BANC ONE CORP /OH/
SC 13D, 1997-01-07
NATIONAL COMMERCIAL BANKS
Previous: EATON VANCE SPECIAL INVESTMENT TRUST, 497J, 1997-01-07
Next: FIRST VIRGINIA BANKS INC, 4, 1997-01-07



<PAGE>   1
                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                             -----------------------

                                  SCHEDULE 13D

                    Under the Securities Exchange Act of 1934
                              (Amendment No. )(1/)

                              LIBERTY BANCORP, INC.
 ------------------------------------------------------------------------------
                                (Name of Issuer)

                     COMMON STOCK, PAR VALUE $0.01 PER SHARE
 ------------------------------------------------------------------------------
                         (Title of Class of Securities)

                                   530175 10 8
 ------------------------------------------------------------------------------
                                 (CUSIP Number)

                             Kenneth L. Wagner, Esq.
                                Legal Department
                              BANC ONE CORPORATION
                                 P.O. Box 710158
                            Columbus, Ohio 43271-0158
                                 (614) 248-5304
 ------------------------------------------------------------------------------
                  (Name, Address and Telephone Number of Person
                Authorized to Receive Notices and Communications)

                                DECEMBER 28, 1996
 ------------------------------------------------------------------------------
             (Date of Event Which Requires Filing of this Statement)

If the filing person has previously filed a statement on Schedule 13G to report
the acquisition which is the subject of this Schedule 13D, and is filing this
schedule because of Rule 13d-1(b)(3) or (4), check the following box / /.

Note:  Six copies of this statement, including all exhibits, should be filed
with the Commission.  See Rule 13d-1(a) for other parties to whom copies are
to be sent.

                         (Continued on following pages)
                             (Page 1 of 79 Pages)

- ------------------------------
(1/) The remainder of this cover page shall be filled out for a reporting
person's initial filing on this form with respect to the subject class of
securities, and for any subsequent amendment containing information which would
alter disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 or otherwise subject to the liabilities of that section of the Act but
shall be subject to all other provisions of the Act (however, see the Notes).


<PAGE>   2



                                  SCHEDULE 13D

 CUSIP NO.  530175 10 8                      PAGE   2   OF   79   PAGES
          --------------                          -----    ------
- ------------------------------------------------------------------------------
    1     NAME OF REPORTING PERSONS
          S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

              BANC ONE CORPORATION
              IRS Identification No. 31-0738296
- ------------------------------------------------------------------------------
    2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*         (a) / /
                                                                    (b) / /
- ------------------------------------------------------------------------------
    3     SEC USE ONLY

- ------------------------------------------------------------------------------
    4     SOURCE OF FUNDS*

              WC, OO (See Item 3)
- ------------------------------------------------------------------------------
    5     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
          TO ITEMS 2(d) OR 2(e)                                        / /
- ------------------------------------------------------------------------------
    6     CITIZENSHIP OR PLACE OF ORGANIZATION

              Ohio
- ------------------------------------------------------------------------------
                            7     SOLE VOTING POWER

                                  1,879,570 (See Item 5)
                          ----------------------------------------------------
                            8     SHARED VOTING POWER

   NUMBER OF SHARES               0 (See Item 5)
     BENEFICIALLY         ----------------------------------------------------
    OWNED BY EACH           9     SOLE DISPOSITIVE POWER
   REPORTING PERSON
         WITH                     1,879,570 (See Item 5)
                          ----------------------------------------------------
                           10     SHARED DISPOSITIVE POWER

                                  0 (See Item 5)
- ------------------------------------------------------------------------------
   11     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

              1,879,570 (See Item 5)
- ------------------------------------------------------------------------------
   12     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
          SHARES*                                     /X/ (See Item 5)
- ------------------------------------------------------------------------------
   13     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

               16.6% (See Item 5)
- ------------------------------------------------------------------------------
   14     TYPE OF REPORTING PERSON*

              CO
- ------------------------------------------------------------------------------
                    *SEE INSTRUCTIONS BEFORE FILLING OUT!


<PAGE>   3



                                  SCHEDULE 13D


ITEM 1.           SECURITY AND ISSUER

         This Statement on Schedule 13D (this "Statement") relates to the common
stock, par value $0.01 per share ("Liberty Common"), of Liberty Bancorp, Inc., a
bank holding company incorporated under the laws of the State of Oklahoma (the
"Company"). The principal executive offices of the Company are located at 100
North Broadway, Oklahoma City, Oklahoma 73102.


ITEM 2.           IDENTITY AND BACKGROUND

         (a) - (c), (f) This Statement is being filed by BANC ONE CORPORATION,
an Ohio corporation ("BANC ONE"). BANC ONE is a multi-bank holding company that
at September 30, 1996 operates 1,503 banking offices. BANC ONE also owns several
additional corporations that engage in credit card and merchant processing,
consumer finance, mortgage banking, insurance, trust and investment management,
brokerage, investment and merchant banking, venture capital, equipment leasing
and data processing. BANC ONE's principal business and principal executive
offices are located at 100 East Broad Street, Columbus, Ohio 43271.

         The names of the directors and executive officers of BANC ONE and their
respective business addresses or residences, citizenship and present principal
occupations or employment, as well as the names, principal businesses and
addresses of any corporations or other organizations in which such employment is
conducted, are set forth on Schedule I hereto, which Schedule I is incorporated
herein by reference.

         Other than the directors and executive officers, there are no persons
or corporations controlling or ultimately in control of BANC ONE.

         (d), (e) During the last five years, neither BANC ONE nor, to its
knowledge, any of the persons listed in Schedule I hereto has (i) been convicted
in a criminal proceeding (excluding traffic violations or similar misdemeanors)
or (ii) been a party to any civil proceeding of a judicial or administrative
body of competent jurisdiction as a result of which proceeding such person was
or is subject to a judgment, decree or final order enjoining future violations
of, or prohibiting or mandating activities subject to, federal or state
securities laws or finding any violation with respect to such laws.


ITEM 3.           SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION

         As more fully described in Item 4 hereof, the Company has granted to
BANC ONE an option pursuant to which BANC ONE has the right, upon the occurrence
of certain events (none of which has yet occurred) to purchase up to 1,879,570
shares of Liberty Common at a per share price equal to $50.25. If such option
were exercisable and BANC ONE were to exercise such option in full on the date
hereof, the funds required to purchase the shares of Liberty Common issuable
upon

                                       -3-

<PAGE>   4



such exercise would be $94,448,392.50. It is currently anticipated that such
funds would be provided from BANC ONE's working capital or by borrowings from
other sources yet to be determined.


ITEM 4.           PURPOSE OF TRANSACTION

         (a) - (j) THE MERGER AGREEMENT. The Company, BANC ONE and Banc One
Oklahoma Corporation, a wholly owned subsidiary of BANC ONE ("Banc One
Oklahoma"), have entered into a Merger Agreement dated as of December 28, 1996
(the "Merger Agreement") pursuant to which the Company will, subject to the
conditions and upon the terms stated therein, merge with and into Banc One
Oklahoma (the "Merger"). Banc One Oklahoma will be the surviving corporation in
the Merger. The Merger Agreement provides that the certificate of incorporation
and by-laws of Banc One Oklahoma in effect as of the effective time of the
Merger (the "Effective Time") shall be the certificate of incorporation and
by-laws of the surviving corporation.

         In the Merger, each of the issued and outstanding shares of Liberty
Common will be converted into 1.175 shares of BANC ONE common stock (subject to
adjustments in certain circumstances). Any shares of Liberty Common held as
treasury stock immediately prior to the Effective Time will be canceled and will
not be exchanged for shares of BANC ONE common stock. Following the Merger, the
shares of Liberty Common previously issued by the Company will (i) cease to be
authorized to be quoted in the Nasdaq National Market and (ii) become eligible
for termination of registration pursuant to Section 12(g)(4) of the Securities
Exchange Act of 1934, as amended (the "Exchange Act").

         The Merger Agreement provides that, beginning with the fourth quarter
of 1996 and for each succeeding calendar quarter thereafter prior to the
calendar quarter in which the Effective Time shall occur, the Company will not
(i) deliver or pay any dividends or make any distributions on shares of Liberty
Common, except cash dividends of (A) $0.25 per share for the fourth quarter of
1996 and (B) not more than $0.30 per share for each quarter subsequent to the
fourth quarter of 1996 and (ii) unless otherwise permitted by the Merger
Agreement, deliver or pay any dividends or make any distributions in any amount
on Liberty Common in the quarter in which the Effective Time shall occur and in
which the shareholders of Liberty Common are entitled to receive regular
quarterly dividends on the shares of BANC ONE common stock into which the shares
of Liberty Common have been converted.

         The Merger is subject to, among other things, the approval of the
Merger by the respective shareholders of the Company and, if necessary, of Banc
One Oklahoma and the receipt of all necessary regulatory approvals.

         THE OPTION AGREEMENT. Concurrently with and as a condition to BANC
ONE's execution and delivery of the Merger Agreement, the Company and BANC ONE
entered into an Option Agreement dated as of December 28, 1996 (the "Option
Agreement") pursuant to which BANC ONE was granted an irrevocable option (the
"Option") to purchase up to 1,879,570 shares of Liberty Common at a price equal
to the closing trade price of a share of Liberty Common on December 30, 1996 as
reported on the

                                       -4-

<PAGE>   5



National Association of Securities Dealers Automated Quotation System National
Market System ($50.25 per share). The type and number of shares of Liberty
Common issuable pursuant to the Option, and the exercise price per share, are
subject to adjustment in certain circumstances.

         The Option expires (such event being referred to as the "Option
Termination Event") if not exercised as permitted under the Option Agreement
prior to the earlier of (i) the Effective Time, (ii) BANC ONE or the Company
receiving written notice from the Board of Governors of the Federal Reserve
System (the "Board") or its staff to the effect that the exercise of the Option
pursuant to the terms of the Option Agreement is not consistent with Section 3
of the Bank Holding Company Act of 1956, as amended, (iii) termination of the
Merger Agreement by BANC ONE in accordance with its provisions if such
termination occurs prior to the occurrence of an Initial Triggering Event (as
defined below), (iv) the first business day after the 548th calendar day
following termination of the Merger Agreement by BANC ONE in accordance with its
provisions, if such termination follows the occurrence of an Initial Triggering
Event, provided that the Option shall in all events expire not later than 24
months after such Initial Triggering Event, (v) termination of the Merger
Agreement by the Company in accordance with the terms thereof or (vi)
termination of the Merger Agreement by the mutual consent of the parties. If, in
the case of (iv), the Option is otherwise exercisable but cannot be exercised on
such day solely because of any injunction, order or similar restraint issued by
a court of competent jurisdiction, the Option shall expire on the 20th business
day after such injunction, order or restraint shall have been dissolved or when
such injunction, order or restraint shall have become permanent and no longer
subject to appeal, as the case may be.

         Provided that (i) no preliminary or permanent injunction or other order
issued by any federal or state court of competent jurisdiction in the United
States prohibiting the exercise of the Option or the delivery of the shares of
Liberty Common subject to the Option shall be in effect, (ii) any such exercise
shall otherwise be subject to compliance with applicable law and (iii) BANC ONE
is not then in material breach of the Merger Agreement, BANC ONE may exercise
the Option in whole or in part at any time or from time to time after the
occurrence of both an Initial Triggering Event and a Purchase Event (as defined
below) if, but only if, both the Initial Triggering Event and the Purchase Event
shall have occurred prior to the occurrence of an Option Termination Event. If
BANC ONE wishes to exercise the Option, written notice of such exercise shall be
given to the Company within 30 days following such Purchase Event specifying the
number of shares of Liberty Common BANC ONE will purchase pursuant to such
exercise and a place and date for the closing of the purchase which date shall
be within 45 days following the receipt of the last of any required regulatory
approvals, but in any event within 365 days of the Purchase Event, subject to
reasonable extensions in order for BANC ONE to obtain required regulatory
approvals.

         For purposes of the Option Agreement, an "Initial Triggering Event"
shall have occurred at such time as one of the following events shall have
occurred and BANC ONE shall have determined in good faith (and shall have
notified the Company in writing of such determination) that there is a
reasonable likelihood that, as a result of the occurrence of any of the
following events, consummation of the

                                       -5-

<PAGE>   6



Merger pursuant to the terms of the Merger Agreement is jeopardized: (i) any
person (other than BANC ONE or any BANC ONE subsidiary or affiliate) shall have
commenced a bona fide offer to purchase shares of Liberty Common such that upon
consummation of the offer such person would own or control 10% or more of the
outstanding shares of Liberty Common or shall have entered into an agreement
with the Company, or shall have filed an application or notice with the Board or
any other federal or state regulatory agency for clearance or approval to (A)
merge or consolidate or enter into any similar transaction with the Company, (B)
purchase, lease or otherwise acquire all or substantially all of the assets of
the Company or (C) purchase or otherwise acquire securities representing 10% or
more of the voting power of the Company; (ii) any person (other than BANC ONE,
Banc One Oklahoma, any BANC ONE subsidiary or affiliate, any subsidiary of the
Company in a fiduciary capacity) or any current shareholder of the Company which
has beneficial ownership of 10% or more of the outstanding shares of Liberty
Common (a "Current 10% Shareholder") shall have acquired beneficial ownership or
the right to acquire beneficial ownership of 10% or more of the outstanding
shares of Liberty Common or, in the case of a Current 10% Shareholder, said
Current 10% Shareholder shall have acquired beneficial ownership or the right to
acquire beneficial ownership of 10% or more of the outstanding shares of Liberty
Common in addition to those beneficially owned as of December 28, 1996; (iii)
any person (other than BANC ONE or any BANC ONE subsidiary or affiliate) shall
have made a bona fide proposal to the Company after the date of the Merger
Agreement by public announcement or written communication that is the subject of
public disclosure or regulatory report or filing to (A) acquire the Company by
merger, consolidation, purchase of all or substantially all of its assets or any
other similar transaction, or (B) make an offer described in clause (i) above;
(iv) any person shall have solicited proxies in a proxy solicitation subject to
Regulation 14A under the Exchange Act in opposition to approval of the Merger
Agreement by the Company's shareholders; or (v) the Company shall have willfully
breached any provision of the Merger Agreement which breach would entitle BANC
ONE to terminate the Merger Agreement and such breach is not cured pursuant to
the terms of the Merger Agreement.

         For purposes of the Option Agreement, a "Purchase Event" shall have
occurred at such time as (i) any person (other than BANC ONE or any BANC ONE
subsidiary or affiliate) acquires beneficial ownership of 50% or more of the
then-outstanding shares of Liberty Common or (ii) the Company enters into an
agreement with another person (other than BANC ONE or any BANC ONE subsidiary)
pursuant to which such person is entitled to acquire 50% or more of the
then-outstanding shares of Liberty Common.

         Copies of the Merger Agreement and the Option Agreement are attached as
exhibits to this Statement and are incorporated herein by reference. The
foregoing summary of such documents is not intended to be complete and is
qualified in its entirety by reference to the actual documents being filed
herewith.

         Except as set forth herein, BANC ONE has no current plans or proposals
with respect to the Company that relate to or would result in any of the actions
specified in clauses (a) through (j) of Item 4 of Schedule 13D.


                                       -6-

<PAGE>   7



ITEM 5.           INTEREST IN SECURITIES OF THE ISSUER

         (a), (b) BANC ONE may be deemed to be the beneficial owner of the
1,879,570 shares of Liberty Common issuable upon exercise of the Option. As
provided in the Option Agreement, BANC ONE may exercise the Option only upon the
happening of one or more events, none of which has occurred. See Item 4 hereof.
Since the Option is not currently exercisable, BANC ONE expressly disclaims
beneficial ownership of any of such shares of Liberty Common. If the Option were
currently exercisable and exercised in full, the shares of Liberty Common
issuable upon exercise of the Option would represent approximately 16.6% of the
total number of outstanding shares of Liberty Common (after giving effect to the
issuance of such shares).1 BANC ONE has no right to vote or dispose of the
shares of Liberty Common issuable upon exercise of the Option unless and until
such time as the Option is exercised. If BANC ONE were to exercise the Option,
it would have sole power to vote and to dispose of the shares of Liberty Common
issued as a result of such exercise.

         As of January 3, 1997, subsidiaries of BANC ONE, in the ordinary course
of their trust and investment management business, held 62 shares of Liberty
Common in trust accounts, managed accounts or under similar arrangements on
behalf of third parties (collectively, "Trust Accounts"), constituting less than
0.1% of the shares of Liberty Common that would be issued and outstanding if the
Option had been exercised in full as of January 3, 1997. BANC ONE has sole
voting power with respect to 62 shares of Liberty Common held in Trust Accounts,
sole dispositive power with respect to one share of Liberty Common held in Trust
Accounts and shared dispositive power with respect to 61 shares of Liberty
Common held in Trust Accounts. Such shares are not included in the shares of
Liberty Common covered by this Statement. BANC ONE disclaims beneficial
ownership of such shares.

         Except as set forth above, neither BANC ONE nor, to its knowledge, any
of the persons listed on Schedule I hereto beneficially owns any shares of
Liberty Common.

         (c) Except for the issuance of the Option, neither BANC ONE nor, to its
knowledge, any of the persons listed on Schedule I hereto has effected any
transaction in shares of Liberty Common for such person's own account during the
past 60 days. In the ordinary course of their trust and investment management
business, subsidiaries of BANC ONE may have effected transactions in shares of
Liberty Common during the past 60 days on behalf of Trust Accounts.

         (d) No other person has the right to receive or the power to direct the
receipt of dividends from, or the proceeds from the sale of, the shares of
Liberty Common issuable upon exercise of the Option. The beneficiaries of Trust
Accounts have the right to receive or the power to direct the receipt of

- ------------------
         1        Based upon the 9,448,538 shares of Liberty Common represented
                  by Liberty in the Merger Agreement to be issued and
                  outstanding as of December 28, 1996.


                                       -7-

<PAGE>   8



dividends from, or the proceeds from the sale of, shares of Liberty Common held
in such Trust Accounts.

         (e)      Not applicable.


ITEM 6.           CONTRACTS, ARRANGEMENTS, UNDERSTANDINGS OR RELATIONSHIPS WITH
                  RESPECT TO SECURITIES OF THE ISSUER

         Except as set forth in response to Items 3, 4 and 5 hereof, neither
BANC ONE nor, to its knowledge, any of the persons listed on Schedule I hereto
has any contracts, arrangements, understandings or relationships (legal or
otherwise) with any person with respect to any securities of the Company,
including, but not limited to, transfer or voting any of the securities,
finder's fees, joint ventures, loan or option arrangements, put or calls,
guarantees of profits, division of profits or loss, or the giving or withholding
of proxies.


ITEM 7.           MATERIALS TO BE FILED AS EXHIBITS

1.       Merger Agreement dated December 28, 1996 between Liberty Bancorp, Inc.
         and Banc One Oklahoma Corporation and joined in by BANC ONE
         CORPORATION.

2.       Option Agreement dated as of December 28, 1996 between Liberty Bancorp,
         Inc. and BANC ONE CORPORATION.








                                       -8-

<PAGE>   9



                                    SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify
that the information set forth in this Statement is true, complete and correct.


                                            BANC ONE CORPORATION



Dated:    January 6, 1997                   By: /s/ Steven Alan Bennett
                                               ------------------------
                                                Steven Alan Bennett
                                                Senior Vice President and
                                                  General Counsel





                                       -9-

<PAGE>   10



                                   SCHEDULE I

                       DIRECTORS AND EXECUTIVE OFFICERS OF
                              BANC ONE CORPORATION

         The names, business addresses and present principal occupations of the
directors and executive officers of BANC ONE CORPORATION ("BANC ONE") are set
forth below. If no business address is given, the director's or executive
officer's business address is 100 East Broad Street, Columbus, Ohio 43271. The
business address of each BANC ONE director is also the business address of such
director's employer, if any. Unless otherwise indicated, all directors and
executive officers listed below are citizens of the United States.


