  tender
("Redemption  Price"). The  price received upon  redemption may be  more or less
than the amount paid by  the Unitholder depending on the  value of the Bonds  on
the  date of  tender. Such  value will vary  with market  and credit conditions,
including changes in  interest rate  levels. Unitholders should  check with  the
Trustee  or  their broker  to determine  the  Redemption Price  before tendering
Units.
    
 
    While the Trustee has the power to determine Redemption Price when Units are
tendered, the authority has  by practice been delegated  by the Trustee to  John
Nuveen  & Co.  Incorporated, which  determines the  Redemption Price  on a daily
basis.
 
    The "date of  tender" is  deemed to  be the date  on which  the request  for
redemption  of Units is received  in proper form by  the Trustee, except that as
regards a redemption request received after 4:00 p.m. eastern time or on any day
on which the New  York Stock Exchange (the  "Exchange") is normally closed,  the
date  of tender  is the  next day on  which such  Exchange is  normally open for
trading and such request will  be deemed to have been  made on such day and  the
redemption will be effected at the Redemption Price computed on that day.
 
                                      A-30
<PAGE>
   
    Accrued  interest paid  on redemption shall  be withdrawn  from the Interest
Account of  the Trust  or, if  the  balance therein  is insufficient,  from  the
Principal  Account of the Trust.  All other amounts paid  on redemption shall be
withdrawn  from  the  Principal  Account.  The  Trustee  is  empowered  to  sell
underlying  Bonds of the Trust in order  to make funds available for redemption.
(See Section 21.) Units so redeemed shall be cancelled.
    
 
   
    To the extent that Bonds are sold from the Trust, the size and diversity  of
the Trust will be reduced. Such sales may be required at a time when Bonds would
not  otherwise be sold and might result  in lower prices than might otherwise be
realized.
    
 
   
    The Redemption Price is  determined on the  basis of the  BID prices of  the
Bonds  in the Trust,  while the initial  Public Offering Price  of Units will be
determined on the  basis of the  OFFERING prices of  the Bonds as  of 4:00  p.m.
eastern  time on any day on which the  Exchange is normally open for trading and
such determination is made. As of any given time, the difference between the bid
and offering  prices of  such Bonds  may  be expected  to average  1% to  2%  of
principal  amount in the case of Bonds  in National, Long Intermediate and State
Trusts, 3/4%  to  1  1/2% in  the  case  of Bonds  in  Intermediate,  and  Short
Intermediate  Trusts and 1/2% to 3/4% in the case of Bonds in Short Term Trusts.
In the case of actively traded Bonds, the difference may be as little as 1/4  to
1/2  of 1%, and in  the case of inactively  traded Bonds such difference usually
will not exceed 3%. The difference between the aggregate offering prices of  the
Bonds  in the  Trust and the  aggregate bid  prices thereof on  the business day
prior to  the Date  of Deposit  is shown  in the  discussion of  specific  trust
matters.
    
 
    The  right  of redemption  may be  suspended and  payment postponed  for any
period during  which  the Securities  and  Exchange Commission  determines  that
trading  in the municipal bond market is restricted or an emergency exists, as a
result  of  which  disposal  or  evaluation  of  the  Bonds  is  not  reasonably
practicable, or for such other periods as the Securities and Exchange Commission
may by order permit.
 
    Under  regulations issued by the Internal  Revenue Service, the Trustee will
be required to withhold 31% of the principal amount of a Unit redemption if  the
Trustee  has not  been furnished  the redeeming  Unitholder's tax identification
number in the  manner required by  such regulations. Any  amount so withheld  is
transmitted  to  the  Internal  Revenue  Service and  may  be  recovered  by the
Unitholder only when filing  his or her tax  return. Under normal  circumstances
the  Trustee obtains the Unitholder's tax identification number from the selling
broker at the time the Certificate or Book Entry Return Confirmation is  issued,
and  this number is printed on the Certificate or Book Entry Return Confirmation
and on distribution statements. If a Unitholder's tax identification number does
not appear as  described above,  or if it  is incorrect,  the Unitholder  should
contact  the Trustee before redeeming Units to determine what action, if any, is
required to avoid this "back-up withholding."
 
20.  HOW UNITS MAY BE PURCHASED BY THE SPONSOR
 
The Trustee will notify the  Sponsor of any tender  of Units for redemption.  If
the  Sponsor's bid in  the secondary market  at that time  equals or exceeds the
Redemption Price it may purchase such Units by notifying the Trustee before  the
close  of business on the  second succeeding business day  and by making payment
therefor to  the  Unitholder not  later  than the  day  on which  payment  would
otherwise have been made by the Trustee. (See Section 19.) The Sponsor's current
practice  is to bid at the Redemption  Price in the secondary market. Units held
by the Sponsor may be tendered to the Trustee for redemption as any other Units.
 
    The Public Offering  Price upon  resale of any  Units thus  acquired by  the
Sponsor  will be  calculated in accordance  with the procedure  described in the
then currently effective prospectus relating to such Units. Any profit resulting
from the resale of  such Units will  belong to the  Sponsor which likewise  will
bear  any loss resulting from a lower  Public Offering Price or Redemption Price
subsequent to its acquisition of such Units.
 
                                      A-31
<PAGE>
   
21.  HOW BONDS MAY BE REMOVED FROM THE TRUST
    
 
   
Bonds will be  removed from  the Trust  as they mature  or are  redeemed by  the
issuers   thereof.  See  the  "Schedule   of  Investments"  and  "General  Trust
Information" under Section 3  for a discussion of  call provisions of  portfolio
Bonds.
    
 
   
    The  Indenture also empowers  the Trustee to  sell Bonds for  the purpose of
redeeming Units tendered by any Unitholder, and for the payment of expenses  for
which  income may not be available. Under the Indenture the Sponsor is obligated
to provide the Trustee with a current list  of Bonds in the Trust to be sold  in
such  circumstances. In deciding which Bonds  should be sold the Sponsor intends
to consider, among  other things, such  factors as: (1)  market conditions;  (2)
market  prices  of  the  Bonds;  (3)  the  effect  on  income  distributions  to
Unitholders of the sale of various Bonds; (4) the effect on principal amount  of
underlying  Bonds  per Unit  of the  sale  of various  Bonds; (5)  the financial
condition of the issuers; and (6) the effect of the sale of various Bonds on the
investment character of the Trust. Such sales, if required, could result in  the
sale  of Bonds by the Trustee at prices less than original cost to the Trust. To
the extent Bonds are sold, the size and diversity of such Trust will be reduced.
    
 
    In addition, the  Sponsor is empowered  to direct the  Trustee to  liquidate
Bonds upon the happening of certain other events, such as default in the payment
of principal and/or interest, an action of the issuer that will adversely affect
its  ability to continue payment of the  principal of and interest on its Bonds,
or an  adverse  change  in  market, revenue  or  credit  factors  affecting  the
investment  character of the Bonds. If a default in the payment of the principal
of and/or interest  on any  of the  Bonds occurs, and  if the  Sponsor fails  to
instruct  the Trustee whether to  sell or continue to  hold such Bonds within 30
days after  notification by  the Trustee  to the  Sponsor of  such default,  the
Indenture  provides that  the Trustee shall  liquidate said  Bonds forthwith and
shall not be liable for any loss so incurred.
 
    In connection with its  determination as to the  sale or liquidation of  any
Bonds,  the Sponsor  will consider the  Bond's then current  rating, but because
such ratings are the opinions of the rating agencies as to the quality of  Bonds
they  undertake to rate and not absolute  standards of quality, the Sponsor will
exercise its independent judgment as to Bond creditworthiness.
 
   
    The Sponsor may also direct the Trustee  to liquidate Bonds in the Trust  if
the  Bonds in  the Trust  are the  subject of  an advanced  refunding, generally
considered to be when  refunding bonds are issued  and the proceeds thereof  are
deposited  in irrevocable trust to retire the refunded Bonds on their redemption
date.
    
 
   
    Except as stated in Section 4 regarding the limited right of substitution of
Replacement Bonds for Failed Bonds, and except for refunding securities that may
be exchanged for Bonds under certain conditions specified in the Indenture,  the
Indenture  does  not permit  either the  Sponsor  or the  Trustee to  acquire or
deposit bonds either in addition  to, or in substitution  for, any of the  Bonds
initially deposited in the Trust.
    
 
22.  INFORMATION ABOUT THE TRUSTEE
 
   
The Trustee is United States Trust Company of New York, with its principal place
of  business at 114 West 47th Street, New York, New York 10036 and its corporate
trust office at  770 Broadway,  New York, New  York 10003.  United States  Trust
Company  of New York, established in  1853, has, since its organization, engaged
primarily in the  management of trust  and agency accounts  for individuals  and
corporations. The Trustee is a member of the New York Clearing House Association
and  is subject to supervision and examination by the Superintendent of Banks of
the State of New York, the  Federal Deposit Insurance Corporation and the  Board
of  Governors of the Federal Reserve System.  In connection with the storage and
handling of  certain Bonds  deposited in  the  Trust, the  Trustee may  use  the
services   of  The  Depository  Trust  Company.  These  services  would  include
safekeeping of the Bonds and
    
 
                                      A-32
<PAGE>
coupon-clipping,  computer  book-entry   transfer  and  institutional   delivery
services.  The  Depository  Trust Company  is  a limited  purpose  trust company
organized under  the Banking  Law of  the State  of New  York, a  member of  the
Federal  Reserve System  and a clearing  agency registered  under the Securities
Exchange Act of 1934.
 
LIMITATIONS ON LIABILITIES OF SPONSOR AND TRUSTEE
 
    The Sponsor and the Trustee shall  be under no liability to Unitholders  for
taking  any action or for  refraining from any action  in good faith pursuant to
the Indenture, or for errors in judgment, but shall be liable only for their own
negligence, lack of good faith or  willful misconduct. The Trustee shall not  be
liable for depreciation or loss incurred by reason of the sale by the Trustee of
any  of the Bonds. In the  event of the failure of  the Sponsor to act under the
Indenture, the Trustee may act thereunder and shall not be liable for any action
taken by it in good faith under the Indenture.
 
   
    The Trustee shall not be liable for any taxes or other governmental  charges
imposed  upon or in respect of the Bonds or upon the interest thereon or upon it
as Trustee under  the Indenture or  upon or in  respect of the  Trust which  the
Trustee  may be required  to pay under any  present or future  law of the United
States of  America or  of any  other taxing  authority having  jurisdiction.  In
addition,  the  Indenture  contains  other  customary  provisions  limiting  the
liability of the Trustee.
    
 
SUCCESSOR TRUSTEES AND SPONSORS
 
    The Trustee or any successor trustee  may resign by executing an  instrument
of resignation in writing and filing same with the Sponsor and mailing a copy of
a  notice of resignation to all Unitholders  then of record. Upon receiving such
notice, the Sponsor is required to promptly appoint a successor trustee. If  the
Trustee becomes incapable of acting or is adjudged a bankrupt or insolvent, or a
receiver  or other public officer shall take  charge of its property or affairs,
the  Sponsor  may  remove  the  Trustee  and  appoint  a  successor  by  written
instrument.  The resignation or  removal of a  trustee and the  appointment of a
successor trustee shall become effective only when the successor trustee accepts
its appointment as such. Any successor trustee shall be a corporation authorized
to exercise  corporate  trust  powers, having  capital,  surplus  and  undivided
profits of not less than $5,000,000. Any corporation into which a trustee may be
merged  or with which it may be  consolidated, or any corporation resulting from
any merger or consolidation to  which a trustee shall be  a party, shall be  the
successor trustee.
 
    If  upon resignation of  a trustee no  successor has been  appointed and has
accepted the appointment within 30 days after notification, the retiring trustee
may apply  to  a  court of  competent  jurisdiction  for the  appointment  of  a
successor.
 
   
    If the Sponsor fails to undertake any of its duties under the Indenture, and
no  express  provision is  made for  action by  the Trustee  in such  event, the
Trustee may, in addition to its other  powers under the Indenture (1) appoint  a
successor sponsor or (2) terminate the Indenture and liquidate the Trust.
    
 
23.  INFORMATION ABOUT THE SPONSOR
 
John Nuveen & Co. Incorporated, the Sponsor and Underwriter, was founded in 1898
and  is  the oldest  and  largest investment  banking  firm specializing  in the
underwriting and distribution of tax-exempt securities and maintains the largest
research department in the investment  banking community devoted exclusively  to
the  analysis of municipal securities. In  1961 the Sponsor began sponsoring the
Nuveen Tax-Exempt Unit Trust and, since this  time, it has issued more than  $30
billion  in tax-exempt unit trusts, including over $8 billion in insured trusts.
The Sponsor is  also principal underwriter  of the Nuveen  Municipal Bond  Fund,
Inc.,  the Nuveen Tax-Exempt Money Market  Fund, Inc., Nuveen Tax-Free Reserves,
Inc., Nuveen California Tax-Free  Fund, Inc., Nuveen  Tax-Free Bond Fund,  Inc.,
Nuveen
 
                                      A-33
<PAGE>
Insured  Tax-Free Bond Fund,  Inc. and Nuveen Tax-Free  Money Market Fund, Inc.,
all  registered  open-end   management  investment  companies,   and  acted   as
co-managing  underwriter of Nuveen Municipal Value Fund, Inc., Nuveen California
Municipal Value Fund, Inc., Nuveen New  York Municipal Value Fund, Inc.,  Nuveen
Municipal  Income  Fund, Inc.,  Nuveen California  Municipal Income  Fund, Inc.,
Nuveen New York  Municipal Income  Fund, Inc., Nuveen  Premium Income  Municipal
Fund,  Inc.,  Nuveen Performance  Plus Municipal  Fund, Inc.,  Nuveen California
Performance  Plus  Municipal  Fund,  Inc.,  Nuveen  New  York  Performance  Plus
Municipal  Fund, Inc., Nuveen  Municipal Advantage Fund,  Inc., Nuveen Municipal
Market Opportunity Fund,  Inc., Nuveen California  Municipal Market  Opportunity
Fund,  Inc., Nuveen  New York  Municipal Market  Opportunity Fund,  Inc., Nuveen
Investment Quality Municipal  Fund, Inc., Nuveen  California Investment  Quality
Municipal  Fund, Inc., Nuveen New York  Investment Quality Municipal Fund, Inc.,
Nuveen Insured Quality Municipal Fund,  Inc., Nuveen Florida Investment  Quality
Municipal  Fund, Nuveen  Pennsylvania Investment Quality  Municipal Fund, Nuveen
New Jersey  Investment  Quality Municipal  Fund,  Inc., and  the  Nuveen  Select
Quality  Municipal Fund, Inc.,  Nuveen California Quality  Municipal Fund, Inc.,
Nuveen New  York Select  Quality  Municipal Fund,  Inc., Nuveen  Quality  Income
Municipal  Fund, Inc., Nuveen  Insured Municipal Opportunity  Fund, Inc., Nuveen
Florida Quality Income Municipal Fund, Nuveen Michigan Quality Income  Municipal
Fund,  Inc., Nuveen New Jersey Quality  Income Municipal Fund, Inc., Nuveen Ohio
Quality  Income  Municipal  Fund,  Inc.,  Nuveen  Pennsylvania  Quality   Income
Municipal  Fund, Nuveen Texas  Quality Income Municipal  Fund, Nuveen California
Quality Income Municipal Fund,  Inc., Nuveen New  York Quality Income  Municipal
Fund,  Inc., Nuveen Premier  Insured Municipal Income  Fund, Inc., Nuveen Select
Tax Free Income  Portfolio, Nuveen Select  Tax Free Income  Portfolio 2,  Nuveen
Insured  California Select  Tax-Free Income  Portfolio, Nuveen  Insured New York
Select Tax-Free Income Portfolio, Nuveen Premium Income Municipal Fund 2,  Inc.,
Nuveen  Select Tax Free  Income Portfolio 3,  Nuveen Select Maturities Municipal
Fund, Nuveen Select Tax Free Income Portfolio 4, Nuveen Premium Income Municipal
Fund 3, Inc.,  Nuveen Insured  California Premium Income  Municipal Fund,  Inc.,
Nuveen  Arizona  Premium Income  Municipal  Fund, Inc.,  Nuveen  Insured Premium
Income Municipal Fund,  Inc., Nuveen  Insured Florida  Premium Income  Municipal
Fund,  Nuveen Michigan  Premium Income Municipal  Fund, Inc.,  Nuveen New Jersey
Premium Income  Municipal Fund,  Inc., Nuveen  Insured New  York Premium  Income
Municipal  Fund, Inc., Nuveen  Ohio Premium Income  Municipal Fund, Inc., Nuveen
Pennsylvania  Premium  Income  Municipal  Fund,  Nuveen  Texas  Premium   Income
Municipal   Fund,  Nuveen  Premium   Income  Municipal  Fund   4,  Inc.,  Nuveen
Pennsylvania Premium Income  Municipal Fund  2, Nuveen  Insured Florida  Premium
Income  Municipal Fund 2, Nuveen Maryland  Premium Income Municipal Fund, Nuveen
Virginia Premium  Income Municipal  Fund,  Nuveen Massachusetts  Premium  Income
Municipal Fund, Nuveen Insured California Premium Income Municipal Fund 2, Inc.,
Nuveen  Insured  New York  Premium Income  Municipal Fund  2, Nuveen  New Jersey
Premium Income  Municipal Fund  2, Nuveen  Washington Premium  Income  Municipal
Fund,  Nuveen Michigan  Premium Income Municipal  Fund 2,  Nuveen Premium Income
Municipal Fund 5, Nuveen Georgia Premium Income Municipal Fund, Nuveen  Missouri
Premium Income Municipal Fund, Nuveen Connecticut Premium Income Municipal Fund,
Nuveen  North Carolina Premium Income Municipal  Fund, Nuveen New Jersey Premium
Income Municipal Fund 3,  Nuveen Florida Premium  Income Municipal Fund,  Nuveen
New  York  Premium  Income  Municipal  Fund,  Nuveen  California  Premium Income
Municipal Fund,  Nuveen Pennsylvania  Premium Income  Municipal Fund  3,  Nuveen
Maryland  Income Municipal Fund 2, Nuveen Virginia Premium Income Municipal Fund
2, Nuveen Ohio Premium  Income Municipal Fund 2,  Nuveen Insured Premium  Income
Municipal  Fund 2,  Nuveen California  Premium Income  Municipal Fund  2, Nuveen
Premium Income  Municipal Fund  6, registered  closed-end management  investment
companies.   These  registered  open-end  and  closed-end  investment  companies
currently have  approximately  $32.8  billion  in  tax-exempt  securities  under
management.  Nationwide, more than 1,000,000 individual investors have purchased
Nuveen's tax exempt trusts and funds.  The present corporation was organized  in
1967 as a wholly-owned subsidiary of Nuveen
 
                                      A-34
<PAGE>
   
Corporation,  successor to the original  John Nuveen & Co.  founded in 1898 as a
sole proprietorship  and  incorporated in  1953.  In  1974, John  Nuveen  &  Co.
Incorporated became a wholly-owned subsidiary of The St. Paul Companies, Inc., a
financial services management company located in St. Paul, Minnesota. On May 19,
1992,  common shares comprising  a minority interest in  The John Nuveen Company
("JNC"), a newly organized corporation which holds all of the shares of  Nuveen,
were  sold to the general public in an initial public offering. St. Paul retains
a controlling interest in JNC  with over 70% of JNC's  shares. The Sponsor is  a
member  of  the  National  Association  of  Securities  Dealers,  Inc.  and  the
Securities Industry Association and has its principal offices located in Chicago
(333 W. Wacker Drive) and New York  (Swiss Bank Tower, 10 East 50th Street).  It
maintains 14 regional offices.
    
 
24.  OTHER INFORMATION
AMENDMENT OF INDENTURE
 
   
    The  Indenture may  be amended  by the Trustee  and the  Sponsor without the
consent of any of  the Unitholders (1)  to cure any ambiguity  or to correct  or
supplement  any provision thereof which may be defective or inconsistent, or (2)
to make such  other provisions as  shall not adversely  affect the  Unitholders,
provided,  however, that the Indenture may not be amended to increase the number
of Units in the Trust or to permit the deposit or acquisition of bonds either in
addition to, or in substitution for any of the Bonds initially deposited in  the
Trust  except as stated in Section 4 regarding the limited right of substitution
of Replacement Bonds and  except for the substitution  of refunding bonds  under
certain circumstances. The Trustee shall advise the Unitholders of any amendment
promptly after execution thereof.
    
 
TERMINATION OF INDENTURE
 
   
    The  Trust may be liquidated  at any time by written  consent of 100% of the
Unitholders or by  the Trustee  when the  value of the  Trust, as  shown by  any
evaluation,  is less than 20% of the  original principal amount of the Trust and
will be  liquidated  by  the Trustee  in  the  event that  Units  not  yet  sold
aggregating  more  than 60%  of the  Units originally  created are  tendered for
redemption by the Sponsor thereby  reducing the net worth  of the Trust to  less
than  40%  of the  principal amount  of  the Bonds  originally deposited  in the
portfolio. (See "Essential Information Regarding the Trust.") The sale of  Bonds
from  the Trust upon  termination may result  in realization of  a lesser amount
than might otherwise be realized  if such sale were  not required at such  time.
For  this  reason,  among  others,  the amount  realized  by  a  Unitholder upon
termination  may  be  less  than  the  principal  amount  of  Bonds   originally
represented  by the Units held by  such Unitholder. The Indenture will terminate
upon the redemption, sale or other disposition of the last Bond held thereunder,
but in no event shall it continue beyond the end of the calendar year  preceding
the fiftieth anniversary of its execution for National Trusts, beyond the end of
the  calendar year preceding the twentieth anniversary of its execution for Long
Intermediate, and Intermediate  Trusts or beyond  the end of  the calendar  year
preceding  the tenth  anniversary of  its execution  for Short  Intermediate and
Short Term Trusts.
    
 
    Written notice of  any termination  specifying the  time or  times at  which
Unitholders  may surrender their Certificates, if any, for cancellation shall be
given by  the  Trustee  to each  Unitholder  at  the address  appearing  on  the
registration  books of the Trust maintained  by the Trustee. Within a reasonable
time thereafter the Trustee shall liquidate any Bonds in the Trust then held and
shall deduct  from  the assets  of  the Trust  any  accrued costs,  expenses  or
indemnities  provided  by  the  Indenture which  are  allocable  to  such Trust,
including estimated compensation of the Trustee and costs of liquidation and any
amounts required as a reserve to provide for payment of any applicable taxes  or
other  governmental charges. The Trustee shall then distribute to Unitholders of
such Trust their pro  rata share of  the balance of  the Interest and  Principal
Accounts. With such distribution the Unitholders shall be
 
                                      A-35
<PAGE>
furnished  a final distribution statement, in substantially the same form as the
annual distribution statement, of the amount distributable. At such time as  the
Trustee  in its sole discretion shall determine that any amounts held in reserve
are no longer necessary,  it shall make distribution  thereof to Unitholders  in
the same manner.
 
LEGAL OPINION
 
    The legality of the Units offered hereby has been passed upon by Chapman and
Cutler,  111  West Monroe  Street, Chicago,  Illinois  60603. Carter,  Ledyard &
Milburn, 2 Wall Street, New York, New  York 10005, has acted as counsel for  the
Trustee with respect to the Series, and, in the absence of a New York Trust from
the Series, as special New York tax counsel for the Series.
 
AUDITORS
 
   
    The  Statement of Condition  and Schedule of Investments  at Date of Deposit
included in  this  Prospectus  have  been audited  by  Arthur  Andersen  &  Co.,
independent public accountants, as indicated in their report in this Prospectus,
and  are included herein in reliance upon  the authority of said firm as experts
in giving said report.
    
 
                                      A-36
<PAGE>
                            DESCRIPTION OF RATINGS*
 
    STANDARD & POOR'S CORPORATION.  A  description of the applicable Standard  &
Poor's Corporation rating symbols and their meanings follows:
 
    A  Standard & Poor's rating is  a current assessment of the creditworthiness
of an obligor with  respect to a specific  debt obligation. This assessment  may
take into consideration obligors such as guarantors, insurers or lessees.
 
    The  rating is not  a recommendation to  purchase, sell or  hold a security,
inasmuch as  it  does not  comment  as to  market  price or  suitability  for  a
particular investor.
 
    The  ratings are  based on  current information  furnished by  the issuer or
obtained by Standard & Poor's from other sources it considers reliable. Standard
& Poor's does not  perform an audit  in connection with any  rating and may,  on
occasion,  rely on unaudited financial information.  The ratings may be changed,
suspended or withdrawn  as a result  of changes in,  or unavailability of,  such
information, or for other circumstances.
 
    The ratings are based, in varying degrees, on the following considerations:
 
     I.  Likelihood  of default--capacity and  willingness of the  obligor as to
         the timely payment of interest and repayment of principal in accordance
         with the terms of the obligation;
 
     II.  Nature of and provisions of the obligation;
 
    III.  Protection afforded by,  and relative position  of, the obligation  in
          the  event of  bankruptcy, reorganization or  other arrangements under
          the laws of bankruptcy and other laws affecting creditors' rights.
 
    AAA--This is the  highest rating  assigned by Standard  & Poor's  to a  debt
obligation. Capacity to pay interest and repay principal is extremely strong.
 
    AA--Bonds  rated AA have  a very strong  capacity to pay  interest and repay
principal, and differ from the highest rated issues only in small degree.
 
    A--Bonds rated A have a strong capacity to pay interest and repay principal,
although they are somewhat more susceptible to the adverse effects of changes in
circumstances and economic conditions than bonds in higher rated categories.
 
    BBB--Bonds rated BBB  are regarded  as having  an adequate  capacity to  pay
interest  and repay principal. Whereas they normally exhibit adequate protection
parameters, adverse  economic  conditions  or changing  circumstances  are  more
likely  to lead to a  weakened capacity to pay  interest and repay principal for
bonds in this category than for bonds in the higher rated categories.
 
    Plus (+) or Minus (-): The ratings from "AA" to "BB" may be modified by  the
addition  of a  plus or minus  sign to  show relative standing  within the major
rating categories.
 
    Provisional  Ratings:  The   letter  "p"  indicates   that  the  rating   is
provisional.  A  provisional rating  assumes  the successful  completion  of the
project being financed by  the issuance of the  bonds being rated and  indicates
that  payment of debt service requirements is largely or entirely dependent upon
the successful and timely completion of the project. This rating, however, while
addressing credit  quality subsequent  to completion  of the  project, makes  no
comment  on the  likelihood of,  or the  risk of  default upon  failure of, such
completion. Accordingly,  the investor  should exercise  his own  judgment  with
respect to such likelihood and risk.
 
- ----------
*As published by the rating companies.
 
                                      A-37
<PAGE>
    Note  Ratings:  A  Standard  & Poor's  note  rating  reflects  the liquidity
concerns and market access risks unique to  notes. Notes due in 3 years or  less
will  likely receive  a note  rating. Notes  maturing beyond  3 years  will most
likely receive a long-term debt rating.
 
    Note rating symbols are as follows:
 
        SP-1  Very strong  or strong  capacity to  pay principal  and  interest.
              Those   issues   determined   to   possess   overwhelming   safety
              characteristics will be given a plus (+) designation.
 
        SP-2  Satisfactory capacity to pay principal and interest.
 
RATINGS OF INSURED TRUST UNITS.
 
    A Standard  &  Poor's  Corporation's  rating on  the  units  of  an  insured
investment  trust (hereinafter referred to collectively as "units" and "trusts")
is a current assessment of creditworthiness with respect to the investment  held
by  such trust. This assessment takes  into consideration the financial capacity
of the  issuers and  of any  guarantors, insurers,  lessees or  mortgagors  with
respect to such investments. The assessment, however, does not take into account
the  extent to which trust  expenses or portfolio asset  sales for less than the
trust purchase price will reduce payment  to the unitholder of the interest  and
principal  required to be paid on the  portfolio assets. In addition, the rating
is not a recommendation to purchase, sell or hold units, inasmuch as the  rating
does not comment as to market price of the units or suitability for a particular
investor.
 
    Units rated "AAA" are composed exclusively of assets that are rated "AAA" by
Standard  &  Poor's and/or  certain  short-term investments.  Standard  & Poor's
defines its  AAA  rating for  such  assets as  the  highest rating  assigned  by
Standard  & Poor's  to a  debt obligation.  Capacity to  pay interest  and repay
principal is very strong.  However, unit ratings may  be subject to revision  or
withdrawal  at any time by Standard & Poor's and each rating should be evaluated
independently of any other rating.
 
    MOODY'S INVESTORS  SERVICE, INC.    A brief  description of  the  applicable
Moody's Investors Service, Inc. rating symbols and their meanings follows:
 
    Aaa--Bonds which are rated Aaa are judged to be the best quality. They carry
the  smallest degree of investment  risk and are generally  referred to as "gilt
edge." Interest payments are protected by a large or by an exceptionally  stable
margin and principal is secure. While the various protective elements are likely
to  change, such changes  as can be  visualized are most  unlikely to impair the
fundamentally strong position of such issues. Their safety is so absolute  that,
with  the  occasional  exception  of oversupply  in  a  few  specific instances,
characteristically, their  market  value  is affected  solely  by  money  market
fluctuations.
 
    Aa--Bonds  which  are rated  Aa  are judged  to be  of  high quality  by all
standards. Together with the Aaa group they comprise what are generally known as
high grade bonds. They are  rated lower than the  best bonds because margins  of
protection  may  not  be  as  large as  in  Aaa  securities  or  fluctuations of
protective elements may be of greater  amplitude or there may be other  elements
present  which  make the  long-term  risks appear  somewhat  larger than  in Aaa
securities. Their  market value  is virtually  immune to  all but  money  market
influences,  with  the  occasional exception  of  oversupply in  a  few specific
instances.
 
    A--Bonds which are rated A possess many favorable investment attributes  and
are  to be considered as upper medium grade obligations. Factors giving security
to principal and interest are considered  adequate, but elements may be  present
which  suggest a susceptibility to impairment sometime in the future. The market
value of A-rated bonds may be
 
                                      A-38
<PAGE>
influenced to some degree by economic  performance during a sustained period  of
depressed  business conditions, but,  during periods of  normalcy, A-rated bonds
frequently move in  parallel with Aaa  and Aa obligations,  with the  occasional
exception of oversupply in a few specific instances.
 
    Moody's  bond rating  symbols may contain  numerical modifiers  of a generic
rating classification. The modifier 1 indicates that the bond ranks at the  high
end  of its  category; the  modifier 2  indicates a  mid-range ranking;  and the
modifier 3 indicates that the issue ranks in the lower end of its generic rating
category.
 
    Baa--Bonds which are rated Baa  are considered as medium grade  obligations,
i.e.,  they are neither  highly protected nor  poorly secured. Interest payments
and principal security appear  adequate for the  present but certain  protective
elements  may be lacking or may  be characteristically unreliable over any great
length of time. Such  bonds lack outstanding  investment characteristics and  in
fact  have speculative  characteristics as well.  The market  value of Baa-rated
bonds is more  sensitive to changes  in economic circumstances,  and aside  from
occasional  speculative factors applying to some bonds of this class, Baa market
valuations move in  parallel with Aaa,  Aa and A  obligations during periods  of
economic normalcy, except in instances of oversupply.
 
    Con.  (--)--Bonds for which the security depends upon the completion of some
act or the  fulfillment of  some condition  are rated  conditionally. These  are
bonds  secured by (a)  earnings of projects under  construction, (b) earnings of
projects unseasoned  in  operation  experience, (c)  rentals  which  begin  when
facilities are completed, or (d) payments to which some other limiting condition
attaches.  Parenthetical rating denotes probable  credit stature upon completion
of construction or elimination of basis of condition.
 
    Note Ratings:
 
    MIG 1--This designation  denotes  best  quality.  There  is  present  strong
           protection  by established cash flows,  superior liquidity support or
           demonstrated broad-based access to the market for refinancing.
 
    MIG 2--This designation  denotes high  quality.  Margins of  protection  are
           ample although not so large as in the preceding group.
 
                                      A-39
<PAGE>
                      (THIS PAGE INTENTIONALLY LEFT BLANK)
 
                                      A-40
<PAGE>
                      (THIS PAGE INTENTIONALLY LEFT BLANK)
 
                                      A-41
<PAGE>
                      (THIS PAGE INTENTIONALLY LEFT BLANK)
 
                                      A-42
<PAGE>
 
<TABLE>
<C>                <S>        <C>
           NUVEEN             Tax-Exempt Unit Trusts
                           PROSPECTUS
                           100,000 Units
                           National Insured Trust 267
</TABLE>
 
<PAGE>
 
<TABLE>
<C>                 <S>        <C>
            NUVEEN             Tax-Exempt Unit Trusts
           Sponsor             John Nuveen & Co. Incorporated
                               333 West Wacker Drive
                               Chicago, IL 60606-1286
                               Telephone: 312.917.7700
                               Swiss Bank Tower
                               10 East 50th Street
                               New York, NY 10022
                               212.207.2000
           Trustee             United States Trust Company
                               of New York
                               770 Broadway
                               New York, NY 10003
                               800.257.8787
     Legal Counsel             Chapman and Cutler
        to Sponsor             111 West Monroe Street
                               Chicago, IL 60603
       Independent             Arthur Andersen & Co.
            Public             33 West Monroe Street
       Accountants             Chicago, IL 60603
     for the Trust
</TABLE>
 
   Except as to statements made herein furnished by the Trustee, the Trustee has
   assumed  no responsibility for the accuracy, adequacy and completeness of the
   information contained in this Prospectus.
                   This Prospectus does not contain  all of the information  set
   forth in the registration statement and exhibits relating thereto, filed with
   the   Securities  and  Exchange  Commission,   Washington,  D.C.,  under  the
   Securities Act of 1933, and to which reference is made.
                   No person is authorized  to give any  information or to  make
   representations  not contained in  this Prospectus or  in supplementary sales
   literature prepared by the Sponsor, and any information or representation not
   contained therein must not be relied upon as having been authorized by either
   the Trust, the Trustee or the Sponsor. This Prospectus does not constitute an
   offer to sell, or a solicitation of an offer to buy, securities in any  State
   to  any person to whom it is not lawful to make such offer in such state. The
   Trust is registered as a Unit  Investment Trust under the Investment  Company
   Act  of 1940. Such registration  does not imply that the  Trust or any of its
   Units has been guaranteed, sponsored,  recommended or approved by the  United
   States or any State or agency or officer thereof.
 
   
   723
    
 
<PAGE>

Statement of differences between electronic filing and printed document.
   Pursuant to Rule 499(c) (7) under the Securities Act of 1933 and Rule
20-11 under the Investment Company Act of 1940, Registrant hereby identifies
those differences in the foregoing document between the electronic format in
which it is filed and the printed form in which it will be circulated:
   (1) The printed and distributed prospectus may be paged differently
because the printed document may contain a different amount of information on
each page from that contained in the electronic transmission.
   (2) On the cover page, in the index and on the last page of the printed
document, solid vertical bars will appear.
   (3) In the printed document, footnote symbols may include a "dagger" or
multiple "dagger".  The "dagger" symbol is represented as # in the electronic
document.
   (4) The printed and distributed prospectus will not  contain the
preliminary prospectus legend included at the beginning of the first
prospectus page.


<PAGE>

                       CONTENTS OF REGISTRATION STATEMENT

A.  BONDING ARRANGEMENTS OF DEPOSITOR:

    The Depositor has obtained  the following Stockbrokers Blanket Bonds
for its officers, directors and employees:

    INSURER/POLICY NO.                                     AMOUNT

    United Pacific Insurance Co.                           $10,000,000
    Reliance Insurance Company
    B 74 92 20

    Aetna Casualty and Surety                              $10,000,000
    08 F10618BCA

    St. Paul Insurance Co.                                 $ 6,000,000
    400 HC 1051

B.  This amendment of Registration Statement comprises the following papers 
and documents:

              The facing sheet
              The Prospectus

              The signatures

              Consents of Independent Public
              Accountants and Counsel as indicated

              Exhibits as listed on page S-5


<PAGE>

                                   SIGNATURES

    Pursuant to the requirements of the Securities Act of 1933, the
Registrant, Nuveen Tax-Exempt Unit Trust, Series 723 has duly caused this
Amendment of Registration Statement to be signed on its behalf by the
undersigned thereunto duly authorized in the City of Chicago and State of
Illinois on 4/08/94.

 
                                NUVEEN TAX-EXEMPT UNIT TRUST, SERIES 723
                                (Registrant)

                                By JOHN NUVEEN & CO. INCORPORATED
                                (Depositor)


                       
                                By: Larry Woods Martin
                                    _________________________________
                                    Vice President


                        
                           Attest:  Morrison C. Warren
                                    __________________________________
                                    Assistant Secretary


<PAGE>

    Pursuant to the requirements of the Securities Act of 1933, this Amendment
of Registration Statement has been signed below by the following persons in 
the capacities and on the dates indicated:


    SIGNATURE                     TITLE*                       DATE

Richard J. Franke       Chairman, Board of Directors  )
                        Chief Executive Officer and   )
                        Director                      )
                                                      )
Donald E. Sveen         President, Chief Operating    )
                        Officer and Director          )
                                                      )
                                             
Anthony T. Dean         Executive Vice President      ) Larry Woods Martin
                        and Director                  ) Attorney-In-Fact**
                                                      )
Timothy T. Schwertfeger Executive Vice President      )
                        and Director                  )

O. Walter Renfftlen     Vice President and Controller )
                        (Principal Accounting Officer))
                                                      )
                                                      )4/08/94
___________________

*The titles of the persons named herein represent their capacity in and
relationship to John Nuveen & Co. Incorporated, the Depositor.

**The powers of attorney were filed on Form SE for Messrs. Franke, 
Sveen, Renfftlen, Dean and Schwertfeger with the Amendment to the 
Registration Statement on Form S-6 of Nuveen Tax-Exempt Unit Trust, 
Series 671 (File No. 33-49175). 



<PAGE>

723

                   CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS

    As independent public accountants, we hereby consent to the use of our
report and to all references to our Firm included in or made a part of this
Registration Statement.

                                 
                                            Arthur Andersen & Company
Chicago, Illinois
4/08/94


                         CONSENT OF CHAPMAN AND CUTLER

    The consent of Chapman and Cutler to the use of its name in the Prospectus
included in the Registration Statement is contained in its opinions filed by
this amendment as Exhibits 3.1 and 3.2.

                   CONSENT OF STANDARD + POOR'S CORPORATION

    The consent of Standard + Poor's Corporation to the use of its name in
the Prospectus included in the Registration Statement is filed by this
amendment as Exhibit 4.1 to the Registration Statement.

                   CONSENT OF KENNY S+P EVALUATION SERVICES

    The consent of Kenny S+P Evaluation Services to the use of its name in the
Prospectus included in the Registration Statement is filed by this amendment 
as Exhibit 4.2 to the Registration Statement.

                      CONSENT OF CARTER, LEDYARD & MILBURN

    The consent of Carter, Ledyard & Milburn to the use of its name in the
Prospectus included in the Registration Statement is filed by this amendment 
as Exhibit 4.3 to the Registration Statement.

<PAGE>

                                LIST OF EXHIBITS


1.1 (a)  Copy of Trust Indenture and Agreement between John Nuveen &
         Co. Incorporated, Depositor, and United States Trust Company of
         New York, Trustee.

1.1 (b)  Schedules to the Trust Indenture and Agreement.

2.1      Copy of Certificate of Ownership (Included in Exhibit 1.1(a) on
         pages 2 to 8, inclusive, and incorporated herein by reference).

3.1      Opinion of counsel as to legality of securities being registered.

3.2      Opinion of counsel as to Federal income tax status of securities
         being registered.

4.1      Consent of Standard + Poor's Corporation.

4.2      Consent of Kenny S+P Evaluation Services.

4.3      Consent of Carter, Ledyard & Milburn.



<PAGE>

   
                                                Exhibit 1.1(a)
    




                                    
                                    
                                    
                                    
                      NUVEEN TAX-EXEMPT UNIT TRUST
                                    
                                    
                                    
                                    
                                    
                                    
                     ______________________________
                                    
                                    
                      TRUST INDENTURE AND AGREEMENT
                                    
                                 Between
                                    
                     JOHN NUVEEN & CO. INCORPORATED
                                         As Depositor
                                    
                                   And
                                    
                       UNITED STATES TRUST COMPANY
                               OF NEW YORK
                                        As Trustee
                                    
                                    
                     ______________________________


<PAGE>

                    TRUST INDENTURE AND AGREEMENT
                     NUVEEN TAX-EXEMPT UNIT TRUST
                          TABLE OF CONTENTS
<TABLE>
<CAPTION>
SECTION                       HEADING                                     PAGE
<C>                         <S>                                           <C>

PREAMBLES.....................................................................1
   Form of Certificates ......................................................2
   Form of Assignment.........................................................6
   Statement Regarding Distributions - Trusts other than Compound 
     Interest Trusts..........................................................6
ARTICLE I         DEFINITIONS.................................................7
ARTICLE II        DEPOSIT OF BONDS; ACCEPTANCE OF TRUST; FORM AND
                  ISSUANCE OF CERTIFICATES; INSURED TRUST BOND
                  INSURANCE..................................................11
   Section 2.01.    Deposit of Bonds.........................................11
   Section 2.02.    Acceptance of Trust......................................11
   Section 2.03.    Issue of Certificates and Establishment of Book Entry 
                    Positions................................................11
   Section 2.04.    Separate Trusts..........................................11
   Section 2.05.    Form of Certificates.....................................12
   Section 2.06.    Insured Trust Bond Insurance.............................12
ARTICLE III       ADMINISTRATION OF FUND.....................................13
   Section 3.01.    Initial Cost.............................................13
   Section 3.02.    Interest Account.........................................13
   Section 3.03.    Principal Account........................................13
   Section 3.04.    Reserve Account..........................................13
   Section 3.05.    Distributions............................................14
   Section 3.06.    Distribution Statements..................................18
   Section 3.07.    Sale of Bonds............................................19
   Section 3.08.    Refunding Bonds..........................................21
   Section 3.09.    Bond Counsel.............................................21
   Section 3.10.    Notice and Sale by Trustee...............................21
   Section 3.11.    Trustee Not to Amortize..................................22
   Section 3.12.    Liability of Depositor...................................22
   Section 3.13.    Notice to Depositor......................................22
   Section 3.14.    Limited Replacement of Special Bonds.....................22
</TABLE>
                                -i-

<PAGE>
<TABLE>
<C>                  <S>                                                  <C>
ARTICLE IV        EVALUATION, REDEMPTION, PURCHASE, TRANSFER OR INTERCHANGE
                  OF UNITS AND REPLACEMENT OF CERTIFICATES...................24
   Section 4.01.    Evaluation...............................................24
   Section 4.02.    Redemptions by Trustee; Purchases by Depositor...........25
   Section 4.03.    Transfer or Interchange of Units.........................27
   Section 4.04.    Certificates Mutilated, Destroyed, Stolen or Lost........28
   Section 4.05.    Compensation of Depositor................................29
ARTICLE V         TRUSTEE....................................................29
   Section 5.01.    General Definition of Trustee's Liabilities, Rights and 
                    Duties...................................................29
   Section 5.02.    Books, Records and Reports...............................32
   Section 5.03.    Indenture and List of Bonds on File......................32
   Section 5.04.    Compensation.............................................32
   Section 5.05.    Removal and Resignation of Trustee; Successor............33
   Section 5.06.    Qualifications of Trustee................................35
ARTICLE VI        RIGHTS OF UNITHOLDERS......................................35
   Section 6.01.    Beneficiaries of Trust...................................35
   Section 6.02.    Rights, Terms and Conditions.............................35
ARTICLE VII       ADDITIONAL COVENANTS; MISCELLANEOUS PROVISIONS.............36
   Section 7.01.    Amendments...............................................36
   Section 7.02.    Termination..............................................36
   Section 7.03.    Construction.............................................38
   Section 7.04.    Registration of Units....................................38
   Section 7.05.    Written Notice...........................................38
   Section 7.06.    Severability.............................................38
   Section 7.07.    Dissolution of Depositor Not to Terminate................38
EXECUTION....................................................................40
CERTAIN INFORMATION..................................................Schedule A
BONDS INITIALLY DEPOSITED............................Schedule B thru Schedule Q
</TABLE>
                         __________________________
           This Contents does not constitute part of the Indenture.

                                 -ii-
<PAGE>
     TRUST  INDENTURE  AND AGREEMENT dated as of the  date  indicated  in
Item 2  of Schedule A hereto, between JOHN NUVEEN & CO. INCORPORATED,  as
Depositor, and UNITED STATES TRUST COMPANY OF NEW YORK, as Trustee.

     WITNESSETH that:

     WHEREAS,  it is desired to expand the market for certain obligations
the  interest income on which is not includible in gross income  pursuant
to  the applicable provisions of the United States Internal Revenue  Code
of   1986  or  pursuant  to  other  provisions  of  law,  some  of  which
obligations, as individual issues or parts thereof, might be  unavailable
or  impracticable as investments to certain individual investors, and  to
provide proper diversification to such investors, particularly those with
limited investment capital; and

     WHEREAS,  the  Depositor desires to provide for the  collection  and
distribution of the principal of and interest on such obligations by  the
Trustee  to  such  persons  as shall purchase  an  interest  therein,  as
hereinafter provided; and

     WHEREAS,  the  Depositor  has acquired and,  concurrently  with  the
execution  and delivery hereof, has deposited in trust with  the  Trustee
the Tax-exempt bonds and/or evidences of ownership interests in principal
and/or interest payments on such Tax-exempt bonds (the "BONDS") listed in
the  Schedules  attached  hereto  (or  delivery  statements  relating  to
contracts  for  the  purchase thereof), which  Schedules  set  forth  the
respective portfolios of the Nuveen Tax-Exempt Unit Trust of that  Series
indicated in Item 1 of Schedule A hereto hereinafter referred to  as  the
National Traditional Trust, the Long Intermediate Traditional Trust,  the
Intermediate Traditional Trust, the Short Intermediate Traditional Trust,
the  Short  Term  Traditional  Trust, the Compound  Interest  Traditional
Trust,  the National Insured Trust, the Long Intermediate Insured  Trust,
the Intermediate Insured Trust, the Short Intermediate Insured Trust, the
Short  Term Insured Trust and individual trusts consisting of  Bonds  the
interest  on  which  is exempt from certain taxation in  specific  states
("[State] Traditional Trust" or "[State] Intermediate Traditional  Trust"
or  "[State]  Insured Trust" or "[State] Intermediate Insured  Trust"  or
"[State]  Short Intermediate Insured Trust"), or any one or two  of  such
Trusts, included in the Fund, such Trusts being created hereunder and  to
be  held  by the Trustee in separate Trusts upon the terms and conditions
hereinafter set forth for the use and benefit of all owners of  units  of
the  respective Trusts of the Nuveen Tax-Exempt Unit Trust of that Series
indicated  in  Item 1  of  Schedule A  hereto  (hereinafter  called   the
"UNITS"); and

     WHEREAS, concurrently with the delivery to the Trustee of the  Bonds
listed in the Schedules attached hereto, the Insurer has delivered to and
deposited  with  the Trustee, a Municipal Bond Fund Insurance  Policy  or
Policies  to  protect  each  Insured Trust and  the  Unitholders  thereof
against  nonpayment of principal and interest when due  on  any  Bond  or
Bonds; and

   
     WHEREAS, concurrently with the receipt of the aforesaid deposit  the
Trustee has registered on the registration books of the respective  Trust
    

<PAGE>
   
the ownership of The Depository Trust Company of a number of  Units  con-
stituting the ownership of all Units  of  fractional  undivided  interest
in  such  Bonds  and  in the respective Interest Accounts  and  Principal
Accounts  maintained  under  this Indenture  in  the  manner  hereinafter
provided, and has caused such Units to  be  credited  at  The  Depository
Trust Company to the account of the Depositor, and will, upon receipt  of
confirmation of the  effectiveness  of the  registration  of  the  afore-
mentioned  Units  with  the  Securities  and  Exchange  Commission, cause
such Units to be transferred on the registration books of the  respective
Trusts to such other names, and in such denominations, as  the  Depositor
may direct, and  will  deliver  certificates  evidencing  the  same, upon
request, as hereinafter provided; and
    

     WHEREAS, for those Units which at any time or from time to time  may
be  held  in certificated form, the form of the certificates of ownership
in  the  respective  Trusts ("CERTIFICATES") shall  be  substantially  as
follows:

Number                                                Units
                    CERTIFICATE OF OWNERSHIP          Plan of
                                                      Distribution:
                         --Evidencing--               Monthly
                                                      Quarterly
                     An Undivided Interest            Semi-Annual
                                                      Not Applicable
                           --in the--                 CUSIP ____
                               
                               
                      NUVEEN TAX-EXEMPT UNIT TRUST,
                SERIES [the Series as indicated in Item 1
                     of Schedule A to the Indenture]
                   _________________________ Trust ___

     This  is to certify that _______________________________________  is
the  owner  and  registered  holder of this  Certificate  evidencing  the
ownership of ______ unit(s) of undivided interest ("UNITS") in the  above
Trust (herein called the "TRUST") of the related Series of the Nuveen Tax-
Exempt Unit Trust created by the Trust Indenture and Agreement pertaining
to  such Series (hereinafter called the "INDENTURE"), between JOHN NUVEEN
& CO. INCORPORATED (hereinafter called the "DEPOSITOR") and UNITED STATES
TRUST  COMPANY OF NEW YORK (hereinafter called the "TRUSTEE").  The Trust
consists of:  (1) such of the Bonds deposited in Trust and listed in  the
appropriate Schedule to the Indenture and any other obligations that  may
be  deposited in the Trust in exchange or substitution therefor by reason
of  replacement  of  failed  contracts or refunding  of  the  obligations
initially  deposited, in accordance with the Indenture, as may from  time
to  time  continue to be held as part of the Trust, (2) with  respect  to
Insured  Trusts,  contracts  or policies of insurance  purchased  by  the
Depositor  from  Municipal Bond Investors Assurance Corporation  and  (3)
such  cash  amounts  as  from time to time may be held  in  the  Interest
Account and the Principal Account maintained under the Indenture  in  the
manner described below.

     At  any  given  time this Certificate shall represent  a  fractional
undivided interest in the Trust, the numerator of which fraction shall be
the  number of full and fractional Units set forth on the face hereof and
the  denominator of which shall be the total number of Units of undivided
fractional interest of the Trust which are outstanding at such time.

                                   -2-
<PAGE>
     The Depositor hereby grants and conveys all of its rights, title and
interest  in  and to the Trust to the extent of the fractional  undivided
interest  represented hereby to the registered holder of this Certificate
subject  to  and in pursuance of the Indenture, all the terms, conditions
and  covenants of which are incorporated herein as if fully set forth  at
length.

     The  registered holder of the Units represented by this  Certificate
is entitled at any time upon tender of this Certificate to the Trustee at
its  corporate trust office in the City of New York, and upon payment  of
any tax or other governmental charges, to receive on the seventh calendar
day  following the day on which such tender is made, or, if such calendar
day  is  not  a  business day, on the first business day  prior  to  such
calendar  date,  an amount in cash equal to the value  of  the  Units  of
fractional undivided interest in the Trust evidenced by this Certificate,
upon  the  basis provided for in the Indenture.  The right of  redemption
may  be suspended and the date of payment may be postponed for any period
during  which  the New York Stock Exchange is closed or trading  on  that
Exchange  is restricted, for any period during which an emergency  exists
so  that  disposal of the obligations held in the Trust is not reasonably
practicable  or it is not reasonably practicable fairly to determine  the
value  of  such obligations, or for such other periods as the  Securities
and Exchange Commission may by order permit.





     Interest  received  by the Trustee as part of the  Trust  (including
interest accrued and unpaid prior to the day of deposit of any obligation
in  the  Trust  and  that part of the proceeds of the sale,  liquidation,
redemption  or  maturity of any such obligation  or  from  any  insurance
thereon which represents accrued interest but not accrued original  issue
discount,  if  any)  shall  be credited by the Trustee  to  the  Interest
Account.    The  fractional  undivided  interest  represented   by   this
Certificate in the balance in the Interest Account (after the  deductions
referred to below) shall be computed as of the date of the Indenture  and
paid  on such date.  The next computation shall be made as of the  "First
General  Record  Date"  as  defined in the Indenture  and  thereafter  in
accordance  with the plan of distribution shown above.  For Trusts  other
than Compound Interest Trusts, an amount in cash equal to said fractional
undivided  interest in the Interest Account shall be distributed  on  the
fifteenth  day of the month in which each such computation  is  made,  or
within  a  reasonable period of time thereafter, to or upon the order  of
the registered holder of the Units represented by this Certificate at the
close  of  business  on  the  first  day  of  the  month  in  which  such
distribution is made.