I.       Directors
         ---------

<TABLE>
<CAPTION>
                                            Present Principal Occupation
         Name                               or Employment and Address
         ----                               -------------------------

<S>                                         <C>
Bennett Dorrance                            Chairman and Managing Director
                                            DMB Associates, Inc.
                                            4201 North 24th Street, Suite 120
                                            Phoenix, Arizona  85016

Charles E. Exley, Jr.                       Corporate director
                                            2350 Kettering Tower
                                            Dayton, Ohio  45423

E. Gordon Gee                               President
                                            The Ohio State University
                                            205 Bricker Hall
                                            190 North Oval Mall
                                            Columbus, Ohio  43210

John R. Hall                                Chairman and Chief Executive Officer
                                            Ashland Inc.
                                            (oil  refiner, manufacturer and
                                            distributor of chemicals)
                                            1000 Ashland Drive
                                            Russell, Kentucky 41169

Laban P. Jackson, Jr.                       Chairman and Chief Executive Officer
                                            Clear Creek Properties, Inc.
                                            (real estate development)
                                            651 Perimeter Drive
                                            Suite 310
                                            Lexington, Kentucky 40517

Richard J. Lehmann                          President and Chief Operating Officer
                                            BANC ONE CORPORATION
</TABLE>


                                      S - 1

<PAGE>   11



<TABLE>
<CAPTION>
<S>                                         <C>
John W. Kessler                             Chairman
                                            The New Albany Company
                                            (real estate development)
                                            5076 Whytehouse Lane
                                            New Albany, Ohio 43054

John B. McCoy                               Chairman and Chief Executive Officer
                                            BANC ONE CORPORATION

John G. McCoy                               Chairman of the Executive Committee
                                            BANC ONE CORPORATION

Richard L. Scott                            President and Chief Executive Officer
                                            Columbia/HCA Healthcare Corporation
                                            (healthcare provider)
                                            One Park Plaza
                                            Nashville, Tennessee  37203

Thekla R. Shackelford                       Education consultant
                                            6020 Havens Road
                                            Gahanna, Ohio 43230

Alex Shumate                                Office Managing Partner
                                            Squire, Sanders & Dempsey
                                            (attorneys-at-law)
                                            41 South High Street, Suite 1300
                                            Columbus, Ohio 43215

Frederick P. Stratton, Jr.                  Chairman and Chief Executive Officer
                                            Briggs & Stratton Corporation
                                            (manufacturer of small gasoline
                                            engines) 12301 West Wirth Street
                                            Wauwatosa, Wisconsin 53222

Robert D. Walter                            Chairman and Chief Executive Officer
                                            Cardinal Health, Inc.
                                            (wholesale distributor of drug and related
                                            health products)
                                            5555 Glendon Court
                                            Dublin, Ohio  43016
</TABLE>



                                      S - 2

<PAGE>   12



II.      Executive Officers
         ------------------

<TABLE>
<CAPTION>
                                            Present Principal Occupation
         Name                               or Employment and Address
         ----                               -------------------------

<S>                                         <C>
Joseph D. Barnette                          Chairman and Chief Executive Officer
                                            Banc One Indiana Corporation
                                            111 Monument Circle
                                            Indianapolis, Indiana 46277

Steven A. Bennett                           Senior Vice President and General Counsel
                                            BANC ONE CORPORATION

William P. Boardman                         Senior Executive Vice President
                                            BANC ONE CORPORATION

Frederick L. Cullen                         President
                                            Banc One Ohio Corporation

Bobby L. Doxey                              Senior Vice President and Controller
                                            BANC ONE CORPORATION

Roman J. Gerber                             Executive Vice President
                                            BANC ONE CORPORATION

G. Lee Griffin                              Chairman and Chief Executive Officer
                                            Banc One Louisiana Corporation
                                            451 Florida Street
                                            Baton Rouge, Louisiana  70801

Richard D. Headley                          Chairman and Chief Executive Officer
                                            Banc One Services Corporation
                                            770 Brooksedge Plaza Drive
                                            Columbus, Ohio 43271-1133

Thomas E. Hoaglin                           Chairman
                                            Banc One Ohio Corporation

David J. Kundert                            Chairman
                                            Banc One Investment Management
                                               and Trust Group
                                            774 Park Meadow Road
                                            Westerville, Ohio 43271-0211

Richard J. Lehmann                          President and Chief Operating Officer
                                            BANC ONE CORPORATION

William C. Leiter                           Senior Vice President
                                            BANC ONE CORPORATION
</TABLE>



                                      S - 3

<PAGE>   13


<TABLE>
<CAPTION>
<S>                                         <C>
Richard D. Lodge                            Senior Vice President
                                            BANC ONE CORPORATION

John B. McCoy                               Chairman and Chief Executive Officer
                                            BANC ONE CORPORATION

Michael J. McMennamin                       Executive Vice President
                                            BANC ONE CORPORATION

Jeffrey P. Neubert                          Executive Vice President
                                            BANC ONE CORPORATION

Ronald G. Steinhart                         Chairman and Chief Executive Officer
                                            Banc One National Commercial Banking Group
                                            1717 Main Street
                                            Dallas, Texas 75201

Kenneth T. Stevens                          Chairman and Chief Executive Officer
                                            Banc One Retail Group

Donald A. Winkler                           Chairman and Chief Executive Officer
                                            Finance One Corporation
</TABLE>


                                      S - 4




<PAGE>   1
                                   EXHIBIT 1

<PAGE>   2

                                MERGER AGREEMENT
                                ----------------

MERGER AGREEMENT dated as of December 28, 1996 (hereinafter called the "Merger
Agreement"), between Liberty Bancorp, Inc. (hereinafter called "LIBERTY") and
Banc One Oklahoma Corporation (hereinafter called "BANC ONE OKLAHOMA") and
joined in by BANC ONE CORPORATION (hereinafter called "BANC ONE").

                                   WITNESSETH:

LIBERTY is a corporation duly organized under the laws of the State of Oklahoma.
Its principal office is located at 100 North Broadway, Oklahoma City, Oklahoma
County, Oklahoma. As of September 30, 1996, LIBERTY had authorized capital stock
consisting of 50,000,000 shares of common stock having a par value of $0.01 per
share ("LIBERTY Common"), of which a total of 9,448,538 shares were issued and
outstanding and 39,890 of which were shares of treasury stock owned by LIBERTY.
Except as set forth in EXHIBIT A hereto, LIBERTY, or a subsidiary of LIBERTY,
owns, beneficially and of record, all of the issued and outstanding capital
stock of the banks (the "Banks") and of the corporations and/or limited
liability companies (together, the "Companies") listed in EXHIBIT A hereto. The
Banks and the Companies are hereinafter sometimes referred to collectively as
"Subsidiaries" and each, sometimes, as a "Subsidiary."

BANC ONE OKLAHOMA is a corporation duly organized under the laws of the State of
Oklahoma. Its principal office is located at 615 Claussen, P.O. Box 656,
Oklahoma County, Oklahoma. As of the date of this Agreement, BANC ONE OKLAHOMA
had capital stock of $500 divided into 500 shares of common stock having a par
value of one dollar ($1.00) per share ("BANC ONE OKLAHOMA Common"), all of which
are issued and outstanding. BANC ONE OKLAHOMA is a wholly owned subsidiary of
BANC ONE.

BANC ONE is a corporation duly organized under the laws of the State of Ohio.
Its principal office is located at 100 East Broad Street, Columbus, Franklin
County, Ohio. As of September 30, 1996 BANC ONE had capital stock of
$2,399,105,000, divided into 600,000,000 shares of common stock, without par
value ("BANC ONE Common"), 431,805,662 of which shares of BANC ONE Common were
issued and outstanding and 5,622,100 of which were shares of treasury stock
owned by BANC ONE and acquired at a cost of $(205,898,000), and 35,000,000
shares of preferred stock without par value, of which 4,801,546 shares were
issued and outstanding as Series C $3.50 Cumulative

                                       -1-

 


<PAGE>   3



Convertible Preferred Stock ("BANC ONE Preferred C") and none of which were
shares of treasury stock owned by BANC ONE.

The respective Boards of Directors of LIBERTY, BANC ONE OKLAHOMA and BANC ONE
have each approved this Merger Agreement and the consummation of the
transactions contemplated hereby and have approved the execution and delivery of
this Merger Agreement. This Merger Agreement provides for the merger of LIBERTY
with and into BANC ONE OKLAHOMA upon the terms and conditions of this Merger
Agreement (the "Merger"). BANC ONE OKLAHOMA will be the surviving corporation of
the Merger. From and after the time the Merger shall become effective as set
forth in Section 4 of this Merger Agreement, and as and when required by this
Merger Agreement, BANC ONE will issue shares of BANC ONE Common and in exchange
for all of the issued and outstanding shares of LIBERTY Common. It is understood
by each of the parties hereto that BANC ONE seeks, as a result of the Merger, to
acquire LIBERTY, the Banks and the Companies and all of their respective
operating assets and liabilities.

Subject to the terms and conditions of this Merger Agreement, all parties will
exert their reasonable best efforts to obtain such regulatory approvals and to
effect such other actions as are necessary or appropriate to consummate the
Merger. In no event will BANC ONE issue more than 12,161,807 Shares of BANC ONE
Common in connection with the transactions contemplated by this Merger
Agreement, except as may be required upon application of Section 7(e) or 26(e)
of this Merger Agreement.

In consideration of the premises, LIBERTY, BANC ONE and BANC ONE OKLAHOMA hereby
make this Merger Agreement and prescribe the terms and conditions of the Merger
and the mode of carrying the Merger into effect as follows:

     1.   MERGER. Subject to the terms and conditions hereinafter set forth in
          this Merger Agreement, LIBERTY shall be merged with and into BANC ONE
          OKLAHOMA pursuant to and in accordance with applicable provisions of
          the Oklahoma General Corporation Act ("Oklahoma GCA").

     2.   NAME. The name of the surviving corporation (hereinafter called the
          "Surviving Corporation" whenever reference is made to it as of the
          Effective Time or thereafter) shall be "Banc One Oklahoma
          Corporation."

                                       -2-

 


<PAGE>   4



     3.   BUSINESS. The business of BANC ONE OKLAHOMA as the Surviving
          Corporation shall be that of a bank holding company. The Surviving
          Corporation shall exist by virtue of, and be governed by, the laws of
          the State of Oklahoma and shall have its principal office at 100 North
          Broadway, Oklahoma City, Oklahoma.

     4.   EFFECTIVE TIME OF MERGER; CERTIFICATE OF INCORPORATION. The Merger
          shall become effective in accordance with applicable provisions of
          Section 1081 of the Oklahoma GCA upon the later of (i) the time a
          certificate of merger, certified copy of the Merger Agreement or other
          document or documents effecting the Merger under the Oklahoma GCA are
          filed with the Secretary of State of the State of Oklahoma (the
          "Oklahoma State Filing") and (ii) that time, if any, subsequent to the
          time of the Oklahoma State Filing, designated in the Oklahoma State
          Filing as the time the merger shall become effective (the "Effective
          Time").

          The Certificate of Incorporation of BANC ONE OKLAHOMA in effect as of
          the Effective Time shall be the Certificate of Incorporation of the
          Surviving Corporation and the By-laws of BANC ONE OKLAHOMA in effect
          as of the Effective Time shall be the By-laws of the Surviving
          Corporation.

     5.   EFFECT OF MERGER. At the Effective Time, the separate corporate
          existence of LIBERTY and BANC ONE OKLAHOMA, respectively, shall, as
          provided in applicable provisions of the Oklahoma GCA be merged into
          and continued in BANC ONE OKLAHOMA as the Surviving Corporation, which
          shall be deemed to be the same corporation as LIBERTY and BANC ONE
          OKLAHOMA. All rights, franchises and interests of LIBERTY and BANC ONE
          OKLAHOMA, respectively, in and to every type of property, real,
          personal and mixed, and chooses in action, shall be transferred to and
          vested in BANC ONE OKLAHOMA as the Surviving Corporation by virtue of
          the Merger without any deed or other transfer in the same manner and
          to the same extent as such rights, franchises and interests were held
          or enjoyed by LIBERTY and BANC ONE OKLAHOMA, respectively, at the
          Effective Time, as provided in applicable provisions of the Oklahoma
          GCA.

     6.   LIABILITIES UPON MERGER. The Surviving Corporation shall be
          responsible for all of the liabilities of every kind and description
          of LIBERTY and BANC ONE OKLAHOMA existing as of the Effective Time,
          except as may be specifically provided otherwise in this Merger
          Agreement.

                                       -3-

 


<PAGE>   5




     7.   CONVERSION OF SHARES.

     (a)  At the Effective Time:

          (i)  Each of the not more than 10,350,474 shares of LIBERTY Common
               that shall be issued and outstanding immediately prior to the
               Effective Time, except for shares of LIBERTY Common subject to
               the rights of a dissenting shareholder, shall thereupon and
               without further action be converted into 1.175 shares of BANC ONE
               Common, subject, however, to (i) the anti-dilution provisions of
               Sections 7(e) of this Merger Agreement and (ii) provisions set
               forth in Section 7(c) herein relative to fractional shares (the
               "Exchange Rate").

          (ii) The 500 shares of BANC ONE OKLAHOMA Common issued and outstanding
               immediately prior to the Effective Time shall continue to be
               issued and outstanding shares of common stock without par value
               of the Surviving Corporation.

         (iii) Any shares of LIBERTY Common held by LIBERTY as treasury stock
               immediately prior to the Effective Time shall be canceled and
               shall not represent capital stock of the Surviving Corporation
               and shall not be exchanged for shares of BANC ONE Common.

     (b)  LIBERTY's shareholders of record at the Effective Time, for the shares
          of LIBERTY Common then held by them, respectively, shall be allocated
          and be entitled to receive (upon surrender of certificates formerly
          representing shares of LIBERTY Common for cancellation) certificates
          for shares of BANC ONE Common as shall be equal to (x) the number of
          shares of LIBERTY Common outstanding immediately prior to the
          Effective Time multiplied by (y) the Exchange Rate.

     (c)  No certificate for fractional shares of BANC ONE Common will be issued
          by BANC ONE in connection with the exchange contemplated by the
          Merger, but in lieu thereof, any holder of LIBERTY Common shall, upon
          surrender of the certificate or certificates representing such LIBERTY
          Common, be paid cash, without interest, by BANC ONE for such
          fractional shares on the basis of the average of the closing prices of
          BANC ONE

                                       -4-

 


<PAGE>   6



          Common on the New York Stock Exchange ("NYSE") during the Valuation
          Period (as hereinafter defined) as reported in THE WALL STREET JOURNAL
          for NYSE Composite Transactions for each of the days included in the
          Valuation Period.

          The term "Valuation Period" shall mean the ten consecutive NYSE
          trading days ending on the sixth NYSE trading day immediately prior to
          the proposed Effective Time, as designated by BANC ONE pursuant to
          Section 10(c) of this Merger Agreement.

     (d)  As soon as practicable after the Effective Time, holders of
          certificates formerly representing shares of LIBERTY shall be
          instructed to tender such certificates to BANC ONE pursuant to a
          letter of transmittal which shall be delivered to such shareholders by
          BANC ONE and, subject to the provisions set forth above relating to
          fractional shares, BANC ONE, or Harris Trust & Savings Bank, as
          Exchange Agent for BANC ONE, will distribute to such holders of
          certificates formerly representing shares of LIBERTY Common in
          exchange for and upon surrender for cancellation by such holders of a
          certificate or certificates formerly representing shares of LIBERTY
          Common the certificate(s) for shares of BANC ONE Common in accordance
          with the Exchange Rate. Each certificate formerly representing LIBERTY
          Common (other than certificates representing shares of LIBERTY Common
          subject to the rights of dissenting shareholders) shall be deemed for
          all purposes to evidence the ownership of the number of shares of BANC
          ONE Common and cash for fractional shares into which such shares have
          been converted, except, however, and notwithstanding the foregoing,
          that, until such surrender of the certificate or certificates formerly
          representing shares of LIBERTY Common, the holder thereof shall not be
          entitled to receive any dividend or other payment or distribution
          payable to holders of BANC ONE Common. Upon such surrender (or, in
          lieu of surrender, other provisions reasonably satisfactory to BANC
          ONE as are made as set forth in the next following paragraph), there
          shall be paid to the person entitled thereto the aggregate amount of
          dividends or other payments or distributions (in each case without
          interest) which became payable after the Effective Time on the whole
          shares of BANC ONE Common represented by the certificates issued upon
          such surrender and exchange or in accordance with such other
          provisions, as the case may be. After the Effective Time, the holders
          of certificates formerly representing shares of LIBERTY Common shall
          cease to have rights with respect to such shares (except such rights,
          if any, as they may have as dissenting shareholders), and except as
          aforesaid, their sole rights shall be to exchange

                                       -5-

 


<PAGE>   7



               said certificates for shares of BANC ONE Common and cash for
               fractional shares in accordance with this Merger Agreement.

               Certificates formerly representing shares of LIBERTY Common
               surrendered for cancellation by each shareholder entitled to
               exchange shares of LIBERTY Common for shares of BANC ONE Common
               by reason of the Merger shall be appropriately endorsed or
               accompanied by such appropriate instruments of transfer as BANC
               ONE may reasonably require; provided, however, that if there be
               delivered to BANC ONE by any person who is unable to produce any
               such certificate formerly representing shares of LIBERTY Common
               for transfer (i) evidence to the reasonable satisfaction of BANC
               ONE that any such certificate has been lost, wrongfully taken or
               destroyed, and (ii) such security or indemnity as reasonably may
               be requested by BANC ONE to save it and Harris Bank & Trust
               harmless, and (iii) evidence to the reasonable satisfaction of
               BANC ONE that such person is the owner of the shares theretofore
               represented by each certificate claimed by him to be lost,
               wrongfully taken or destroyed and that he is the person who would
               be entitled to present each such certificate and to receive
               shares of BANC ONE Common pursuant to this Merger Agreement, then
               BANC ONE, in the absence of actual notice to it that any shares
               theretofore represented by any such certificate have been
               acquired by a bona fide purchaser, shall deliver to such person
               the certificate(s) representing shares of BANC ONE Common which
               such person would have been entitled to receive upon surrender of
               each such lost, wrongfully taken or destroyed certificate
               formerly representing shares of LIBERTY Common.

          (e)  If prior to the Effective Time BANC ONE or LIBERTY shall declare
               a stock dividend or make distributions upon or subdivide, split
               up, reclassify or combine its shares of common stock or declare a
               dividend or make a distribution on its common stock in any
               security convertible into or exchangeable for its common stock,
               appropriate adjustment or adjustments will be made in the
               Exchange Rate.

     8.   BOARD OF DIRECTORS AND EMPLOYEES; NAME CHANGES. The directors of
          LIBERTY immediately prior to the Effective Time shall serve as the
          directors of the Surviving Corporation immediately following the
          Effective Time and until the next annual meeting of shareholders at
          which their respective successors are elected and qualified. The
          officers and employees of the Surviving Corporation immediately
          following the Effective Time shall be the officers and employees of
          LIBERTY immediately before the Effective Time with each such person to
          hold

                                       -6-

 


<PAGE>   8



          the same office in the Surviving Corporation as held by such person in
          LIBERTY. The directors, officers and employees of the Subsidiaries
          immediately following the Effective Time shall be the directors,
          officers and employees of the respective Subsidiaries immediately
          before the Effective Time.

          LIBERTY will cooperate with BANC ONE in the procurement of requisite
          corporate and regulatory approvals and will use its reasonable best
          efforts to take such other steps as are appropriate and necessary to
          effect, when and if requested by BANC ONE, changes in the name of each
          of the Subsidiaries to include the words "BANC ONE BANK" or "BANC ONE"
          so that such name changes will become effective at the Effective Time
          or such later dates as may be designated by BANC ONE.

     9.   STOCK OPTIONS AND EMPLOYEE BENEFITS.

          (a)  As of the date of the Merger Agreement, there are outstanding and
               unexercised stock options for shares of LIBERTY Common held by
               directors, officers and employees of LIBERTY and its Subsidiaries
               and by Frank X. Henke and/or his assigns ("Henke"). Immediately
               following the Effective Time, all unexercised stock options for
               shares of LIBERTY Common issued to and held by directors,
               officers and employees of LIBERTY and its Subsidiaries and by
               Henke immediately prior to the Effective Time shall be assumed by
               BANC ONE and converted into options to purchase that number of
               shares of BANC ONE Common equal to the number of shares of
               LIBERTY Common subject to such unexercised options immediately
               prior to the Effective Time multiplied by the Exchange Rate. The
               per share exercise price of such options for shares of BANC ONE
               Common shall be the exercise price applicable to the options for
               shares of LIBERTY Common converted into options for BANC ONE
               shares divided by the Exchange Rate. Except as set forth herein,
               all terms and conditions of the stock option agreements for
               options for LIBERTY Common shall continue in full force and
               effect.

          (b)  All other employee benefit programs to be available and
               applicable to the employees of LIBERTY and the Subsidiaries
               following the Effective Time shall be as described in and
               governed by a Letter Agreement dated December 27, 1996,
               pertaining to benefits between LIBERTY and BANC ONE (the
               "Benefits Agreement").

                                       -7-

 


<PAGE>   9



     10.  UNDERTAKINGS OF THE PARTIES. LIBERTY, BANC ONE OKLAHOMA and BANC ONE
          further agree as follows:

          (a)  This Merger Agreement shall be submitted to the shareholders of
               LIBERTY for approval at a meeting to be called and held in
               accordance with applicable law and the Certificate of
               Incorporation and By-laws of LIBERTY. Such shareholders' meeting
               will be scheduled to be held approximately 30 days following the
               mailing by LIBERTY of its proxy statement to its shareholders,
               which mailing will promptly follow the effective date of the
               registration statement to be filed by BANC ONE with the
               Securities and Exchange Commission (the "SEC") as provided in
               Section 10(d). LIBERTY and BANC ONE will cooperate with each
               other in order to facilitate the preparation, filing and
               clearance of the registration statement and the proxy statement
               under federal and state securities laws to be used with respect
               to such shareholders' meeting and the exchange of shares as
               contemplated by this Merger Agreement.