     All moneys (other than interest) received by the Trustee as part  of
the  Trust  (including original issue discount and amounts received  from
the sale, liquidation, redemption or maturity of any obligations held  in
the Trust or from any insurance thereon) shall be credited by the Trustee
to  a  separate  Principal  Account.  The fractional  undivided  interest
represented  by  this Certificate in the cash balance  in  the  Principal
Account (after the deductions referred to below) shall be computed as  of
the  applicable Record Dates as defined in the Indenture  in  each  year,
commencing with the first such date occurring subsequent to the  date  of
the  Indenture.   An  amount in cash equal to said  undivided  fractional

                                   -3-
<PAGE>
interest  in the Principal Account shall be distributed on the  fifteenth
day of the months in which the Record Dates occur, or within a reasonable
period  of time thereafter, to or upon the order of the registered holder
of  the Units represented by this Certificate at the close of business on
the  first  day  of the month in which such distribution  is  made.   The
Trustee  shall not be required to make a distribution from the  Principal
Account  unless  the cash balance on deposit therein available  for  such
distribution  shall  be sufficient to distribute at least  10  cents  per
Unit.

     Distributions from the Interest and Principal Accounts shall be made
by  mail at the post office address of the holder hereof appearing in the
registration books of the Trustee or otherwise as directed by the holder.

     From time to time deductions shall be made from the Interest Account
and  Principal  Account, as more fully set forth in  the  Indenture,  for
redemptions,  compensation  of  the  Trustee,  reimbursement  of  certain
expenses  incurred by or on behalf of the Trustee, certain legal expenses
and  payment of or the establishment of a reserve for, applicable  taxes,
if any.


     Within  a  reasonable period of time after the end of each  calendar
year  the  Trustee shall furnish to the registered holder  of  the  Units
represented  by this Certificate a statement setting forth,  among  other
things,  the  amounts received and deductions therefrom and  the  amounts
distributed  during  the preceding year in respect of  interest  on,  and
sales,  redemptions  or maturities of, and proceeds  from  insurance  on,
obligations held in the Trust.

     The  Units represented by this Certificate shall be transferable  by
the  registered  holder  hereof by presentation  and  surrender  of  this
Certificate  at  the  corporate  trust office  of  the  Trustee  properly
endorsed on the reverse hereof or accompanied by a written instrument  or
instruments of transfer in form satisfactory to the Trustee and  executed
by the registered holder hereof or his authorized attorney.  Certificates
are interchangeable for (i) one or more Certificates or (ii) a Book Entry
Position, in each case in an equal aggregate number of Units of undivided
interest in denominations of a single Unit of undivided interest  or  any
multiple  and  fraction  thereof, all  in  the  manner  provided  in  the
Indenture.

     The  holder  hereof  may be required to pay a charge  of  $2.00  per
Certificate issued in connection with the transfer or interchange of  the
Units  represented by this Certificate and any tax or other  governmental
charge  that  may be imposed in connection with the transfer, interchange
or other surrender of this Certificate.

     The  holder of the Units represented by this Certificate, by  virtue
of  the acceptance of this Certificate, assents to and shall be bound  by
the  terms of the Indenture, a copy of which is on file and available for
inspection  at  the  corporate trust office  of  the  Trustee,  to  which
reference is made for all the terms, conditions and covenants thereof.

     The  Trustee  may  deem  and treat the person  in  whose  name  this
Certificate is registered upon the books of the Trustee as the  owner  of
the  Units  represented  by this Certificate for  all  purposes  and  the
Trustee shall not be affected by any notice to the contrary.


                                   -4-
<PAGE>
     The  Trust  shall terminate upon the maturity, redemption,  sale  or
other disposition of the last bond held therein, PROVIDED, HOWEVER,  that
in  no  event shall the Trust continue beyond the date specified  in  the
Indenture.  The Indenture also provides that the Trust may be  terminated
at  any time by the written consent of One hundred per cent (100%) of the
Unitholders of the Trust and under certain circumstances which include  a
decrease in the value of the Trust to less than Twenty per cent (20%)  of
the  aggregate principal amount of bonds initially deposited in the Trust
or  a  redemption by the Depositor of Units not theretofore  sold  in  an
amount  aggregating more than Sixty per cent (60%) of the initial  number
of  Units thereby reducing the net worth of the Trust to less than  Forty
per  cent  (40%)  of  the aggregate principal amount of  bonds  initially
deposited  in  the Trust.  Upon any termination the Trustee  shall  fully
liquidate the bonds then held, if any, and distribute pro rata the  funds
then  held  in the Trust upon surrender of the Units, all in  the  manner
provided  in  the  Indenture.  No such distribution shall  be  made  with
respect  to  Units represented by a Certificate until surrender  of  such
Certificate.   Upon termination, the Trustee shall be  under  no  further
obligation with respect to the Trust, except to hold the funds  in  trust
without  interest until distribution as aforesaid and shall have no  duty
upon  any  such termination to communicate with the holder  hereof  other
than  by mail at the address of such holder appearing on the registration
books of the Trustee.

     This  Certificate shall not become valid or binding for any  purpose
until properly executed by the Trustee under the Indenture.

     IN  WITNESS WHEREOF, John Nuveen & Co. Incorporated has caused  this
Certificate to be executed in facsimile by its Chairman of the Board  and
United  States  Trust Company of New York, as Trustee,  has  caused  this
Certificate to be executed manually or in facsimile in its corporate name
by an authorized officer.


     Date:                            JOHN NUVEEN & CO. INCORPORATED,
                                      DEPOSITOR
                               
                               
                                    By_______________________________
                                         Chairman of the Board
                               
                               
                                    UNITED STATES TRUST COMPANY OF NEW
                                       YORK, TRUSTEE
                               
                               
                                    By_______________________________
                                          Authorized Officer

                                   -5-
<PAGE>
                           FORM OF ASSIGNMENT

     For  Value Received _________________________________ hereby  sells,
assigns   and   transfers   unto  _________________________   the   Units
represented  by  the  within  Certificate  and  does  hereby  irrevocably
constitute  and appoint _________________________ attorney,  to  transfer
the  Units  represented by the within Certificate on  the  books  of  the
Trustee, with full power of substitution in the premises.

     Date:
                               

STATEMENT  REGARDING DISTRIBUTIONS - TRUSTS OTHER THAN COMPOUND  INTEREST
TRUSTS

     On  the  face  of  this  Certificate it  is  indicated  whether  the
registered  holder hereof has elected to receive distributions  from  the
Interest Account monthly, quarterly or semi-annually.

     This  Certificate  by  its terms provides that  (after  the  initial
computation and payment on the date of the Indenture) distributions  from
the  Interest  Account shall be computed as of the First  General  Record
Date,  and thereafter in accordance with the plan of distribution chosen,
and  an  amount  in  cash  equal to the share  of  the  Interest  Account
represented by this Certificate distributed on the fifteenth day of  each
month in which such computation is made, or within a reasonable period of
time  thereafter, to or upon the order of the registered holder  of  this
Certificate  at the close of business on the first day of  the  month  in
which the distribution is made.

     All  Unitholders  of  record  on  the  First  General  Record  Date,
regardless of the plan of distribution selected, will receive  the  first
distribution  to  be  made  and thereafter  distributions  will  be  made
monthly,  quarterly  or  semi-annually,  depending  upon  the   plan   of
distribution chosen by the holder hereof.

     If   monthly   distributions  have  been  selected,  the  fractional
undivided interest represented by this Certificate in the balance in  the
Interest  Account, after the first distribution and after the  deductions
referred to in the Certificate, will be computed as of the first  day  of
each  month  of each year, commencing with the first such day  after  the
First   General  Record  Date,  and  subsequent  to  the  date  of   this
Certificate,  and  an amount in cash as thus computed distributed  to  or
upon  the  order of the holder hereof at such date of computation  (which
also  is  the Record Date) on or shortly after the fifteenth day of  each
month.

     If  quarterly  distributions  have  been  selected,  the  fractional
undivided interest represented by this Certificate in the balance in  the
Interest  Account, after the first distribution and after the  deductions
referred  to  in the Certificate, will be computed quarterly  as  of  the
quarterly Record Dates in each year, commencing with the first  such  day
after  the First General Record Date and subsequent to the date  of  this
                                   -6-
<PAGE>
Certificate,  and  an amount in cash as thus computed distributed  to  or
upon  the  order of the holder hereof at such date of computation  (which
also  is  the Record Date) on or shortly after the fifteenth day of  each
month in which such computation is made.

     If  semi-annual  distributions have been  selected,  the  fractional
undivided interest represented by this Certificate in the balance in  the
Interest  Account, after the first distribution and after the  deductions
referred to in the Certificate will be computed semi-annually as  of  the
semi-annual Record Dates in each year, commencing with the first such day
after  the First General Record Date and subsequent to the date  of  this
Certificate,  and  an amount in cash as thus computed distributed  to  or
upon  the  order of the holder hereof at such date of computation  (which
also  is  the Record Date) on or shortly after the fifteenth day of  each
month in which such computation is made.


     The  plan of distribution chosen by the registered holder hereof may
be  changed by written notice to the Trustee, by surrender to the Trustee
of  this  Certificate.  A plan of distribution shall continue  in  effect
until  changed  as herein provided.  A change in a plan  of  distribution
will be effective as of the day following the semi-annual Record Date  if
made by such Record Date.

     In  the  event the amount on deposit in the Interest Account is  not
sufficient for the payment of the amount of interest to be distributed to
Unitholders  participating in a distribution, the Trustee  shall  advance
its  own  funds and cause to be deposited in and credited to the Interest
Account  such  amounts  as  may be required  to  permit  payment  of  the
distribution  to be made and shall be entitled to be reimbursed,  without
interest, out of interest received by the Fund subsequent to the date  of
such  advance  and  subject to the condition that any such  reimbursement
shall be made only under conditions which will not reduce the funds in or
available  for the Interest Account to an amount less than  required  for
the  next ensuing distribution of interest.  Distributions to Unitholders
who  are  participating in one of the optional plans for distribution  of
interest shall not be affected because of advancements by the Trustee for
the purpose of equalizing distributions to Unitholders participating in a
different plan.

     NOW,  THEREFORE, in consideration of the premises and of the  mutual
agreements  herein  contained, the Depositor and  the  Trustee  agree  as
follows:
                               
                               
                                ARTICLE I
                               
                               
                               DEFINITIONS

SECTION 1.01.   Whenever used in this Indenture the following  words  and
phrases,  unless the context clearly indicates otherwise, shall have  the
following meanings:

          (1)    "BONDS"  shall mean such of the Tax-exempt  Obligations,
     including, the delivery statements relating to contracts (which  may
     include  "when-issued  contracts"), if  any,  for  the  purchase  of
     certain  bonds and certified or bank check or checks  or  letter  of

                                   -7-
<PAGE>
     credit  or  letters of credit sufficient in amount and  availability
     required  for  such  purchase, deposited in  irrevocable  trust  and
     listed in the Schedules attached hereto, and any obligation received
     in  exchange  for an obligation originally so deposited pursuant  to
     the  terms thereof such that without exception every holder  of  the
     originally deposited obligation must exchange such obligation  at  a
     date  not determined by the holder for a new obligation of the  same
     maturity  and  bearing  the same interest  rate  as  the  originally
     deposited  obligation, and any obligation received  in  exchange  or
     substitution for such obligations pursuant to Sections 3.08 or  3.14
     hereof,  as may from time to time continue to be held as a  part  of
     the Trust Fund.

          (2)    "BOOK  ENTRY DEALER" shall mean those dealers  including
     banks,  trust  companies  and other investment  advisers  for  whose
     customers   the   Depositor  executes  and  confirms   trades,   and
     broker/dealers  that  clear trades in Units through  the  Depositor,
     through  whom purchasers of Units will automatically be  book  entry
     Unitholders.

          (3)   "BOOK ENTRY POSITION" shall mean any position in Units of
     a  Trust  which  ownership is recorded on the books of  the  Trustee
     which  notation  evidences  ownership  of  an  undivided  fractional
     Interest in a Trust in book entry form.

          (4)    "BOOK ENTRY POSITION CONFIRMATION" shall mean the notice
     sent  out  by the Depositor to a purchaser of Units through  a  Book
     Entry Dealer, or a Unitholder who converts certificated Units  to  a
     Book Entry Position which confirms such purchase or conversion.

          (5)    "BOOK ENTRY UNITHOLDER" shall mean the registered holder
     of  any Book Entry Position as recorded on the books of the Trustee,
     his  legal  representatives  and heirs and  the  successors  of  any
     corporation, partnership or other legal entity which is a registered
     holder  of  any Book Entry Position and as such shall  be  deemed  a
     beneficiary  of the related Trust created by this Indenture  to  the
     extent of his pro rata share thereof.

          (6)   "BUSINESS DAY" shall mean any day other than a Sunday or,
     in  the  City of New York, a legal holiday or a day on which banking
     institutions are authorized by law to close.

          (7)    "CERTIFICATE"  shall mean any one  of  the  certificates
     executed by the Trustee and the Depositor evidencing ownership of an
     undivided fractional interest in a Trust.

          (8)  "CERTIFICATED UNITHOLDER" shall mean the registered holder
     of  any  Certificate, his legal representatives and  heirs  and  the
     successors  of  any corporation, partnership or other  legal  entity
     which is a registered holder of any Certificate and as such shall be
     deemed  a beneficiary of the related Trust created by this Indenture
     to the extent of his pro rata share thereof.

                                   -8-
<PAGE>
          (9)   "DEPOSITOR" shall mean John Nuveen & Co. Incorporated and
     its   successors  in  interest,  or  any  successor   depositor   as
     hereinafter provided for.


         (10)    "ELIGIBLE BOOK ENTRY UNITHOLDER" shall have the  meaning
     ascribed to such term in Section 4.02 of this Indenture.

         (11)   "INDENTURE" shall mean this Trust Indenture and Agreement
     as originally executed or, if amended as hereinafter provided, as so
     amended.

         (12)  "INSURANCE" shall mean the contract or contracts or policy
     or  policies of insurance guaranteeing the payment when due  of  the
     principal  of and interest on the Bonds (except Bonds held  pursuant
     and  subject  to  this  Indenture which are  insured  by  individual
     policies  of  insurance  issued  by  the  Municipal  Bond  Insurance
     Association  ("MBIA")  or  the Municipal  Bond  Investors  Assurance
     Corporation  (the  "CORPORATION") which have been  obtained  by  the
     issuers  or  underwriters of such Bonds (the  "PRE-INSURED  BONDS"))
     held  pursuant  and  subject to this Indenture,  together  with  the
     proceeds, if any, thereof payable to or received by the Trustee  for
     the  benefit  of  each Insured Trust in the Fund and the  respective
     Unitholders thereof.


          (13)  "INSURED TRUST" shall mean any separate trust created  by
     this  Indenture, each Bond contained in the portfolio  of  which  is
     either a Pre-Insured Bond or guaranteed by insurance obtained by the
     Depositor from the Insurer.

          (14)    "INSURER"  shall  mean  the  Municipal  Bond  Investors
     Assurance  Corporation  (the  "CORPORATION"),  its  successors   and
     assigns,  having its headquarters in Armonk, New York,  and  issuing
     the  contracts or policies of insurance protecting the owners of the
     Bonds  against  nonpayment  when due of the  principal  thereof  and
     interest thereon (except for Pre-Insured Bonds).

          (15)  "NEW BONDS" shall have the meaning ascribed to such  term
     in Section 3.14 of this Indenture.

          (16)   "SPECIAL BONDS" shall have the meaning ascribed to  such
     term in Section 3.14 of this Indenture.

         (17)  "STRIPPED OBLIGATION" shall mean a certificate, receipt or
     other  evidence  of ownership with respect to either  the  principal
     amount  of  or  an installment of interest payable on  a  Tax-exempt
     Obligation.

         (18)    "TAX-EXEMPT  OBLIGATION" shall include  interest-bearing
     obligations,  Zero Coupon Obligations and Stripped Obligations,  the
     interest  income and/or accrued original issue discount on which  is
     not  includible in the determination of gross income  under  federal
     income tax law.

                                   -9-
<PAGE>
         (19)   "TELEPHONE REDEMPTION AUTHORIZATION FORM" shall mean  any
     form  approved  by  the  Trustee for use by Book  Entry  Unitholders
     redeeming 1,000 Units or less.

         (20)   "TRADITIONAL TRUST" shall mean any Trust which is not  an
     Insured Trust.

         (21)    "TRUST"  or  "TRUSTS" shall mean the separate  trust  or
     trusts  created  by  this  Indenture,  the  Bonds  constituting  the
     portfolios  of  which are listed in the various  separate  Schedules
     attached hereto.

         (22)    "TRUSTEE" shall mean United States Trust Company of  New
     York, or any successor trustee as hereinafter provided for.

         (23)   "TRUST FUND" shall mean the collective Trusts created  by
     this  Indenture, which shall consist of all the Bonds held  pursuant
     and  subject  to  this  Indenture together  with  all  undistributed
     interest  received  or accrued thereon, and any  undistributed  cash
     realized from the sale, redemption, liquidation, or maturity thereof
     or  the  proceeds  of insurance received in respect  thereof.   Such
     amounts  as  may  be  on deposit in the Reserve Account  hereinafter
     established shall be excluded from the Trust Fund.

         (24)    "UNIT" in respect of any Trust shall mean the fractional
     undivided  interest  in and ownership of the  Trust  equal  to  that
     fraction  of the respective Trust such that 1 shall be the numerator
     and  the number of Units as indicated in Item 4 of Schedule A hereto
     shall  be  the  denominator,  said denominator  of  which  shall  be
     decreased  by the number of any such Units redeemed as  provided  in
     Section 4.02.


         (25)   "UNITHOLDER" shall mean any Book Entry Unitholder or  any
     Certificated Unitholder.

         (26)   "ZERO COUPON OBLIGATION" shall mean a bond which does not
     provide for the payment of any current interest.

         (27)    Words importing singular number shall include the plural
     number in each case and vice versa, and words importing person shall
     include corporations and associations, as well as natural persons.

         (28)    The  words  "HEREIN",  "HEREBY",  "HEREWITH",  "HEREOF",
     "HEREINAFTER", "HEREUNDER", "HEREINABOVE", "HEREAFTER", "HERETOFORE"
     and  similar  words  or phrases of reference and  association  shall
     refer to this Indenture in its entirety.

                                   -10-
<PAGE>

                            ARTICLE II
        DEPOSIT OF BONDS; ACCEPTANCE OF TRUST; FORM AND ISSUANCE
              OF CERTIFICATES; INSURED TRUST BOND INSURANCE

SECTION 2.01.   DEPOSIT OF BONDS:  The Depositor, concurrently  with  the
execution  and delivery hereof, has deposited with the Trustee  in  trust
the Bonds listed in the Schedules attached to this Indenture (or delivery
statements relating to contracts for the purchase thereof) in bearer form
or  duly endorsed in blank or accompanied by all necessary instruments of
assignment and transfer in proper form to be held, managed and applied by
the Trustee as herein provided.  If the seller in any contract to buy any
such  Bonds  fails to perform for any reason beyond the  control  of  the
Depositor  and the Depositor does not obtain these Bonds from  any  other
source,  the  Depositor  shall  forthwith give  the  Trustee  the  Failed
Contract  Notice  as defined in Section 3.14 and may  take  the  remedial
action specified in said Section 3.14.

SECTION 2.02.    ACCEPTANCE  OF TRUST:  The Trustee  hereby  accepts  the
trust  herein created for the use and benefit of the Unitholders  in  the
Trusts, subject to the terms and conditions of this Indenture.

   
SECTION 2.03.    ISSUE OF CERTIFICATES AND ESTABLISHMENT  OF  BOOK  ENTRY
POSITIONS:   The  Trustee  hereby acknowledges  receipt  of  the  deposit
referred to in Section 2.01, and simultaneously with the receipt of  said
deposit,  will register on the registration books of the Trust, for  each
of the monthly, quarterly, and  semi-annual  plans  of  distribution, the
ownership by The Depository Trust Company of all Units of each Trust, and
will cause such Units to be credited at The Depository Trust  Company  to
the account of the Depositor. The Trustee shall not cause  such  Units to
be transferred on the registration books of the Trust to a  holder  other
than the Depositor, and the Depositor shall not sell, pledge, hypothecate
or  otherwise  transfer  such  Units, prior  to  the effectiveness of the
registration statement covering the Units filed with the  Securities  and
Exchange  Commission  under  the  Securities Act of 1933, except that the
Depositor may place the Units  as  security  for  any  letter  of  credit
provided in  connection  with  the  deposit  of  contracts  described  in
Section 2.01.
    

     Upon  the  sale of Units to a purchaser, the Units will be evidenced
by  a  Book Entry Position unless such purchaser expressly requests  that
the  purchased Units be evidenced in Certificate form.  Upon sale of  the
Units to a purchaser who requests Units in certificated form, the Trustee
shall  issue  a Certificate or Certificates in the name of the  purchaser
and  note that such Unitholder is a Certificated Unitholder on the  books
of the Trustee.

SECTION 2.04.    SEPARATE TRUSTS:  The Trusts created by  this  Indenture
are  separate and distinct trusts for all purposes and the assets of  one
trust  may  not be commingled with the assets of any other nor shall  the
expenses  of  any  trust be charged against the other.  The  Certificates
and/or  Book  Entry  Positions representing the  ownership  of  Units  of
undivided fractional interest in one Trust shall not be exchangeable  for
certificates or book entry positions representing ownership of  Units  of
undivided fractional interest in any other Trust.

                                   -11-
<PAGE>
SECTION 2.05.    FORM OF CERTIFICATES:  Each Certificate referred  to  in
Section 2.03  is,  and each Certificate hereafter  issued  shall  be,  in
substantially  the  form  hereinabove  recited,  numbered  serially   for
identification, in fully registered form, transferable only on the  books
of  the  Trustee  as  herein provided, executed  either  manually  or  in
facsimile by an authorized officer of the Trustee and in facsimile by the
Chairman  of  the Board, President or one of the Vice Presidents  of  the
Depositor  and dated the date of execution and delivery by  the  Trustee.
In  case  any authorized officer of the Trustee or the Depositor who  has
signed  or whose facsimile signature has been placed upon any Certificate
shall  have  ceased  to be such officer before any  such  Certificate  is
issued,  it may be issued with the same effect as if he were such officer
at the date of issue.

SECTION 2.06.    INSURED  TRUST BOND INSURANCE:   Concurrently  with  the
delivery to the Trustee of the Bonds listed in the Schedules for  Insured
Trusts  attached  to  the Indenture, the Insurer  has  delivered  to  and
deposited with the Trustee, a Municipal Bond Insurance Policy or Policies
(the  "Insurance")  to  protect each Bond  and  the  Unitholders  of  the
respective Insured Trust in which such Bond is held against nonpayment of
principal and interest when due on any such Bond or Bonds (except for Pre-
Insured Bonds).

     The  Trustee shall take all action deemed necessary or advisable  in
connection with the Insurance to continue the Insurance in full force and
effect,  all  in  such manner as in its sole discretion shall  appear  to
result in the most protection and least expense to each Insured Trust.

     At  all  times  during  the  existence of  the  Insured  Trust,  the
Insurance  policies  shall provide for payment  by  the  Insurer  to  the
Trustee  of any amounts of principal and interest due, but not  paid,  by
the  issuer  of an insured Bond.  The Trustee shall promptly  notify  the
Insurer  of  any  nonpayment  or threatened nonpayment  of  principal  or
interest  and  the  Insurer shall in accordance with  the  terms  of  the
policies  make  payment to the Trustee of all amounts  of  principal  and
interest at that time due, but not paid.

     Upon  the  making  of  any  payment referred  to  in  the  preceding
paragraphs, the Insurer shall succeed to the rights of the Trustee  under
the  Bond  or  Bonds  involved  to  the  extent  of  the  payments  made.
Concurrently with the payment of any amounts by the Insurer occasioned by
the  nonpayment of principal and/or interest by the issuer,  the  Trustee
shall  execute  and  deliver to the Insurer any  receipt,  instrument  or
document  required  to evidence the right of the Insurer  to  payment  of
principal and/or interest under the Bond or Bonds involved to the  extent
of the payments made by the Insurer to the Trustee.

     The  Trustee shall promptly notify the Corporation of any nonpayment
of  principal  of or interest on any Bonds and if the Corporation  should
fail  to make payment to the Trustee within 30 days after receipt of such
notice, the Trustee shall take all action against the Corporation  and/or
the  issuer  deemed  necessary to collect all amounts  of  principal  and
interest at that time due, but not collected.


                                   -12-
<PAGE>
                               ARTICLE III

                         ADMINISTRATION OF FUND

SECTION 3.01.    INITIAL  COST:   The cost of  the  initial  preparation,
printing  and  execution  of the Certificates  and  this  Indenture,  the
initial  fees  of  the  Trustee  and  the  Trustee's  counsel  and  other
reasonable  expenses  in  connection therewith,  shall  be  paid  by  the
Depositor,  PROVIDED, HOWEVER, that the liability  on  the  part  of  the
Depositor for such initial costs, fees and expenses shall not include any
fees,  costs or other expenses incurred in connection herewith after  the
execution of this Indenture and the deposit referred to in Section 2.01.

SECTION 3.02.   INTEREST ACCOUNT:  The Trustee shall collect the interest
on  the  Bonds  in  each  Trust as such becomes  payable  (including  all
interest accrued but unpaid prior to the date of deposit of the Bonds  in
trust  and  including that part of the proceeds of the sale, liquidation,
redemption or maturity of any Bonds or insurance thereon which represents
accrued interest thereon but not accrued original issue discount, if any)
and credit such interest to a separate account for each Trust to be known
as  the "Interest Account".  For purposes of this Indenture, interest  to
be  credited  to  the  Interest Account shall not be  deemed  to  include
original issue discount accrued or paid or any amounts accrued or paid in
respect of Stripped Obligations.

SECTION 3.03.    PRINCIPAL ACCOUNT:  The Bonds  in  each  Trust  and  all
moneys  (including moneys delivered to the Trustee for  the  purchase  of
bonds pursuant to contracts, which moneys are no longer required for such
purchase and all amounts received with respect to Zero Coupon Obligations
and  Stripped  Obligations) other than amounts credited to  the  Interest
Account,  received by the Trustee in respect of the Bonds in each  Trust,
including insurance thereon, shall be credited to a separate account  for
each  Trust  to  be known as the "Principal Account."  Moneys  which  are
required to cover contracts to purchase bonds are hereby declared  to  be
held  in trust by the Trustee for such purchase until the Depositor shall
have  notified  the Trustee that such contracts, and if  applicable,  any
contracts  for  New Bonds as permitted by Section 3.14, have  failed  and
shall have directed the Trustee to distribute such moneys as provided  in
Section 3.05.  For this purpose if the Depositor shall deposit New  Bonds
in  a  principal amount less than the principal amount of Special  Bonds,
such  event shall be treated as a failure as to the principal  amount  of
Special Bonds not replaced by an equal principal amount of New Bonds.

SECTION 3.04.    RESERVE ACCOUNT:  From time to time  the  Trustee  shall
withdraw  from  the  cash  on  deposit in the  Interest  Account  or  the
Principal  Account of the appropriate Trust such amounts as  it,  in  its
sole  discretion,  shall deem requisite to establish a  reserve  for  any
applicable taxes or other governmental charges that may be payable out of
such  Trust.  Such amounts so withdrawn shall be credited to  a  separate
account  for  each  Trust which shall be known  as the "Reserve  Account.
The Trustee shall not be required to distribute to the Unitholders any of
the  amounts in the Reserve Account; PROVIDED, HOWEVER, that if it shall,
in  its  sole  discretion,  determine that such  amounts  are  no  longer
necessary  for  payment  of any applicable taxes  or  other  governmental
charges,  then it shall promptly deposit such amounts in the  appropriate
account.

                                   -13-
<PAGE>
SECTION 3.05.    DISTRIBUTIONS:  For Trusts other than Compound  Interest
Trusts,  the  Trustee, as of the date indicated in Item 2  of  Schedule A
hereto, shall advance from its own funds and shall pay to the Unitholders
of the respective Trusts then of record the amount of interest accrued on
the  Bonds  deposited  in the respective Trusts.  The  Trustee  shall  be
entitled  to  reimbursement, without interest, for such advancement  from
interest   received   by  the  respective  Trusts  before   any   further
distributions  shall be made from the Interest Account to Unitholders  of
the  respective  Trusts.   Subsequent  distributions  shall  be  made  as
hereinafter  provided.  For  Trusts other than Compound Interest  Trusts,
the  second  distribution  of funds from the  Interest  Accounts  of  the
respective  Trusts shall be in the amounts as indicated in  Item 5(a)  of
Schedule A hereto and shall be made on the date as indicated in Item 5(b)
of  said Schedule A to or upon the order of all Unitholders of record  of
the  respective Trusts as of the dates as indicated in Item 5(c) of  said
Schedule A.   For all subsequent semi-annual distributions to Unitholders
of  any Trust (other than Compound Interest Trusts), the "Record Date" is
hereby  fixed to be the first day of the months of each year as indicated
in Item 6 of said Schedule A.


     As  of the first day of each month of each year commencing with  the
dates  as  indicated in Item 10 of Schedule A hereto, the  Trustee  shall
with respect to each Trust:

          (a)    deduct from the Interest Account or, to the extent funds
     are  not  available in such Account, from the Principal Account  and
     pay  to  itself  individually the amounts that it  is  at  the  time
     entitled to receive pursuant to Section 5.04;

          (b)   deduct from the Interest Account, or, to the extent funds
     are  not  available in such Account, from the Principal Account  and
     pay  to the Depositor the amount that it is at the time entitled  to
     receive pursuant to Section 4.05; and

          (c)   deduct from the Interest Account, or, to the extent funds
     are  not  available in such Account, from the Principal Account  and
     pay to bond counsel, as hereinafter provided for, an amount equal to
     unpaid  fees and expenses, if any, of such bond counsel as certified
     to by the Depositor.

     For  Trusts other than Compound Interest Trusts, on or shortly after
the  15th  day  of  each  of  the months as  indicated  in  Item 6(a)  of
Schedule A hereto (the "SEMI-ANNUAL DISTRIBUTION DATE") commencing on the
date  as  indicated in Item 5(b) of said Schedule A, the  Trustee  shall,
with  respect  to any Trust, distribute by mail to or upon the  order  of
each  Unitholder of record of such trust as of the close of  business  on
the  preceding  Record Date at the post office address appearing  on  the
registration books of the Trustee such Unitholder's pro rata share of the
balance of the Interest Account of such Trust calculated as of the Record
Date  for  such  Semi-Annual payment on the  basis  of  one-half  of  the
estimated  annual  interest income to such Trust for the  ensuing  twelve
months, after deduction of the estimated costs and expenses of such Trust
to  be  incurred  during the twelve month period for which  the  interest
income has been estimated.

     For  Trusts  other than Compound Interest Trusts, in the  event  the
amount  on  deposit in the Interest Account of any Trust on a Semi-Annual

                                   -14-
<PAGE>
Distribution  Date is not sufficient for the payment  of  the  amount  of
interest to be distributed on the basis of the aforesaid computation, the
Trustee  shall advance out of its own funds and cause to be deposited  in
and  credited to such Interest Account such amount as may be required  to
permit  payment of the semi-annual interest distribution to  be  made  on
such   Semi-Annual  Distribution  Date  and  shall  be  entitled  to   be
reimbursed,  without  interest, out of interest received  by  such  Trust
subsequent to the date of such advance and subject to the condition  that
any such reimbursement shall be made only under conditions which will not
reduce  the funds in or available for the Interest Account to  an  amount
less  than  required for the next ensuing distribution of interest.   The
Trustee's fee takes into account the costs attributable to the outlay  of
capital needed to make such advances.

     In lieu of the semi-annual distributions of interest provided above,
a  Unitholder  of  any Trust (other than a Compound Interest  Trust)  may
elect to receive payments from the Interest Account of such Trust monthly
or  quarterly.   The second distribution hereinbefore PROVIDED,  HOWEVER,
shall  be made to or upon the order of all holders of Units of such Trust
(other  than  a  Compound  Interest Trust) who  have  chosen  to  receive
subsequent distributions on a different basis.

     Unitholders  of  any  Trust (other than a Compound  Interest  Trust)
desiring  to receive monthly or quarterly distributions and who  purchase
their  Certificates prior to the Record Date for the second  distribution
may  elect at the time of purchase to receive distributions on a  monthly
or  quarterly  basis by notice to the Trustee.  Unitholders must  furnish
written  notice to the Trustee indicating their desire to receive monthly
or  quarterly distributions.  The Trustee, within five business  days  of
receiving  such  notice, shall issue to the Book Entry Unitholder  a  new
Book  Entry Position Confirmation indicating such Unitholder's  preferred
distribution  plan.   Such  notice shall be  effective  with  respect  to
subsequent distributions until changed by further notice to the  Trustee.
Those  wishing to change their plan of distribution must do so by sending
written notice at any time to the Trustee; Certificated Unitholders  must
also  send  to the Trustee the Certificate to which the requested  change
relates.   Changes may be made only as herein provided  and  will  become
effective as of the following May 2 if received by May 1 of such year, or
as  of  November  2  if  received by November 1 of  such  year  and  such
distributions will continue until further notice.

     For  monthly distributions the share of the balance in the  Interest
Account  to  be distributed to or upon the order of a Unitholder  of  any
Trust  (other than a Compound Interest Trust) who has elected to  receive
monthly  distributions, after the second distribution, shall be  computed
as  of  the  first day of each month commencing with the first  such  day
subsequent to the date of the Certificate or to the date of the recording
of  the  Book Entry Position on the books of the Trustee and distribution
made as provided herein on or shortly after the 15th day of the month  of
computation  to  the  Unitholder of record on such date  of  computation.
Such  computation  shall  be  made on the basis  of  one-twelfth  of  the
estimated  annual interest income to the related Trust  for  the  ensuing
twelve  months for the account of Unitholders of any Trust (other than  a
Compound   Interest   Trust)  who  have  elected   to   receive   monthly
distributions, after deduction of the estimated costs and expenses to  be
incurred on behalf of such Unitholders during the twelve month period for
which such interest income has been estimated.

                                   -15-
<PAGE>
     For quarterly distributions the share of the balance in the Interest
Account  to  be distributed to or upon the order of a Unitholder  of  any
Trust  (other than a Compound Interest Trust) who has elected to  receive
quarterly distributions, after the second distribution, shall be computed
as  of  the  first day of each of the months as indicated  in  Item 9  of
Schedule A hereto, commencing with the first such day subsequent  to  the
date of the Certificate or to the date of the recording of the Book Entry
Position  on  the books of the Trustee and distribution made as  provided
herein  on  or shortly after the 15th day of the month of computation  to
the  Unitholder of record on such date of computation.  Such  computation
shall be made on the basis of one-fourth of the estimated annual interest
income to the related Trust for the ensuing twelve months for the account
of  Unitholders of any Trust (other than a Compound Interest  Trust)  who
have  elected to receive quarterly distributions, after deduction of  the
estimated costs and expenses to be incurred on behalf of such Unitholders
during  the twelve month period for which such interest income  has  been
estimated.


     To  the  extent practicable, the Trustee shall allocate the expenses
of each Trust among Units of such Trust within any Trust and with respect
to  Trusts other than Compound Interest Trusts, giving effect within  any
Trust  to differences in administrative and operational cost among  those
who  have  chosen  to receive distributions monthly, quarterly  or  semi-
annually.

     If  the Trustee determines that an event has occurred as a result of
which  there  has  resulted an excessive distribution from  the  Interest
Account, it shall reduce subsequent distributions so as to reconcile,  as
promptly as practicable, the aggregate net income and distributions  from
such Account.

     For  Trusts  other than Compound Interest Trusts, in the  event  the
amount  on  deposit in the Interest Account of a Trust for a  monthly  or
quarterly distribution is not sufficient for the payment of the amount of
interest  to  be  distributed  to  Unitholders  participating   in   such
distributions  on  the basis of the aforesaid computations,  the  Trustee
shall advance its own funds and cause to be deposited in and credited  to
such  Interest Account such amounts as may be required to permit  payment
of the monthly or quarterly interest distribution to be made as aforesaid
and shall be entitled to be reimbursed, without interest, out of interest
received by such Trust subsequent to the date of such advance and subject
to  the  condition that any such reimbursement shall be made  only  under
conditions  which  will  not reduce the funds in or  available  for  such
Interest  Account  to an amount less than required for the  next  ensuing
distribution of interest.  The Trustee's fee takes into account the costs
attributable  to  the  outlay of capital needed to  make  such  advances.
Distributions to Unitholders of any Trust who are participating in one of
the  optional  plans for distribution of interest shall not  be  affected
because  of  advancements by the Trustee for the  purpose  of  equalizing
distributions  to Unitholders of any Trust participating in  a  different
plan.

     With  respect to Compound Interest Trusts, the share of the  balance
in  the  Interest Account to be distributed to or upon  the  order  of  a
Unitholder,  shall  be  computed  as of  the  first  day  of  each  month
commencing  with  the  first  such day subsequent  to  the  date  of  the

                                   -16-
<PAGE>
Certificate or to the date of the recording of the Book Entry Position on
the  books of the Trustee and distribution made as provided herein on  or
shortly  after the 15th day of the month of computation to the Unitholder
of  record on such date of computation.  Distributions from the  Interest
Account  to  Unitholders will only be made if the  amount  available  for
distribution shall amount to at least $1.00 per Unit.  In the  event  the
net  amount  after  deduction  of the reasonably  anticipated  costs  and
expenses to be incurred during the ensuing six-month period from the date
of  computation available for distribution in the Interest Account equals
at  least $1.00 per Unit, such amount shall be distributed to Unitholders
as provided above.

     For  Trusts  other  than Compound Interest Trusts, distributions  of
amounts represented by the cash balance in the Principal Account for each
Trust  shall  be  computed as of the date as indicated  in  Item 7(b)  of
Schedule A  hereto, and thereafter as of the first day of the  months  of
each year as indicated in Item 7(a) of said Schedule A.  With respect  to
Compound  Interest  Trusts, distributions of amounts represented  by  the
cash balance in the Principal Account for such Trust shall be computed as
of  the first day of each month.  On the fifteenth day of each month,  in
which  such  computation is made, or within a reasonable period  of  time
thereafter, the Trustee shall distribute by mail to or upon the order  of
each  Unitholder  of  record at the close of  business  on  the  date  of
computation  (the Record Date) at his post office address  such  holder's
pro  rata  share  of the cash balance of such Principal Account  as  thus
computed.  The Trustee shall not be required to make a distribution  from
such  Principal  Account  unless  the cash  balance  on  deposit  therein
available for distribution shall be sufficient to distribute at least  10
cents per Unit.

     Notwithstanding the foregoing, if the Depositor fails to replace any
Special  Bond  (as defined in Section 3.14) in a Trust by  delivering  an
equal  principal  amount  of  New Bonds  to  the  Trustee  prior  to  the
expiration of the Purchase Period as defined in Section 3.14, the Trustee
shall distribute to all Unitholders of Units in the respective Trust  the
entire  amount  of  principal and accrued interest attributable  to  such
Special  Bonds  which  have  not been so replaced  at  the  next  monthly
distribution date which is more than thirty days after the expiration  of
the  Purchase Period or at such earlier time as the Trustee in  its  sole
discretion deems to be in the best interest of the Unitholders.


     The  Trustee may, in its discretion, adjust the amount of subsequent
distributions  from  the  Trust  to take account  of  any  difference  in
interest  accrued  on  the New Bond at the time of its  deposit  and  the
interest which would have accrued on the Special Bond as of such date.

     The amounts to be so distributed to each Unitholder of a Trust shall
be  that pro rata share of the cash balance of the Interest and Principal
Accounts  of  such  Trust,  computed as set  forth  above,  as  shall  be
represented  by  the  Units evidenced by the outstanding  Certificate  or
Certificates registered in the name of such Unitholders and/or Book Entry
Positions recorded in the names of such Unitholders on the books  of  the
Trustee.

     In  the  computation of each such share, fractions of less than  one
cent  shall be omitted.  After any such distribution provided for  above,
any  cash  balance  remaining in the Interest Account  or  the  Principal
Account  of  a  Trust shall be held in the same manner as  other  amounts
subsequently deposited in each of such Accounts, respectively.

                                   -17-
<PAGE>
     For  the purpose of distribution as herein provided, the holders  of
record  on the registration books of the Trustee at the close of business
on  each Record Date shall be conclusively entitled to such distribution,
and  no liability shall attach to the Trustee by reason of payment to  or
upon  the  order  of any such registered Unitholder of  record.   Nothing
herein  shall  be  construed to prevent the payment of amounts  from  the
Interest  Account  and  the Principal Account of a  Trust  to  individual
Unitholders  by  means  of one check, draft or other  proper  instrument,
provided  that  the appropriate statement of such distribution  shall  be
furnished therewith as provided in Section 3.06 hereof (unless waived  as
set forth in said Section 3.06).

SECTION 3.06.   DISTRIBUTION STATEMENTS:  With each distribution from the
Interest  or Principal Accounts of a Trust the Trustee shall  set  forth,
either  in  the instrument by means of which payment of such distribution
is  made  or  in an accompanying statement, the amount being  distributed
from  each  such account expressed as a dollar amount per  Unit  of  such
Trust  except that such information need not be furnished to a Unitholder
who has waived receipt thereof in writing.   In the event that the issuer
or insurer of any of the Bonds in a Trust shall fail to make payment when
due of any interest or principal and such failure results in a change  in
the   amount   which  would  otherwise  be  distributed  as   a   monthly
distribution, the Trustee shall, with the first distribution relating  to
such Trust following such failure, set forth in an accompanying statement
(a)  the name of the issuer and the Bond, (b) the amount of the reduction
in  the  distribution  per  unit resulting from  such  failure,  (c)  the
percentage  of  the aggregate principal amount of Bonds which  such  Bond
represents  and (d) to the extent then determined, information  regarding
any disposition or legal action with respect to such Bond.

     Within  a reasonable period of time after the last business  day  of
each  calendar year, the Trustee shall furnish to each person who at  any
time  during  such calendar year was a Unitholder of a Trust a  statement
setting  forth,  with respect to such calendar year and with  respect  to
such Trust:

         (A)   as to the Interest Account:

               (1)   the amount of interest received on the Bonds,

               (2)   the amounts paid for purchases of New Bonds pursuant
          to Section 3.14 and for redemptions pursuant to Section 4.02,

               (3)    the  deductions for applicable taxes and  fees  and
          expenses of the Trustee and bond counsel, and

               (4)    the balance remaining after such distributions  and
          deductions, expressed both as a total dollar amount  and  as  a
          dollar amount per Unit outstanding on the last business day  of
          such calendar year;

         (B)   as to the Principal Account:

                                   -18-
<PAGE>
               (1)    the  dates  of the sale, maturity,  liquidation  or
          redemption  of  any of the Bonds and the net proceeds  received
          therefrom  excluding  any  portion  thereof  credited  to   the
          Interest Account,

               (2)    the  amounts received with respect to  Zero  Coupon
          Obligations  and  Stripped  Obligations  which,  based  on  the
          Evaluator's  price therefor on the Date of Deposit,  constitute
          tax-exempt   original  issue  discount  to  a  Unitholder   who
          purchased his Units on the Day of Deposit,

               (3)    the amount paid for purchases of New Bonds pursuant
          to Section 3.14 and for redemptions pursuant to Section 4.02,

               (4)    the deductions for payment of applicable taxes  and
          fees and expenses of the Trustee and bond counsel, and

               (5)    the balance remaining after such distributions  and
          deductions, expressed both as a total dollar amount  and  as  a
          dollar amount per Unit outstanding on the last business day  of
          such calendar year; and

         (C)   the following information:

               (1)    a list of the Bonds as of the last business day  of
          such calendar year,

               (2)   the number of Units outstanding on the last business
          day of such calendar year,

               (3)    the Unit Value based on the last evaluation of such
          Trust made during such calendar year,

              (4)   the amounts actually distributed during such calendar
          year  from  the  Interest  and Principal  Accounts,  separately
          stated,  expressed both as total dollar amounts and  as  dollar
          amounts  per  Unit  outstanding on the record  dates  for  such
          distributions, and

               (5)    for  Compound Interest Trusts only, the  amount  of
          original issue discount earned on portfolio Bonds, based on the
          valuation of such Bonds on the Date of Deposit.

SECTION 3.07.    SALE OF BONDS:  If necessary, in order to  maintain  the
sound  investment  character of a Trust, the  Depositor  may  direct  the
Trustee  to sell or liquidate Bonds in such Trust at such price and  time
and in such manner as shall be determined by the Depositor, provided that
the  Depositor  has  determined  that  any  one or more of the  following
conditions exist:


         (a)   that there has been a default on such Bonds in the payment
     of principal or interest, or both, when due and payable;

                                   -19-
<PAGE>
          (b)   that any action or proceeding has been instituted in  law
     or  equity seeking to restrain or enjoin the payment of principal or
     interest on any such Bonds, attacking the constitutionality  of  any
     enabling  legislation  or alleging and seeking  to  have  judicially
     determined the illegality of the issuing body or the constitution of
     its  governing  body  or officers, the illegality,  irregularity  or
     omission  of  any necessary acts or proceedings preliminary  to  the
     issuance  of  such  Bonds,  or seeking to  restrain  or  enjoin  the
     performance by the officers or employees of any such issuing body of
     any improper or illegal act in connection with the administration of
     funds necessary for debt service on such Bonds or otherwise; or that
     there  exists any other legal question or impediment affecting  such
     Bonds or the payment of debt service on the same;
         (c)   that there has occurred any breach of covenant or warranty
     in  any  resolution, ordinance, trust indenture or  other  document,
     which would adversely affect either immediately or contingently  the
     payment  of  debt  service on such Bonds, or  their  general  credit
     standing, or otherwise impair the sound investment character of such
     Bonds;

          (d)   that there has been a default in the payment of principal
     of  or interest on any other outstanding obligations of an issuer of
     such Bonds;

         (e)   that in the case of revenue Bonds, the revenues and income
     of  the facility or project or other special funds expressly charged
     and   pledged  for  debt  service  on  any  such  Bonds  shall  fall
     substantially  below the estimated revenues or income calculated  by
     the   engineers   or  other  proper  officials  charged   with   the
     acquisition, construction or operation of such facility or  project,
     so  that,  in  the opinion of the Depositor, the retention  of  such
     Bonds would be detrimental to the sound investment character of such
     Trust and to the interest of the Unitholders thereof;

          (f)   that the price of any such Bonds has declined to such  an
     extent, or such other market or credit factor exists, so that in the
     opinion  of  the  Depositor the retention of  such  Bonds  would  be
     detrimental  to  such Trust and to the interest of  the  Unitholders
     thereof;

          (g)   that such Bonds are the subject of an advanced refunding.
     For  the  purposes of this Section 3.07(g), "an advanced  refunding"
     shall  mean when refunding bonds are issued and the proceeds thereof
     are  deposited  in  an  irrevocable trust  to retire the Bonds on or
     before their redemption date; or

          (h)   that as of any Record Date any of the Bonds are scheduled
     to  be  redeemed  and  paid  prior to the  next  succeeding  Monthly
     Distribution  Date; PROVIDED, HOWEVER, that as the  result  of  such
     redemption the Trustee will receive funds in an amount sufficient to
     enable the Trustee to include in the distribution from the Principal
     Account  on such next succeeding Monthly Distribution Date at  least
     $.50 per Unit.

                                   -20-
<PAGE>
     Upon  receipt of such direction from the Depositor, upon  which  the
Trustee  shall  rely, the Trustee shall proceed to sell or liquidate  the
specified  Bonds  in  accordance with such direction; PROVIDED,  HOWEVER,
that the Trustee shall not sell or liquidate any Bonds upon receipt of  a
direction  from the Depositor that it has determined that the  conditions
in  subdivision  (h)  above exist, unless the Trustee  shall  receive  on
account  of  such sale or liquidation the full principal amount  of  such
Bonds,  plus the premium, if any, and the interest accrued and to  accrue
thereon  to the date of the redemption of such Bonds.  The Trustee  shall
not be liable or responsible in any way for depreciation or loss incurred
by reason of any sale made pursuant to any such direction or by reason of
the  failure  of  the Depositor to give any such direction,  and  in  the
absence  of  such  direction the Trustee shall have no duty  to  sell  or
liquidate  any  Bonds  under  this  Section 3.07  except  to  the  extent
otherwise required by Section 3.10 of this Indenture.

SECTION 3.08.    REFUNDING BONDS:  In the event that an  offer  shall  be
made  by  an  obligor  of  any of the Bonds  in  a  Trust  to  issue  new
obligations in exchange and substitution for any issue of Bonds  pursuant
to  a  plan for the refunding or refinancing of such Bonds, the Depositor
shall instruct the Trustee in writing to reject such offer and either  to
hold or sell such Bonds, except that if (1) the issuer is in default with
respect  to such Bonds or (2) in the opinion of the Depositor,  given  in
writing to the Trustee, the issuer will probably default with respect  to
such  Bonds  in  the reasonably foreseeable future, the  Depositor  shall
instruct  the Trustee in writing to accept or reject such offer  or  take
any  other action with respect thereto as the Depositor may deem  proper.
Any  obligation so received in exchange shall be deposited hereunder  and
shall  be  subject to the terms and conditions of this Indenture  to  the
same  extent  as the Bonds originally deposited hereunder.   Within  five
days  after  such deposit, notice of such exchange and deposit  shall  be
given  by  the  Trustee to each Unitholder of such  Trust,  including  an
identification  of  the  Bonds  eliminated  and  the  bonds   substituted
therefor.

SECTION 3.09.   BOND COUNSEL:  The Depositor may employ from time to time
as it may deem necessary a firm of municipal bond attorneys for any legal
services  that  may  be required in connection with  the  disposition  of
underlying  bonds  pursuant to Section 3.07 or the  substitution  of  any
securities for underlying bonds as the result of any refunding  permitted
under Section 3.08.  The fees and expenses of such bond counsel shall  be
paid  by  the  Trustee from the Interest and Principal  Accounts  of  the
applicable Trust as provided for in Section 3.05(c) hereof.

SECTION 3.10.   NOTICE AND SALE BY TRUSTEE:  If at any time the principal
of  or  interest on any of the Bonds shall be in default and not paid  or
provision  for  payment  thereof shall not have been  duly  made,  either
pursuant to any Insurance thereon or otherwise, the Trustee shall  notify
the Depositor thereof.  If within thirty days after such notification the
Depositor  has not given any instruction to sell or to hold  or  has  not
taken  any other action in connection with such Bonds, the Trustee  shall
sell  such  Bonds  forthwith, and the Trustee  shall  not  be  liable  or
responsible  in any way for depreciation or loss incurred  by  reason  of
such sale.

                                   -21-
<PAGE>
SECTION 3.11.    TRUSTEE NOT TO AMORTIZE:  Nothing in this Indenture,  or
otherwise,  shall  be  construed  to require  the  Trustee  to  make  any
adjustments between the Interest and Principal Accounts of any  Trust  by
reason of any premium or discount in respect of any of the Bonds.

SECTION 3.12.   LIABILITY OF DEPOSITOR:  The Depositor shall be under  no
liability to the Unitholders for any action taken or for refraining  from
the  taking of any action in good faith pursuant to this Indenture or for
errors in judgment, but shall be liable only for its own negligence, lack
of good faith or willful misconduct. The Depositor may rely in good faith
on   any   paper,  order,  notice,  list,  affidavit,  receipt,  opinion,
endorsement,  assignment, draft or any other document of any  kind  prima
facie properly executed and submitted to it by the Trustee, bond counsel,
or any other persons pursuant to this Indenture and in furtherance of its
duties.

SECTION 3.13.   NOTICE TO DEPOSITOR:  In the event that the Trustee shall
have  been notified at any time of any action to be taken or proposed  to
be taken by holders of the Bonds (including but not limited to the making
of  any  demand,  direction, request, giving of any  notice,  consent  or
waiver  or the voting with respect to any amendment or supplement to  any
indenture, resolution, agreement or other instrument under or pursuant to
which  the Bonds have been issued) the Trustee shall promptly notify  the
Depositor and shall thereupon take such action or refrain from taking any
action as the Depositor shall in writing direct; PROVIDED, HOWEVER,  that
if  the  Depositor shall not within five business days of the  giving  of
such  notice to the Depositor direct the Trustee to take or refrain  from
taking any action, the Trustee shall take such action as it, in its  sole
discretion, shall deem advisable.  Neither the Depositor nor the  Trustee
shall  be  liable to any person for any action or failure to take  action
with respect to this Section 3.13.