          (b)  BANC ONE will promptly prepare and file an application (believed
               in good faith by BANC ONE to be substantially complete in form
               and substance) with the Board of Governors of the Federal Reserve
               System (the "Board") under appropriate provisions of Section 3 of
               the Bank Holding Company Act of 1956, as amended, and, if
               necessary, to the Oklahoma State Banking Board (the "Oklahoma
               Board") for prior approval of the Merger and/or the proposed
               acquisition of LIBERTY and/or one or more of the Subsidiaries by
               BANC ONE. LIBERTY will furnish BANC ONE such information,
               appropriate representations and documents as may be reasonably
               requested by BANC ONE in connection therewith and will cooperate
               with BANC ONE in the procurement of requisite corporate and
               regulatory approvals to effect the Merger. BANC ONE will provide
               LIBERTY and its counsel with reasonable opportunity to comment on
               the applications which it proposes to file in connection with
               such regulatory approvals and will give due consideration to any
               comments of LIBERTY and its counsel before making such filings.
               BANC ONE will use its reasonable best efforts to cause such
               applications to be approved by the Board and, if required, the
               Oklahoma Board and to obtain such other regulatory consents and
               approvals as may be necessary to facilitate the Merger, in each
               case as soon as possible, and will promptly provide LIBERTY with
               copies of all such applications together with correspondence to
               or from the Board and the Oklahoma Board related thereto.


                                       -8-

 


<PAGE>   10



          (c)  The Effective Time shall occur, subject to Section 26 of this
               Merger Agreement, at such time as shall be designated by BANC ONE
               which shall be a date not later than the latter of the first or
               last Business Day of a month next following the latter of (A)
               receipt of all approvals of the Board and the Oklahoma Board and
               the expiration of any required waiting periods with respect
               thereto and (B) approval of the Merger by the shareholders of
               LIBERTY; provided, however, the Effective Time may be such other
               day as shall be agreed to by BANC ONE and LIBERTY.

          (d)  BANC ONE will promptly prepare and file with the SEC and use its
               reasonable best efforts to cause to become effective as soon as
               possible, a registration statement, including the related
               prospectus and proxy statement referred to in Section 10(a) above
               (the "Proxy Statement"), and any required amendments thereto or
               supplements to any prospectus contained therein, relating to the
               exchange of BANC ONE Common contemplated by this Merger
               Agreement. BANC ONE will provide LIBERTY and its counsel a
               reasonable opportunity to comment on such proposed filings and
               will give due consideration to any comments of LIBERTY and its
               counsel before making any such filings. Such registration
               statement will not cover resales by any persons who may be
               considered "underwriters" under Rule 145(c) of the Securities Act
               of 1933, as amended (the "1933 Act"). BANC ONE shall use its
               reasonable best efforts to have the shares of BANC ONE Common
               qualified or exempted from qualification under all applicable
               state securities laws as soon as possible. In the event that a
               stop order has been issued, or threatened, by the SEC, that
               suspends or would suspend the effectiveness of the registration
               statement, BANC ONE shall use its reasonable best efforts to
               promptly remove, or cause not to be issued, any such stop order.

          (e)  BANC ONE and/or BANC ONE OKLAHOMA will assume and pay all
               expenses incident to the obtaining of the requisite regulatory
               consents and approvals. Without limiting the generality of the
               foregoing, the expenses to be assumed and paid by BANC ONE shall
               include (i) all legal and other expenses and taxes incurred by
               BANC ONE incident to the consummation of the Merger contemplated
               by this Merger Agreement, (ii) all legal and other expenses
               incurred by BANC ONE incident to the preparation and filing of
               the applications to the Board, the Oklahoma Board and other
               requests for regulatory consents and approvals with the
               appropriate bank regulatory agencies as set forth in or
               contemplated by this Merger Agreement and (iii) all legal and
               other expenses, if any, incurred in connection with the
               registration and qualification of BANC ONE Common

                                       -9-

 


<PAGE>   11



               under federal and state securities laws. The expenses to be
               assumed and paid by BANC ONE and/or BANC ONE OKLAHOMA shall not
               include any legal, accounting or other expenses incurred by
               LIBERTY in the negotiation of the Merger, associated with the
               Proxy Statement, the examination or review of documents for its
               own benefit, in connection with its own corporate proceedings or
               with respect to any investment banker or advisor for services
               rendered on its behalf, all of which will be assumed and paid by
               LIBERTY. BANC ONE will pay the expenses of reproducing the Proxy
               Statement.

          (f)  All information furnished by or on behalf of LIBERTY to BANC ONE
               or any of its representatives in connection with this Merger
               Agreement (whether before or after the date of this Merger
               Agreement) will be kept confidential by BANC ONE in accordance
               with the terms of that certain agreement dated December 23, 1996
               (the "Confidentiality Agreement") between BANC ONE and LIBERTY.
               All information furnished by BANC ONE and BANC ONE OKLAHOMA to
               LIBERTY (whether before or after the date of this Merger
               Agreement) and the transactions contemplated hereby which is
               regarded by BANC ONE as confidential (and is so designated not
               later than the time of delivery or the date of this Merger
               Agreement) will be kept confidential by LIBERTY and will be used
               by LIBERTY and its directors, officers, employees and
               representatives of its advisors only in connection with this
               Merger Agreement and the transactions contemplated hereby, except
               to the extent that such information (i) is already known to
               LIBERTY when received, (ii) thereafter becomes lawfully
               obtainable from other sources, otherwise than in violation of
               this paragraph or similar duties or provisions regarding
               confidentiality, or (iii) is, in the reasonable opinion of legal
               counsel for LIBERTY, required to be disclosed in any document
               filed with the SEC, the Board, the Oklahoma Board or any other
               governmental agency or authority.

          (g)  BANC ONE will provide LIBERTY with copies of all filings made by
               BANC ONE with the SEC under the Securities Exchange Act of 1934,
               as amended (the "1934 Act"), and the 1933 Act and the respective
               rules and regulations of the SEC thereunder at the time such
               filings are made at any time prior to the Effective Time.

          (h)  BANC ONE and BANC ONE OKLAHOMA will furnish to LIBERTY all
               information concerning BANC ONE and BANC ONE OKLAHOMA reasonably
               required by LIBERTY in connection with the preparation of proxy
               solicitation materials for use in soliciting proxies in
               connection with the meeting of LIBERTY's shareholders called for

                                      -10-

 


<PAGE>   12



               the purpose of voting on the Merger and will promptly advise
               LIBERTY if BANC ONE determines that any of such information is or
               becomes false or misleading in any material respect. LIBERTY will
               furnish to BANC ONE all information concerning LIBERTY and the
               Subsidiaries reasonably required by BANC ONE in connection with
               BANC ONE's preparation of the registration statement (including
               the related prospectus) and any required amendments or
               supplements thereto, or in connection with other filings by BANC
               ONE relating to the registration of its shares and will promptly
               advise BANC ONE if LIBERTY determines that any such information
               is or becomes false or misleading in any material respect.

          (i)  No press release or other public disclosure of matters related to
               this Merger Agreement or any of the transactions contemplated
               hereby shall be made by LIBERTY or BANC ONE unless the other
               party shall have provided its prior consent to the form and
               substance thereof; provided, however, that nothing herein shall
               be deemed to prohibit any party hereto from making any disclosure
               which its counsel deems necessary or advisable in order to
               fulfill such party's disclosure obligations imposed by law.

          (j)  Prior to the Effective Time, BANC ONE will vote all the shares of
               BANC ONE OKLAHOMA to approve and adopt the proposal to merge
               LIBERTY with BANC ONE OKLAHOMA at a meeting of the shareholders
               of BANC ONE OKLAHOMA held for such purpose or by means of a
               unanimous written consent of BANC ONE OKLAHOMA shareholders
               adopted in lieu of a meeting to approve the Merger and approve
               this Merger Agreement.

          (k)  For not less than the three-year period immediately following the
               Effective Time, BANC ONE shall make available adequate current
               public information about itself as that terminology is used in
               and as required by Rule 144(c) of the SEC under the 1933 Act.

          (l)  LIBERTY will use its reasonable best efforts to cause each person
               who, in the joint opinion of counsel for BANC ONE and LIBERTY, is
               at the Effective Time or was, at the time of LIBERTY's
               shareholders' meeting referred to in Section 10 hereof, an
               "affiliate" of LIBERTY (as that term is used in Rules 144 and 145
               promulgated by the SEC under the 1933 Act), to execute and
               deliver to BANC ONE the written undertakings in the form attached
               hereto as EXHIBIT B.

                                      -11-

 


<PAGE>   13



          (m)  BANC ONE will initiate a pre-acquisition investigation and review
               of the books, credit files, records and facilities of LIBERTY and
               its Subsidiaries and will complete such pre-acquisition
               investigation as soon as reasonably possible but, in no event,
               within not more than 60 days following the date of this Merger
               Agreement. BANC ONE shall advise LIBERTY at the conclusion of
               such pre-acquisition investigation of all matters then known to
               BANC ONE which BANC ONE shall in good faith determine to be
               either (i) inconsistent in any material and adverse respect with
               any of the representations and warranties of LIBERTY contained in
               this Merger Agreement or (ii), in the reasonable judgment of the
               Board of Directors of BANC ONE, to be either (x) of such
               significance as to materially and adversely affect the financial
               condition or the results of operations of LIBERTY and the
               Subsidiaries on a consolidated basis or (y) deviate materially
               and adversely from LIBERTY's financial statements for the nine
               months ended September 30, 1996. BANC ONE shall have the right to
               terminate this Merger Agreement as set forth in Section 26(c).

          (n)  LIBERTY will initiate a pre-acquisition investigation and review
               of the books, credit files, records and facilities of BANC ONE
               and its subsidiaries and will complete such pre-acquisition
               investigation as soon as reasonably possible but, in no event,
               within not more than 10 business days following the date of this
               Merger Agreement. LIBERTY shall advise BANC ONE at the conclusion
               of such pre-acquisition investigation of all matters then known
               to LIBERTY which LIBERTY shall in good faith determine to be
               either (i) inconsistent in any material and adverse respect with
               any of the representations and warranties of BANC ONE or BANC ONE
               OKLAHOMA contained in this Merger Agreement or (ii) in the
               reasonable judgment of the Board of Directors of LIBERTY, to be
               either (x) of such significance as to materially and adversely
               affect the financial condition or the results of operations of
               BANC ONE and its subsidiaries on a consolidated basis or (y)
               deviate materially and adversely from BANC ONE's financial
               statements for the nine months ended September 30, 1996. LIBERTY
               shall have the right to terminate this Merger Agreement as set
               forth in Section 26(d).

          (o)  In addition to BANC ONE's pre-acquisition investigation of
               LIBERTY and LIBERTY's pre-acquisition investigation of BANC ONE,
               BANC ONE and LIBERTY shall each provide the other with adequate
               opportunity to conduct such further reviews and examinations of
               the business, properties and conditions (financial and otherwise)
               of the other as BANC ONE and LIBERTY, respectively, shall deem
               prudent, provided that such

                                      -12-

 


<PAGE>   14



               investigations shall not interfere unreasonably with the normal
               operations of the party being reviewed.

          (p)  BANC ONE will use its reasonable best efforts to cause the shares
               of BANC ONE Common to be issued to the shareholders of LIBERTY
               pursuant to this Merger Agreement to be listed on the NYSE as of
               the Effective Time.

          (q)  Prior to the Effective Time, BANC ONE will file with the SEC and
               use its reasonable best efforts to cause to become effective not
               later than the Effective Time, a registration statement on Form
               S-8 or other appropriate form to register with the SEC the shares
               of BANC ONE Common which may be issued to individuals upon the
               exercise of stock options and/or other stock-related benefits
               assumed by BANC ONE pursuant to this Merger Agreement and/or the
               Benefits Agreement and will use its reasonable best efforts to
               cause such registration statement to remain in effect until the
               exercise or expiration of all such options and/or other
               stock-related benefits. BANC ONE shall use its reasonable best
               efforts to have the shares of BANC ONE Common which may be issued
               upon the exercise of such options qualified or exempted from
               qualification from all applicable state securities laws.

     11.  DISSENTING SHAREHOLDERS. Shareholders of LIBERTY Common who do not
          vote their shares in favor of the Merger and otherwise perfect
          applicable dissenters' rights will be entitled to applicable
          dissenters' or appraisal rights, if any, under applicable provisions
          of the Oklahoma GCA.

     12.  TAX OPINION. BANC ONE and LIBERTY shall use their respective
          reasonable best efforts to obtain from Wachtell, Lipton, Rosen & Katz
          a written opinion addressed to LIBERTY, its shareholders and BANC ONE,
          that based upon the Internal Revenue Code of 1986, as amended (the
          "Internal Revenue Code"), the regulations thereunder and rulings
          issued by the Internal Revenue Service in transactions similar to
          those contemplated by this Merger Agreement:

          (a)  The statutory Merger of LIBERTY with and into BANC ONE OKLAHOMA
               will constitute a reorganization within the meaning of Section
               368(a)(1)(A) and Section 368(a)(2)(D) of the Internal Revenue
               Code;

                                      -13-

 


<PAGE>   15



          (b)  No gain or loss will be recognized by BANC ONE or LIBERTY as a
               consequence of the transactions herein contemplated;

          (c)  No gain or loss will be recognized by the shareholders of LIBERTY
               on the exchange of their shares of LIBERTY Common for shares of
               BANC ONE Common (disregarding for this purpose any cash
               consideration received by such shareholders of LIBERTY Common,
               including any cash received pursuant to the exercise of statutory
               dissenters' rights or for fractional share interests to which
               they may be entitled);

          (d)  The Federal income tax basis of the BANC ONE Common (including
               fractional share interests to which they may be entitled)
               received by the shareholders of LIBERTY Common for their shares
               of LIBERTY Common will be the same as the Federal income tax
               basis of the LIBERTY Common surrendered in exchange therefor; and

          (e)  The holding period of the BANC ONE Common received by a
               shareholder of LIBERTY Common will include the period for which
               the LIBERTY Common exchanged therefor was held, provided the
               exchanged LIBERTY Common was held as a capital asset by such
               shareholder on the date of the exchange.

     13.  REPRESENTATIONS AND WARRANTIES OF BANC ONE. BANC ONE represents and
          warrants to LIBERTY that, except as set forth in BANC ONE's disclosure
          letter to LIBERTY dated December 27, 1996, and any attachments or
          schedules annexed thereto, and delivered to LIBERTY not later than the
          time of LIBERTY's execution of this Merger Agreement (the "BANC ONE
          Disclosure Letter") and except as otherwise indicated below:

          (a)  BANC ONE is a corporation duly organized and validly existing in
               good standing under the laws of the State of Ohio, is a
               registered bank holding company under the Bank Holding Company
               Act of 1956, as amended, and is qualified to do business and is
               in good standing in the State of Ohio, together with all other
               jurisdictions where it is both required to so qualify and where
               the failure to so qualify would have a BANC ONE Material Adverse
               Effect, as hereinafter defined. A BANC ONE Material Adverse
               Effect is that which has or would have a material adverse effect
               on the business, operations, financial condition or results of
               operations of BANC ONE and its subsidiaries, taken as a whole, or
               on the ability of BANC ONE or BANC ONE OKLAHOMA to consummate the
               transactions contemplated hereby. BANC ONE has full power and
               authority (including

                                      -14-

 


<PAGE>   16



               all licenses, franchises, permits and other governmental
               authorizations which are legally required) to engage in the
               businesses and activities now conducted by it and its
               subsidiaries. BANC ONE is not subject to any formal or informal
               agreement or understanding with, nor is it subject to any order
               of, any bank regulatory authority restricting or prohibiting or
               attempting to restrict or prohibit any activities or conduct of
               BANC ONE. Subject only to obtaining the required regulatory
               approvals, BANC ONE is, and at all times after the date of this
               Merger Agreement to and including the Effective Time will be,
               authorized to effect the Merger under applicable law. As of
               September 30, 1996 BANC ONE had capital stock of $2,399,105,000,
               divided into 600,000,000 shares of BANC ONE Common, 431,805,662
               of which shares of BANC ONE Common were issued and outstanding
               and 5,622,100 of which were shares of treasury stock owned by
               BANC ONE and acquired at a cost of $(205,898,000), and 35,000,000
               shares of preferred stock without par value, of which 4,801,546
               shares were issued and outstanding shares of BANC ONE Preferred C
               and none of which were shares of treasury stock owned by BANC
               ONE. All of the issued and outstanding shares of BANC ONE's
               capital stock are duly authorized, validly issued, fully paid,
               nonassessable and subject to no pre-emptive rights. As of
               September 30, 1996, BANC ONE had surplus of $4,465,890,000,
               retained earnings, including capital reserves, of $1,793,048,000,
               net unrealized holding gains/(losses) available for sale (net of
               tax) of $(12,754,000), and total consolidated assets of
               $98,562,000,000.

          (b)  BANC ONE has furnished to LIBERTY copies of the following
               financial statements relating to BANC ONE and its consolidated
               subsidiaries: (i) the audited Consolidated Balance Sheets of BANC
               ONE as of December 31, 1995 and 1994 and the Consolidated
               Statements of Income, Shareholders' Equity and Cash Flows for the
               years then ended, together with the notes thereto, as audited by
               Coopers & Lybrand, independent auditors; and (ii) the unaudited
               Consolidated Balance Sheet of BANC ONE as at September 30, 1996
               and the unaudited Consolidated Statements of Income and
               Shareholders' Equity for the period then ended, together with the
               notes thereto. Each of the aforementioned financial statements
               present fairly, in accordance with generally accepted accounting
               principles (applied on a consistent basis except as disclosed in
               the footnotes thereto), the consolidated financial position and
               results of operations of BANC ONE as of the dates and for the
               periods therein set forth. Such financial statements do not, as
               of the dates thereof, include any material asset or omit any
               material liability, absolute or contingent, or other fact, the
               inclusion or omission of which renders such financial statements,
               in light of the

                                      -15-

 


<PAGE>   17



               circumstances under which they were made, misleading in any
               material respect. Since September 30, 1996, there has not been
               any change in the financial condition, results of operations or
               business of BANC ONE and its subsidiaries that has had a BANC ONE
               Material Adverse Effect. Since September 30, 1996, BANC ONE has
               issued approximately 1,284,500 additional shares of BANC ONE
               Common.

          (c)  Since December 31, 1992, BANC ONE and each of its subsidiaries
               has filed all reports, registrations and statements, together
               with any required amendments thereto, that any of them was
               required to file with (i) the SEC, including, but not limited to,
               all Forms 10-K, Forms 10-Q, Forms 8-K, annual reports and proxy
               statements, (ii) the Board, (iii) the Federal Deposit Insurance
               Corporation (the "FDIC"), (iv) the Office of the Comptroller of
               the Currency (the "OCC") and (v) any applicable state securities
               or banking authorities. All such reports and statements filed
               with any such regulatory body or authority are collectively
               referred to in this Merger Agreement as the "BANC ONE Reports."
               As of their respective dates, the BANC ONE Reports complied in
               all material respects with the respective rules and regulations
               promulgated by the SEC, the Board, the FDIC, the OCC and state
               securities or banking authorities, and did not contain at the
               time filed any untrue statement of a material fact or omit to
               state a material fact required to be stated therein or necessary
               in order to make the statements therein, in light of the
               circumstances under which they were made, not misleading.

          (d)  The Board of Directors of BANC ONE has duly authorized the
               execution and delivery of this Merger Agreement, approved the
               Merger as contemplated by said Merger Agreement and authorized
               the issuance of the shares of BANC ONE Common for shares of
               LIBERTY Common as contemplated herein. The Board of Directors of
               BANC ONE OKLAHOMA has duly authorized the execution and delivery
               of this Merger Agreement and approved the Merger as contemplated
               by said Merger Agreement. No authorization of this Merger
               Agreement, of the transactions hereby contemplated or of the
               issuance of shares as contemplated herein is required by the
               shareholders of BANC ONE. BANC ONE and BANC ONE OKLAHOMA have all
               requisite power and authority to enter into this Merger Agreement
               and, after its vote of the shares of BANC ONE OKLAHOMA in favor
               of the Merger, BANC ONE and BANC ONE OKLAHOMA will have the
               authority to consummate the transactions contemplated hereby.
               This Merger Agreement constitutes the valid, legally binding and
               enforceable obligation of each of BANC ONE and BANC ONE OKLAHOMA
               and this Merger Agreement and the consummation of the Merger

                                      -16-

 


<PAGE>   18



               have been duly authorized and approved on behalf of BANC ONE and
               BANC ONE OKLAHOMA by all requisite corporate action. Provided the
               required approvals are obtained from the Board and the Oklahoma
               Board, neither the execution and delivery of this Merger
               Agreement nor the consummation of the Merger will conflict with,
               result in the breach of, constitute a default under or accelerate
               the performance provided by the terms of any law, or any rule or
               regulation of any governmental agency or authority or any
               judgment, order or decree of any court, bank regulatory agency or
               other governmental agency to which BANC ONE or BANC ONE OKLAHOMA
               is subject, any contract, agreement or instrument to which BANC
               ONE or BANC ONE OKLAHOMA is a party or by which BANC ONE or BANC
               ONE OKLAHOMA is bound or committed, or the Articles of
               Incorporation or Regulations of BANC ONE or the Certificate of
               Incorporation or By-laws of BANC ONE OKLAHOMA, or constitute an
               event which with the lapse of time or action by a third party,
               could, to the best of the knowledge of BANC ONE and its executive
               officers, after due inquiry, result in the default under any of
               the foregoing or result in the creation of any lien, charge or
               encumbrance upon any of the assets or properties of BANC ONE or
               BANC ONE OKLAHOMA or upon any of the stock of BANC ONE or BANC
               ONE OKLAHOMA or adversely affect the ability of BANC ONE to
               consummate the transactions contemplated hereby, except, in the
               case of contracts, agreements or instruments, such defaults,
               conflicts or breaches which either (i) will be cured or waived
               prior to the Effective Time or (ii) if not so cured or waived
               would not, in the aggregate, have any BANC ONE Material Adverse
               Effect.