SECTION 3.14.   LIMITED REPLACEMENT OF SPECIAL BONDS:  If any contract in
respect  of Bonds in a Trust other than a contract to purchase New  Bonds
(as defined below), including those purchased on a when, as and if issued
basis,  shall have failed due to any occurrence, act or event beyond  the
control  of the Depositor or the Trustee (such failed Bonds being  herein
called the "Special Bonds"), the Depositor shall notify the Trustee (such
notice being herein called the "Failed Contract Notice") of its inability
to deliver the Special Bonds to the Trustee promptly after it is notified
that the Special Bonds will not be delivered to it by the seller thereof.
The  Depositor shall have until the earlier of twenty days  after  giving
the  Failed  Contract Notice or ninety days after the date  indicated  in
Item 2  of  Schedule A to this Indenture (such twenty-day  or  ninety-day
period  being  herein called the "Purchase Period")  to  deliver  to  the
Trustee  an  obligation to be held as Bonds hereunder (herein called  the
"New  Bonds") as part of such Trust in replacement of an equal  principal
amount  of  the  Special Bonds, subject to the satisfaction of all of the
following conditions in the case of any such new Bonds:

          (a)    The New Bonds (i) shall be tax-exempt obligations issued
     by  states, territories or their political subdivisions, (ii)  shall
     have  a fixed maturity date (whether or not entitled to the benefits
     of  any  sinking redemption, purchase or similar fund) not exceeding

                                   -22-
<PAGE>
     the  date of maturity of the Special Bonds they replace and not less
     than  approximately  1  year in the case  of  a  Short  Term  Trust,
     approximately  3  years in the case of a Short  Intermediate  Trust,
     approximately  5 years in the case of an Intermediate  Trust,  State
     Intermediate  Trust  or  Compound Interest Trust,  approximately  11
     years in the case of a Long Intermediate Trust and approximately  15
     years in the case of any other Trust, in each case after the date of
     purchase,   (iii) shall  be  acquired  by  the  Trust  at   a   cost
     ("ACQUISITION  COST")  equal  to  the  "Trustee's  Determination  of
     Offering  Price" of the respective Trust indicated in the  "Schedule
     of  Investments"  set  forth in the Prospectus  dated  the  Date  of
     Deposit  and  relating to the Series of the Nuveen  Tax-Exempt  Unit
     Trust  as  indicated  in  Item 1 of Schedule A  to  this  Indenture,
     attributable to the principal amount of Special Bonds they  replace,
     (iv)  must have a current return based on their Acquisition Cost  at
     least  equal to the current return as of the Date of Deposit of  the
     Special Bonds they replace, (v) must have a yield to maturity  based
     on their Acquisition Cost at least equal to the yield to maturity as
     of the Date of Deposit of the Special Bonds they replace, (vi) shall
     be  payable  as to principal and interest, if any, in United  States
     currency,  (vii) shall  not  be  when,  as  and  if  issued   Bonds,
     (viii) with  respect  to  a  State  Trust,  shall  have  benefit  of
     exemption from state taxation to an equal or greater extent than the
     Special Bonds they replace, (ix) with respect to a Compound Interest
     Trust,  shall  be  non-interest bearing  (unless  the  New  Bond  is
     replacing the current interest paying Special Bond or Special  Bonds
     to be used to pay expenses of such Trust) and (x) with respect to  a
     New  Bond  replacing  the current interest paying  Special  Bond  or
     Special  Bonds  to  be used to pay expenses of a  Compound  Interest
     Trust, such New Bond shall not be subject to redemption prior to its
     maturity.

          (b)    Each  New Bond shall be rated at least "A" or better  by
     Standard  & Poor's Corporation or "A" or better by Moody's Investors
     Service, Inc.

          (c)    The  principal  amount of the New  Bonds  (exclusive  of
     accrued  interest)  shall  not exceed the principal  amount  of  the
     Special Bonds.

          (d)    In the case of Insured Trusts, each New Bond shall be  a
     Pre-Insured Bond or shall be acceptable to the Insurer to be insured
     under  policies of insurance identical in form and substance to  the
     Insurance included and will be so included upon acquisition  by  the
     Trust.

          (e)  The Depositor shall furnish a notice to the Trustee (which
     may  be  part of the Failed Contract Notice) in respect of  the  New
     Bond  purchased or to be purchased that shall (i) identify  the  New
     Bonds,  (ii)  state that the contract to purchase, if  any,  entered
     into  by  the  Depositor is satisfactory in form and substance,  and
     (iii) state that the foregoing conditions of clauses (a) through (d)
     have been satisfied with respect to the New Bonds.

     Upon  satisfaction of the foregoing conditions with respect  to  any
New  Bonds, the Depositor shall pay the purchase price for the New  Bonds
from  its  own  resources or if and to the extent that  the  Trustee  has
credited any moneys and/or letters of credit attributable to the  Special
                                   -23-
<PAGE>
Bonds  to the Principal Account of such Trust, the Trustee shall pay  the
purchase  price of the New Bonds upon directions from the Depositor  from
the  moneys  and/or letters of credit so credited.  If the Depositor  has
paid the purchase price and, in addition, the Trustee has credited moneys
of  the  Depositor  to the Principal Account of such Trust,  the  Trustee
shall  forthwith return to the Depositor the portion of such moneys  that
is not properly distributable to Unitholders pursuant to Section 3.05.

     Whenever any New Bond is acquired by the Depositor pursuant  to  the
provisions  of  this Section 3.14, the Trustee shall,  within  five  days
after the delivery thereof to the Trustee mail to all Unitholders of  the
respective Trust notices of such acquisition, including an identification
of  the Special Bonds and the New Bonds acquired.  The Trustee shall  not
be  liable or responsible in any way for depreciation or loss incurred by
reason  of  any  purchase  of Special Bonds or  New  Bonds  made  by  the
Depositor  and in the absence of a purchase by the Depositor the  Trustee
shall  have no duty to purchase any New Bonds under this Indenture.   The
Depositor  shall not be liable for any failure to purchase any New  Bonds
or  for  errors  of  judgment in respect of this Section 3.14;  PROVIDED,
HOWEVER,  that  these provisions shall not protect the Depositor  against
any liability to which it would otherwise be subject by reason of willful
misfeasance,  bad  faith or gross negligence in the  performance  of  its
duties  or  by  reason of its reckless disregard of its  obligations  and
duties hereunder.

     Notwithstanding  anything to the contrary in this  Section 3.14,  no
deposit of New Bonds will be made without an opinion of counsel that such
substitution will not adversely affect the federal income tax  status  of
the  Trust, if such New Bonds when added to all previously purchased  New
Bonds in the Trust exceeds 15% of the principal amount of Bonds initially
deposited in the Trust.
                               
                               
                               
                             ARTICLE IV
                               
              EVALUATION, REDEMPTION, PURCHASE, TRANSFER OR
          INTERCHANGE OF UNITS AND REPLACEMENT OF CERTIFICATES

SECTION 4.01.   EVALUATION:  The Trustee shall make an evaluation of each
Trust as of 4 p.m. eastern time, (i) on the last business day of each  of
the  months of June and December, (ii) on the day on which any Unit of  a
respective Trust is tendered for redemption, and (iii) on any  other  day
desired  by  the Trustee or requested by the Depositor.  Such evaluations
shall  take into account and itemize separately, (1) the cash on hand  in
the  respective  Trust (other than cash declared held in trust  to  cover
contracts  to purchase bonds) or moneys in the process of being collected
from  matured interest coupons or bonds matured or called for  redemption
prior to maturity, (2) the value of each issue of the Bonds in the Trust,
and   (3)  interest  accrued  thereon  not  subject  to  collection   and
distribution.   In making the evaluations the Trustee may  determine  the
value of each issue of the Bonds in the Trust by the following methods or
any combination thereof which it deems appropriate:  (i) on the basis  of
current  bid prices of such Bonds as obtained from investment dealers  or
brokers   (including  the  Depositor)  who  customarily  deal  in   bonds

                                   -24-
<PAGE>
comparable  to  those held by the Trust, or (ii) if bid  prices  are  not
available  for  any  of  such  Bonds, on the  basis  of  bid  prices  for
comparable bonds, or (iii) by causing the value of the Bonds in the Trust
to be determined by others engaged in the practice of evaluating, quoting
or  appraising bonds.  For each such evaluation there shall  be  deducted
from  the sum of the above (i) amounts representing any applicable  taxes
or  governmental  charges  payable out of the  Trust  and  for  which  no
deductions shall have previously been made for the purpose of addition to
the  Reserve  Account  of such Trust, (ii) amounts  representing  accrued
expenses  of  the  Trust including but not limited  to  unpaid  fees  and
expenses of the Trustee, the Depositor and bond counsel, in each case  as
reported  by  the Trustee to the Depositor on or prior  to  the  date  of
evaluation, and (iii) cash held for distribution to Unitholders  of  such
Trust  of  record as of a date prior to the evaluation then  being  made.
The value of the pro rata share of each Unit of such Trust determined  on
the basis of any such evaluation shall be referred to herein as the "Unit
Value".

     The  Depositor shall make an evaluation of each Trust as of  4  p.m.
eastern time, (i) on the last business day of each of the months of  June
and December, (ii) on the day in which any Unit of such Trust is tendered
for  redemption, and (iii) on any other day such an evaluation is desired
by  the Trustee or is deemed necessary by the Depositor.  Such evaluation
shall  be made on the same basis as set forth in the preceding paragraph.
The  Trustee, in lieu of making the evaluation provided in the  preceding
paragraph, may use the evaluation made by the Depositor for all  purposes
of  this Indenture, except as provided in the following paragraph, and in
so  doing,  shall  not be liable or responsible, under any  circumstances
whatever,  for the accuracy or correctness thereof or for  any  error  or
omission therein.

     The  Trustee shall make an evaluation of the Bonds deposited in each
Trust  as  of the day preceding the day on which said Bonds are deposited
under this Indenture.  Such evaluation shall be made on the same basis as
set forth in the second preceding paragraph except that it shall be based
upon  offering  prices  of said Bonds.  In addition  to  the  methods  of
determining the value of the Bonds described above, the Trustee may  make
the  initial evaluation in whole or in part by reference to the Blue List
of  Current  Municipal  Offerings  (a daily  publication  containing  the
current  public  offering prices of bonds of all grades  currently  being
offered  by  dealers  and  banks).  The Trustee's  determination  of  the
offering  price of the Bonds on the date of deposit shall be included  in
the Schedules attached hereto.

     SECTION 4.02. REDEMPTIONS BY TRUSTEE; PURCHASES BY DEPOSITOR:
A  Certificated  Unitholder  may  redeem  his Units by sending a  written
redemption  request and tendering his Certificate to the Trustee  at  its
corporate  trust  office in the City of New York.   Any  individual  Book
Entry  Unitholder redeeming 1,000 Units or less may do  so  by  telephone
upon  completion and submission to the Trustee of a Telephone  Redemption
Authorization  Form prior to the date of redemption (the  "ELIGIBLE  BOOK
ENTRY  UNITHOLDERS").  All other Book Entry Unitholders must  make  their
redemption  request  in  writing to the Trustee at  its  corporate  trust
office in the City of New York, and may do so by (i) completing the  form
on  the  reverse side of their Book Entry Position Confirmation  or  (ii)
sending  a  written  redemption  request  which  includes  (a)  the   tax
identification  number for the account, (b) the name and address  of  the
redeeming  Unitholder, (c) a complete description  of  the  Units  to  be

                                   -25-
<PAGE>
redeemed  with  the Trust number and payment option, (d)  the  number  of
Units  to  be redeemed, (e) a notation that the Units are in  Book  Entry
form  and  (f)  the  number of Units remaining, if the  redemption  is  a
partial redemption.  Any proper request for redemption made in one of the
manners  provided  for  above shall be effected by  the  Trustee  on  the
seventh  calendar  day  following the  day  on  which  such  request  for
redemption  is  made, provided that if such day of redemption  is  not  a
business day, then such Units shall be redeemed on the first business day
prior  thereto (being herein called the "REDEMPTION DATE").   Subject  to
payment  by  any  redeeming Unitholder of any tax or  other  governmental
charges  which may be imposed thereon, such redemption is to be  made  by
payment  on  the  Redemption Date of cash equivalent to the  Unit  Value,
determined  by the Trustee as of 4:00 p.m. eastern time, on the  date  of
tender, multiplied by the number of Units owned by the Unitholder plus  a
sum  equivalent to the amount of accrued interest which would  have  been
payable  on  such  Units to, but not including, the  fifth  business  day
following  the  date  of tender (herein called the  "REDEMPTION  PRICE").
Unit  redemption  requests received by telephone or  in  writing  by  the
Trustee  on any day after 4:00 p.m. eastern time will be treated  by  the
Trustee  as received on the next day on which the New York Stock Exchange
is  open for trading and will be deemed to have been received on such day
for redemption at the Redemption Price computed on that day.

     The Trustee may in its discretion, and shall when so directed by the
Depositor,  suspend  the right of redemption for  Units  of  a  Trust  or
postpone  the date of payment of the Redemption Price therefor  for  more
than seven calendar days following the day on which a proper request  for
redemption  is  made in the manner provided for in this Section 4.02  (1)
for  any period during which the New York Stock Exchange is closed  other
than  customary weekend and holiday closings or during which  trading  on
the  New  York  Stock Exchange is restricted; (2) for any  period  during
which an emergency exists as a result of which disposal by such Trust  of
the  Bonds  is  not  reasonably  practicable  or  it  is  not  reasonably
practicable fairly to determine in accordance herewith the value  of  the
Bonds;  or  (3)  for  such  other period as the Securities  and  Exchange
Commission may by order permit, and shall not be liable to any person  or
in  any  way  for  any  loss or damage which may  result  from  any  such
suspension or postponement.

     Not later than the close of business on the day a proper request for
redemption  in  the  manner  provided  for  in  this  Section 4.02  by  a
Unitholder other than the Depositor is received, the Trustee shall notify
the  Depositor of such request.  The Depositor shall have  the  right  to
purchase such Units by notifying the Trustee of its election to make such
purchase as soon as practicable thereafter but in no event subsequent  to
the  close of business on the second business day after the day on  which
the  request  for redemption of such Units was received.   Such  purchase
shall  be  made  by  payment  for such Units  by  the  Depositor  to  the
Unitholder not later than the close of business on the Redemption Date of
an  amount equal to the Redemption Price which would otherwise be payable
by the Trustee to such Unitholder.

     Any  Unit  so  purchased by the Depositor may at the option  of  the
Depositor  be  tendered to the Trustee for redemption  at  the  corporate
trust office of the Trustee in the manner provided in the first paragraph
of this Section 4.02.

     If  the  Depositor does not elect to purchase any Unit  of  a  Trust
tendered to the Trustee for redemption, or if a Unit is being tendered by

                                   -26-
<PAGE>
the  Depositor for redemption, that portion of the Redemption Price which
represents interest shall be withdrawn from the Interest Account of  such
Trust  to  the  extent available.  The balance paid  on  any  redemption,
including accrued interest, if any, shall be withdrawn from the Principal
Account  of  such Trust to the extent that funds are available  for  such
purpose.   If  such available balance shall be insufficient  the  Trustee
shall sell such of the Bonds held in such Trust currently designated  for
such  purposes  by  the Depositor as the Trustee in its  sole  discretion
shall  deem necessary.  In the event that funds are withdrawn  from  such
Principal Account for payment of accrued interest, such Principal Account
shall be reimbursed for such funds so withdrawn when sufficient funds are
next available in such Interest Account.


     The  Depositor  shall maintain with the Trustee a  current  list  of
Bonds  held  in  each  Trust designated to be sold  for  the  purpose  of
redemption  of  Units  of  each Trust tendered  for  redemption  and  not
purchased  by  the  Depositor,  and for payment  of  expenses  hereunder,
provided that if the Depositor shall for any reason fail to maintain such
a list, the Trustee, in its sole discretion, may designate a current list
of  Bonds for such purposes.  The net proceeds of any sales of Bonds from
such  list  representing  principal shall be credited  to  the  Principal
Account of such Trust and the proceeds of such sales representing accrued
interest, if any, but not accrued original issue discount, if any,  shall
be credited to the Interest Account of such Trust.

     The  Trustee  shall  not be liable or responsible  in  any  way  for
depreciation  or  loss  incurred by reason of  any  sale  of  Bonds  made
pursuant to this Section 4.02.

     Certificates evidencing Units redeemed pursuant to this Section 4.02
shall be canceled by the Trustee and the Unit or Units evidenced by  such
Certificates or Book Entry Positions recorded on the books of the Trustee
shall be terminated by such redemptions.

SECTION 4.03.   TRANSFER OR INTERCHANGE OF UNITS:  Units represented by a
Certificate may be transferred to another person by the registered holder
thereof by written request to the Trustee accompanied by presentation and
surrender of the Certificate at the corporate trust office of the Trustee
properly  endorsed or accompanied by a written instrument or  instruments
of  transfer  in  form satisfactory to the Trustee and  executed  by  the
Certificated Unitholder.  Units represented by a Book Entry Position  may
be  transferred  by  delivery  of written transfer  instructions  to  the
corporate  trust  office of the Trustee in such form and  accompanied  by
such  documents  as the Trustee may require.  Units transferred,  whether
represented  prior  to the transfer in certificated form  or  book  entry
form,  shall  after the transfer be represented in the same form,  unless
otherwise  requested by the transferor.  Upon such transfer,  either  (i)
new   Book   Entry   Position  Confirmation(s),   (ii)   new   registered
Certificate(s)  or (iii) any combination thereof, representing  the  same
number  of  Units  as were transferred, will be issued  in  exchange  and
substitution therefor.  Any Certificated Unitholder may change  to  book
entry   ownership  upon  submitting  to  the  Trustee  such  Unitholder's
Certificate  or  Certificates  along  with  a  written  request  in  form

                                   -27-
<PAGE>
satisfactory  to  the  Trustee  that  the  Units  represented   by   such
Certificate or Certificates thereafter be held in book entry form.   Upon
such  surrender, an appropriate notation will be made in the registration
books  of  the  Trust  to indicate that the Units formerly  evidenced  by
Certificates  are  held  in  a  Book  Entry  Position.   Any  Book  Entry
Unitholder  may  change to Certificate ownership of  the  same  Trust  by
submitting a written request to the Trustee in form satisfactory  to  the
Trustee.

     Certificates  issued pursuant to this Indenture are  interchangeable
for one or more other Certificates representing an equal aggregate number
of  Units  of the same Trust.  All Units shall be issued in denominations
of  one Unit or any multiple and fraction thereof as may be requested  by
the  Unitholder.  Fractions of Units shall be computed to  three  decimal
places.

     The  Trustee  may  deem  and  treat the person  in  whose  name  any
Certificate or Book Entry Position shall be registered upon the books  of
the  Trustee as the owner of the related Units for all purposes hereunder
and  the Trustee shall not be affected by any notice to the contrary, nor
be  liable  to  any person or in any way for so deeming and treating  the
person in whose name any Certificate or Book Entry Position shall  be  so
registered.

     A  sum  sufficient to pay any tax or other governmental charge  that
may  be imposed in connection with any such transfer or interchange shall
be  paid  by  the Unitholder to the Trustee.  The Trustee may  require  a
Unitholder  to  pay  $2.00 for each new Certificate issued  on  any  such
transfer or interchange.

     All  Units canceled pursuant to this Indenture shall be disposed  of
by the Trustee without liability on its part.

SECTION 4.04.   CERTIFICATES MUTILATED, DESTROYED, STOLEN  OR  LOST:   In
case  any  Certificate shall become mutilated or be destroyed, stolen  or
lost, the Trustee shall execute and deliver a new Certificate or, at  the
Certificated Unitholder's written request in a form satisfactory  to  the
Trustee  to thereafter hold the Units in a Book Entry Position, enter  an
equivalent Book Entry Position on the records of the Trustee pursuant  to
Section 4.03  in exchange and substitution therefor upon the Unitholder's
furnishing  the  Trustee  with  proper  identification  and  satisfactory
indemnity,   complying  with  such  other  reasonable   regulations   and
conditions as the Trustee may prescribe and paying such expenses  as  the
Trustee  may  incur.  Any mutilated Certificate shall be duly surrendered
and cancelled before any new Certificate or Book Entry Position shall  be
issued  or  recorded  in exchange and substitution  therefor.   Upon  the
issuance  of any new Certificate or recording of any Book Entry  Position
on  the  books  of the Trustee a sum sufficient to pay any tax  or  other
governmental  charge  and the fees and expenses of  the  Trustee  may  be
imposed.  Any such new Certificate issued or Book Entry Position recorded
on  the  books  of the Trustee pursuant to this Section shall  constitute
complete  and indefeasible evidence of ownership of Units in the  related
Trust,  as  if  originally issued, whether or not  the  lost,  stolen  or
destroyed  Certificate shall be found at any  time.   In  the  event  the
related  Trust  has terminated or is in the process of  termination,  the
Trustee may, instead of issuing a new Certificate or recording of a  Book
Entry  Position  in  exchange and substitution for any Certificate  which
shall have become mutilated or shall have been destroyed, stolen or lost,
make the distributions in respect of such mutilated, destroyed, stolen or
lost  Certificate  (without surrender thereof except in  the  case  of  a
mutilated Certificate) as provided in Section 7.02 hereof if the  Trustee
is furnished with such security or indemnity as it may require to save it

                                   -28-
<PAGE>
harmless, and in the case of destruction, loss or theft of a Certificate,
evidence to the satisfaction of the Trustee of the destruction,  loss  or
theft of such Certificate and of the ownership thereof.

SECTION 4.05.   COMPENSATION OF DEPOSITOR:  For services performed  under
this  Indenture in evaluating and for maintaining surveillance  over  the
Bonds  in  each  Trust, the Depositor shall be paid $0.17 per  annum  per
$1,000 principal amount of Bonds in each Trust.  Such compensation  shall
be  computed on the basis of the greatest amount of such principal amount
of  Bonds  in  each Trust at any time during the period with  respect  to
which such compensation is being computed and may, from time to time,  be
adjusted provided that the total adjustment upward does not, at the  time
of  such  adjustment, exceed the percentage of the total increase,  after
the  date  hereof,  in consumer prices for services as  measured  by  the
United  States  Department of Labor Consumer Price  Index  entitled  "All
Services  Less  Rent"  or if such index no longer  exists,  a  comparable
index.  The consent or concurrence of any Unitholder hereunder shall  not
be  required for any such adjustment or increase.  The Depositor shall in
addition  be compensated for its costs incurred in providing  such  other
services  to  the Trust as the Trustee shall request.  Such  compensation
shall  be  charged by the Trustee, upon receipt of invoice therefor  from
the  Depositor,  against  the  Interest and  Principal  Accounts  of  the
respective Trusts on or before the Distribution Date on which such period
terminates.  If the cash balances in the Interest and Principal  Accounts
of  any  Trust  shall  be  insufficient to provide  for  amounts  payable
pursuant to this Section 4.05, the Trustee shall have the power  to  sell
(i)  Bonds of such Trust from the current list of Bonds designated to  be
sold  pursuant to Section 4.02 hereof, or (ii) if no such Bonds have been
so designated such Bonds of such Trust as the Trustee may see fit to sell
in  its  own  discretion, and to apply the proceeds of any such  sale  in
payment of the amounts payable pursuant to this Section 4.05.  Any moneys
payable  to the Depositor pursuant to this Section 4.05 shall be  secured
by  a prior lien on such Trust except that no such lien shall be prior to
any lien in favor of the Trustee under the provisions of Section 5.04.

                                ARTICLE V

                                 TRUSTEE

SECTION 5.01.   GENERAL DEFINITION OF TRUSTEE'S LIABILITIES,  RIGHTS  AND
DUTIES:  The Trustee shall in its discretion undertake such action as  it
may  deem  necessary at any and all times to protect each Trust  and  the
rights  and  interests of the Unitholders pursuant to the terms  of  this
Indenture,  PROVIDED,  HOWEVER,  that the  expenses  and  costs  of  such
actions, undertakings or proceedings shall be reimbursable to the Trustee
from the Interest and Principal Accounts of such Trust and the payment of
such  costs and expenses shall be secured by a prior lien on such  Trust.
In  addition to and notwithstanding the other duties, rights,  privileges
and liabilities of the Trustee as otherwise set forth the liabilities  of
the Trustee are further defined as follows:

          (a)    All  moneys deposited with or received  by  the  Trustee
     hereunder related to a Trust shall be held by it without interest in
     trust  as  part of such Trust or the Reserve Account of  such  Trust
     until required to be disbursed in accordance with the provisions  of

                                   -29-
<PAGE>
     this  Indenture  and  such  moneys will be  segregated  by  separate
     recordation  on  the trust ledger of the Trustee  so  long  as  such
     practice  preserves a valid preference under applicable law,  or  if
     such  preference is not so preserved the Trustee shall  handle  such
     moneys in such other manner as shall constitute the segregation  and
     holding  thereof  in  trust  within the meaning  of  the  Investment
     Company Act of 1940.

          (b)    The  Trustee shall be under no liability for any  action
     taken  in  good faith on any appraisal, paper, order, list,  demand,
     request, consent, affidavit, notice, opinion, direction, evaluation,
     endorsement, assignment, resolution, draft or other document whether
     or  not  of the same kind prima facie properly executed, or for  the
     disposition  of moneys, Bonds, Certificates or Book Entry  Positions
     pursuant to this Indenture, or in respect of any evaluation which it
     is  required  to make or is required or permitted to  have  made  by
     others  under this Indenture or otherwise, except by reason  of  its
     own  negligence, lack of good faith or willful misconduct,  provided
     that the Trustee shall not in any event be liable or responsible for
     any  evaluation made by the Depositor.  The Trustee may construe any
     of  the provisions of this Indenture, insofar as the same may appear
     to  be  ambiguous or inconsistent with any other provisions  hereof,
     and any construction of any such provisions hereof by the Trustee in
     good faith shall be binding upon the parties hereto.

          (c)   The Trustee shall not be responsible for or in respect of
     the  recitals herein, the validity or sufficiency of this  Indenture
     or  for the due execution hereof by the Depositor, or for the  form,
     character, genuineness, sufficiency, value or validity of any  Bonds
     (except  that the Trustee shall be responsible for the  exercise  of
     due  care  in determining the genuineness of Bonds delivered  to  it
     pursuant to contracts for the purchase of such Bonds) or for  or  in
     respect of the validity or sufficiency of any Certificates or of the
     due  execution thereof by the Depositor, or for the payment  by  the
     Insurer  of  amounts due under or the performance by the Insurer  of
     its  obligations in accordance with the Insurance, and  the  Trustee
     shall in no event assume or incur any liability, duty, or obligation
     to  any Unitholder or the Depositor other than as expressly provided
     for  herein.  The Trustee shall not be responsible for or in respect
     of the validity of any signature by or on behalf of the Depositor.

          (d)    The Trustee shall not be under any obligation to  appear
     in, prosecute or defend any action, which in its opinion may involve
     it  in  expense  or liability, unless as often as  required  by  the
     Trustee,  it  shall  be  furnished  with  reasonable  security   and
     indemnity against such expense or liability, and any pecuniary  cost
     of  the  Trustee from such actions shall be deductible  from  and  a
     charge  against the Interest and Principal Accounts of the  affected
     Trust or Trusts.

          (e)   The Trustee may employ agents, attorneys, accountants and
     auditors  and shall not be answerable for the default or  misconduct
     of  any  such  agents, attorneys, accountants or  auditors  if  such
     agents,  attorneys, accountants or auditors shall have been selected
     with  reasonable  care.   The Trustee shall be  fully  protected  in
     respect  of  any action under this Agreement taken, or suffered,  in

                                   -30-
<PAGE>
     good  faith  by the Trustee, in accordance with the opinion  of  its
     counsel.   The fees and expenses charged by such agents,  attorneys,
     accountants  or auditors shall constitute an expense of the  Trustee
     reimbursable  from  the  Interest  and  Principal  Accounts  of  the
     affected Trust as set forth in Section 5.04 hereof.

          (f)    If at any time the Depositor shall fail to undertake  or
     perform  any of the duties which by the terms of this Indenture  are
     required  by  it  to be undertaken or performed, or  such  Depositor
     shall become incapable of acting or shall be adjudged a bankrupt  or
     insolvent, or a receiver of such Depositor or of its property  shall
     be  appointed, or any public officer shall take charge or control of
     such  Depositor  or of its property or affairs for  the  purpose  of
     rehabilitation, conservation or liquidation, then in any such  case,
     the  Trustee may:  (1) appoint a successor depositor who  shall  act
     hereunder in all respects in place of such Depositor which successor
     shall  be  satisfactory to the Trustee, and which may be compensated
     at   rates  deemed  by  the  Trustee  to  be  reasonable  under  the
     circumstances,  by deduction ratably from the Interest  Accounts  of
     the  affected  Trusts or, to the extent funds are not  available  in
     such Account, from the Principal Accounts of the affected Trusts but
     no  such deduction shall be made exceeding such reasonable amount as
     the  Securities and Exchange Commission may prescribe in  accordance
     with  Section 26(a)(2)(C) of the Investment Company Act of 1940,  or
     (2)  terminate  and  liquidate  the affected  Trust  in  the  manner
     provided in Section 7.02.

          (g)    If (i) the value of any Trust as shown by any evaluation
     by  the  Trustee pursuant to Section 4.01 hereof shall be less  than
     twenty  per  cent (20%) of the aggregate principal amount  of  Bonds
     initially  deposited  in  such Trust,  or  (ii)  by  reason  of  the
     Depositor's redemption of Units of a Trust not theretofore sold, the
     net  worth of the Trust is reduced to less than forty per cent (40%)
     of  the  aggregate  principal amount of  Bonds  initially  deposited
     therein,  the  Trustee  may in its discretion,  and  shall  when  so
     directed  by the Depositor, terminate this Indenture and  the  trust
     created  hereby insofar as they related to such Trust and  liquidate
     such Trust, all in the manner provided in Section 7.02.

          (h)   In no event shall the Trustee be liable for any taxes  or
     other  governmental charges imposed upon or in respect of the  Bonds
     or upon the interest thereon or upon it as Trustee hereunder or upon
     or in respect of any Trust which it may be required to pay under any
     present  or  future law of the United States of America  or  of  any
     other taxing authority having jurisdiction in the premises. For  all
     such taxes and charges and for any expenses, including counsel fees,
     which the Trustee may sustain or incur with respect to such taxes or
     charges, the Trustee shall be reimbursed and indemnified out of  the
     Interest  and  Principal  Accounts of the affected  Trust,  and  the
     payment of such amounts so paid by the Trustee shall be secured by a
     prior lien on such Trust.

          (i)    The  Trustee except by reason of its own  negligence  or
     willful  misconduct  shall not be liable for  any  action  taken  or
     suffered  to be taken by it in good faith and believed by it  to  be
     authorized  or  within the discretion or rights or powers  conferred
     upon it by this Indenture.

                                   -31-
<PAGE>
SECTION 5.02.    BOOKS,  RECORDS AND REPORTS:   The  Trustee  shall  keep
proper books of record and account of all the transactions of each  Trust
and  Book Entry Positions recorded on the books of the Trustee under this
Indenture at its unit investment trust office including a record  of  the
name  and address of, and the Certificates issued by each Trust and  held
by,  every Unitholder, and such books and records of each Trust shall  be
open  to  inspection by any Unitholder of such Trust  at  all  reasonable
times  during  the  Trustee's usual business hours.   The  Trustee  shall
cause audited statements as to the assets and income of each Trust to  be
prepared on an annual basis by independent public accountants selected by
the Depositor, PROVIDED, HOWEVER, (i) if the Sponsor shall provide to the
Trustee a written representation concluding that in the best judgment  of
the  Sponsor ceasing to prepare such annual audited statement  would  not
have  a material adverse impact on the marketability of the Units in  the
secondary market or (ii) if the cost to a Trust for preparation  of  such
statements  shall  exceed an amount equivalent to $.05  per  Unit  on  an
annual  basis  then  the  Trustee shall not  be  required  to  have  such
statements prepared.

     To  the extent permitted under the Investment Company Act of 1940 as
evidenced  by  an opinion of counsel to the Depositor, the Trustee  shall
pay,  or  reimburse  to  the  Depositor  or  others,  the  costs  of  the
preparation  of  documents and information with  respect  to  each  Trust
required  by  law or regulation in connection with the maintenance  of  a
secondary market in units of each Trust.  Such costs may include but  are
not  limited  to  accounting and legal fees, blue  sky  registration  and
filing  fees, printing expenses and other reasonable expenses related  to
documents required under Federal and state securities laws.

     The Trustee shall make such annual or other reports as may from time
to time be required under any applicable state or federal statute or rule
or regulation thereunder.

SECTION 5.03.    INDENTURE AND LIST OF BONDS ON FILE:  The Trustee  shall
keep a certified copy or duplicate original of this Indenture on file  at
its  corporate  trust office available for inspection at  all  reasonable
times  during  the  Trustee's usual business  hours  by  any  Unitholder,
together with a current list of the Bonds in each Trust.

SECTION 5.04.    COMPENSATION:   With  respect  to  Insured  Trusts   and
Traditional Trusts (other than Compound Interest Traditional Trusts), for
services  performed under this Indenture prior to the date  indicated  in
Item  5(c)  of Schedule A hereto, the Trustee shall be paid at  the  rate
specified in Item 11(a) of Schedule A hereto, and on and after such date,
the  Trustee shall be paid at the rates specified in Item 11(b)  of  such
Schedule A.  With respect to Compound Interest Traditional Trusts,  after
the  15th  day  of  the  month next succeeding the  month  in  which  the
Indenture was entered into as indicated in Item 2(a) of Schedule  A,  the
Trustee shall be paid $0.20 per annum per $1,000 principal amount payable
at  maturity of Bonds in such Compound Interest Traditional Trust.   Such
compensation with respect to each Trust shall be computed on the basis of
the  largest  principal amount of Bonds in such trust at any time  during
the  period  with  respect to which such compensation is being  computed.
The  Trustee  may  periodically  adjust  the  compensation  provided  for
                                   -32-
<PAGE>
pursuant  to  this  paragraph in response to fluctuations  in  short-term
interest   rates  and  average  cash  balances  of  the  Trust   accounts
(reflecting the cost to the Trustee of advancing funds to a Trust to meet
scheduled  distributions  and  changes in anticipated  earnings  on  cash
balances) and may, in addition, adjust such portion of its fee as is  not
computed  by  reference  to the cash balances in the  Trust  accounts  in
accordance  with  the percentage of the total increase,  after  the  date
hereof, in consumer prices for services as measured by the United  States
Department  of  Labor Consumer Price Index entitled  "All  Services  Less
Rent"  or,  if  such  index no longer exists, a  comparable  index.   The
consent  or concurrence of any Unitholder hereunder shall not be required
for  any such adjustment or increase.  Such compensation shall be charged
by  the Trustee against the Interest and Principal Accounts of each Trust
on  or  before  the  Distribution Date on which such  period  terminates;
PROVIDED, HOWEVER, that such compensation shall be deemed to provide only
for the usual, normal and proper functions undertaken as Trustee pursuant
to  this  Indenture.  The Trustee shall charge the Interest and Principal
Accounts  relating to such Trust for any and all expenses, including  the
fees  of counsel which may be retained by the Trustee in connection  with
its  activities  hereunder and disbursements incurred hereunder  and  any
extraordinary  services performed by the Trustee  hereunder  relating  to
such  Trust.   The Trustee shall be indemnified ratably by  the  affected
Trust  and  held  harmless against any loss or liability accruing  to  it
without  negligence, bad faith or willful misconduct on its part, arising
out  of  or in connection with the acceptance or administration  of  this
trust,  including  the  costs and expenses (including  counsel  fees)  of
defending itself against any claim of liability in the premises.  If  the
cash  balances  in the Interest and Principal Accounts  of  the  affected
Trust  shall  be insufficient to provide for amounts payable pursuant  to
this  Section 5.04 the Trustee shall have the power to sell (i) Bonds  of
the  affected Trust from the current list of Bonds designated to be  sold
pursuant  to Section 4.02 hereof, or (ii) if no such Bonds have  been  so
designated such Bonds of the affected Trust as the Trustee may see fit to
sell in its own discretion, and to apply the proceeds of any such sale in
payment  of  the  amounts  payable pursuant to  this  Section 5.04.   The
Trustee shall not be liable or responsible in any way for depreciation or
loss  incurred  by  reason of any sale of Bonds  made  pursuant  to  this
Section 5.04.  Any moneys payable to the Trustee pursuant to this Section
shall be secured by a prior lien on the affected Trust.

     SECTION 5.05.    REMOVAL AND RESIGNATION OF TRUSTEE; SUCCESSOR:  The
following provisions shall provide for the removal and resignation of the
Trustee and the appointment of any successor trustee:

         (a)   The Trustee or any trustee or trustees hereafter appointed
     may  resign  and  be  discharged  of  the  trusts  created  by  this
     Indenture,  by  executing  an instrument  in  writing  resigning  as
     Trustee  of  such trusts and filing the same with the Depositor  and
     mailing a copy of a notice of resignation to all Unitholders then of
     record,  not less than sixty days before the date specified in  such
     instrument when, subject to Section 5.05(e), such resignation is  to
     take  effect.   Upon  receiving  such  notice  of  resignation,  the
     Depositor  shall promptly appoint a successor trustee as hereinafter
     provided,  by  written instrument, in duplicate, one copy  of  which
     shall  be  delivered to the resigning Trustee and one  copy  to  the
     successor  trustee.   In case at any time 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,

                                   -33-
<PAGE>
     or any public officer shall take charge or control of the Trustee or
     of  its  property  or  affairs for the purposes  of  rehabilitation,
     conservation or liquidation, then in any such case the Depositor may
     remove  the  Trustee  and  appoint a successor  trustee  by  written
     instrument,  in duplicate, one copy of which shall be  delivered  to
     the  Trustee  so  removed  and one copy to  the  successor  trustee;
     provided  that  a  notice  of  such removal  and  appointment  of  a
     successor  trustee  shall  be  mailed  by  the  Depositor  to   each
     Unitholder then of record.

          (b)    Any successor trustee appointed hereunder shall execute,
     acknowledge and deliver to the Depositor and to the retiring Trustee
     an   instrument  accepting  such  appointment  hereunder,  and  such
     successor trustee without any further act, deed or conveyance  shall
     become vested with all the rights, powers, duties and obligations of
     its  predecessor  hereunder with like effect as if originally  named
     Trustee herein and shall be bound by all the terms and conditions of
     this  Indenture.   Upon the request of such successor  trustee,  the
     Depositor  and  the  retiring Trustee shall,  upon  payment  of  any
     amounts  due  the  retiring Trustee, or provision  therefor  to  the
     satisfaction  of  such  retiring Trustee,  execute  and  deliver  an
     instrument acknowledged by it transferring to such successor trustee
     all  the rights and powers of the retiring Trustee; and the retiring
     Trustee  shall  transfer,  deliver and pay  over  to  the  successor
     trustee  all  Bonds  and moneys at the time held  by  it  hereunder,
     together  with all necessary instruments of transfer and  assignment
     or  other  documents  properly executed  necessary  to  effect  such
     transfer and such of the records or copies thereof maintained by the
     retiring Trustee in the administration hereof as may be requested by
     the  successor trustee, and shall thereupon be discharged  from  all
     duties  and  responsibilities under this  Indenture.   The  retiring
     Trustee shall, nevertheless, retain a lien upon all Bonds and moneys
     at  the time held by it hereunder to secure any amounts then due the
     retiring Trustee.

          (c)    In  case  at any time the Trustee shall  resign  and  no
     successor  trustee  shall  have been  appointed  and  have  accepted
     appointment within thirty days after notice of resignation has  been
     received by the Depositor, the retiring Trustee may forthwith  apply
     to  a  court  of  competent jurisdiction for the  appointment  of  a
     successor trustee.  Such court may thereupon, after such notice,  if
     any,  as  it  may  deem  proper and prescribe, appoint  a  successor
     trustee.

          (d)    Any corporation into which any trustee hereunder may  be
     merged  or  with  which it may be consolidated, or  any  corporation
     resulting  from  any merger or consolidation to  which  any  trustee
     hereunder  shall  be a party, shall be the successor  trustee  under
     this  Indenture  without  the execution  or  filing  of  any  paper,
     instrument  or  further act to be done on the part  of  the  parties
     hereto, anything herein, or in any agreement relating to such merger
     or  consolidation,  by which any such trustee  may  seek  to  retain
     certain powers, rights and privileges theretofore obtaining for  any
     period  of  time  following  such merger or  consolidation,  to  the
     contrary notwithstanding.

          (e)   Any resignation or removal of the Trustee and appointment
     of  a  successor  trustee  pursuant to  this  Section  shall  become
     effective upon acceptance of appointment by the successor trustee as
     provided in subsection (b) hereof.

                                   -34-
<PAGE>
SECTION 5.06.    QUALIFICATIONS  OF TRUSTEE:   The  Trustee  shall  be  a
corporation  organized and doing business under the laws  of  the  United
States  or  any  state thereof, which is authorized under  such  laws  to
exercise  corporate  trust powers and having at all  times  an  aggregate
capital, surplus, and undivided profits of not less than $5,000,000.

                               ARTICLE VI

                          RIGHTS OF UNITHOLDERS

SECTION 6.01.    BENEFICIARIES OF TRUST:  By the purchase and  acceptance
or  other  lawful delivery and acceptance of a Certificate of a Trust  or
the  purchase  and acceptance of any Book Entry Position or other  lawful
delivery and acceptance of such Book Entry Position including receipt  of
a  Book  Entry Confirmation, the Unitholder (i) shall be deemed to  be  a
beneficiary  of such Trust and vested with all right, title and  interest
in  such Trust to the extent of the Unit or Units or fraction thereof set
forth  and evidenced by such Certificate or Book Entry Position and  (ii)
shall  assent  to  and  be  bound by the terms  and  conditions  of  this
Indenture.

SECTION 6.02.   RIGHTS, TERMS AND CONDITIONS:  In addition to  the  other
rights  and  powers set forth in the other provisions and  conditions  of
this Indenture the Unitholders shall have the following rights and powers
and shall be subject to the following terms and conditions:

          (a)   A Unitholder may at any time prior to the termination  of
     the  Trust  tender  his  Units  to the  Trustee  for  redemption  in
     accordance with Section 4.02.

          (b)    The  death  or  incapacity of any Unitholder  shall  not
     operate  to  terminate  this Indenture or  the  related  Trust,  nor
     entitle his legal representatives or heirs to claim an accounting or
     to  take  any  action  or  proceeding  in  any  court  of  competent
     jurisdiction for a partition or winding up of the Trust Fund or  the
     related  Trust,  nor  otherwise affect the rights,  obligations  and
     liabilities  of the parties hereto or any of them.  Each  Unitholder
     expressly waives any right he may have under any rule of law, or the
     provisions  of any statute, or otherwise, to require the Trustee  at
     any  time to account, in any manner other than as expressly provided
     in  this  Indenture, in respect of the Bonds or moneys from time  to
     time received, held and applied by the Trustee hereunder.

          (c)    No  Unitholder shall have any right to vote  or  in  any
     manner  otherwise control the operation and management of the  Trust
     Fund,  the  related Trust or the obligations of the parties  hereto,
     nor  shall anything herein set forth, or contained in the  terms  of
     the  Certificates, be construed so as to constitute the  Unitholders
     from  time  to  time as partners or members of an  association;  nor
     shall  any  Unitholder  ever be under any  liability  to  any  third
     persons  by  reason  of  any action taken by  the  parties  to  this
     Indenture, or any other cause whatsoever.

                                   -35-
<PAGE>

                              ARTICLE VII

             ADDITIONAL COVENANTS; MISCELLANEOUS PROVISIONS

SECTION 7.01.   AMENDMENTS:  This Indenture may be amended from  time  to
time  by  the parties hereto or their respective successors, without  the
consent of any of the Unitholders (a) to cure any ambiguity or to correct
or  supplement any provision contained herein which may be  defective  or
inconsistent with any other provision contained herein; or  (b)  to  make
such  other provision in regard to matters or questions arising hereunder
as shall not adversely affect the interests of the Unitholders; PROVIDED,
HOWEVER,  that the parties hereto may not amend this Indenture so  as  to
(1)  increase the number of Units issuable hereunder above the number  of
Units  as indicated in Item 4 of Schedule A hereto except as provided  in
Section 4.04  hereof or such lesser amount as may be outstanding  at  any
time  during  the term of this Indenture or (2) subject to Sections  3.08
and  3.14, permit the deposit or acquisition hereunder of obligations  or
other securities either in addition to or in substitution for any of  the
Bonds.

     Promptly after the execution of any such amendment the Trustee shall
furnish  written notification to all the outstanding Unitholders  of  the
substance of such amendment.

SECTION 7.02.    TERMINATION:   Each  Trust  shall  terminate  upon   the
maturity, redemption, sale or other disposition as the case may be of the
last  Bond  held  in such Trust unless sooner terminated as  hereinbefore
specified and may be terminated at any time by the written consent of one
hundred  per  cent of the Unitholders of the respective Trust;  PROVIDED,
that in no event shall any Trust continue beyond the date as indicated in
Item 8   of  Schedule A  hereto.   Written  notice  of  any  termination,
specifying  for Certificated Unitholders the time or times at  which  the
Certificated  Unitholders of such Trust may surrender their  Certificates
for  cancellation shall be given by the Trustee to each such Certificated
Unitholder  at  his address appearing on the registration  books  of  the
Trustee.  Written notice of any termination shall be given by the Trustee
to   each  Book  Entry  Unitholder  at  his  address  appearing  on   the
registration  books of the Trustee.  Within a reasonable period  of  time
after  the  termination of a Trust the Trustee shall fully liquidate  the
Bonds of such Trust then held, if any, and shall:

          (a)   deduct from the Interest Account of such Trust or, to the
     extent  that  funds  are  not available in such  Account,  from  the
     Principal  Account of such Trust and pay to itself  individually  an
     amount  equal  to  the sum of (1) its accrued compensation  for  its
     ordinary recurring services in connection with such Trust,  (2)  any
     compensation  due  it for its extraordinary services  in  connection
     with  such  Trust  and  (3) any costs, expenses  or  indemnities  in
     connection with such Trust as provided herein;

          (b)   deduct from the Interest Account of such Trust or, to the
     extent  that  funds  are  not available in such  Account,  from  the
     Principal Account of such Trust and pay accrued and unpaid  fees  of
     bond counsel in connection with such Trust, if any, as directed  and
     certified to by the Depositor;

                                   -36-
<PAGE>
          (c)    deduct  from the Interest Account of such Trust  or  the
     Principal Account of such Trust any amounts which may be required to
     be  deposited  in the Reserve Account of such Trust to  provide  for
     payment  of  any applicable taxes or other governmental charges  and
     any  other  amounts which may be required to meet expenses  incurred
     under this Indenture in connection with such Trust;

          (d)    distribute  to  each  Unitholder  of  such  Trust,  upon
     surrender  for  cancellation of his Certificate or Certificates,  if
     any,  such  holder's pro rata share of the balance of  the  Interest
     Account of such Trust;

          (e)    distribute  to  each  Unitholder  of  such  Trust,  upon
     surrender, for cancellation by the Unitholder of his Certificate  or
     Certificates,  if  any,  such Unitholder's pro  rata  share  of  the
     balance of the Principal Account of such Trust; and

          (f)    together  with such distribution to each  Unitholder  as
     provided for in (d) and (e), furnish to each such Unitholder a final
     distribution  statement  as of the date of the  computation  of  the
     amount  distributable to Unitholders, setting  forth  the  data  and
     information  in  substantially the form and manner provided  for  in
     Section 3.06 hereof.

     The  amounts to be so distributed to each Unitholder shall  be  that
pro  rata  share  of  the  balance of the total  Interest  and  Principal
Accounts  of  such  Trust as shall be represented by  the  Units  therein
evidenced  by the outstanding Certificate or Certificates held of  record
by  such Unitholder and/or as evidenced on the records of the Trustees as
Book Entry Positions.

     The  Trustee shall be under no liability with respect to moneys held
by  it  in  the Interest, Reserve and Principal Accounts of a Trust  upon
termination  except  to  hold the same in trust  without  interest  until
disposed of in accordance with the terms of this Indenture.

     In  the event that all of the Certificated Unitholders of such Trust
shall not surrender their Certificates for cancellation within six months
after  the  time  specified in the above-mentioned  written  notice,  the
Trustee shall give a second written notice to such remaining Certificated
Unitholders to surrender their written Certificates for cancellation  and
receive the liquidation distribution with respect thereto.  If within one
year after the second notice all the Certificates of such Trust shall not
have  been  surrendered for cancellation, the Trustee may take steps,  or
may appoint an agent to take appropriate steps, to contact such remaining
Certificated  Unitholders concerning surrender of their Certificates  and
the  cost thereof shall be paid out of the moneys and other assets  which
remain in such Trust hereunder.

SECTION 7.03.    CONSTRUCTION:  This Indenture is executed and  delivered
in  the State of New York, and all laws or rules of construction of  such
State  shall  govern the rights of the parties hereto and the Unitholders
and the interpretation of the provisions hereof.

                                   -37-
<PAGE>
SECTION 7.04.    REGISTRATION  OF  UNITS:   The  Depositor   agrees   and
undertakes  to  register  the  Units with  the  Securities  and  Exchange
Commission or other applicable governmental agency pursuant to applicable
Federal or State statutes, if such registration shall be required, and to
do  all  things  that may be necessary or required to  comply  with  this
provision  during the term of the Trust Fund created hereunder,  and  the
Trustee shall incur no liability or be under any obligation or expense in
connection therewith.

SECTION 7.05.    WRITTEN  NOTICE:   Any  notice,  demand,  direction   or
instruction  to be given to the Depositor hereunder shall be  in  writing
and  shall be duly given if mailed or delivered to the Depositor  at  333
West  Wacker Drive, Chicago, Illinois 60606, or at such other address  as
shall  be  specified  by the Depositor to the Trustee  in  writing.   Any
notice, demand, direction or instruction to be given to the Trustee shall
be  in  writing  and shall be duly given if mailed or  delivered  to  the
corporate trust office of the Trustee, 770 Broadway, New York,  New  York
10003,  Attention:  Unit Investment Trust Division or such other  address
as  shall  be specified to the Depositor by the Trustee in writing.   Any
notice  to  be given to the Unitholders shall be duly given if mailed  or
delivered  to each Unitholder at the address of such holder appearing  on
the registration books of the Trustee.

SECTION 7.06.    SEVERABILITY:  If any one  or  more  of  the  covenants,
agreements, provisions or terms of this Indenture shall be held  contrary
to  any  express provision of law or contrary to policy of  express  law,
though  not expressly prohibited, or against public policy, or shall  for
any  reason  whatsoever be held invalid, then such covenants, agreements,
provisions  or  terms  shall  be  deemed  severable  from  the  remaining
covenants, agreements, provisions or terms of this Indenture and shall in
no  way affect the validity or enforceability of the other provisions  of
this Indenture or of the Certificates or the rights of the Unitholders.

SECTION 7.07.     DISSOLUTION  OF  DEPOSITOR  NOT  TO   TERMINATE:    The
dissolution of the Depositor from or for any cause whatsoever  shall  not
operate to terminate this Indenture insofar as the duties and obligations
of the Trustee are concerned.

                                   -38-
<PAGE>
     IN  WITNESS WHEREOF, John Nuveen & Co. Incorporated, has caused this
Trust Indenture and Agreement to be executed by its President, one of its
Vice Presidents or one of its Assistant Vice Presidents and its corporate
seal  to be hereto affixed and attested by its Secretary or its Assistant
Secretary  and  United States Trust Company of New York has  caused  this
Trust  Indenture  and  Agreement  to be  executed  by  one  of  its  Vice
Presidents  or  Assistant Vice Presidents and its corporate  seal  to  be
hereto  affixed and attested to by one of its Assistant Secretaries;  all
as of the day, month and year first above written.