          (e)  The reserve for possible loan and lease losses shown on the
               September 30, 1996 Consolidated Balance Sheet of BANC ONE is
               adequate in all material respects under the requirements of
               generally accepted accounting principles to provide for possible
               losses, net of recoveries relating to loans previously charged
               off, on loans outstanding (including, without limitation, accrued
               interest receivable) as of September 30, 1996.

          (f)  Except as disclosed in the financial statements referred to in
               Section 13(b), there is no litigation, action, suit,
               investigation or proceeding pending or, to the best of the
               knowledge of BANC ONE and its executive officers after due
               inquiry, overtly threatened against or affecting BANC ONE or its
               subsidiaries or involving any of their respective properties or
               assets, at law or in equity, before any federal, state,
               municipal, local or other governmental authority, which is
               reasonably likely to be resolved adversely to the interest of
               BANC ONE or its subsidiaries and, if so resolved, would have a
               BANC ONE Material Adverse

                                      -17-

 


<PAGE>   19



               Effect or materially impair its ability, or that of BANC ONE
               OKLAHOMA, to perform under this Merger Agreement, and to the best
               of the knowledge and belief of BANC ONE and its executive
               officers after due inquiry, no one has reasonable or valid
               grounds on which it reasonably can be expected that anyone will
               assert or initiate any such litigation, action, suit,
               investigation or proceeding against BANC ONE based upon the
               wrongful action or inaction of BANC ONE or its subsidiaries or
               any of their respective officers, directors or employees.

          (g)  At the Effective Time and on such subsequent dates when the
               former shareholders of LIBERTY surrender their certificates
               formerly representing shares of LIBERTY Common for cancellation
               and exchange, the shares of BANC ONE Common to be exchanged with
               former shareholders of LIBERTY will be duly authorized and
               validly issued by BANC ONE and BANC ONE OKLAHOMA and will be
               fully paid and nonassessable and subject to no pre-emptive
               rights.

          (h)  BANC ONE and each of its subsidiaries have good and marketable
               title to all their respective assets and properties, whether real
               or personal, tangible or intangible, including without limitation
               the capital stock of its subsidiaries and all other assets and
               properties reflected in BANC ONE's Balance Sheet as of September
               30, 1996 or acquired subsequent thereto (except to the extent
               that such assets and properties have been disposed of for fair
               value in the ordinary course of business since September 30,
               1996). Such assets and properties are subject to no liens,
               mortgages, security interests, encumbrances, pledges or charges
               of any kind, except (i) as noted in said Balance Sheet or the
               notes thereto; (ii) statutory liens for taxes not yet delinquent;
               (iii) landlord's liens; and (iv) minor defects and irregularities
               in title and encumbrances which do not materially impair the use
               thereof for the purposes for which they are held; and such liens,
               mortgages, security interests, encumbrances and charges do not,
               in the aggregate, have a BANC ONE Material Adverse Effect. BANC
               ONE and its subsidiaries as lessees have the unqualified right
               under valid and subsisting leases to occupy, use, possess and
               control all property leased by BANC ONE and its subsidiaries. At
               the Effective Time all limitations affecting such properties will
               not, in the aggregate, have a BANC ONE Material Adverse Effect.

          (i)  To the best of the knowledge of BANC ONE and its executive
               officers after due inquiry, BANC ONE and its subsidiaries have
               complied with all laws, regulations and orders applicable to them
               and to the conduct of their businesses, including without
               limitation all

                                      -18-

 


<PAGE>   20



               statutes, rules and regulations pertaining to the conduct of
               banking activities except for violations which, together with any
               penalty which results therefrom, have not had and will not have a
               BANC ONE Material Adverse Effect. Neither BANC ONE nor any of its
               subsidiaries is in default under, and no event has occurred
               which, to the best of the knowledge of BANC ONE and its executive
               officers after due inquiry, is likely to result in a default
               under the terms of any judgment, decree, order, writ, rule or
               regulation of any governmental authority or court, whether
               federal, state or local and whether at law or in equity, in each
               case where the default has had or is likely to have a BANC ONE
               Material Adverse Effect.

          (j)  BANC ONE and BANC ONE OKLAHOMA have not incurred and will not
               incur directly or indirectly any liability for brokerage,
               finders', agents' or investment bankers' fees or commissions in
               connection with this Merger Agreement or the transactions
               contemplated hereby.

          (k)  Each pension, stock bonus or purchase, profit-sharing,
               retirement, health and welfare plan maintained by or covering
               employees of BANC ONE or any subsidiary of BANC ONE (hereinafter
               referred to collectively as the "plans") which purports to be a
               qualified plan under Section 401(a) of the Internal Revenue Code
               is so qualified. All of the plans which constitute employee
               benefit or employee welfare benefit plans subject to the Employee
               Retirement Income Security Act of 1974, as amended ("ERISA"),
               have been maintained in compliance in all material respects with
               the applicable requirements of ERISA. All material notices,
               reports and other filings required under applicable law to be
               given or made to or with any governmental agency with respect to
               the plans have been timely filed or delivered. BANC ONE and its
               executive officers, after due inquiry, have no knowledge either
               of any circumstances which would adversely affect the
               qualification of the plans or their compliance with the
               applicable requirements of ERISA, would result or have resulted
               in liability under Title IV of ERISA or of any "reportable event"
               (as such term is defined in Section 4043(b) of ERISA) or any
               "prohibited transaction" (as such term is defined in Section 406
               of ERISA and Section 4975(c) of the Internal Revenue Code) which
               has occurred during the past five years and which could
               reasonably be expected to result in any material liability of
               BANC ONE or any subsidiary to the Pension Benefit Guaranty
               Corporation (the "PBGC"), the Department of Treasury, the
               Department of Labor or any multiemployer plan. Those plans which
               are defined benefit plans within the meaning of ERISA meet the
               minimum funding standards set forth in the Internal Revenue Code
               and

                                      -19-

 


<PAGE>   21



               ERISA and the assets of such plans equal or exceed the actual
               present value of accrued benefits under such plans determined on
               the basis of the actuarial assumptions contained in the plan's
               most recent actuarial valuation. There are no pending or
               threatened claims (other than claims for benefits in the ordinary
               course), lawsuits or arbitrations which have been asserted or
               instituted against the plans, any fiduciaries thereof with
               respect to their duties to the plans or the assets of any of the
               trusts under any of the plans which could reasonably be expected
               to result in any material liability of BANC ONE or any subsidiary
               to the PBGC, Department of Treasury, Department of Labor or any
               multiemployer plan.

          (l)  Except where the failure to file would not have a BANC ONE
               Material Adverse Effect on BANC ONE and its subsidiaries, BANC
               ONE and/or its subsidiaries have duly filed all federal, state,
               county and local income, franchise, bank, excise, real and
               personal property and other tax returns and reports (including,
               but not limited to, those relating to social security,
               withholding, unemployment insurance, and occupation (sales) and
               use taxes and those filed on a consolidated, combined or unitary
               basis) required to have been filed by BANC ONE or its
               subsidiaries up to the date hereof. All of the foregoing returns
               are true and correct in all material respects, and BANC ONE and
               its subsidiaries have paid or, prior to the Effective Time, will
               pay all taxes, interest and penalties shown on such returns or
               reports as being due or (except to the extent the same are
               contested in good faith and, if material, summarized in the BANC
               ONE Disclosure Letter) or claimed to be due to any federal,
               state, county, local or other taxing authority, and there is, and
               at the Effective Time will be, no basis for any additional claim
               or assessment which might have a BANC ONE Material Adverse
               Effect, except for those being contested in good faith and
               summarized in the BANC ONE Disclosure Letter. BANC ONE and its
               subsidiaries have paid or made adequate provision in its
               financial statements or its books and records for all taxes
               payable in respect of all periods ending on or before the date
               hereof. BANC ONE and its subsidiaries have, and at the Effective
               Time will have, no liability for any taxes, interest or penalties
               of any nature whatsoever, except for those taxes which may have
               arisen up to the Effective Time in the ordinary course of
               business and are properly accrued on the books of BANC ONE as of
               the Effective Time or are being contested in good faith and have,
               if material, been summarized in the BANC ONE Disclosure Letter.

          (m)  BANC ONE has in effect insurance coverage with reputable
               insurers, which in respect of amounts, premiums, types and risks
               insured, constitutes reasonably adequate coverage

                                      -20-

 


<PAGE>   22



               against all risks customarily insured against by bank holding
               companies comparable in size and operation to BANC ONE.

          (n)  Neither the Proxy Statement nor the related registration
               statement nor any amendment or supplement thereto that is filed
               with the SEC in connection with the transactions contemplated
               hereby (except for any information which has been or shall be
               supplied by LIBERTY for inclusion in the Proxy Statement and
               registration statement and is so included as so supplied) shall
               contain (in the case of information relating to the Proxy
               Statement, at the time it is mailed and in the case of
               information relating to the registration statement at the time it
               becomes effective and at the time of LIBERTY's shareholders'
               meeting) any untrue statement of a material fact or shall omit to
               state a material fact necessary to make the statements contained
               therein, in light of the circumstances in which they are made,
               not misleading. The registration statement and any amendments or
               supplements thereto that are filed with the SEC in connection
               with the transactions contemplated hereby will comply as to form
               in all material respects with the provisions of the 1933 Act and
               the rules and regulations promulgated thereunder.

          (o)  No employee of BANC ONE or any of its subsidiaries is
               represented, for purposes of collective bargaining, by a labor
               organization of any type. BANC ONE is unaware of any efforts
               during the past five years to unionize or organize any employees
               of BANC ONE or any of its subsidiaries, and no claim related to
               such employees under the Fair Labor Standards Act, National Labor
               Relations Act, Civil Rights Act of 1964, Walsh-Healy Act, Davis
               Bacon Act, Civil Rights Act of 1866, Age Discrimination in
               Employment Act, Equal Pay Act of 1963, Executive Order No. 11246,
               Federal Unemployment Tax Act, Vietnam Era Veterans Readjustment
               Act, Occupational Safety and Health Act, or any state or local
               employment related law, order, ordinance or regulation, no unfair
               labor practice, discrimination or wage-and-hour claim is pending
               or, to the best of knowledge of BANC ONE and its executive
               officers after due inquiry, threatened against BANC ONE or any of
               its subsidiaries which claim has had or is reasonably likely to
               have a BANC ONE Material Adverse Effect.

          (p)  To the actual knowledge of BANC ONE and its executive officers:
               (i) with respect to any contaminant, pollutant, hazardous
               substance, hazardous waste, hazardous pollutant, toxic pollutant,
               toxic waste or toxic substance ("Contaminant"), there are no
               material actions, proceedings or investigations pending or
               threatened before any federal or state

                                      -21-

 


<PAGE>   23



               environmental regulatory body, or before any federal or state
               court, alleging non-compliance with or liability in connection
               with, by BANC ONE or any of its subsidiaries, the Comprehensive
               Environmental Response, Compensation and Liability Act, 42 U.S.C.
               ss.ss. 9601 et seq. ("CERCLA"), the Resource Conservation and
               Recovery Act, 42 U.S.C. ss.ss. 6901 et seq. ("RCRA"), the Clean
               Water Act, 33 U.S.C. ss.ss. 1251 et seq. ("CWA"), or the Clean
               Air Act, 42 U.S.C. ss.ss. 7401 et seq. ("CAA"), as each is
               amended from time to time, or any other federal, state, local or
               municipal statute, ordinance or regulation, or order, ruling or
               other decision of any court, administrative agency or other
               governmental authority relating to health or safety or
               environmental protection (such statutes, ordinances, regulations,
               orders, rulings and decisions, together, "Environmental Laws");
               (ii) neither BANC ONE nor any of its subsidiaries is responsible
               in any material respect under any Environmental Law for any
               release by any person at or in the vicinity of real property of
               any Contaminant, including without limitation by spilling,
               leaking, pumping, pouring, emitting, emptying, discharging,
               injecting, escaping, leaching, dumping or disposing of any such
               Contaminant into the environment (collectively "Release"); (iii)
               neither BANC ONE nor any of its subsidiaries is responsible for
               any material costs of any response action required by virtue of
               any Release of any Contaminant into the environment including,
               without limitation, costs arising from investigation, removal or
               remediation of Contaminants, security fencing, alternative water
               supplies, temporary evacuation and housing and other emergency
               assistance undertaken by any environmental regulatory body or any
               other person; (iv) BANC ONE and its subsidiaries are, in all
               material respects, in compliance with all applicable
               Environmental Laws; and (v) no real property owned or used by
               BANC ONE or any of its subsidiaries contains any Contaminant
               including, without limitation, any asbestos, PCBs or petroleum
               products or byproducts in any form, the presence, location or
               condition of which (a) is reasonably likely to require
               remediation or other corrective action pursuant to any
               Environmental Law in any material respect, or (b) otherwise would
               pose any significant health or safety risk unless remedial
               measures were taken.

          (q)  BANC ONE and/or its subsidiaries (i) have surveyed the facilities
               where BANC ONE and its subsidiaries conduct their business
               including, without limitation, automatic teller machines
               (collectively, the "BANC ONE Facilities") for compliance with the
               Americans with Disabilities Act and the regulations issued
               thereunder (collectively, "ADA"); (ii) have developed plans to
               remove architectural barriers including communication barriers
               that are structural in nature from existing BANC ONE Facilities
               (collectively, the "BANC

                                      -22-

 


<PAGE>   24



               ONE Barriers") when such removal is "readily achievable," as that
               term is defined in ADA; (iii)have finalized action plans for
               automatic teller machines ("ATMs") in conformance with the Joint
               Final Rule of the Architectural and Transportation Barriers
               Compliance Board ("ATBCB") and the Department of Transportation,
               effective August 16, 1993; (iv) have developed or will develop
               schedules for BANC ONE Barrier removal from BANC ONE Facilities
               in such action plans so that BANC ONE Barrier removal was
               complete on January 26, 1992 or will be completed as soon as
               practicable thereafter; and (v) have removed all BANC ONE
               Barriers in BANC ONE Facilities or will cause all BANC ONE
               Barriers to be removed in accordance with such action plans. All
               "alterations" (as such term is defined in ADA) to BANC ONE
               Facilities undertaken after January 26, 1992 comply with ADA and
               the ATBCB Accessibility Guidelines for Buildings and Facilities
               ("ADAAG"). Effective January 26, 1992, all plans and designs for
               new construction to be utilized by BANC ONE and its subsidiaries
               comply with ADA and ADAAG. To the best of the knowledge of BANC
               ONE and its executive officers after due inquiry, no
               investigations, proceedings, or complaints, formal or informal,
               are pending or threatened against BANC ONE and/or its
               subsidiaries in connection with BANC ONE Facilities under ADA,
               ADAAG, or any other state or federal law concerning accessibility
               for individuals with disabilities.

          (r)  The statements made in the BANC ONE Disclosure Letter and any
               attachments thereto shall be deemed to constitute representations
               and warranties of BANC ONE under this Merger Agreement to the
               same extent as if herein set forth in full. Anything disclosed in
               the BANC ONE Disclosure Letter or the attachments thereto shall
               be considered to have been disclosed for purposes of all
               representations, warranties and covenants under this Merger
               Agreement.

     14.  REPRESENTATIONS AND WARRANTIES OF BANC ONE OKLAHOMA. BANC ONE OKLAHOMA
          represents and warrants to LIBERTY that, except as set forth in the
          BANC ONE Disclosure Letter, and except as otherwise indicated below:

          (a)  BANC ONE OKLAHOMA is a corporation duly organized and validly
               existing in good standing under the laws of the State of Oklahoma
               and is qualified to do business and is in good standing in the
               State of Oklahoma together with all other jurisdictions where it
               is both required to so qualify and where the failure to so
               qualify would have a BANC ONE Material Adverse Effect and BANC
               ONE OKLAHOMA has full power and authority

                                      -23-

 


<PAGE>   25



               (including all licenses, franchises, permits and other
               governmental authorizations which are legally required) to engage
               in the businesses and activities now conducted by it. The
               authorized capital stock of BANC ONE OKLAHOMA is 500 shares of
               BANC ONE OKLAHOMA Common, all of which are issued and outstanding
               and owned by BANC ONE free and clear of all liens, security
               interests or other encumbrances. BANC ONE OKLAHOMA's only
               subsidiary is Bank One, Oklahoma.

          (b)  The Board of Directors of BANC ONE OKLAHOMA has duly authorized
               execution of this Merger Agreement and approved the merger with
               LIBERTY as contemplated by said Merger Agreement. BANC ONE, the
               sole shareholder of BANC ONE OKLAHOMA, will vote all the shares
               of BANC ONE OKLAHOMA to approve the Merger and adopt this Merger
               Agreement. BANC ONE OKLAHOMA has all requisite power and
               authority to enter into this Merger Agreement and has the
               authority to consummate the transactions contemplated hereby.
               This Merger Agreement constitutes the valid and legally binding
               obligation of BANC ONE OKLAHOMA and this Merger Agreement and the
               consummation hereof have been duly authorized and approved on
               behalf of BANC ONE OKLAHOMA by all requisite corporate action.
               Provided the required approvals are obtained from the Board and
               the Oklahoma Board, neither the execution and delivery of this
               Merger Agreement nor the consummation of the Merger will conflict
               with, result in the breach of, constitute a default under or
               accelerate the performance provided by the terms of any law, or
               any rule or regulation of any governmental agency or authority or
               any judgment, order or decree of any court, bank regulatory
               agency or other governmental agency to which BANC ONE OKLAHOMA
               may be subject, any contract, agreement or instrument to which
               BANC ONE OKLAHOMA is a party or by which BANC ONE OKLAHOMA is
               bound or committed, or the Certificate of Incorporation or
               By-laws of BANC ONE OKLAHOMA, or constitute an event which with
               the lapse of time or action by a third party, could, to the best
               of BANC ONE OKLAHOMA's knowledge, result in the default under any
               of the foregoing or result in the creation of any lien, charge or
               encumbrance upon any of the assets or properties of BANC ONE
               OKLAHOMA or adversely affect the ability of BANC ONE to
               consummate the transactions contemplated hereby.

     15.  REPRESENTATIONS AND WARRANTIES OF LIBERTY. LIBERTY represents and
          warrants to BANC ONE that, except as shall be set forth in LIBERTY's
          disclosure letter dated December 27, 1996, and any attachments or
          schedules annexed thereto, and delivered to BANC ONE not later than

                                      -24-

 


<PAGE>   26



          the time of BANC ONE's execution of this Merger Agreement (the
          "LIBERTY Disclosure Letter"), and except as indicated below:

          (a)  LIBERTY is a corporation duly organized and validly existing in
               good standing under the laws of the State of Oklahoma, is a
               registered bank holding company under the Bank Holding Company
               Act of 1956, as amended, and is qualified to do business and is
               in good standing in the State of Oklahoma, together with all
               other jurisdictions where it is both required to so qualify and
               where the failure to so qualify would have a LIBERTY Material
               Adverse Effect, as hereinafter defined. A LIBERTY Material
               Adverse Effect is that which has or would have a material adverse
               effect on the business, operations, financial condition or
               results of operations of LIBERTY and the Subsidiaries taken as a
               whole, or on the ability of LIBERTY to consummate the
               transactions contemplated hereby. LIBERTY and the Subsidiaries
               each have full power and authority (including all licenses,
               franchises, permits and other governmental authorizations which
               are legally required) to engage in the businesses and activities
               now conducted by it. LIBERTY is not subject to any formal or
               informal agreement or understanding with, nor is it subject to
               any order of, any bank regulatory authority restricting or
               prohibiting or attempting to restrict or prohibit any activities
               or conduct of LIBERTY. Subject only to obtaining the required
               regulatory approvals and the approval of LIBERTY shareholders,
               LIBERTY is, and at all times after the date of this Merger
               Agreement to and including the Effective Time will be, authorized
               to effect the Merger under applicable law. As of September 30,
               1996, LIBERTY had authorized capital stock consisting of
               50,000,000 shares of LIBERTY Common, of which a total of
               9,448,538 shares were issued and outstanding and 39,890 of which
               were shares of treasury stock owned by LIBERTY. All of the issued
               and outstanding shares of LIBERTY Common are duly authorized,
               validly issued, fully paid, nonassessable and subject to no
               pre-emptive rights. There are no outstanding options, warrants,
               stock appreciation rights or commitments of any kind related to
               LIBERTY's capital stock or the exchange of LIBERTY's capital
               stock except for (i) outstanding stock options which have been
               granted related to the purchase of not more than 615,705 shares
               of LIBERTY Common pursuant to the Liberty Bancorp, Inc. 1990
               Stock Option Plan, As Amended (the "LIBERTY Option Plan"), (ii)
               outstanding stock options which have been granted related to the
               purchase of not more than 289,694 shares of LIBERTY Common
               pursuant to an Option to Purchase Common Stock between LIBERTY
               and Henke (the "Henke Option"), and (iii) the option to be
               granted to BANC ONE pursuant to Section 21 of this Merger
               Agreement. As of September 30, 1996, LIBERTY had surplus of
               $210,184,000, retained

                                      -25-

 


<PAGE>   27



               earnings, including capital reserves, of $63,898,000, net
               unrealized holding gains/(losses) available for sale (net of tax)
               of $1,798,000, and total consolidated assets of $2,905,361,000.

          (b)  LIBERTY has furnished to BANC ONE copies of the following
               financial statements relating to LIBERTY and the Subsidiaries on
               a consolidated basis: (i) the audited Consolidated Balance Sheet
               of LIBERTY as of December 31, 1995 and 1994, and the Consolidated
               Statements of Income, Stockholders' Equity and Cash Flows for the
               years then ended, together with the notes thereto, as audited by
               Arthur Andersen LLP, Certified Public Accountants; and (ii) the
               unaudited Consolidated Balance Sheet of LIBERTY as at September
               30, 1996 and the unaudited Consolidated Statement of Income for
               the period then ended, together with the notes thereto. Each of
               the aforementioned financial statements presents fairly, in
               accordance with generally accepted accounting principles (applied
               on a consistent basis except as disclosed in the footnotes
               thereto), the consolidated financial position and results of
               operations of LIBERTY as of the dates and for the periods therein
               set forth. Such financial statements do not, as of the dates
               thereof, include any material asset or omit any material
               liability, absolute or contingent, or other fact, the inclusion
               or omission of which renders such financial statements, in light
               of the circumstances under which they were made, misleading in
               any material respect. Since September 30, 1996, there has not
               been any change in the financial condition, results of operations
               or business of LIBERTY and the Subsidiaries that has had a
               LIBERTY Material Adverse Effect. Since September 30, 1996,
               LIBERTY has issued and acquired shares of LIBERTY Common
               resulting in 9,445,075 shares of LIBERTY Common being outstanding
               as of December 27, 1996.

          (c)  Since December 31, 1992, LIBERTY and each of the Subsidiaries has
               filed all reports, registrations and statements, together with
               any required amendments thereto, that any of them was required to
               file with (i) the SEC, including, but not limited to, all Forms
               10-K, Forms 10-Q, Forms 8-K, annual reports and proxy statements,
               (ii) the Board, (iii) the FDIC, (iv) OCC and (v) any applicable
               state securities or banking authorities. All such reports and
               statements filed with any such regulatory body or authority are
               collectively referred to in this Merger Agreement as the "LIBERTY
               Reports." As of their respective dates, the LIBERTY Reports
               complied in all material respects with the respective rules and
               regulations promulgated by the SEC, the Board, the FDIC, the OCC
               and state securities or banking authorities, and did not contain
               at the time filed any untrue statement

                                      -26-

 


<PAGE>   28



               of a material fact or omit to state a material fact required to
               be stated therein or necessary in order to make the statements
               therein, in light of the circumstances under which they were
               made, not misleading.

          (d)  The Board of Directors of LIBERTY has duly authorized the
               execution and delivery of this Merger Agreement and approved the
               Merger as contemplated by the Merger Agreement and, subject to
               the fiduciary duties of the Board of Directors, will recommend it
               to the LIBERTY shareholders for adoption. Subject to the approval
               by the shareholders of LIBERTY, this Merger Agreement constitutes
               the valid, legally binding and enforceable obligation of LIBERTY
               and LIBERTY has all requisite power and authority to enter into
               this Merger Agreement and LIBERTY has the authority to consummate
               the transactions contemplated hereby so that, provided all such
               shareholder and regulatory approvals are obtained, neither the
               execution and delivery of this Merger Agreement nor the
               consummation of the Merger will conflict with, result in the
               breach of, constitute a default under or accelerate the
               performance provided by the terms of any law, or any rule or
               regulation of any governmental agency or authority or any
               judgment, order or decree of any court, bank regulatory agency or
               other governmental agency to which LIBERTY is subject, any
               contract, agreement or instrument to which LIBERTY is a party or
               by which LIBERTY is bound or committed, or the Certificate of
               Incorporation or By-Laws of LIBERTY, or constitute an event which
               with the lapse of time or action by a third party, could, to the
               best of the knowledge of LIBERTY and its executive officers after
               due inquiry, result in the default under any of the foregoing or
               result in the creation of any lien, charge or encumbrance upon
               any of the assets or properties of LIBERTY or upon any of
               LIBERTY's capital stock; except, in the case of contracts,
               agreements or instruments, such defaults, conflicts or breaches
               which either (i) will be cured or waived prior to the Effective
               Time or (ii) if not so cured or waived would not, in the
               aggregate, have a LIBERTY Material Adverse Effect.

          (e)  The reserve for possible loan and lease losses shown on the
               September 30, 1996 Consolidated Balance Sheet of LIBERTY is
               adequate in all material respects under the requirements of
               generally accepted accounting principles to provide for possible
               losses, net of recoveries relating to loans previously charged
               off, on loans outstanding (including, without limitation, accrued
               interest receivable) as of September 30, 1996.

                                      -27-

 


<PAGE>   29



          (f)  Except as disclosed in the financial statements referred to in
               Section 15(b), there is no litigation, action, suit,
               investigation or proceeding pending or, to the best of the
               knowledge LIBERTY and its executive officers after due inquiry,
               overtly threatened, against or affecting LIBERTY or any of its
               Subsidiaries or involving any of their respective properties or
               assets, at law or in equity, before any federal, state,
               municipal, local or other governmental authority which is
               reasonably likely to be resolved adversely to the interest of
               LIBERTY or its Subsidiaries and, if so resolved, would have a
               LIBERTY Material Adverse Effect, and to the best of the knowledge
               and belief of LIBERTY and its executive officers after due
               inquiry, no one has reasonable or valid grounds on which it
               reasonably can be expected that anyone will assert or initiate
               any such litigation, action, suit, investigation or proceeding
               against LIBERTY based upon the wrongful action or inaction of
               LIBERTY or any of its Subsidiaries or any of their respective
               officers, directors or employees.

          (g)  LIBERTY and its Subsidiaries have good and marketable title to
               all their respective assets and properties, whether real or
               personal, tangible or intangible, including without limitation
               the capital stock of its Subsidiaries and all other assets and
               properties reflected in LIBERTY's Balance Sheet as of September
               30, 1996 or acquired subsequent thereto (except to the extent
               that such assets and properties have been disposed of for fair
               value in the ordinary course of business since September 30,
               1996). Such assets and properties are subject to no liens,
               mortgages, security interests, encumbrances, pledges or charges
               of any kind, except (i) as reflected in said Balance Sheet or the
               notes thereto; (ii) statutory liens for taxes not yet delinquent;
               (iii) landlord's liens; and (iv) minor defects and irregularities
               in title and encumbrances which do not materially impair the use
               thereof for the purposes for which they are held; and such liens,
               mortgages, security interests, encumbrances and charges do not,
               in the aggregate, have a LIBERTY Material Adverse Effect. LIBERTY
               and its Subsidiaries as lessee have the unqualified right under
               valid and subsisting leases to occupy, use, possess and control
               all property leased by LIBERTY and its Subsidiaries. At the
               Effective Time all limitations affecting such properties will
               not, in the aggregate, have a LIBERTY Material Adverse Effect.

          (h)  To the best of the knowledge of LIBERTY and its executive
               officers after due inquiry, LIBERTY and its Subsidiaries have
               complied with all laws, regulations and orders applicable to them
               and to the conduct of their businesses, including without
               limitation, all statutes, rules and regulations pertaining to the
               conduct of banking activities except for

                                      -28-

 


<PAGE>   30



               violations which together with any penalty which results
               therefrom have not had and will not have a LIBERTY Material
               Adverse Effect. Neither LIBERTY nor any of its Subsidiaries is in
               default under, and no event has occurred which, to the best of
               the knowledge of LIBERTY and its executive officers after due
               inquiry, is likely to result in the default under the terms of
               any judgment, decree, order, writ, rule or regulation of any
               governmental authority or court, whether federal, state or local
               and whether at law or in equity, in each case when the default
               has had or is likely to have a LIBERTY Material Adverse Effect.

          (i)  LIBERTY has not incurred and will not incur any liability for
               brokerage, finders', agents', or investment bankers' fees or
               commissions in connection with this Merger Agreement or the
               transactions contemplated hereby except for fees to Morgan
               Stanley & Co. Incorporated to be determined in accordance with
               the terms of that certain engagement letter dated December 12,
               1996, which is annexed as an exhibit to the LIBERTY Disclosure
               Letter.

          (j)  Except as set forth in the LIBERTY Document List (the "LIBERTY
               Document List") attached to the LIBERTY Disclosure Letter,
               neither LIBERTY nor any of its Subsidiaries is a party to or
               bound by any written or oral (i) employment or consulting
               contract which is not terminable by LIBERTY or its Subsidiaries
               on 60 days or less notice, (ii) employee bonus, deferred
               compensation, pension, stock bonus or purchase, profit-sharing,
               retirement or stock option plan, (iii) other employee benefit or
               welfare plan, or (iv) other executory material agreements as
               defined by the instructions to Exhibit 10 under Item 601 of SEC
               Regulation S-K. All such pension, stock bonus, profit-sharing,
               retirement, health and welfare plans set forth in the LIBERTY
               Document List are hereinafter referred to collectively as the
               "Plans." Each of those Plans which purports to be a qualified
               plan under Section 401(a) of the Internal Revenue Code is so
               qualified and nothing has occurred, to the knowledge of LIBERTY
               and its executive officers, whether by action or the failure to
               act, which could reasonably be expected to result in the loss of
               such qualification. All of the plans which constitute employee
               pension benefit plans or employee welfare plans subject to ERISA
               have been maintained in compliance in all material respects with
               ERISA. All material notices, reports and other filings required
               under applicable law to be given or made to or with any
               governmental agency with respect to the plans have been timely
               filed or delivered. LIBERTY and its executive officers, after due
               inquiry, have no knowledge either of any circumstances which
               would adversely affect

                                      -29-

 


<PAGE>   31



               the qualification of the plans or their compliance with ERISA,
               would result or have resulted in liability under Title IV of
               ERISA or of any unreported "reportable event" (as such term is
               defined in Section 4043(b) of ERISA) or "prohibited transaction"
               (as such term is defined in Section 406 of ERISA and Section
               4975(c) of the Internal Revenue Code) which has occurred during
               the past five years and which could reasonably be expected to
               result in any material liability of LIBERTY or any Subsidiary to
               the PBGC, the Department of Treasury, the Department of Labor or
               any multiemployer plan. Those plans which are defined benefit
               plans within the meaning of ERISA meet the minimum funding
               standards set forth in the Internal Revenue Code and ERISA and
               the assets of such plans equal or exceed the actual present value
               of accrued benefits under such plans as determined on the basis
               of the actuarial assumptions contained in the plan's most recent
               actuarial valuation. There are no pending or threatened claims
               (other than claims for benefits in the ordinary course and
               pursuant to domestic relations orders), lawsuits or arbitrations
               which have been asserted or instituted against the plans, any
               fiduciaries thereof with respect to their duties to the plans or
               the assets of any of the trusts under any of the plans which
               could reasonably be expected to result in any material liability
               of LIBERTY or any of its Subsidiaries to the PBGC, the Department
               of Treasury, the Department of Labor or any multiemployer plan.

          (k)  Except where the failure to file would not have a LIBERTY
               Material Adverse Effect on LIBERTY and its Subsidiaries, LIBERTY
               and/or its Subsidiaries have duly filed all federal, state,
               county and local income, franchise, bank, excise, real and
               personal property and other tax returns and reports (including,
               but not limited to, those relating to social security,
               withholding, unemployment insurance, and occupation (sales) and
               use taxes and those filed on a consolidated, combined or unitary
               basis) required to have been filed by LIBERTY or its Subsidiaries
               up to the date hereof. LIBERTY has made available to BANC ONE a
               copy of its Federal income tax return for the years 1995 and 1994
               and agrees to provide a copy of its Federal income tax return for
               the year 1996 when the same becomes available. All of the
               foregoing returns are true and correct in all material respects,
               and LIBERTY and its Subsidiaries have paid or, prior to the
               Effective Time, will pay all taxes, interest and penalties shown
               on such returns or reports as being due or (except to the extent
               the same are contested in good faith and, if material, summarized
               in the LIBERTY Disclosure Letter) claimed to be due to any
               federal, state, county, local or other taxing authority, and
               there is, and at the Effective Time will be, no basis for any
               additional claim or assessment which might have a LIBERTY
               Material Adverse Effect,

                                      -30-

 


<PAGE>   32



               except for those being contested in good faith and summarized in
               the LIBERTY Disclosure Letter. LIBERTY and its Subsidiaries have
               paid or made adequate provision in its financial statements or
               its books and records for all taxes payable in respect of all
               periods ending on or before the date hereof. LIBERTY and its
               Subsidiaries have, and at the Effective Time will have, no
               liability for any taxes, interest or penalties of any nature
               whatsoever, except for those taxes which may have arisen up to
               the Effective Time in the ordinary course of business and are
               properly accrued on the books of LIBERTY as of the Effective Time
               or are being contested in good faith and have, if material, been
               summarized in the LIBERTY Disclosure Letter.

          (l)  LIBERTY has in effect insurance coverage with reputable insurers
               which in respect of amounts, premiums, types and risks insured,
               constitutes reasonably adequate coverage against all risks
               customarily insured against by bank holding companies comparable
               in size and operation to LIBERTY.

          (m)  LIBERTY has not, since September 30, 1996 to the date hereof, (i)
               sold or issued any corporate debt securities or sold, issued,
               reissued or increased its shares of its capital stock; (ii)
               granted any option for the purchase of capital stock other than
               with respect to existing stock option plans as described in the
               Benefits Agreement; (iii) declared or set aside or paid any
               dividend or other distribution in respect of its capital stock,
               except as permitted pursuant to Section 16(a) hereof or directly
               or indirectly, purchased, redeemed or otherwise acquired any
               shares of such stock; (iv) incurred any obligation or liability
               (absolute or contingent) except obligations or liabilities
               incurred in the ordinary course of business, or mortgaged,
               pledged or subjected to lien or encumbrance (other than
               landlord's liens and statutory liens for taxes not yet delinquent
               and banking transactions conducted in the ordinary course of
               business) on any of its material assets or properties; (v)
               discharged or satisfied any material lien or encumbrance or paid
               any material obligation or liability (absolute or contingent),
               other than liabilities included in LIBERTY's financial statements
               as of September 30, 1996, liabilities incurred since the date
               thereof in the ordinary course of business and liabilities
               incurred in carrying out the transactions contemplated by this
               Merger Agreement; (vi) sold, exchanged or otherwise disposed of
               any material capital assets; (vii) made any extraordinary
               officers' salary increase or wage increase, entered into any
               employment contract with any officer or salaried employee or
               instituted any employee welfare, bonus, stock option,
               profit-sharing, retirement or similar plan or arrangement; (viii)
               suffered any damage, destruction or loss, whether or not

                                      -31-

 


<PAGE>   33



               covered by insurance, that has had a LIBERTY Material Adverse
               Effect or waived any rights of value which, in the aggregate,
               have had a LIBERTY Material Adverse Effect; (ix) entered or
               agreed to enter into any agreement or arrangement granting any
               preferential right to purchase any of its material assets,
               properties or rights or requiring the consent of any party to the
               transfer and assignment of any such material assets, properties
               or rights; or (x) entered into any other material transaction
               (other than in the ordinary course of business) except as
               expressly contemplated by this Merger Agreement.

          (n)  LIBERTY has annexed to the LIBERTY Disclosure Letter a loan
               schedule identifying certain loan agreements, notes and borrowing
               arrangements (the "LIBERTY Loan Schedule") between its
               Subsidiaries and borrowers of its Subsidiaries. Except as
               specifically noted on the LIBERTY Loan Schedule, no Subsidiary
               was, as of November 30, 1996, a party to any written or oral (i)
               loan agreement, note or borrowing arrangement, other than credit
               card loans and other loans the unpaid balance of which does not
               exceed $100,000 per loan, under the terms of which the obligor is
               over 60 days delinquent in payment of principal or interest or,
               to the best of LIBERTY's knowledge, in default of any other
               provision as of the dates shown thereon; (ii) loan agreement,
               note or borrowing arrangement which has been classified as
               "substandard," "doubtful," "loss," "other loans especially
               mentioned" or any comparable classifications by LIBERTY, a
               Subsidiary or banking regulator; (iii) loan agreement, note, or
               borrowing arrangement, including any loan guaranty, with any
               director, executive officer or ten percent shareholder of LIBERTY
               or, to the actual knowledge of LIBERTY and its executive officers
               after due inquiry, any person, corporation or enterprise
               controlling, controlled by or under common control with any of
               the foregoing; or, (iv) to the best of the knowledge of LIBERTY
               and its executive officers after due inquiry, loan agreement,
               note or borrowing arrangement in violation of any law, regulation
               or rule of any governmental authority and which violation could,
               to the best of the knowledge of LIBERTY and its executive
               officers after due inquiry, have a LIBERTY Material Adverse
               Effect.

          (o)  None of the information provided by LIBERTY to BANC ONE for
               inclusion in the Proxy Statement or related registration
               statement or any amendment or supplement thereto (to the extent
               so included as so provided) shall contain (in the case of
               information relating to the Proxy Statement, at the time it is
               mailed and in the case of information relating to the
               registration statement, at the time it becomes effective) any
               untrue statement of a material fact or shall omit to state a
               material fact necessary to make the statements contained

                                      -32-

 


<PAGE>   34



               therein, in light of the circumstances in which they are made,
               not misleading. The Proxy Statement that is filed with the SEC in
               connection with the meeting of the shareholders of LIBERTY will
               comply as to form in all material respects with the provisions of
               the Exchange Act and the rules and regulations promulgated
               thereunder.

          (p)  Neither LIBERTY nor any Subsidiary is, as of the date hereof, a
               party to any material contract and/or any material credit
               agreement as obligor, maker, issuer or guarantor and which
               contract or agreement contains covenants which make the
               acquisition of LIBERTY or any Subsidiary by or merger with
               another entity a condition of default or acceleration.

          (q)  Attached hereto as EXHIBIT A is LIBERTY's Subsidiaries List which
               sets forth the complete legal name of each Subsidiary, a
               designation of the laws under which each Subsidiary is
               incorporated and the activities conducted by each Subsidiary.
               Except as set forth in EXHIBIT A, LIBERTY has no subsidiaries.
               Each of the Subsidiaries is a corporation, limited liability
               company or similar entity duly organized and validly existing in
               good standing under the laws of the United States or the state of
               its incorporation or organization and has full power and
               authority (including all licenses, franchises, permits and other
               governmental authorizations which are legally required) to engage
               in the businesses and activities now conducted by it and is duly
               qualified to do business and is in good standing in all
               jurisdictions where the failure to so qualify (together with all
               such failures) would have a LIBERTY Material Adverse Effect.
               Except as may be set forth in EXHIBIT A, LIBERTY and/or one or
               more of its Subsidiaries owns beneficially and of record all the
               outstanding shares of capital stock of each Subsidiary, which
               stock is fully paid and non-assessable (except as provided in 12
               U.S.C.ss.55 and similar state laws). Neither LIBERTY nor any of
               its Subsidiaries is a party to any partnership or joint venture
               or owns more than 5% of the equity or voting interest in any
               entity or enterprise except as may be set forth and described in
               the LIBERTY Disclosure Letter.

          (r)  No employee of LIBERTY or any of its Subsidiaries is represented,
               for purposes of collective bargaining, by a labor organization of
               any type. LIBERTY is unaware of any efforts during the past five
               years to unionize or organize any employees of LIBERTY or any of
               its Subsidiaries, and no claim related to such employees under
               the Fair Labor Standards Act, National Labor Relations Act, Civil
               Rights Act of 1964, Walsh-Healy Act, Davis Bacon Act, Civil
               Rights Act of 1866, Age Discrimination in Employment Act, Equal
               Pay Act of 1963, Executive Order No. 11246, Federal Unemployment
               Tax Act,

                                      -33-

 


<PAGE>   35



               Vietnam Era Veterans Readjustment Act, Occupational Safety and
               Health Act, or any state or local employment related law, order,
               ordinance or regulation, no unfair labor practice, discrimination
               or wage-and-hour claim is pending or, to the best of the
               knowledge of LIBERTY and its executive officers after due
               inquiry, threatened against LIBERTY or its Subsidiaries, which
               claim has had or is reasonably likely to have a LIBERTY Material
               Adverse Effect.