                                    JOHN NUVEEN & CO. INCORPORATED,
                                              Depositor

   
                                        /s/ Larry Woods Martin
                                    By_____________________________
                                          Authorized Officer

(SEAL)

Attest:

     /s/ Morrison C. Warren
By_______________________________
       Assistant Secretary

                                    UNITED STATES TRUST COMPANY OF NEW
                                       YORK, TRUSTEE


                                           /s/ Timothy Kelley
                                    By_________________________________
                                         Assistant Vice President

(SEAL)

Attest:


      /s/ Robert E. Lisk
By_______________________________
      Assistant Secretary
    

                                   -39-

                                                                      
<PAGE>                                                                        
                                                                              
Exhibit 1.1(b)                                                                
                                                                              
                                                                              
                                                                              
                                                                              
                                 SCHEDULE A                                   
                                                                              
                                                                              
Series 723                                           April 8, 1994            
                                                                              
Item 1.  This Indenture relates to the Nuveen Tax-Exempt Unit Trust           
         Series 723.                                                          
                                                                              
Item 2.  The date of this Indenture is April 8, 1994.                         
                                                                              
Item 3.  Series 723 shall initially contain the following Trust:        
                                                                              
         (a)   National Insured Trust 267                                     
                                                                              
                                                                              
Item 4.  The Trust shall initially consist of the following number of Units: 
                                                                              
         (a)   National Insured Trust                  100,000 Units          
                                                                              
                                                                              
Item 5.  (a) The amount of the second distribution from the Interest          
             Account of the Trust will be as follows:             
                                                                              
         ( 1)  National Insured Trust                  $ .3826 per Unit       
                                                                              
         (b) The date of the second distribution from the Interest Account    
             of the Trust will be as follows:                     
                                                                              
         ( 1)  National Insured Trust                  May 15, 1994           
                                                                              
         (c) The record date for the second distribution from the             
             Interest Account of the Trust will be as follows:      
                                                                              
         ( 1)  National Insured Trust                  May 1, 1994            
                                                                              
                                                                              
         PAGE 2                                                               
                                                                              
                                                                              
Item 6.  Record dates for subsequent semi-annual distributions from the       
         Interest Account of the Trust will be the 1st day of May and 
         November of each year.                                
                                                                            
                                                                              
Item 7.  (a) Record dates for distibutions from the Principal Account of 
             of the Trust will be the first day of May and November of 
             each year.                                           
                                                                           
         (b) The first record date for distributions from the Principal       
             Account of the Trust will be May 1, 1994. 
                                                                   
Item 8.  The Trust shall in no event continue beyond the end of the calendar  
         year preceding the fiftieth anniversary of the execution of this     
         Indenture.                        
                                                                              
                                                                              
Item 9.  Quarterly distributions from the Interest Account of the Trust 
         will be computed as of the 1st day of February, May, August,  
         and November.                                                      
                                                                              
                                                                              
Item 10. Certain deductions from the Interest Account by the Trustee          
         will commence as follows:                                            
                                                                              
         (a)   National Insured Trust                  May 1, 1994           

Item 11. (a) For services performed prior to the date indicated in Item 5(c)
         of this Schedule A, the Trustee shall be paid at the following annual
         rates per $1,000 of principal amount of Bonds:

         (1)    National Insured Trust                      $1.6321

         (b) For services performed on and after the date indicated in 
         Item 5(c) of this Schedule A, the Trustee shall be paid at the 
         following annual rates per $1,000 of principal amount of Bonds:

         (1)    National Insured Trust 
               
                Monthly Plan of Distribution                $1.6321
                Quarterly Plan of Distribution              $1.3121 
                Semi-Annual Plan of Distribution            $1.1221
                        
                                                                              
                            ADDITIONAL SCHEDULES                              
                                                                              
                                                                              
                         BONDS INITIALLY DEPOSITED                            
                                                                              
                  NUVEEN TAX-EXEMPT UNIT TRUST SERIES 723                     
                                                                              
                                                                              
                                                                              
                                                                              
Incorporated herein and made a part hereof as indicated below are the         
corresponding portions of the 'Schedule of Investments at Date of Deposit'   
contained in the Prospectus dated the Date of Deposit and relating to the     
above-named Series:                                                           
                                                                              
         Schedule B:  National Insured Trust 267                              


<PAGE>

EXHIBIT 3.1

(ON CHAPMAN AND CUTLER LETTERHEAD)

4/08/94


John Nuveen & Co. Incorporated
333 W. Wacker Drive
Chicago, Illinois  60606

RE:  Nuveen Tax-Exempt Unit Trust, Series 723

Gentlemen:

    We have served as counsel for you, as depositor of Nuveen Tax-Exempt Unit
Trust, Series 723 (hereinafter referred to as the "Fund"), in connection
with the issuance under the Trust Indenture and Agreement dated the date 
hereof between John Nuveen & Co. Incorporated, as Depositor, and United 
States Trust Company of New York, as Trustee, of Units of fractional 
undivided interest in the one or more Trusts of said Fund (hereinafter 
referred to as the "Units").
 
    In connection therewith, we have examined such pertinent records and
documents and matters of law as we have deemed necessary in order to enable us
to express the opinions hereinafter set forth.

    Based upon the foregoing, we are of the opinion that:

   1.   The execution and delivery of the Trust Indenture and Agreement and
the establishment of book entry positions and the execution and issuance
of certificates evidencing the Units in the Trusts of the Fund have been duly
authorized; and

    2.   The book entry positions and certificates evidencing the Units in
the Trusts of the Fund when duly executed and delivered or duly established
by the Depositor and the Trustee in accordance with the aforementioned Trust
Indenture and Agreement, will constitute valid and binding obligations of such
Trust and the Depositor in accordance with the terms thereof.

    We hereby consent to the filing of this opinion as an exhibit to the
Registration Statement (File No. 33-52527) relating to the Units referred
to above and to the use of our name and to the reference to our firm in said
Registration Statement and in the related Prospectus.

Respectfully submitted,



CHAPMAN AND CUTLER

<PAGE>

EXHIBIT 3.2

(ON CHAPMAN AND CUTLER LETTERHEAD)

4/08/94

John Nuveen & Co. Incorporated
333 W. Wacker Drive
Chicago, Illinois  60606

RE:  Nuveen Tax-Exempt Unit Trust, Series 723

Gentlemen:

    We have served as counsel for you, as Depositor of Nuveen Tax-Exempt Unit
Trust, Series 723 (the "Fund") in connection with the issuance under the
Trust Indenture and Agreement, dated the date hereof between John Nuveen & Co.
Incorporated, as Depositor, and United States Trust Company of New York, as
Trustee, of Units of fractional undivided interest (the "Units"), as evidenced
by book entry position or certificate, if requested by the purchaser of Units,
in the one or more Trusts of said Fund.

    We have also served as counsel for you in connection with all previous
Series of the Nuveen Tax-Exempt Unit Trust and as such have previously 
examined such pertinent records and documents and matters of law as we have 
deemed necessary, including (but not limited to) the Trust Indenture and 
Agreements with respect to those series.  We have also examined such 
pertinent records and documents and matters of law as we have deemed 
necessary including (but not limited to) the Trust Indenture and Agreement 
relating to Nuveen Tax-Exempt Unit Trust, Series 723.

    Based upon the foregoing, and upon such matters of law as we consider
to be applicable we are of the opinion that, under existing federal income
law:

    (i)  For Federal income tax purposes, the Trust will not be
taxable as an association but will be governed by the provisions of 
Subchapter J (relating to Trusts) of Chapter 1, Internal Revenue Code of 
1986 (the "Code").

    (ii) Each Unitholder will be considered as owning a pro rata
share of each asset of the respective Trust of the Fund in the proportion
that the number of Units of such Trust held by him bears to the total number
of outstanding Units of such Trust. Under Subpart E, Subchapter J of Chapter
1 of the Code, income of each Trust will be treated as income of each
Unitholder thereof in the proportion described and an item of Fund income
will have the same character in the hands of a Unitholder as it would have in
the hands of the Trustee.  Accordingly, to the extent that the income of a
Trust consists of interest and original issue discount excludable from gross
income under Section 103 of the Code, such income will be excludable from
federal gross income of the Unitholder, except in the case of a Unitholder
who is a substantial user (or a person related to such user) of a facility
financed through issuance of any industrial development bonds or certain
private activity bonds held by the Trust. In the case of such Unitholder who
is a substantial user (and no other) interest received and original issue
discount with respect to his Units attributable to such industrial
development bonds or such private activity bonds is includable in his gross
income. In the case of certain corporations, interest on the Bonds is included
in computing the alternative minimum tax pursuant to Sections 56(f) and 56(g)
of the Code, the enviromental tax (the "Superfund Tax") imposed by Sections
59A of the Code, and the branch profits tax imposed by Section 884 of the Code
with repect to U.S. branches of foreign corporations.

    (iii) Gain or loss will be recognized to a Unitholder upon
redemption or sale of his Units.  Such gain or loss is measured by comparing 
the proceeds of such redemption or sale with the adjusted basis of such Units.
Before adjustment, such basis would normally be cost if the Unitholder had
acquired his Units by purchase, plus his aliquot share of advances by the
Trustee to the Trust to pay interest on Bonds delivered after the Unitholder's
settlement date to the extent that such interest accrued on the Bonds during
the period from the Unitholder's settlement date to the date such Bonds are
delivered to the Trust, but only to the extent that such advances are to be
repaid to the Trustee out of interest received by the Fund with respect to
such Bonds.  In addition, such basis will be increased by both the
Unitholder's aliquot share of the accrued original issued discount with
respect to each Bond held by the Trust with respect to which there was an
original issue discount and reduced by the annual amortization of bond
premium, if any, on Bonds held by the Trust.

<PAGE>

    (iv) If the Trustee disposes of a Trust asset (whether by sale, payment on
maturity, redemption or otherwise), gain or loss is recognized to the
Unitholder and the amount thereof is measured by comparing the
Unitholder's aliquot share of the total proceeds from the transaction
with his basis for his fractional interest in the asset disposed of.  Such 
basis is ascertained by apportioning the tax basis for his Units among each 
of the Trust assets (as of the date on which his Units were acquired) ratably 
according to their values as of the valuation date nearest the date on which 
he purchased such Units.  A Unitholder's basis in his Units and of his
fractional interest in each Trust asset must be reduced by the amount of his 
aliquot share of interest received by the Fund, if any, on Bonds delivered
after the Unitholder's settlement date to the extent that such
interest accrued on the Bonds during the period from the Unitholder's
settlement date to the date such Bonds are delivered to the Trust, must be 
reduced by the annual amortization of bond premium, if any, on Bonds held by 
the Trust and must be increased by the Unitholder's share of accrued
original issue discount with respect to each Bond which, at the time
the Bond was issued, had original issue discount.

     (v)  In the case of any Bond held by the Trust where the "stated
redemption price at maturity" exceeds the "issue price," such excess shall
be original issue discount.  With respect to each Unitholder, upon the
purchase of his Units subsequent to the original issuance of Bonds held by the
Trust Section 1272(a)(7) of the Code provides for a reduction in the accrued
"daily portion" of such original issue discount upon the purchase of a Bond
subsequent to the Bond's original issue, under certain circumstances.  In the
case of any Bond held by the Trust the interest on which is excludable from
gross income under Section 103 of the Code, any original issue discount which
accrues with respect thereto will be treated as interest which is excludable
from gross income under Section 103 of the Code.

    (vi)  In the case of any Bond which matures within one year of the date
issued, the accrual of tax-exempt original issue discount will generally be
computed daily on a ratable basis unless the Unitholder elects to accrue such
discount under a constant yield method, compounded daily.

    (vii)  In the case of any Bond which does not mature within one year
after the date issued, tax-exempt original issue discount will accrue
daily, computed generally under a constant yield method, compounded
semiannually (with straight line interpolation between compounding dates).

    (viii)  In the case of any Trust for which Municipal Bond Investors 
Assurance Corporation ("MBIA") insurance with respect to each of the Bonds 
deposited therein has been obtained by the Depositor or the issuer or 
underwriter of the Bonds, we have examined the form of MBIA's policy or several
policies of insurance (the "Policies") which have been delivered to the 
Trustee.  Assuming issuance of Policies in such form, in our opinion, any 
amounts paid under said Policies representing maturing interest on defaulted 
obligations held by the Trustee will be excludable from Federal gross income 
if, and to the same extent as, such interest would have been so excludable if 
paid by the respective issuer.  Paragraph (ii) of this opinion is accordingly 
applicable to Policy proceeds representing maturing interest.
<PAGE>

    Because the Trusts do not include any "specified private activity bonds"
within the meaning of Section 57(a)(5) of the Code issued on or after August
8, 1986, none of the Trust Fund's interest income shall be treated as an item
of tax preference when computing the alternative minimum tax.  In the case of
corporations, for taxable years beginning after December 31, 1986, the alter-
native minimum tax and the Superfund Tax depend upon the corporation's
alternative minimum taxable income ("AMTI"), which is the corporation's
taxable income with certain adjustments.

    Pursuant to Section 56(f) of the Code, one of the adjustment
items used in computing AMTI and the Superfund Tax of a corporation
(other than an S Corporation, Regulated Investment Company, Real Estate
Investment Trust or REMIC) is an amount equal to 50% of the excess of such
corporation's "adjusted net book income" over an amount equal to its AMTI
(before such adjustment item and the alternative tax net operating
loss deduction).  For taxable years beginning after 1989, such adjustment item
will be 75% of the excess of such corporation's "adjusted current earnings"
over an amount equal to its AMTI (before such adjustment item and the
alternative tax net operating net operating loss deduction) pursuant to
Section 56(g) of the Code.  Both "adjusted net book income" and "adjusted
current earnings" include all tax-exempt interest, including interest on all
Bonds in the Trust, and tax-exempt original issue discount.

   Effective for tax returns filed after December 31, 1987,  all taxpayers
are required to disclose to the Internal Revenue Service the amount of
tax-exempt interest earned during the year.

    Section 265 of the Code generally provides for a reduction
in each taxable year of 100% of the otherwise deductible interest on
indebtedness incurred or continued by financial institutions, to which either 
Section 585 or Section 593 of the Code applies, to purchase or carry 
obligations acquired after August 7, 1986, the interest on which is exempt
from federal income taxes for such taxable year.  Under rules prescribed by 
Section 265, the amount of interest otherwise deductible by such financial
institutions in any taxable year which is deemed to be attributable to 
tax-exempt obligations acquired after August 7, 1986 will be the amount
that bears the same ratio to the interest deduction otherwise allowable
(determined without regard to Section 265) to the taxpayer for the taxable
year as the taxpayer's average adjusted basis (within the meaning of Section
1016) of tax-exempt obligations acquired after August 7, 1986, bears to
such average adjusted basis for all assets of the taxpayer, unless such 
financial institution can otherwise establish under regulations to be
prescribed by the Secretary of the Treasury, the amount of interest on 
indebtedness incurred or continued to purchase or carry such obligations.

<PAGE>

    We also call attention to the fact that, under Section 265 of the
Code,  interest on indebtedness incurred or continued to purchase or carry
Units by taxpayers other than certain financial institutions, as referred to
above, is not deductible for Federal income tax purposes. Under rules used by
the Internal Revenue Service for determining when borrowed funds are con-
sidered used for the purpose of purchasing or carrying particular assets, the
purchase of Units may be considered to have been made with borrowed funds even
though the borrowed funds are not directly traceable to the purchase of Units.
However, these rules generally do not apply to interest paid on indebtedness
incurred for expenditures of a personal nature such as a mortgage incurred to
purchase or improve a personal residence.

    "The Revenue Reconciliation Act of 1993" (the "Tax Act") subjects tax-exempt
bonds to the market discount rules of the Code effective for bonds purchased
after April 30, 1993.  In general, market discount is the amount (if any) by
which the stated redemption price at maturity exceeds an investor's purchase
price (except to the extent that such difference, if any, is attributable to
original issue discount not yet accrued).  Market discount can arise based on
the price a Trust pays for Bonds or the price a Unitholder pays for his or her
Units.  Under the Tax Act, accretion of market discount is taxable as ordinary
income; under prior law, the accretion had been treated as capital gain.  Market
discount that accretes while a Trust holds a Bond would be recognized as
ordinary income by the Unitholders when principal payments are received on the
Bond, upon sale or at redemption (including early redemption), or upon the sale
or redemption of his or her Units, unless a Unitholder elects to include market
discount in taxable income as it accrues.
     
    We hereby consent to the filing of this opinion as an exhibit to the
Registration Statement (File No. 33-52527) relating to the Units referred
to above and to the use of our name and to the reference to our firm in said
Registration Statement and in the related Prospectus.

Respectfully submitted,


CHAPMAN AND CUTLER


<PAGE>

EXHIBIT 4.1

(ON STANDARD & POOR'S CORPORATION LETTERHEAD)

4/08/94

John Nuveen & Co. Incorporated
333 W. Wacker Drive
Chicago, IL  60606

RE: Nuveen Tax-Exempt Unit Trust, Series 723

Gentlemen:

    This is in response to your requests regarding the above-
captioned fund which consists of separate underlying unit investment trusts
(the "trusts"), SEC file # 33-52527.

    We have reviewed the information presented to us and have assigned a 'AAA'
rating to the units of each insured trust and a 'AAA' rating to the securities
contained in each insured trust.  The ratings are direct reflections of the
portfolio of each insured trust, which will be composed solely of securities
covered by bond insurance policies that insure against default in the payment
of principal and interest on the securities contained in each insured trust
for as long as they remain outstanding.  We understand that the bonds
described in the prospectus are the same as those in the attached list.
Since such policies have been issued by MBIA which has been assigned a 'AAA'
claims paying ability rating by S&P, S&P has assigned a 'AAA' rating to
the units of each insured trust and a 'AAA' rating to the securities contained
in each insured trust.

    You have permission to use the name of Standard & Poor's Corporation and
the above-assigned rating in connection with your dissemination of
information relating to the insured trusts provided that it is understood that
the ratings are not "market" ratings nor recommendations to buy, hold or sell
the units of the insured trusts or the securities contained in the insured
trusts.  Further, it should be understood the rating on the units of each
insured trust does not take into account the extent to which the trust's
expenses or portfolio asset sales for less than the trust's purchase price
will reduce payment to the unit holders of the interest and principal
required to be paid on the portfolio assets.  S&P reserves the right to
advise its own clients, subscribers, and the public of the ratings.  S&P
relies on the sponsor and its counsel, accountants, and other experts for the
accuracy and completeness of the information submitted in connection with the
ratings.  S&P does not independently verify the truth or accuracy of any such
information.

    This letter evidences our consent to the use of the name of Standard &
Poor's Corporation in connection with the rating assigned to the units of
each insured trust in the registration statement or prospectus relating to the
units and the trusts.  However, this letter should not be construed as a
consent by us, within the meaning of Section 7 of the Securities Act of 1933,
to the use of the name of Standard & Poor's Corporation in connection with the
ratings assigned to the securities contained in the insured trusts.  You are
hereby authorized to file a copy of this letter with the Securities and
Exchange Commission.

    Please be certain to send us three copies of your final prospectus as
soon as it becomes available.  Should we not receive them within a reasonable
amount of time after the closing or should they not conform to the
certification received by us, we reserve the right to nullify the ratings.

Very truly yours,

STANDARD & POOR'S CORPORATION


 By Vincent S. Orgo



<PAGE>

EXHIBIT 4.2

(On Kenny S+P Evaluation Services Inc., Letterhead)

4/08/94

John Nuveen & Company
333 West Wacker Drive
Chicago, IL 60606

RE:  Nuveen Tax Exempt Unit Trust, Series 723

Gentlemen:

      We have examined the Registration Statement File No. 33-52527,
for the above captioned trust.  We hereby acknowledge that Kenny S+P
Evaluation Services, a division of Kenny Information Systems, Inc. is
currently acting as the evaluator for the trust.  We hereby consent to the
use in the Registration Statement of the reference to Kenny S+P Evaluation
Services, a division of Kenny Information Systems, Inc. as evaluator.

     In addition, we hereby confirm that the ratings indicated in the
Registration Statement for the respective bonds comprising the trust
portfolio are the ratings currently indicated in our KENNYBASE database.

     You are hereby authorized to file a copy of this letter with
the Securities and Exchange Commission.

 Sincerely,


 F.A. Shinal
 Executive Vice President



<PAGE>


EXHIBIT 4.3

(ON CARTER LEDYARD & MILBURN LETTERHEAD)

4/08/94


Nuveen Tax-Exempt Unit Trust, Series 723
c/o John Nuveen & Co. Incorporated,
as Depositor of Nuveen Tax-Exempt Unit
Trust, Series 723
333 W. Wacker Drive
Chicago, Illinois  60606

RE:  Nuveen Tax-Exempt Unit Trust, Series 723

Dear Sirs:

    We hereby consent to the reference to our firm under the caption "What is
the Tax Status of Unitholders?" in the Registration Statement and
related Prospectus of Nuveen Tax-Exempt Unit Trust, Series 723 for the
registration of units of fractional undivided interest in the Fund in the 
aggregate principal amount as set forth in the Closing Memorandum dated 
today's date.
 
Very truly yours,


CARTER, LEDYARD & MILBURN
 


<PAGE>

                                   MEMORANDUM

                 Nuveen Tax-Exempt Unit Trust, Series 723
                               File No. 33-52527


    The Prospectus and the Indenture filed with Amendment No. 2 of the
Registration Statement on Form S-6 have been revised to reflect information
regarding the execution of the Indenture and the deposit of bonds on 4/08/94,
and to set forth certain statistical data based thereon.  In addition, there 
are a number of other changes from the Prospectus as originally filed to which
reference is made, including the increase in the size of the Fund, a
corresponding increase in the number of Units and a change in the trust 
constituting the Fund.  All references to the Units, prices and related
statistical data will apply to each trust of the Fund and the Units thereof.


    Except for such updating, an effort has been made to set forth below each 
of the changes and also to reflect the same by marking the Prospectus 
transmitted with the Amendment.  In addition, the subject and verb tense in 
the descriptive sections of the Prospectus has been adjusted from plural to
singular terminology to reflect that only one Trust comprises the Fund.

                                    FORM S-6

    FACING SHEET.  The file number is now shown.

                                 THE PROSPECTUS

     PAGE 3.       The "Estimated Long-Term Return" and "Estimated Current
Return" to Unitholders under each Trust under each of the distribution
plans are stated.

     PAGES 4 - 5.  Essential information for the Trust, including
applicable footnotes, has been completed for this Series.

     PAGES 5 - 6.  The date of the Indenture has been inserted in Section 1
along with the size and number of Units of the Trust.

     PAGE 8 et seq. The following information for the Trust appears on the
pages relating to such trust:

         The estimated daily accrual of interest under the plans of
         distribution for the Trust

         Data regarding the composition of the portfolio of the Trust

         Concentrations of issues by purpose in the Trust

         The approximate percentage of the bonds in the
         portfolio of the Trust acquired in distributions where
         the Sponsor was either the sole underwriter or manager
         or member of the underwriting syndicate

         The percentage of "when issued" bonds in the portfolio
         of the Trust

         The schedule of investments for the Trust, including
         the notes thereto

         The Record Dates and Distribution Dates for
         interest distributions for the Trust

         The distribution table for the Trust

         Taxable Equivalent Estimated Current Return Tables for residents
         of the respective jurisdictions

         The statement of condition for the Trust
         and the accountant's report with regard thereto.

         The description of the trustee's fee

         The breakpoints for reduced sales charges 
         
         The procedures for Unitholders to aggregate sales in order to 
         reduce sales charges

                              THE INDENTURE

The Schedules to the Indenture have been completed.