          (s)  To the actual knowledge of LIBERTY and its executive officers:
               (i) with respect to any Contaminant, there are no material
               actions, proceedings or investigations pending or threatened
               before any federal or state environmental regulatory body, or
               before any federal or state court, alleging non-compliance with
               or liability in connection with, by LIBERTY or any Subsidiary,
               CERCLA or any other Environmental Laws; (ii) neither LIBERTY nor
               any Subsidiary is responsible in any material respect under any
               Environmental Law for any Release by any person at or in the
               vicinity of any real property of any Contaminant, including
               without limitation by spilling, leaking, pumping, pouring,
               emitting, emptying, discharging, injecting, escaping, leaching,
               dumping or disposing of any such Contaminant into the
               environment; (iii) neither LIBERTY nor any Subsidiary is
               responsible for any material costs of any response action
               required by virtue of any Release of any Contaminant into the
               environment including, without limitation, costs arising from
               investigation, removal or remediation of Contaminants, security
               fencing, alternative water supplies, temporary evacuation and
               housing and other emergency assistance undertaken by any
               environmental regulatory body or any other person; (iv) LIBERTY
               and each Subsidiary is, in all material respects, in compliance
               with all applicable Environmental Laws; and (v) no real property
               owned or used by LIBERTY or any Subsidiary contains any
               Contaminant including, without limitation, any asbestos, PCBs or
               petroleum products or byproducts in any form, the presence,
               location or condition of which (a) is reasonably likely to
               require remediation or other corrective action pursuant to any
               Environmental Law in any material respect, or (b) otherwise would
               pose any significant health or safety risk unless remedial
               measures were taken.

          (t)  LIBERTY and/or the Subsidiaries (i) have surveyed the facilities
               where LIBERTY and the Subsidiaries conduct their business
               including, without limitation, ATMs (collectively, the "LIBERTY
               Facilities") for compliance with ADA; (ii) have developed action
               plans to remove architectural barriers including communication
               barriers that are structural in nature from existing LIBERTY
               Facilities (collectively, the "LIBERTY Barriers") when such

                                      -34-

 


<PAGE>   36



               removal is "readily achievable," as that term is defined in ADA;
               (iii) have finalized plans for ATMs in conformance with the Joint
               Final Rule of the ATBCB and the Department of Transportation,
               effective August 16, 1993; (iv) have developed or will develop
               schedules for LIBERTY Barrier removal from LIBERTY Facilities in
               such action plans so that LIBERTY Barrier removal was complete on
               January 26, 1992 or will be completed as soon as practicable
               thereafter; and (v) have removed all LIBERTY Barriers in LIBERTY
               Facilities or will cause all LIBERTY Barriers to be removed in
               accordance with such action plans. All "alterations" (as such
               term is defined in ADA) to LIBERTY Facilities undertaken after
               January 26, 1992 comply with ADA and the ADAAG. Effective January
               26, 1992, all plans and designs for new construction to be
               utilized by LIBERTY and the Subsidiaries comply with ADA and
               ADAAG. To the best of the knowledge of LIBERTY and its executive
               officers after due inquiry, no investigations, proceedings, or
               complaints, formal or informal, are pending or threatened against
               LIBERTY and/or the Subsidiaries in connection with LIBERTY
               Facilities under ADA, ADAAG, or any other state or federal law
               concerning accessibility for individuals with disabilities.

          (u)  The statements made in the LIBERTY Disclosure Letter and any
               attachments thereto shall be deemed to constitute representations
               and warranties of LIBERTY under this Merger Agreement to the same
               extent as if herein set forth in full. Anything disclosed in the
               LIBERTY Disclosure Letter or the attachments thereto shall be
               considered to have been disclosed for purposes of all
               representations, warranties and covenants under this Merger
               Agreement.

     16.  ACTION BY LIBERTY PENDING EFFECTIVE TIME. LIBERTY agrees that from the
          date of this Merger Agreement until the earlier of the Effective Time
          or the time that this Merger Agreement is terminated, except as stated
          in LIBERTY's Disclosure Letter or except with prior written permission
          of BANC ONE, which, in any case covered by Section 16(d) hereof, shall
          not be unreasonably withheld:

          (a)  Beginning with the fourth quarter of 1996 and for each succeeding
               calendar quarter thereafter prior to the calendar quarter in
               which the Effective Time shall occur, LIBERTY

               (i)  will not declare or pay any dividends or make any
                    distributions on shares of LIBERTY Common, except cash
                    dividends of (A) $ 0.25 per share for the fourth

                                      -35-

 


<PAGE>   37



                    quarter of 1996 and (B) of not more than $0.30 per share for
                    each quarter subsequent to the fourth quarter of 1996; and

               (ii) except as hereinbelow provided, will not declare or pay any
                    dividends or make any distributions in any amount on LIBERTY
                    Common in the quarter in which the Effective Time shall
                    occur and in which the shareholders of LIBERTY Common are
                    entitled to receive regular quarterly dividends on the
                    shares of BANC ONE Common into which the shares of LIBERTY
                    Common have been converted. It is the intent of this part
                    (ii) to provide that the holders of LIBERTY Common will
                    receive either the payment of cash dividends on their shares
                    of LIBERTY Common or the payment of cash dividends as the
                    holders of shares of BANC ONE Common received in exchange
                    for the shares of LIBERTY Common for the calendar quarter
                    during which the Effective Time shall occur, but will not
                    receive and will not become entitled to receive for the same
                    calendar quarter both the payment of a cash dividend as
                    shareholders of LIBERTY and the payment of a cash dividend
                    as the holders of the shares of BANC ONE Common received in
                    exchange for the shares of LIBERTY Common. In the event that
                    LIBERTY does not declare and pay cash dividends on its
                    LIBERTY Common in a particular calendar quarter because of
                    LIBERTY's reasonable expectation that the Effective Time
                    would occur in said calendar quarter and the Effective Time
                    does not in fact occur effective in said calendar quarter,
                    then, as a result thereof, LIBERTY shall be entitled to
                    declare and pay a cash dividend (within the limitations of
                    this Section 16) on said shares of LIBERTY Common for said
                    calendar quarter as soon as reasonably practicable.

          The declaration of any dividends within the limitations of this
          paragraph shall remain within the discretion of the Board of Directors
          of LIBERTY.

          (b)  LIBERTY will not issue, sell or grant any warrant, option,
               phantom stock option, stock appreciation right or commitment of
               any kind for or related to or acquire for value any shares of its
               capital stock or otherwise effect any change in connection with
               its equity capitalization except as related to (i) the
               outstanding stock options which have been granted related to the
               purchase of not more than 615,705 shares of LIBERTY Common
               pursuant to the LIBERTY Option Plans, (ii) the outstanding stock
               option which has been granted related to the purchase of not more
               than 289,694 shares of LIBERTY Common

                                      -36-

 


<PAGE>   38



               pursuant to the Henke Option, and (iii) the option to be granted
               to BANC ONE pursuant to Section 21 of this Merger Agreement.

          (c)  Except as otherwise set forth in or contemplated by this Merger
               Agreement, LIBERTY will carry on its businesses in substantially
               the same manner as heretofore, keep in full force and effect
               insurance comparable in amount and scope of coverage to that now
               maintained by it and use its reasonable best efforts to maintain
               and preserve its business organization intact.

          (d)  Neither LIBERTY nor any Subsidiary will (i) enter into any new
               line of business or incur or agree to incur any obligation or
               liability except liabilities and obligations (including corporate
               debt issuances) incurred in the ordinary course of business,
               except as may be directed by any regulatory agency; (ii) except
               as may be directed by any regulatory agency, change its or its
               Subsidiaries' lending, investment, liability management and other
               material banking policies in any material respect; (iii) except
               in the ordinary course of business and consistent with prior
               practice, grant any general or uniform increase in the rates of
               pay of employees; (iv) establish any new employee benefit plan or
               amend any existing plan (except as required by law) so as to
               increase by any significant amount the benefits payable
               thereunder; (v) incur or commit to any capital expenditures other
               than in the ordinary course of business (which will in no event
               include the establishment of new branches or any other facilities
               or any capital expenditures in excess of $75,000 for any
               individual project for any purpose); or (vi) merge into,
               consolidate with or permit any other corporation to be merged or
               consolidated with it or any Subsidiary or acquire outside of the
               ordinary course of business part of or all the assets or stock of
               any other corporation or person.

          (e)  LIBERTY will not change its or its Subsidiaries' methods of
               accounting in effect at December 31, 1995, except as required by
               changes in generally accepted accounting principles as concurred
               in by Arthur Andersen LLP or change any of its methods of
               reporting income and deductions for Federal income tax purposes
               from those employed in the preparation of LIBERTY's Federal
               income tax returns for the taxable years ending December 31, 1995
               and 1994, except as required by changes in law or regulation.

          (f)  To the extent permitted by law, LIBERTY will afford BANC ONE, its
               officers and other authorized representatives, such access to all
               books, records, bank examination reports,

                                      -37-

 


<PAGE>   39



               tax returns, leases, contracts and documents of LIBERTY and its
               Subsidiaries and will furnish to BANC ONE such information with
               respect to the assets and business of LIBERTY and its
               Subsidiaries as BANC ONE may from time to time reasonably request
               in connection with this Merger Agreement and the transactions
               contemplated hereby.

          (g)  LIBERTY will promptly advise BANC ONE in writing of all material
               corporate actions taken by the directors and shareholders of
               LIBERTY, furnish BANC ONE with copies of all monthly and other
               interim financial statements of LIBERTY as they become available,
               and keep BANC ONE fully informed concerning all trends and
               developments which in the opinion of LIBERTY may have a LIBERTY
               Material Adverse Effect.

          (h)  LIBERTY, its Subsidiaries and their respective officers,
               directors and employees will not contract for or acquire, at the
               expense of LIBERTY or any of its Subsidiaries, a policy or
               policies providing for insurance coverage for directors, officers
               and/or employees of LIBERTY and/or its Subsidiaries for any
               period subsequent to the Effective Time for events occurring
               before or after the Effective Time; provided, however, that
               LIBERTY may renew, extend or replace existing policies in the
               ordinary course consistent with past practices for periods of not
               greater than one year.

     17.  ACTION BY BANC ONE PENDING EFFECTIVE TIME. BANC ONE agrees that from
          the date of this Agreement until the Effective Time, except with prior
          written permission of LIBERTY:

          (a)  BANC ONE will not adopt or implement any amendment to its
               Articles of Incorporation or any plan of consolidation, merger or
               reorganization which would affect in any manner the terms and
               provisions of the shares of BANC ONE Common or the rights of the
               holders of such shares or reclassify any of the BANC ONE Common.

          (b)  Except as otherwise set forth in or contemplated by this Merger
               Agreement, BANC ONE will carry on its businesses in substantially
               the same manner as heretofore, keep in full force and effect
               insurance comparable in amount and scope of coverage to that now
               maintained by it and use its reasonable best efforts to maintain
               and preserve its business organization intact.

          (c)  BANC ONE will not change its methods of accounting in effect at
               December 31, 1995, except as required by changes in generally
               accepted accounting principles as concurred

                                      -38-

 


<PAGE>   40



               in with Coopers & Lybrand, its independent auditors, or change
               any of its methods of reporting income and deductions for Federal
               income tax purposes from those employed in the preparation of the
               Federal income tax returns of BANC ONE for the taxable years
               ending December 31, 1995 and 1994, except as required by changes
               in law or regulation.

          (d)  To the extent permitted by law, BANC ONE will afford LIBERTY, its
               officers and other authorized representatives, such access to all
               books, records, bank examination reports, tax returns, leases,
               contracts and documents of BANC ONE and its subsidiaries and will
               furnish to LIBERTY such information with respect to the assets,
               earnings and business of BANC ONE and its subsidiaries as LIBERTY
               may from time to time reasonably request in connection with this
               Merger Agreement and the transactions contemplated hereby.

          (e)  BANC ONE will not, and will cause its subsidiaries not to, make
               or agree to make any acquisition, or take any other action, that
               adversely affects its ability or the ability of BANC ONE OKLAHOMA
               to consummate the transactions contemplated by this Merger
               Agreement.

     18.  CONDITIONS TO OBLIGATIONS OF BANC ONE AND BANC ONE OKLAHOMA. The
          obligations of BANC ONE and BANC ONE OKLAHOMA to effect the Merger are
          subject, unless waived by BANC ONE, to the satisfaction of the
          following conditions on or prior to the Effective Time:

          (a)  There shall not have been any change in the consolidated
               financial condition, aggregate net assets, shareholders' equity,
               business or operating results of LIBERTY and its Subsidiaries,
               taken as a whole, from September 30, 1996 to the Effective Time
               that has had a LIBERTY Material Adverse Effect.

          (b)  LIBERTY shall not have paid cash dividends from October 1, 1996
               to the Effective Time except as permitted under this Merger
               Agreement.

          (c)  All representations by LIBERTY contained in this Merger Agreement
               shall be true at, or as of, the Effective Time as though such
               representations were made at and as of said date, except for (i)
               changes contemplated by the Merger Agreement, (ii)
               representations as of a specified time other than the Effective
               Time, which shall be true at such specified time

                                      -39-

 


<PAGE>   41



               (provided, however, that the representation of LIBERTY contained
               in Section 15(e) shall be true in all material respects as
               applied to the Balance Sheet of LIBERTY included in the most
               recently available quarterly or annual report to LIBERTY
               shareholders and/or LIBERTY's most recently filed report to the
               SEC on Form 10-Q or Form 10-K prior to the Effective Time and the
               allowance for possible loan losses included therein, as though
               each reference to "September 30, 1996" in such Section were a
               reference to the last day of the calendar quarter of such report
               or form), and (iii) inaccuracies or breaches which do not,
               individually or in the aggregate, have a LIBERTY Material Adverse
               Effect.

          (d)  BANC ONE shall have received the opinion of legal counsel for
               LIBERTY, dated as of the Effective Time, substantially to the
               effect set forth in EXHIBIT C hereto, together with a copy of the
               Certificate of Incorporation, as amended, of LIBERTY certified by
               the Secretary of State of Oklahoma and Certificates of Good
               Standing dated as of a date not more than 20 days prior to the
               Effective Time from the Secretary of State of the State of
               Oklahoma or the OCC, as appropriate, for each Bank.

          (e)  LIBERTY shall have fulfilled and satisfied, in all material
               respects, all agreements and conditions required by this Merger
               Agreement to be fulfilled and satisfied by it at or prior to the
               Effective Time.

          (f)  As of the close of the most recent calendar quarter (or if the
               Effective Time shall occur within 20 days following the close of
               a calendar quarter, then as of the next preceding calendar
               quarter) cumulative earnings per share on LIBERTY Common reported
               by LIBERTY for calendar quarters beginning with the fourth
               quarter of 1996 through the quarter in which the Effective Time
               shall occur shall be greater than or equal to the amount
               calculated by multiplying (x) $0.55 by (y) the number of full
               calendar quarters which have passed since September 30, 1996 and
               for which earnings of LIBERTY Common have been reported as of
               such date, times (z) 0.9. After consultation with BANC ONE,
               LIBERTY may effect the sales of certain of LIBERTY's securities,
               which sales may result in losses. As used in this Section
               "reported" means reported on LIBERTY's financial statements
               prepared in accordance with generally accepted accounting
               principles applied on a basis consistent with LIBERTY's financial
               statements for the years ended December 31, 1995 and 1994, as
               included in LIBERTY's reports to the SEC on Forms 10-K or
               LIBERTY's annual reports to shareholders subject to any
               subsequent adjustments required to be reported whether or not
               such adjustments have, as yet, been reported with

                                      -40-

 


<PAGE>   42



               the following adjustments, if any, net of related income tax
               savings and costs, which were reflected in net income for the
               relevant period(s) added back into or deducted from net income
               for the applicable period: (i) outside legal, investment banking,
               accounting and other fees and expenses associated with or
               resulting from the Merger, including severance and compensation
               costs disclosed in the LIBERTY Disclosure Letter; (ii) gains or
               losses on sales of assets outside of the ordinary course of
               business; (iii) losses on sales of securities sold after
               consultation with BANC ONE pursuant to this Section 18(g); (iv)
               any other expenses upon which BANC ONE and LIBERTY shall mutually
               agree; and (v) the effect of any changes in accounting principles
               required to be adopted by LIBERTY by any regulatory authority or
               under generally accepted accounting principles.

          (g)  The total number of shares of LIBERTY Common issued and
               outstanding (not including treasury shares held by LIBERTY),
               including the total number of shares of LIBERTY Common related to
               outstanding and unexercised options related to LIBERTY Common,
               including options under the LIBERTY Option Plan and the Henke
               Option, but not including the option to BANC ONE provided for in
               Section 21 of this Merger Agreement, shall not be more than
               10,350,474 shares.

          (h)  LIBERTY shall have furnished BANC ONE certificates, signed on its
               behalf by its Chairman or President and its Secretary or an
               Assistant Secretary and dated as of the Effective Time,
               certifying as to the form of and adoption of resolutions of its
               Board and shareholders approving the Merger Agreement and the
               Merger, respectively, and to the effect that the conditions
               described in Paragraphs (a), (b), (c), (f), and (g), of this
               Section 18 have been fully satisfied.

     19.  CONDITIONS TO OBLIGATIONS OF LIBERTY. The obligations of LIBERTY to
          effect the Merger are subject, unless waived by LIBERTY, to the
          satisfaction on or prior to the Effective Time of the following
          conditions:

          (a)  There shall not have been any change in the consolidated
               financial condition, aggregate net assets, shareholders' equity,
               business, or operating results of BANC ONE and its subsidiaries,
               taken as a whole, from September 30, 1996 to the Effective Time
               that has had a BANC ONE Material Adverse Effect.

                                      -41-

 


<PAGE>   43



          (b)  All representations by BANC ONE and BANC ONE OKLAHOMA contained
               in this Merger Agreement shall be true at, or as of, the
               Effective Time as though such representations were made at and as
               of said date, except for changes (i) contemplated by this Merger
               Agreement, (ii) representations as of a specified time other than
               the Effective Time, which shall be true in all material respects
               at such specified time (provided, however, that the
               representation of BANC ONE contained in Section 13(e) shall be
               true in all material respects as applied to the Balance Sheet of
               BANC ONE included in the most recently available quarterly or
               annual report to BANC ONE's shareholders and/or BANC ONE's most
               recently filed report to the SEC on Form 10-Q or Form 10-K prior
               to the Effective Time and the reserve for possible loan and lease
               losses included therein, as though each reference to "September
               30, 1996" in such Section were a reference to the last day of the
               calendar quarter of such report or form), and (iii) inaccuracies
               or breaches which do not, individually or in the aggregate, have
               a BANC ONE Material Adverse Effect.

          (c)  LIBERTY shall have received the opinion of counsel for BANC ONE
               and BANC ONE OKLAHOMA, (i) on and dated the date on which the
               registration statement described in Section 10(d) of this Merger
               Agreement shall have become effective as described in Section
               20(b) of this Merger Agreement substantially to the effect of
               paragraphs numbered 5, 6 and 7 of EXHIBIT D hereto and (ii) on
               and dated as of the Effective Time substantially to the effect
               set forth in EXHIBIT D hereto, together with a copy of the
               Articles of Incorporation of BANC ONE certified by the Secretary
               of State of the State of Ohio and a copy of the Certificate of
               Incorporation of BANC ONE OKLAHOMA certified by the Secretary of
               State of the State of Oklahoma and, as LIBERTY shall reasonably
               require, Certificates of Good Standing of BANC ONE and BANC ONE
               OKLAHOMA dated as of a date not more than 20 days prior to the
               day of the Effective Time from the Secretary of State of the
               State of Ohio or Secretary of State of the State of Oklahoma, as
               applicable, and copies of the Regulations of BANC ONE and By-laws
               of BANC ONE OKLAHOMA.

          (d)  BANC ONE and BANC ONE OKLAHOMA shall have fulfilled and
               satisfied, in all material respects, all agreements and
               conditions required by this Merger Agreement to be fulfilled and
               satisfied by it at or prior to the Effective Time.

          (e)  As of the close of the most recent calendar quarter (or if the
               Effective Time shall occur within 20 days following the close of
               a calendar quarter, then as of the close of the next

                                      -42-

 


<PAGE>   44



               preceding calendar quarter) cumulative earnings per share of BANC
               ONE Common reported by BANC ONE for calendar quarters beginning
               with the fourth quarter of 1996 through the quarter in which the
               Effective Time shall occur shall be greater than or equal to the
               amount calculated by multiplying (x) $0.81 by (y) the number of
               full calendar quarters which have passed since September 30, 1996
               and for which earnings per share of BANC ONE Common have been
               reported as of such date, times (z) 0.9. As used in this Section,
               "reported" means reported on BANC ONE's financial statements
               prepared in accordance with generally accepted accounting
               principles applied on a basis consistent with BANC ONE's
               financial statements for the years ended December 31, 1995 and
               1994, as included in BANC ONE's reports to the SEC on Forms 10-K
               or BANC ONE's annual reports to shareholders subject to any
               subsequent adjustments required to be reported to the SEC whether
               or not such adjustments have, as yet, been reported with the
               effect of any changes in accounting principles required to be
               adopted by BANC ONE by any regulatory authority or under
               generally accepted accounting principles, if any, net of related
               income tax savings and costs, which were reflected in net income
               for the relevant period(s) added back into or deducted from net
               income for the relevant period(s).

          (f)  BANC ONE and BANC ONE OKLAHOMA shall have each furnished LIBERTY
               a certificate, signed on its behalf by its Chairman, President,
               Senior Executive Vice President or an Executive Vice President
               and by its Secretary or Assistant Secretary and dated as of the
               Effective Time certifying as to the form of and adoption of the
               resolution of its Board approving the Merger Agreement and the
               Merger, and to the effect that the conditions described in
               Paragraphs (a), (b), (d), and (e) of this Section 19 have been
               fully satisfied as to it.

          (g)  The shares of BANC ONE Common to be issued to the holders of
               LIBERTY Common shall be listed on the NYSE.

          (h)  LIBERTY shall have received an opinion from Morgan Stanley & Co.
               Incorporated, dated as of a date not more than five days prior
               to the date of the Proxy Statement, to the effect that, in the
               opinion of such firm, the financial consideration to be received
               by the holders of LIBERTY Common as a result of the Merger is
               fair to such holders and such opinion shall not have been
               withdrawn prior to the Effective Time.

                                      -43-

 


<PAGE>   45



     20.  CONDITIONS TO OBLIGATIONS OF ALL PARTIES. In addition to the
          provisions of Sections 18 and 19 hereof, the obligations of BANC ONE
          and LIBERTY to effect the Merger shall be subject to the satisfaction
          of the following conditions on or prior to the Effective Time:

          (a)  The parties hereto shall have received all necessary approvals of
               governmental agencies and authorities of the transactions
               contemplated by this Merger Agreement and each of such approvals
               shall remain in full force and effect at the Effective Time. BANC
               ONE shall notify LIBERTY promptly upon receipt of all necessary
               governmental approvals. At the Effective Time, (i) no party
               hereto shall be subject to any order, decree or injunction of a
               court or governmental agency of competent jurisdiction which
               enjoins or prohibits the consummation of the Merger; and (ii) no
               statute, rule, regulation, order, injunction or decree shall have
               been enacted, entered, promulgated or enforced by any
               governmental authority which prohibits or makes illegal
               consummation of the Merger.

          (b)  The registration statement required to be filed by BANC ONE
               pursuant to Section 10(d) of this Merger Agreement shall have
               become effective by an order of the SEC, the shares of BANC ONE
               Common to be exchanged in the Merger shall have been qualified or
               exempted under all applicable state securities laws, and there
               shall have been no stop order issued and in effect or threatened
               by the SEC that suspends or would suspend the effectiveness of
               the registration statement, and no proceeding by the SEC shall
               have been commenced, pending or overtly threatened for such
               purpose and the BANC ONE Common to be issued in the Merger will
               be authorized for trading on the NYSE.

          (c)  This Merger Agreement shall have been duly approved and adopted
               by the requisite affirmative vote of the shareholders of LIBERTY
               and BANC ONE OKLAHOMA.

          (d)  Wachtell, Lipton, Rosen & Katz shall have issued its written
               opinion, dated as of the date of the Effective Time, satisfactory
               to LIBERTY and BANC ONE, respectively, substantially to the
               effect set forth in clauses (a) through (e) of Section 12 of this
               Merger Agreement and there shall exist as of, at or immediately
               prior to the Effective Time, no facts or circumstances which
               would render such opinion inapplicable in any respect to the
               transactions to be consummated hereunder.

          (e)  The aggregate of (i) the fractional share interests of BANC ONE
               Common to be paid in cash pursuant to Section 7(c), and (ii) the
               shares of BANC ONE Common to which

                                      -44-

 


<PAGE>   46



               holders of LIBERTY Common would have been entitled as of the
               Effective Time but who, as of the Effective Time, have taken
               steps to perfect their rights as dissenting shareholders pursuant
               to the provisions of applicable law, shall not be more than 10%
               of the maximum aggregate number of shares of BANC ONE Common
               which could be issued as a result of the Merger.

          (f)  The registration statement filed by BANC ONE with the SEC
               registering the shares of BANC ONE Common reserved for issuance
               pursuant to the exercise of options on BANC ONE Common pursuant
               to the LIBERTY Option Plan shall have become effective pursuant
               to rules and regulations of the SEC and shall have been qualified
               or exempted under all applicable state securities laws, and there
               shall have been no stop order issued and in effect or threatened
               by the SEC that suspends or would suspend the effectiveness of
               such registration and no proceeding by the SEC shall have been
               commenced, pending or overtly threatened for such purpose.

     21.  OPTION TO PURCHASE

          By not later than December 31, 1996, LIBERTY shall grant to BANC ONE
          an option to purchase shares of LIBERTY Common in substantially the
          form of EXHIBIT E and shall execute and deliver to BANC ONE an option
          agreement in substantially the form of said EXHIBIT E.

     22.  INDEMNIFICATION.

          (a)  In the event of any threatened or actual claim, action, suit,
               proceeding or investigation, whether formal or informal and
               whether civil, administrative or criminal, including, without
               limitation, any such claim, action, suit, proceeding or
               investigation pursuant to which any person who is now, or has
               been at any time prior to the date hereof, or who becomes prior
               to the Effective Time, a director, officer, employee, fiduciary
               or agent of LIBERTY or any of its Subsidiaries (the "Indemnified
               Parties") is, or is threatened to be, made a party or a witness,
               based in whole or in part on, or arising in whole or in part out
               of, or pertaining to, this Merger Agreement or any of the
               transactions contemplated hereby (a "Merger Related Event"),
               whether in any case asserted or arising before or after the
               Effective Time, the parties hereto agree to cooperate and use
               their reasonable best efforts to defend against and respond to
               such claim, action, suit, proceedings or investigation.

                                      -45-

 


<PAGE>   47



               With respect to any Merger Related Event, and conditioned upon
               the Merger becoming effective, BANC ONE shall indemnify, defend
               and hold harmless, as and to the fullest extent permitted by
               applicable law, each Indemnified Party against any and all
               losses, claims, damages, liabilities, costs, expenses (including
               attorneys' fees and expenses), judgments and fines, and amounts
               paid in settlement, in connection with any such threatened or
               actual claim, action, suit, proceedings or investigation;
               provided, however, that BANC ONE shall not be liable for any
               settlement effected without its prior written consent (which
               consent shall not be unreasonably withheld). In the event of any
               such threatened or actual claim, action, suit, proceedings or
               investigation (whether asserted or arising before or after the
               Effective Time), (i) BANC ONE shall pay expenses (including
               attorney's fees and expenses) in advance of the final disposition
               of any claim, suit, proceedings or investigation to each
               Indemnified Party to the fullest extent permitted by applicable
               law, and (ii) BANC ONE shall use its reasonable best efforts to
               vigorously defend any such matter; provided, however, that BANC
               ONE's obligations as herein set forth shall not apply to any
               losses, claims, damages, liabilities, costs, expenses, judgments,
               fines and amounts paid in settlement by any Indemnified Party
               involving the fraud, bad faith and/or reckless disregard of such
               Indemnified Party or related to any threatened or actual claim,
               action, suit, proceedings or investigation brought by BANC ONE
               against any Indemnified Party. Any Indemnified Party wishing to
               claim indemnification and defense under this Section 22(a) shall,
               upon the earlier to occur of (A) receiving actual notice of any
               such claim, action, suit, proceeding or investigation, (B)
               otherwise learning of such claim, action, suit, proceeding or
               investigation or (C) receiving other information which would give
               a reasonably prudent person reason to believe that such a claim,
               action, suit, proceeding or investigation had or might be
               brought, notify BANC ONE thereof as soon as reasonably
               practicable thereafter. BANC ONE's obligations pursuant to this
               Section 22(a) are conditioned upon (A) BANC ONE being given the
               right to control and direct the investigation, defense and/or
               settlement of each such matter; provided, however, that BANC ONE
               will endeavor to consult with the Indemnified Party and to take
               the views of such Indemnified Party into consideration in
               effecting any settlement, (B) the Indemnified Party having
               reasonably cooperated with BANC ONE in connection therewith, and
               (C) the BANC ONE being given prompt written notice of any such
               claim, action, suit, proceeding or investigation; provided,
               however, that the failure to so notify shall not affect the
               obligations of BANC ONE unless BANC ONE is prejudiced thereby.

                                      -46-

 


<PAGE>   48



          (b)  To the extent not prohibited by applicable law, BANC ONE shall
               insure that all rights to indemnification and defense and all
               limitations of liability existing in favor of the Indemnified
               Parties as provided in LIBERTY's Certificate of Incorporation and
               By-laws or similar governing documents of any of its Subsidiaries
               or indemnification agreements, as in effect as of December 1,
               1996, or as otherwise provided for or allowed under applicable
               law as in effect as of the date hereof or as such law is amended
               at a time prior to the Effective Time, with respect to claims or
               liabilities arising from facts or events existing or occurring
               prior to the Effective Time, shall survive the Merger and shall
               continue in full force and effect, without any amendment thereto,
               for a period of six (6) years from the Effective Time; provided,
               however, that all rights to indemnification in respect of any
               claim asserted or made within such period shall continue until
               the final disposition of such claim.

          (c)  In connection with any obligation of BANC ONE to indemnify any
               Indemnified Party pursuant to Section 22(a) or (b), any
               determination required to be made with respect to whether an
               Indemnified Party's conduct complies with the standards set forth
               in Section 22(a), above, or under Oklahoma law and the
               Certificate of Incorporation or By-Laws of LIBERTY shall be made
               by independent counsel (which shall not be counsel that provides
               material services to BANC ONE) selected by BANC ONE and
               reasonably acceptable to the Indemnified Party; and provided,
               further, that, in making such determination, BANC ONE shall have
               the burden to demonstrate that the Indemnified Party's conduct
               failed to comply with such standard.

          (d)  From and after the Effective Time, persons who, immediately prior
               to the Effective Time, served as the directors, officers and
               employees of LIBERTY and its Subsidiaries, who, following the
               Effective Time, continue as directors, officers and/or employees
               of the Surviving Corporation or one of its subsidiaries, shall
               have indemnification and defense rights having prospective
               application only, except, however, for the indemnification and
               defense rights set forth in paragraphs (a), (b) and (c) of this
               Section 22. These prospective indemnification and defense rights
               shall consist of (i) such rights to which directors, officers and
               employees are entitled under the provisions of the Certificate of
               Incorporation, By-laws or similar governing documents of the
               Surviving Corporation and its subsidiaries, as applicable, as in
               effect from time to time after the Effective Time, as applicable,
               and provisions of applicable law as in effect from time to time
               after the Effective Time and (ii) those indemnification and
               defense rights set forth in agreements,

                                      -47-

 


<PAGE>   49



               if any, between BANC ONE and the directors and executive officers
               of the Surviving Corporation and its Subsidiaries. Such
               agreements, if any, which shall be executed as soon as
               practicable following the Effective Time, shall provide certain
               indemnification and defense rights that are comparable to those
               provided to directors, officers and employees of BANC ONE and its
               subsidiaries generally, but which rights may be greater or lesser
               than the indemnification and defense rights available in clause
               (i) above.

          (e)  The obligations of BANC ONE provided under paragraphs (a), (b)
               and (c) of this Section 22 are intended to be the joint and
               several obligations of BANC ONE and the Surviving Corporation and
               to benefit, and be enforceable against BANC ONE and the Surviving
               Corporation directly by the Indemnified Parties, and shall be
               binding on all respective successors and permitted assigns of
               BANC ONE and the Surviving Corporation.

          (f)  In the event BANC ONE or the Surviving Corporation or any of its
               successors or assigns (i) consolidates with or merges into any
               other person and shall not be the continuing or surviving
               corporation or entity of such consolidation or merger, or (ii)
               transfers or conveys all or substantially all of its properties
               and assets to any person, then, and in each such case, proper
               provision shall be made so that the successors and assigns of
               BANC ONE or the Surviving Corporation, as the case may be, assume
               the obligations set forth in this Section 22.

          (g)  The provisions of this Section 22 are intended for the benefit
               of, and shall be enforceable by, each Indemnifed Party and his or
               her heirs and representatives. BANC ONE shall pay all reasonable
               costs, including attorneys' fees, that may be incurred by any
               Indemnified Party in successfully enforcing the indemnity and
               other obligations provided for in this Section 22. The rights of
               each Indemniftied Party hereunder shall be in addition to any
               other rights such Indemnified Party may have under applicable
               law.

     23.  NON-SURVIVAL OF REPRESENTATIONS AND WARRANTIES. The respective
          representations and warranties of LIBERTY, BANC ONE and BANC ONE
          OKLAHOMA contained in this Merger Agreement shall not survive the
          Effective Time.

     24.  GOVERNING LAW. This Merger Agreement shall be construed and
          interpreted according to the applicable laws of the State of Oklahoma.

                                      -48-

 


<PAGE>   50



     25.  ASSIGNMENT. This Merger Agreement and all of the provisions hereof
          shall be binding upon and inure to the benefit of the parties hereto
          and their respective successors and permitted assigns, but neither
          this Merger Agreement nor any of the rights, interests, or obligations
          hereunder shall be assigned by any of the parties hereto without the
          prior written consent of the other parties.

     26.  SATISFACTION OF CONDITIONS; TERMINATION.

          (a)  BANC ONE and BANC ONE OKLAHOMA agree to use their reasonable best
               efforts to obtain satisfaction of the conditions of this Merger
               Agreement insofar as they relate to BANC ONE and BANC ONE
               OKLAHOMA, and LIBERTY agrees to use its reasonable best efforts,
               subject to the fiduciary duties of the Board of Directors of
               LIBERTY, to obtain the satisfaction of the conditions of this
               Merger Agreement insofar as they relate to LIBERTY, in each case
               as soon as possible.

          (b)  This Merger Agreement may be terminated at any time prior to the
               Effective Time, whether before or after approval of the Merger by
               the shareholders of BANC ONE OKLAHOMA or by LIBERTY's
               shareholders, upon the occurrence of any of the following by
               written notice from BANC ONE to LIBERTY (authorized by the Board
               of Directors or executive officers of BANC ONE), or by written
               notice from LIBERTY to BANC ONE (authorized by the Board of
               Directors of LIBERTY), as the case may be:

               (i)  If any material condition to the obligations of BANC ONE
                    and/or BANC ONE OKLAHOMA set forth in Section 18 or 20 is
                    not substantially satisfied at the time or times
                    contemplated thereby and such condition is not waived by
                    BANC ONE or if any material condition to the obligations of
                    LIBERTY as set forth in Section 19 or 20 is not
                    substantially satisfied at the time or times contemplated
                    thereby and such condition is not waived by LIBERTY. Each
                    party's right to terminate under this Section 26 (b)(i)
                    shall relate only to conditions to that party's obligations;

               (ii) In the event of a material breach by the other of any
                    representation, warranty, condition or agreement contained
                    in this Merger Agreement that is not cured within 30 days of
                    the time that written notice of such breach is received by
                    such other party from the party giving notice; or

                                      -49-

 


<PAGE>   51



              (iii) If the Merger shall not have been consummated on or before
                    December 29, 1997.

          (c)  In the event that BANC ONE's pre-acquisition investigation and
               review of LIBERTY as described in Section 10(m) of this Merger
               Agreement discloses matters which BANC ONE in good faith believes
               to be either (i) inconsistent in any material respect with any of
               the representations and warranties of LIBERTY contained in this
               Merger Agreement or (ii), in the reasonable judgment of the Board
               of Directors of BANC ONE, to be either (x) of such significance
               as to materially and adversely affect the financial condition or
               the results of operations of LIBERTY and its Subsidiaries on a
               consolidated basis or (y) deviate materially and adversely from
               LIBERTY's financial statements for the nine months ended
               September 30, 1996, BANC ONE may elect to terminate this Merger
               Agreement by giving written notice of termination to LIBERTY
               within seven days of the conclusion of such pre-acquisition
               investigation.

          (d)  In the event that LIBERTY's pre-acquisition investigation and
               review of BANC ONE as described in Section 10(n) of this Merger
               Agreement discloses matters which LIBERTY in good faith believes
               to be either (i) inconsistent in any material respect with any of
               the representations and warranties of BANC ONE contained in this
               Merger Agreement, or (ii) in the reasonable judgment of the Board
               of Directors of LIBERTY, to be either (x) of such significance as
               to materially and adversely affect the financial condition or the
               results of operations of BANC ONE and its subsidiaries on a
               consolidated basis or (y) deviate materially and adversely from
               BANC ONE's financial statements for the nine months ended
               September 30, 1996, LIBERTY may elect to terminate this Merger
               Agreement by giving written notice of termination to BANC ONE
               within seven days of the conclusion of such pre-acquisition
               investigation.

          (e)  By LIBERTY if its Board of Directors so determines by a vote of a
               majority of the members of its entire Board, at any time during
               the ten-day period commencing two days after the Determination
               Date, if either (x) both of the following conditions are
               satisfied:

               (i)  the Average Closing price shall be less than $35.90; and

               (ii) (A) the number obtained by dividing the Average Closing
                    Price by the Starting Price (such number being referred to
                    herein as the "BANC ONE Ratio") shall be less than (B) the
                    number obtained by dividing the Average Index Price by the

                                      -50-

 


<PAGE>   52



               Index Price of the Starting Date and subtracting 0.20 from the
               quotient in this clause (x) (ii)(B) (such number being referred
               to herein as the "Index Ratio"); or

          (y) the Average Closing Price shall be less than $33.656; subject,
          however, to the following four sentences. If LIBERTY elects to
          exercise its termination right pursuant to the immediately preceding
          sentence, it shall give prompt written notice to BANC ONE which notice
          shall specify which of the clauses (x) or (y) is is applicable (or if
          both would be applicable, which clause is being invoked); provided
          that such notice or election to terminate may be withdrawn at any time
          within the aforementioned ten-day period. During the five-day period
          commencing with its receipt of such notice, BANC ONE shall have the
          option in the case of a failure to satisfy the condition in clause
          (x), of adjusting the Exchange Rate to equal the lesser of (i) a
          number equal to a quotient (rounded to the nearest one-thousandth),
          the numerator of which is the product of $35.90 and the Exchange Rate
          (as then in effect) and the denominator of which is the Average
          Closing Price, and (ii) a number equal to a quotient (rounded to the
          nearest one-thousandth), the numerator of which is the Index Ratio
          multiplied by the Exchange Rate (as then in effect) and the
          denominator of which is the ACQUIRED COMPANY Ratio. During such
          five-day period, BANC ONE shall have the option, in the case of a
          failure to satisfy the condition in clause (y), to elect to increase
          the Exchange Rate to equal a number equal to a quotient (rounded to
          the nearest one-thousandth), the numerator of which is the product of
          $33.656 and the Exchange Rate (as then in effect) and the denominator
          of which is the Average Closing Price. If BANC ONE makes an election
          contemplated by either of the two preceding sentences within such
          five-day period, it shall give prompt written notice to LIBERTY of
          such election and the revised Exchange Rate, whereupon no termination
          shall have occurred pursuant to this Section 26(e) and this Agreement
          shall remain in effect in accordance with its terms (except as the
          Exchange Rate shall have been so modified), and any references in this
          Agreement to "Exchange Rate" shall thereafter be deemed to refer to
          the Exchange Ratio as adjusted pursuant to this Section 26(e).

          For purposes of this Section 26(e), the following terms shall have the
          meanings indicated:

          "Average Closing Price" means the average of the daily last sale
          prices of BANC ONE Common stock as reported on the NYSE Composite
          Transactions reporting system (as reported in The Wall Street Journal
          or, if not reported therein, in another mutually agreed

                                      -51-

 


<PAGE>   53



          upon authoritative source) for the ten consecutive full trading days
          in which such shares are traded on the NYSE ending at the close of
          trading on the Determination Date.

          "Average Index Price" means the average of the Index Prices for the
          ten consecutive full NYSE trading days ending at the close of trading
          on the Determination Date.

          "Determination Date" means the date on which the approval of the Board
          required for consummation of the Merger shall be received.

          "Index Group" means the group of each of the 14 bank holding companies
          listed below, the common stock of all of which shall be publicly
          traded and as to which there shall not have been since the Starting
          Date and before the Determination Date, any public announcement of a
          proposal for such company to be acquired or for such company to
          acquire another company or companies in transactions with a value
          exceeding 25% of the acquiror's market capitalization. In the event
          that the common stock of any such company ceases to be publicly traded
          or such an announcement is made, such company will be removed from the
          Index Group, and the weights (which have been determined based on the
          number of outstanding shares of common stock) redistributed
          proportionately for purposes of determining the Index Price.