CHAPMAN AND CUTLER


Chicago, Illinois

4/08/94
                                                                      
<PAGE>                                                                        
                                                                              
                                                                              
  STATEMENT OF UNITHOLDER ESTIMATED CASH FLOW                                 
                                                                              
Series:0723   Day of Deposit:April 8, 1994                                    
                                                                              
                                                                              
<TABLE>                                                                       
                                                                              
National Insured Trust 267                                                    
                                                                              
<CAPTION>   MONTHLY   QUARTERLY  SEMI-ANNUALLY                                
          ------------------------------------                                
<S>         <C>         <C>         <C>                                       
IRR:         5.870       5.854       5.822                                    
CUR RET:     5.887       5.919       5.937                                    
L/T RET:     5.915       5.944       5.963                                    
                                                                              
</TABLE>                                                                      
                                                                              
<TABLE>                                                                       
           ESTIMATED PRINCIPAL AND INTEREST                                   
                DISTRIBUTIONS PER UNIT                                        
          ------------------------------------                                
<CAPTION> MON/YR      MONTHLY   QUARTERLY  SEMI-ANNUALLY                      
- ----------------------------------------------                                
          <S>       <C>         <C>         <C>                               
          APR 94    -101.860    -101.860    -101.860                          
                                                                              
          MAY 94       0.3826      0.1275      0.0637                         
          JUN 94       0.4991      0.0000      0.0000                         
          JUL 94       0.4991      0.0000      0.0000                         
          AUG 94       0.4991      1.5054      0.0000                         
          SEP 94       0.4991      0.0000      0.0000                         
          OCT 94       0.4991      0.0000      0.0000                         
          NOV 94       0.4991      1.5054      3.0204                         
          DEC 94       0.4991      0.0000      0.0000                         
          JAN 95       0.4991      0.0000      0.0000                         
          FEB 95       0.4991      1.5054      0.0000                         
          MAR 95       0.4991      0.0000      0.0000                         
                                                                              
          APR 95       0.4991      0.0000      0.0000                         
          MAY 95       0.4991      1.5054      3.0204                         
          JUN 95       0.4991      0.0000      0.0000                         
          JUL 95       0.4991      0.0000      0.0000                         
          AUG 95       0.4991      1.5054      0.0000                         
          SEP 95       0.4991      0.0000      0.0000                         
          OCT 95       0.4991      0.0000      0.0000                         
          NOV 95       0.4991      1.5054      3.0204                         
          DEC 95       0.4991      0.0000      0.0000                         
          JAN 96       0.4991      0.0000      0.0000                         
          FEB 96       0.4991      1.5054      0.0000                         
          MAR 96       0.4991      0.0000      0.0000                         
                                                                              
          APR 96       0.4991      0.0000      0.0000                         
          MAY 96       0.4991      1.5054      3.0204                         
          JUN 96       0.4991      0.0000      0.0000                         
          JUL 96       0.4991      0.0000      0.0000                         
          AUG 96       0.4991      1.5054      0.0000                         
          SEP 96       0.4991      0.0000      0.0000                         
          OCT 96       0.4991      0.0000      0.0000                         
          NOV 96       0.4991      1.5054      3.0204                         
          DEC 96       0.4991      0.0000      0.0000                         
          JAN 97       0.4991      0.0000      0.0000                         
          FEB 97       0.4991      1.5054      0.0000                         
          MAR 97       0.4991      0.0000      0.0000                         
                                                                              
          APR 97       0.4991      0.0000      0.0000                         
          MAY 97       0.4991      1.5054      3.0204                         
          JUN 97       0.4991      0.0000      0.0000                         
          JUL 97       0.4991      0.0000      0.0000                         
          AUG 97       0.4991      1.5054      0.0000                         
          SEP 97       0.4991      0.0000      0.0000                         
          OCT 97       0.4991      0.0000      0.0000                         
          NOV 97       0.4991      1.5054      3.0204                         
          DEC 97       0.4991      0.0000      0.0000                         
          JAN 98       0.4991      0.0000      0.0000                         
          FEB 98       0.4991      1.5054      0.0000                         
          MAR 98       0.4991      0.0000      0.0000                         
                                                                              
          APR 98       0.4991      0.0000      0.0000                         
          MAY 98       0.4991      1.5054      3.0204                         
          JUN 98       0.4991      0.0000      0.0000                         
          JUL 98       0.4991      0.0000      0.0000                         
          AUG 98       0.4991      1.5054      0.0000                         
          SEP 98       0.4991      0.0000      0.0000                         
          OCT 98       0.4991      0.0000      0.0000                         
          NOV 98       0.4991      1.5054      3.0204                         
          DEC 98       0.4991      0.0000      0.0000                         
          JAN 99       0.4991      0.0000      0.0000                         
          FEB 99       0.4991      1.5054      0.0000                         
          MAR 99       0.4991      0.0000      0.0000                         
                                                                              
                                                                              
<PAGE>
                                                                              
                                                                              
          APR 99       0.4991      0.0000      0.0000                         
          MAY 99       0.4991      1.5054      3.0204                         
          JUN 99       0.4991      0.0000      0.0000                         
          JUL 99       0.4991      0.0000      0.0000                         
          AUG 99       0.4991      1.5054      0.0000                         
          SEP 99       0.4991      0.0000      0.0000                         
          OCT 99       0.4991      0.0000      0.0000                         
          NOV 99       0.4991      1.5054      3.0204                         
          DEC 99       0.4991      0.0000      0.0000                         
          JAN 00       0.4991      0.0000      0.0000                         
          FEB 00       0.4991      1.5054      0.0000                         
          MAR 00       0.4991      0.0000      0.0000                         
                                                                              
          APR 00       0.4991      0.0000      0.0000                         
          MAY 00       0.4991      1.5054      3.0204                         
          JUN 00       0.4991      0.0000      0.0000                         
          JUL 00       0.4991      0.0000      0.0000                         
          AUG 00       0.4991      1.5054      0.0000                         
          SEP 00       0.4991      0.0000      0.0000                         
          OCT 00       0.4991      0.0000      0.0000                         
          NOV 00       0.4991      1.5054      3.0204                         
          DEC 00       0.4991      0.0000      0.0000                         
          JAN 01       0.4991      0.0000      0.0000                         
          FEB 01       0.4991      1.5054      0.0000                         
          MAR 01       0.4991      0.0000      0.0000                         
                                                                              
          APR 01       0.4991      0.0000      0.0000                         
          MAY 01       0.4991      1.5054      3.0204                         
          JUN 01       0.4991      0.0000      0.0000                         
          JUL 01       0.4991      0.0000      0.0000                         
          AUG 01       0.4991      1.5054      0.0000                         
          SEP 01       0.4991      0.0000      0.0000                         
          OCT 01       0.4991      0.0000      0.0000                         
          NOV 01       0.4991      1.5054      3.0204                         
          DEC 01       0.4991      0.0000      0.0000                         
          JAN 02       0.4991      0.0000      0.0000                         
          FEB 02       0.4991      1.5054      0.0000                         
          MAR 02       0.4991      0.0000      0.0000                         
                                                                              
          APR 02       0.4991      0.0000      0.0000                         
          MAY 02       0.4991      1.5054      3.0204                         
          JUN 02       0.4991      0.0000      0.0000                         
          JUL 02       0.4991      0.0000      0.0000                         
          AUG 02       0.4991      1.5054      0.0000                         
          SEP 02       0.4991      0.0000      0.0000                         
          OCT 02       0.4991      0.0000      0.0000                         
          NOV 02       0.4991      1.5054      3.0204                         
          DEC 02      10.4991     10.0000     10.0000                         
          JAN 03       0.4456      0.0000      0.0000                         
          FEB 03       0.4456      1.3979      0.0000                         
          MAR 03       0.4456      0.0000      0.0000                         
                                                                              
          APR 03       0.4456      0.0000      0.0000                         
          MAY 03       0.4456      1.3442      2.7508                         
          JUN 03       0.4456      0.0000      0.0000                         
          JUL 03       0.4456      0.0000      0.0000                         
          AUG 03       0.4456      1.3442      0.0000                         
          SEP 03       0.4456      0.0000      0.0000                         
          OCT 03       0.4456      0.0000      0.0000                         
          NOV 03       0.4456      1.3442      2.6969                         
          DEC 03       0.4456      0.0000      0.0000                         
          JAN 04       0.4456      0.0000      0.0000                         
          FEB 04       0.4456      1.3442      0.0000                         
          MAR 04       0.4456      0.0000      0.0000                         
                                                                              
          APR 04       0.4456      0.0000      0.0000                         
          MAY 04      10.4456     11.3442     12.6969                         
          JUN 04       0.3932      0.0000      0.0000                         
          JUL 04       0.3932      0.0000      0.0000                         
          AUG 04       0.3932      1.1861      0.0000                         
          SEP 04       0.3932      0.0000      0.0000                         
          OCT 04       0.3932      0.0000      0.0000                         
          NOV 04      10.3932     11.1861     12.3798                         
          DEC 04       0.3408      0.0000      0.0000                         
          JAN 05       0.3408      0.0000      0.0000                         
          FEB 05       0.3408      1.0280      0.0000                         
          MAR 05       0.3408      0.0000      0.0000                         
                                                                              
          APR 05       0.3408      0.0000      0.0000                         
          MAY 05       0.3408      1.0280      2.0626                         
          JUN 05      15.3408     15.0000     15.0000                         
          JUL 05       0.2621      0.0000      0.0000                         
          AUG 05       0.2621      0.8698      0.0000                         
          SEP 05       0.2621      0.0000      0.0000                         
          OCT 05       0.2621      0.0000      0.0000                         
          NOV 05       0.2621      0.7908      1.6661                         
          DEC 05       0.2621      0.0000      0.0000                         
          JAN 06       0.2621      0.0000      0.0000                         
          FEB 06       0.2621      0.7908      0.0000                         
          MAR 06       0.2621      0.0000      0.0000                         
                                                                              
                                                                              
<PAGE>
                                                                              
                                                                              
          APR 06       0.2621      0.0000      0.0000                         
          MAY 06       0.2621      0.7908      1.5869                         
          JUN 06       0.2621      0.0000      0.0000                         
          JUL 06       0.2621      0.0000      0.0000                         
          AUG 06       0.2621      0.7908      0.0000                         
          SEP 06       0.2621      0.0000      0.0000                         
          OCT 06       0.2621      0.0000      0.0000                         
          NOV 06       0.2621      0.7908      1.5869                         
          DEC 06       0.2621      0.0000      0.0000                         
          JAN 07       0.2621      0.0000      0.0000                         
          FEB 07       0.2621      0.7908      0.0000                         
          MAR 07       0.2621      0.0000      0.0000                         
                                                                              
          APR 07       0.2621      0.0000      0.0000                         
          MAY 07       0.2621      0.7908      1.5869                         
          JUN 07       0.2621      0.0000      0.0000                         
          JUL 07       0.2621      0.0000      0.0000                         
          AUG 07       0.2621      0.7908      0.0000                         
          SEP 07       0.2621      0.0000      0.0000                         
          OCT 07       0.2621      0.0000      0.0000                         
          NOV 07       0.2621      0.7908      1.5869                         
          DEC 07       0.2621      0.0000      0.0000                         
          JAN 08       0.2621      0.0000      0.0000                         
          FEB 08       0.2621      0.7908      0.0000                         
          MAR 08       0.2621      0.0000      0.0000                         
                                                                              
          APR 08       0.2621      0.0000      0.0000                         
          MAY 08       0.2621      0.7908      1.5869                         
          JUN 08       0.2621      0.0000      0.0000                         
          JUL 08       0.2621      0.0000      0.0000                         
          AUG 08       0.2621      0.7908      0.0000                         
          SEP 08       0.2621      0.0000      0.0000                         
          OCT 08       0.2621      0.0000      0.0000                         
          NOV 08       0.2621      0.7908      1.5869                         
          DEC 08       0.2621      0.0000      0.0000                         
          JAN 09       0.2621      0.0000      0.0000                         
          FEB 09       0.2621      0.7908      0.0000                         
          MAR 09       0.2621      0.0000      0.0000                         
                                                                              
          APR 09       0.2621      0.0000      0.0000                         
          MAY 09       0.2621      0.7908      1.5869                         
          JUN 09       0.2621      0.0000      0.0000                         
          JUL 09       0.2621      0.0000      0.0000                         
          AUG 09       0.2621      0.7908      0.0000                         
          SEP 09       0.2621      0.0000      0.0000                         
          OCT 09       0.2621      0.0000      0.0000                         
          NOV 09       0.2621      0.7908      1.5869                         
          DEC 09       0.2621      0.0000      0.0000                         
          JAN 10       0.2621      0.0000      0.0000                         
          FEB 10       0.2621      0.7908      0.0000                         
          MAR 10       0.2621      0.0000      0.0000                         
                                                                              
          APR 10       0.2621      0.0000      0.0000                         
          MAY 10       0.2621      0.7908      1.5869                         
          JUN 10       0.2621      0.0000      0.0000                         
          JUL 10       0.2621      0.0000      0.0000                         
          AUG 10       0.2621      0.7908      0.0000                         
          SEP 10       0.2621      0.0000      0.0000                         
          OCT 10       0.2621      0.0000      0.0000                         
          NOV 10       0.2621      0.7908      1.5869                         
          DEC 10       0.2621      0.0000      0.0000                         
          JAN 11       0.2621      0.0000      0.0000                         
          FEB 11       0.2621      0.7908      0.0000                         
          MAR 11       0.2621      0.0000      0.0000                         
                                                                              
          APR 11       0.2621      0.0000      0.0000                         
          MAY 11       0.2621      0.7908      1.5869                         
          JUN 11       0.2621      0.0000      0.0000                         
          JUL 11       0.2621      0.0000      0.0000                         
          AUG 11       0.2621      0.7908      0.0000                         
          SEP 11       0.2621      0.0000      0.0000                         
          OCT 11       0.2621      0.0000      0.0000                         
          NOV 11       0.2621      0.7908      1.5869                         
          DEC 11       0.2621      0.0000      0.0000                         
          JAN 12       0.2621      0.0000      0.0000                         
          FEB 12       0.2621      0.7908      0.0000                         
          MAR 12       0.2621      0.0000      0.0000                         
                                                                              
          APR 12       0.2621      0.0000      0.0000                         
          MAY 12       0.2621      0.7908      1.5869                         
          JUN 12       0.2621      0.0000      0.0000                         
          JUL 12       0.2621      0.0000      0.0000                         
          AUG 12       0.2621      0.7908      0.0000                         
          SEP 12       0.2621      0.0000      0.0000                         
          OCT 12       0.2621      0.0000      0.0000                         
          NOV 12       0.2621      0.7908      1.5869                         
          DEC 12       0.2621      0.0000      0.0000                         
          JAN 13       0.2621      0.0000      0.0000                         
          FEB 13       0.2621      0.7908      0.0000                         
          MAR 13       0.2621      0.0000      0.0000                         
                                                                              
                                                                              
<PAGE>
                                                                              
                                                                              
          APR 13       0.2621      0.0000      0.0000                         
          MAY 13       0.2621      0.7908      1.5869                         
          JUN 13      10.2621     10.0000     10.0000                         
          JUL 13       0.2138      0.0000      0.0000                         
          AUG 13       0.2138      0.6937      0.0000                         
          SEP 13       0.2138      0.0000      0.0000                         
          OCT 13       0.2138      0.0000      0.0000                         
          NOV 13       0.2138      0.6452      1.3434                         
          DEC 13       0.2138      0.0000      0.0000                         
          JAN 14      10.2138     10.0000     10.0000                         
          FEB 14       0.1631      0.5941      0.0000                         
          MAR 14       0.1631      0.0000      0.0000                         
                                                                              
          APR 14       0.1631      0.0000      0.0000                         
          MAY 14       0.1631      0.4921      1.0899                         
          JUN 14       0.1631      0.0000      0.0000                         
          JUL 14       0.1631      0.0000      0.0000                         
          AUG 14       0.1631      0.4921      0.0000                         
          SEP 14       0.1631      0.0000      0.0000                         
          OCT 14       0.1631      0.0000      0.0000                         
          NOV 14       0.1631      0.4921      0.9875                         
          DEC 14       0.1631      0.0000      0.0000                         
          JAN 15       0.1631      0.0000      0.0000                         
          FEB 15       0.1631      0.4921      0.0000                         
          MAR 15       0.1631      0.0000      0.0000                         
                                                                              
          APR 15       0.1631      0.0000      0.0000                         
          MAY 15       0.1631      0.4921      0.9875                         
          JUN 15       0.1631      0.0000      0.0000                         
          JUL 15       0.1631      0.0000      0.0000                         
          AUG 15       0.1631      0.4921      0.0000                         
          SEP 15       0.1631      0.0000      0.0000                         
          OCT 15       0.1631      0.0000      0.0000                         
          NOV 15       0.1631      0.4921      0.9875                         
          DEC 15       0.1631      0.0000      0.0000                         
          JAN 16       0.1631      0.0000      0.0000                         
          FEB 16       0.1631      0.4921      0.0000                         
          MAR 16       0.1631      0.0000      0.0000                         
                                                                              
          APR 16       0.1631      0.0000      0.0000                         
          MAY 16       0.1631      0.4921      0.9875                         
          JUN 16       0.1631      0.0000      0.0000                         
          JUL 16       0.1631      0.0000      0.0000                         
          AUG 16       0.1631      0.4921      0.0000                         
          SEP 16       0.1631      0.0000      0.0000                         
          OCT 16       0.1631      0.0000      0.0000                         
          NOV 16       0.1631      0.4921      0.9875                         
          DEC 16       0.1631      0.0000      0.0000                         
          JAN 17       0.1631      0.0000      0.0000                         
          FEB 17       0.1631      0.4921      0.0000                         
          MAR 17       0.1631      0.0000      0.0000                         
                                                                              
          APR 17       0.1631      0.0000      0.0000                         
          MAY 17       0.1631      0.4921      0.9875                         
          JUN 17       0.1631      0.0000      0.0000                         
          JUL 17       0.1631      0.0000      0.0000                         
          AUG 17       0.1631      0.4921      0.0000                         
          SEP 17       0.1631      0.0000      0.0000                         
          OCT 17       0.1631      0.0000      0.0000                         
          NOV 17       0.1631      0.4921      0.9875                         
          DEC 17       0.1631      0.0000      0.0000                         
          JAN 18       0.1631      0.0000      0.0000                         
          FEB 18       0.1631      0.4921      0.0000                         
          MAR 18       0.1631      0.0000      0.0000                         
                                                                              
          APR 18       0.1631      0.0000      0.0000                         
          MAY 18       0.1631      0.4921      0.9875                         
          JUN 18       0.1631      0.0000      0.0000                         
          JUL 18       0.1631      0.0000      0.0000                         
          AUG 18       0.1631      0.4921      0.0000                         
          SEP 18       0.1631      0.0000      0.0000                         
          OCT 18       0.1631      0.0000      0.0000                         
          NOV 18       0.1631      0.4921      0.9875                         
          DEC 18       0.1631      0.0000      0.0000                         
          JAN 19       0.1631      0.0000      0.0000                         
          FEB 19       0.1631      0.4921      0.0000                         
          MAR 19       0.1631      0.0000      0.0000                         
                                                                              
          APR 19       0.1631      0.0000      0.0000                         
          MAY 19       0.1631      0.4921      0.9875                         
          JUN 19       0.1631      0.0000      0.0000                         
          JUL 19       0.1631      0.0000      0.0000                         
          AUG 19       0.1631      0.4921      0.0000                         
          SEP 19       0.1631      0.0000      0.0000                         
          OCT 19       0.1631      0.0000      0.0000                         
          NOV 19       0.1631      0.4921      0.9875                         
          DEC 19       0.1631      0.0000      0.0000                         
          JAN 20       0.1631      0.0000      0.0000                         
          FEB 20       0.1631      0.4921      0.0000                         
          MAR 20       0.1631      0.0000      0.0000                         
                                                                              
                                                                              
<PAGE>
                                                                              
                                                                              
          APR 20       0.1631      0.0000      0.0000                         
          MAY 20       0.1631      0.4921      0.9875                         
          JUN 20       0.1631      0.0000      0.0000                         
          JUL 20       0.1631      0.0000      0.0000                         
          AUG 20       0.1631      0.4921      0.0000                         
          SEP 20       0.1631      0.0000      0.0000                         
          OCT 20       0.1631      0.0000      0.0000                         
          NOV 20       0.1631      0.4921      0.9875                         
          DEC 20       0.1631      0.0000      0.0000                         
          JAN 21       0.1631      0.0000      0.0000                         
          FEB 21       0.1631      0.4921      0.0000                         
          MAR 21       0.1631      0.0000      0.0000                         
                                                                              
          APR 21       0.1631      0.0000      0.0000                         
          MAY 21       0.1631      0.4921      0.9875                         
          JUN 21       0.1631      0.0000      0.0000                         
          JUL 21       0.1631      0.0000      0.0000                         
          AUG 21       0.1631      0.4921      0.0000                         
          SEP 21       0.1631      0.0000      0.0000                         
          OCT 21       0.1631      0.0000      0.0000                         
          NOV 21       0.1631      0.4921      0.9875                         
          DEC 21       0.1631      0.0000      0.0000                         
          JAN 22       0.1631      0.0000      0.0000                         
          FEB 22       0.1631      0.4921      0.0000                         
          MAR 22       0.1631      0.0000      0.0000                         
                                                                              
          APR 22       0.1631      0.0000      0.0000                         
          MAY 22       0.1631      0.4921      0.9875                         
          JUN 22       0.1631      0.0000      0.0000                         
          JUL 22       0.1631      0.0000      0.0000                         
          AUG 22       0.1631      0.4921      0.0000                         
          SEP 22       0.1631      0.0000      0.0000                         
          OCT 22       0.1631      0.0000      0.0000                         
          NOV 22       0.1631      0.4921      0.9875                         
          DEC 22       0.1631      0.0000      0.0000                         
          JAN 23       0.1631      0.0000      0.0000                         
          FEB 23       0.1631      0.4921      0.0000                         
          MAR 23       0.1631      0.0000      0.0000                         
                                                                              
          APR 23       0.1631      0.0000      0.0000                         
          MAY 23       0.1631      0.4921      0.9875                         
          JUN 23       0.1631      0.0000      0.0000                         
          JUL 23       0.1631      0.0000      0.0000                         
          AUG 23       0.1631      0.4921      0.0000                         
          SEP 23       0.1631      0.0000      0.0000                         
          OCT 23       0.1631      0.0000      0.0000                         
          NOV 23       0.1631      0.4921      0.9875                         
          DEC 23       0.1631      0.0000      0.0000                         
          JAN 24       0.1631      0.0000      0.0000                         
          FEB 24       0.1631      0.4921      0.0000                         
          MAR 24       0.1631      0.0000      0.0000                         
                                                                              
          APR 24       0.1631      0.0000      0.0000                         
          MAY 24       0.1631      0.4921      0.9875                         
          JUN 24       0.1631      0.0000      0.0000                         
          JUL 24      10.1631     10.0000     10.0000                         
          AUG 24       0.1200      0.4487      0.0000                         
          SEP 24       0.1200      0.0000      0.0000                         
          OCT 24       0.1200      0.0000      0.0000                         
          NOV 24       0.1200      0.3621      0.8136                         
          DEC 24       0.1200      0.0000      0.0000                         
          JAN 25       0.1200      0.0000      0.0000                         
          FEB 25       0.1200      0.3621      0.0000                         
          MAR 25       0.1200      0.0000      0.0000                         
                                                                              
          APR 25       0.1200      0.0000      0.0000                         
          MAY 25       0.1200      0.3621      0.7266                         
          JUN 25       0.1200      0.0000      0.0000                         
          JUL 25       0.1200      0.0000      0.0000                         
          AUG 25       0.1200      0.3621      0.0000                         
          SEP 25       0.1200      0.0000      0.0000                         
          OCT 25       0.1200      0.0000      0.0000                         
          NOV 25       5.1200      5.3621      5.7266                         
          DEC 25       0.0979      0.0000      0.0000                         
          JAN 26       0.0979      0.0000      0.0000                         
          FEB 26       0.0979      0.2955      0.0000                         
          MAR 26       0.0979      0.0000      0.0000                         
                                                                              
          APR 26       0.0979      0.0000      0.0000                         
          MAY 26       0.0979      0.2955      0.5930                         
          JUN 26       0.0979      0.0000      0.0000                         
          JUL 26       0.0979      0.0000      0.0000                         
          AUG 26       0.0979      0.2955      0.0000                         
          SEP 26       0.0979      0.0000      0.0000                         
          OCT 26       0.0979      0.0000      0.0000                         
          NOV 26       0.0979      0.2955      0.5930                         
          DEC 26       0.0979      0.0000      0.0000                         
          JAN 27       0.0979      0.0000      0.0000                         
          FEB 27       0.0979      0.2955      0.0000                         
          MAR 27       0.0979      0.0000      0.0000                         
                                                                              
                                                                              
<PAGE>
                                                                              
                                                                              
          APR 27       0.0979      0.0000      0.0000                         
          MAY 27       0.0979      0.2955      0.5930                         
          JUN 27       0.0979      0.0000      0.0000                         
          JUL 27       0.0979      0.0000      0.0000                         
          AUG 27       0.0979      0.2955      0.0000                         
          SEP 27       0.0979      0.0000      0.0000                         
          OCT 27       0.0979      0.0000      0.0000                         
          NOV 27       0.0979      0.2955      0.5930                         
          DEC 27       0.0979      0.0000      0.0000                         
          JAN 28       0.0979      0.0000      0.0000                         
          FEB 28       0.0979      0.2955      0.0000                         
          MAR 28       0.0979      0.0000      0.0000                         
                                                                              
          APR 28       0.0979      0.0000      0.0000                         
          MAY 28       0.0979      0.2955      0.5930                         
          JUN 28       0.0979      0.0000      0.0000                         
          JUL 28       0.0979      0.0000      0.0000                         
          AUG 28       0.0979      0.2955      0.0000                         
          SEP 28       0.0979      0.0000      0.0000                         
          OCT 28       0.0979      0.0000      0.0000                         
          NOV 28       0.0979      0.2955      0.5930                         
          DEC 28       0.0979      0.0000      0.0000                         
          JAN 29       0.0979      0.0000      0.0000                         
          FEB 29       0.0979      0.2955      0.0000                         
          MAR 29       0.0979      0.0000      0.0000                         
                                                                              
          APR 29       0.0979      0.0000      0.0000                         
          MAY 29       0.0979      0.2955      0.5930                         
          JUN 29       0.0979      0.0000      0.0000                         
          JUL 29       0.0979      0.0000      0.0000                         
          AUG 29       0.0979      0.2955      0.0000                         
          SEP 29       0.0979      0.0000      0.0000                         
          OCT 29       0.0979      0.0000      0.0000                         
          NOV 29       0.0979      0.2955      0.5930                         
          DEC 29       0.0979      0.0000      0.0000                         
          JAN 30       0.0979      0.0000      0.0000                         
          FEB 30       0.0979      0.2955      0.0000                         
          MAR 30       0.0979      0.0000      0.0000                         
                                                                              
          APR 30       0.0979      0.0000      0.0000                         
          MAY 30       0.0979      0.2955      0.5930                         
          JUN 30       0.0979      0.0000      0.0000                         
          JUL 30       0.0979      0.0000      0.0000                         
          AUG 30       0.0979      0.2955      0.0000                         
          SEP 30      10.0979     10.0000     10.0000                         
          OCT 30       0.0507      0.0000      0.0000                         
          NOV 30       0.0507      0.2006      0.4977                         
          DEC 30       0.0507      0.0000      0.0000                         
          JAN 31       0.0507      0.0000      0.0000                         
          FEB 31       0.0507      0.1531      0.0000                         
          MAR 31       0.0507      0.0000      0.0000                         
                                                                              
          APR 31       0.0507      0.0000      0.0000                         
          MAY 31       0.0507      0.1531      0.3071                         
          JUN 31       0.0507      0.0000      0.0000                         
          JUL 31       0.0507      0.0000      0.0000                         
          AUG 31       0.0507      0.1531      0.0000                         
          SEP 31       0.0507      0.0000      0.0000                         
          OCT 31       0.0507      0.0000      0.0000                         
          NOV 31       0.0507      0.1531      0.3071                         
          DEC 31       0.0507      0.0000      0.0000                         
          JAN 32       0.0507      0.0000      0.0000                         
          FEB 32       0.0507      0.1531      0.0000                         
          MAR 32       0.0507      0.0000      0.0000                         
                                                                              
          APR 32       0.0507      0.0000      0.0000                         
          MAY 32       0.0507      0.1531      0.3071                         
          JUN 32       0.0507      0.0000      0.0000                         
          JUL 32       0.0507      0.0000      0.0000                         
          AUG 32       0.0507      0.1531      0.0000                         
          SEP 32       0.0507      0.0000      0.0000                         
          OCT 32       0.0507      0.0000      0.0000                         
          NOV 32       0.0507      0.1531      0.3071                         
          DEC 32       0.0507      0.0000      0.0000                         
          JAN 33      10.0507     10.1020     10.1023                         
                                                                              
</TABLE>                                                                      
                                                                              


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