          The 14 bank holding companies and the weights attributed to them are
          as follows:
<TABLE>
<CAPTION>
          BANK HOLDING COMPANY                   WEIGHTING
          --------------------                   ---------
<S>                                                <C>  
          Citicorp                                 17.2%
          Chase Manhattan Corp.                    13.9
          BankAmerica Corporation                  12.6
          Wells Fargo & Company                     8.9
          First Union Corporation                   7.0
          First Chicago/NBD Corp.                   6.0
          Norwest Corporation                       5.8
          Fleet Financial Group, Inc.               4.7
          Bank of New York Company, Inc.            4.7
          PNC Bank Corp.                            4.5
          KeyCorp                                   4.1
          SunTrust Banks, Inc.                      3.9
</TABLE>


                                      -52-

 


<PAGE>   54

<TABLE>
<S>                                                <C>
          Wachovia Corporation                   3.4
          Mellon Bank Corporation                3.3

                    Total                      100.0%
</TABLE>


          "Index Price" on a given date means the weighted average (weighted in
          accordance with the factors listed above) of the closing prices on
          such date of the companies composing the Index Group.

          "Starting Date" means the last full day on which the NYSE was open for
          trading prior to the execution of this Agreement.

          "Starting Price" shall mean the last sale price per share of BANC ONE
          Common Stock on the Starting Date, as reported by the NYSE Composite
          Transactions reporting system (as reported in The Wall Street Journal
          or, if not reported therein, in another mutually agreed upon
          authoritative source.)

          If any company belonging to the Index Group or BANC ONE declares or
          effects a stock dividend, reclassification, recapitalization,
          split-up, combination, exchange of shares or similar transaction
          between the Starting Date and the Determination Date, the prices for
          the common stock of such company or BANC ONE shall be appropriately
          adjusted for the purposes of applying this Section 26(e).

     (f)  This Merger Agreement may be terminated and abandoned (whether before
          or after approval of the Merger by the shareholders of BANC ONE
          OKLAHOMA or by LIBERTY's shareholders) by mutual written consent of
          LIBERTY, BANC ONE OKLAHOMA and BANC ONE authorized by the respective
          Boards of Directors of LIBERTY and BANC ONE OKLAHOMA and by the Board
          of Directors or executive officers of BANC ONE.

     (g)  In the event of termination of this Merger Agreement (i) caused
          otherwise than by a willful breach of this Merger Agreement by any of
          the parties hereto or (ii) pursuant to Section 26(c), (d) or (e), (A)
          this Merger Agreement shall cease and terminate, the acquisition of
          LIBERTY as provided herein shall not be consummated, and none of BANC
          ONE, BANC ONE OKLAHOMA nor LIBERTY shall have any liability to any
          other party under this Merger Agreement of any nature whatever, except
          for BANC ONE's

                                      -53-

 


<PAGE>   55



          obligations related to the printing of the proxy solicitation
          materials, including any liability for damages, and (B) BANC ONE, BANC
          ONE OKLAHOMA and LIBERTY each shall pay its own fees and expenses
          incident to the negotiation, preparation and execution of this Merger
          Agreement, the respective shareholders' meetings and actions of the
          parties and all other acts incidental to, contemplated by or in
          pursuance of the transactions contemplated by this Merger Agreement,
          including fees and expenses of their respective counsel, accountants
          and other experts and advisors. The duties of the parties with respect
          to confidential information as set forth in Section 10(f) shall
          survive any termination of this Merger Agreement.

     (h)  If termination of this Merger Agreement shall be judicially determined
          to have been caused by willful breach of this Merger Agreement, then,
          in addition to other remedies at law or equity for breach of this
          Merger Agreement, the party so found to have willfully breached this
          Merger Agreement shall indemnify the other parties for their
          respective costs, fees and expenses of their counsel, accountants and
          other experts and advisors as well as fees and expenses incident to
          negotiation, preparation and execution of this Merger Agreement and
          related documentation and their shareholders' meetings and consents.

27.  WAIVERS; AMENDMENTS. Any of the provisions of this Merger Agreement may be
     waived in writing at any time by the party which is, or the shareholders of
     which are, entitled to the benefit thereof, provided, however, such waiver,
     if material to LIBERTY or its shareholders, may be made only following due
     authorization by the Board of Directors of LIBERTY. This Merger Agreement
     may be amended or modified in whole or in part by an agreement in writing
     executed in the same manner (but not necessarily by the same persons) as
     this Merger Agreement and which makes reference to this Merger Agreement;
     provided, however, such amendment or modification may be made only
     following due authorization by the respective Boards of Directors of
     LIBERTY and BANC ONE OKLAHOMA and by the Board of Directors or the
     executive officers of BANC ONE; provided, further, however, that after a
     favorable vote by the shareholders of LIBERTY any such action shall be
     taken by LIBERTY only if, in the opinion of its Board of Directors, such
     amendment or modification will not have any material adverse effect on the
     benefits intended under this Merger Agreement for the shareholders of
     LIBERTY, and will not require resolicitation of any proxies from such
     shareholders.


                                      -54-

 


<PAGE>   56



28.  ENTIRE AGREEMENT. Subject to the exceptions noted in the next following
     sentence, this Merger Agreement supersedes any other agreement, whether
     written or oral, that may have been made or entered into by LIBERTY, BANC
     ONE OKLAHOMA and/or BANC ONE or by any officer or officers of such parties
     relating to the acquisition of the business or the capital stock of LIBERTY
     and/or its Subsidiaries by BANC ONE or BANC ONE OKLAHOMA. Except for the
     BANC ONE Disclosure Letter and any attachments thereto, the LIBERTY
     Disclosure Letter and any attachments thereto, the Confidentiality
     Agreement, and the Benefits Agreement, this Merger Agreement and the
     exhibits hereto constitute the entire agreement by the parties, and there
     are no agreements or commitments except as set forth herein and therein.

29.  CAPTIONS; COUNTERPARTS. The captions in this Merger Agreement are for
     convenience only and shall not be considered a part of or affect the
     construction or interpretation of any provision of this Merger Agreement.
     This Merger Agreement may be executed in several counterparts, each of
     which shall constitute one and the same instrument.

30.  NOTICES. All notices and other communications hereunder may be made by
     mail, hand-delivery or by courier service. If notices and other
     communications are made by nationally recognized overnight courier service
     for overnight delivery, such notice shall be deemed to have been given one
     business day after being forwarded to such a nationally recognized
     overnight courier service for overnight delivery. All notices and other
     communications hereunder given to any party shall be communicated to the
     remaining party to this Merger Agreement by mail or by hand-delivery in the
     same manner as herein provided.

(a)   If to BANC ONE, to:

                     BANC ONE CORPORATION
                     Attention of:  Chief Executive Officer
                     100 East Broad Street
                     Columbus, Ohio   43271

      With a copy to:

                     BANC ONE CORPORATION
                     Attention of: Steven A. Bennett
                                   General Counsel
                     100 East Broad Street
                     Columbus, Ohio   43271

                                      -55-

 


<PAGE>   57



              (b)    If to LIBERTY, to:
                     Liberty Bancorp, Inc.
                     Attention of: Charles E. Nelson
                                   Chairman and Chief Executive Officer
                     100 North Broadway
                     Oklahoma City, Oklahoma    73102

              With a copies to:
                     Wachtell, Lipton, Rosen & Katz
                     Attention of:   Samuel Herlihy
                     51 West 52nd Street
                     New York, New York   10019

              and to:
                     Crowe & Dunlevy
                     Attention of: Michael M. Stewart
                     1800 Mid-America Tower
                     20 North Broadway
                     Oklahoma City, Oklahoma   73102

      (c)     If to BANC ONE OKLAHOMA, to:
                     Banc One Oklahoma Corporation
                     Attention of:  William P. Boardman
                     100 East Broad Street
                     Columbus, Ohio   43271

                                      -56-

 


<PAGE>   58


IN WITNESS WHEREOF, this Merger Agreement has been executed the day and year
first above written.

                                    BANC ONE CORPORATION

ATTEST:

                                    By:
- ------------------                     ------------------------------------
                                          William P. Boardman
                                    Its:  Senior Executive Vice President


                                    Liberty Bancorp, Inc.

ATTEST:

                                    By:
- ------------------                     ------------------------------------
                                          Charles E. Nelson
                                    Its:  Chairman and Chief Executive Officer

                                    Banc One Oklahoma Corporation

ATTEST:

                                    By:
- ------------------                     ------------------------------------
                                          William P. Boardman
                                    Its:  Vice President

                                      -57-

 





<PAGE>   59
                                    EXHIBIT A
                                  Subsidiaries

                  DIRECT SUBSIDIARIES OF LIBERTY BANCORP, INC.

<TABLE>
<CAPTION>
                                                Jurisdiction of
Name                                            Incorporation          Business
- ----                                            -------------          --------

<S>                                             <C>                    <C>
Liberty Bank and Trust Company
         of Oklahoma City, N.A.                 National Bank          Bank

Liberty Bank and Trust
         Company of Tulsa, N.A.                 National Bank          Bank

Liberty Real Estate Company                     Oklahoma               Ownership of Bank Premises

Mid-America Credit Life
         Assurance Company                      Oklahoma               Credit Insurance Underwriting

Mid-America Insurance Agency,
         Inc.                                   Oklahoma               Credit Insurance Agent

Liberty Trust Company                           Oklahoma               State Chartered Trust Company

Liberty Financial Corporation                   Delaware               Inactive

Liberty Trust Company of Texas                  Texas                  Proposed Texas Trust Company(In
                                                                            Organization)

      SUBSIDIARIES OF LIBERTY BANK AND TRUST COMPANY OF OKLAHOMA CITY, N.A.

                                                Jurisdiction of
Name                                            Incorporation          Business
- ----                                            -------------          --------

Liberty Mortgage Company                        Delaware               Mortgage Origination and
                                                                           Servicing
Liberty Property Management
         Company                                Oklahoma               Property Management for Bank
                                                                           Premises
Lexco Petroleum, Inc.                           Oklahoma               Holding Title as Nominee for
                                                                           DPC Assets

                    SUBSIDIARIES OF LIBERTY MORTGAGE COMPANY

                                                Jurisdiction of
Name                                            Incorporation          Business
- ----                                            -------------          --------

Liberty Mortgage Company
         of New Mexico                          New Mexico             Mortgage Origination and
                                                                           Servicing
</TABLE>


                                       58




<PAGE>   1



                                   EXHIBIT 2




<PAGE>   2

                                OPTION AGREEMENT

Option Agreement, dated as of December 28, 1996 (this "Agreement"), by and
between Liberty Bancorp, Inc., a corporation organized under the laws of the
State of Oklahoma ("LIBERTY") and BANC ONE CORPORATION, a corporation organized
under the laws of the State of Ohio ("BANC ONE").

                             W I T N E S S E T H :
                             ---------------------

WHEREAS, LIBERTY and Banc One Oklahoma Corporation , an Ohio corporation and a
wholly owned subsidiary of BANC ONE ("BANC ONE OKLAHOMA"), together with BANC
ONE, have executed a Merger Agreement dated as of December 28, 1996 (the "Merger
Agreement") providing for the merger of LIBERTY with and into BANC ONE OKLAHOMA,
pursuant to which BANC ONE will acquire LIBERTY;

WHEREAS, Section 21 of the Merger Agreement provides that LIBERTY will execute
and deliver an option agreement, substantially in the form of this Agreement, to
BANC ONE prior to the close of business December 31, 1996;

NOW THEREFORE, in consideration of said Merger Agreement and their mutual
promises and obligations, the parties hereto adopt and make this Agreement as
follows:

1.   LIBERTY hereby grants to BANC ONE an irrevocable option (the "Option") to
     purchase in accordance with the terms of this Option Agreement at the
     closing trade price of a share of the Common Stock, of LIBERTY ("LIBERTY
     Common"), on December 30, 1996, as reported on the National Association of
     Securities Dealers Automated Quotation System National Market System, per
     share (the "Per Share Price") in cash up to 1,879,570 authorized but
     unissued shares of LIBERTY Common (the "Optioned Shares"). The Option shall
     expire (such event being referred to herein as the "Option Termination
     Event") if not exercised as permitted under this Agreement prior to the
     earlier of (i) at the time the merger of LIBERTY into BANC ONE OKLAHOMA
     becomes effective as set forth and defined in Section 4 of the Merger
     Agreement (the "Effective Time"), (ii) BANC ONE or LIBERTY receiving
     written notice from the Board of Governors of the Federal Reserve System
     (the "Board") or its staff to the effect that the exercise of the Option
     pursuant to the terms of this Agreement is not consistent with Section 3 of
     the Bank Holding Company Act of 1956, as amended, (iii) termination of the
     Merger Agreement by BANC ONE in accordance with the provisions of Section
     26 of the Merger Agreement if such termination occurs prior to the
     occurrence of an Initial Triggering Event (as hereinafter defined), (iv)
     the first business day after the five hundred and forty-eighth calendar day
     following termination of the Merger Agreement by BANC ONE in accordance
     with the provisions of Section 26 thereof, if such termination follows the
     occurrence of an Initial Triggering Event, provided that the Option shall
     in all events expire not later than 24 months after such Initial Triggering
     Event, (v) termination of the Merger Agreement by LIBERTY in accordance
     with the provisions of Section 26 thereof, or (vi) termination of the
     Merger Agreement by mutual consent of BANC ONE and


<PAGE>   3



     LIBERTY. If, in the case of (iv), the Option is otherwise exercisable but
     cannot be exercised on such day solely because of any injunction, order or
     similar restraint issued by a court of competent jurisdiction, the Option
     shall expire on the twentieth business day after such injunction, order or
     restraint shall have been dissolved or when such injunction, order or
     restraint shall have become permanent and no longer subject to appeal, as
     the case may be.

2.   Provided that (i) no preliminary or permanent injunction or other order
     issued by any Federal or state court of competent jurisdiction in the
     United States prohibiting the exercise of the Option or the delivery of the
     Optioned Shares shall be in effect and (ii) any such exercise shall
     otherwise be subject to compliance with applicable law and (iii) BANC ONE
     is not then in material breach of the Merger Agreement, BANC ONE may
     exercise the Option in whole or in part at any time or from time to time
     after the occurrence of both an Initial Triggering Event and a Purchase
     Event (as defined in Section 4 of this Agreement) if, but only if, both the
     Initial Triggering Event and the Purchase Event shall have occurred prior
     to the occurrence of an Option Termination Event. In the event that BANC
     ONE wishes to exercise the Option, BANC ONE shall give written notice of
     such exercise (the date of such notice being herein called the "Notice
     Date") within 30 days following such Purchase Event to LIBERTY specifying
     the number of Optioned Shares it will purchase pursuant to such exercise
     and a place and date for the closing of such purchase which date shall be
     within 45 days following the receipt of the last of any required regulatory
     approvals, but in any event, within 365 days of the Purchase Event, subject
     to reasonable extensions in order for BANC ONE to obtain required
     regulatory approvals.

3.   At any closing of the exercise of the Option, (i) BANC ONE will make
     payment to LIBERTY of the aggregate price for the Optioned Shares in
     immediately available funds, in an amount equal to the product of the Per
     Share Price multiplied by the number of Optioned Shares being purchased at
     such closing and (ii) LIBERTY will deliver to BANC ONE a duly executed
     certificate or certificates representing the number of Optioned Shares so
     purchased, registered in the name of BANC ONE or its nominee in the
     denominations designated by BANC ONE in its notice of exercise. Unless
     counsel for LIBERTY and BANC ONE agree that such shares are not "restricted
     shares" under federal and/or state securities laws, certificates for such
     shares shall bear a legend to that effect.

4.   For purposes of this Agreement, an "Initial Triggering Event" shall have
     occurred at such time as one of the following events shall have occurred
     and BANC ONE shall have determined in good faith (and shall have notified
     LIBERTY in writing of such determination) that there is a reasonable
     likelihood that, as a result of the occurrence of any of the following
     events, consummation of the Merger pursuant to the term of this Merger
     Agreement is jeopardized: (i) any person as defined in secs. 3(a)(9) or
     13(d)(3) of the Securities Exchange Act of 1934, as amended (the "1934
     Act") (other than BANC ONE or any BANC ONE subsidiary or affiliate) shall
     have commenced a bona fide offer to purchase shares of LIBERTY Common such
     that, upon consummation of said offer, such person would own or control 10%
     or more of the outstanding shares of LIBERTY Common, or shall have entered
     into an agreement with LIBERTY, or shall have filed an application or
     notice with the Board or any other federal or state regulatory agency for
     clearance or approval, to (A) merge or consolidate or enter into any


<PAGE>   4



     similar transaction, with LIBERTY, (B) purchase, lease or otherwise acquire
     all or substantially all of the assets of LIBERTY or (C) purchase or
     otherwise acquire (including by way of merger, consolidation, share
     exchange or any similar transaction) securities representing 10% or more of
     the voting power of LIBERTY; (ii) any person (other than BANC ONE, BANC ONE
     OKLAHOMA, any BANC ONE subsidiary or affiliate, any subsidiary of LIBERTY
     ("LIBERTY Subsidiary") in a fiduciary capacity) or any current shareholder
     of LIBERTY which has beneficial ownership of 10% or more of the outstanding
     shares of LIBERTY Common (a "Current 10% Shareholder") shall have acquired
     beneficial ownership or the right to acquire beneficial ownership of 10% or
     more of the outstanding shares of LIBERTY Common (the term "beneficial
     ownership" for purposes of this Agreement having the meaning assigned
     thereto in Section 13(d) of the 1934 Act) or, in the case of a Current 10%
     Shareholder, said Current 10% Shareholder shall have acquired beneficial
     ownership or the right to acquire beneficial ownership of 10% or more of
     the outstanding shares of LIBERTY Common in addition to those beneficially
     owned as of the date hereof; (iii) any person (other than BANC ONE or any
     BANC ONE subsidiary or affiliate) shall have made a bona fide proposal to
     LIBERTY after the date of the Merger Agreement by public announcement or
     written communication that is the subject of public disclosure or
     regulatory report or filing to (A) acquire LIBERTY by merger,
     consolidation, purchase of all or substantially all of its assets or any
     other similar transaction, or (B) make an offer described in clause (i),
     above; (iv) any person shall have solicited proxies in a proxy solicitation
     subject to Regulation 14A under the 1934 Act in opposition to approval of
     the Merger Agreement by LIBERTY's shareholders; or (v) or LIBERTY shall
     have willfully breached any provision of the Merger Agreement, which breach
     would entitle BANC ONE to terminate the Merger Agreement and such breach
     shall not have been cured pursuant to the terms of the Merger Agreement.
     For purposes of this Agreement, a "Purchase Event" shall have occurred at
     such time as (i) any person (other than BANC ONE or any BANC ONE subsidiary
     or affiliate) acquires beneficial ownership of 50% or more of the
     then-outstanding shares of LIBERTY Common, or (ii) LIBERTY enters into an
     agreement with another person (other than BANC ONE or any BANC ONE
     subsidiary) pursuant to which such person is entitled to acquire 50% or
     more of the then-outstanding shares of LIBERTY Common.

5.   If between the date of the Merger Agreement and the Effective Time, the
     shares of LIBERTY Common shall be changed into a different number of shares
     by reason of any reclassification, recapitalization, split-up, combination
     or exchange of shares, or if a stock dividend thereon shall be declared
     with a record date within said period (an "Event"), the number of Optioned
     Shares and the Per Share Price shall be adjusted appropriately so as to
     restore BANC ONE to its rights hereunder, including, without limitation,
     its right to purchase that number of additional shares (the "Additional
     Optioned Shares") representing ownership of the voting power of the capital
     stock of LIBERTY (in addition to shares of LIBERTY Common acquired other
     than pursuant to any exercise of the Option) so that the ratio of (x) the
     sum of (A) the Optioned Shares (including such Additional Optioned Shares,
     if any, calculated as a result of one or more earlier Events) plus (B) the
     Additional Optioned Shares, over the total number of shares of LIBERTY
     Common issued and outstanding after each such Event, shall be equal to the
     ratio of (y) the sum of (C) 1,879,570 plus (D) such Additional Optioned
     Shares, if any, calculated as a result of one or more earlier Events, over
     the total number of shares of


<PAGE>   5



     LIBERTY Common issued and outstanding immediately prior to each such Event,
     at an adjusted per share purchase price equal to the Per Share Price
     multiplied by a fraction, the numerator of which shall be equal to the
     number of shares of LIBERTY Common purchasable prior to the adjustment and
     the denominator of which shall be equal to the number of shares of LIBERTY
     Common purchasable after the adjustment; provided, however, that nothing in
     this Option shall be construed as permitting LIBERTY to take any action or
     enter into any transaction prohibited by this Agreement.

6.   LIBERTY shall, if requested by BANC ONE, as expeditiously as possible file
     a registration statement on a form of general use under the Securities Act
     of 1933, as amended, if necessary in order to permit the sale or other
     disposition of the shares of LIBERTY Common that have been acquired upon
     exercise of the Option in accordance with the intended method of sale or
     other disposition requested by BANC ONE. BANC ONE shall provide all
     information reasonably requested by LIBERTY for inclusion in any
     registration statement to be filed hereunder. LIBERTY will use its best
     efforts to cause such registration statement first to become effective and
     then to remain effective for such period not in excess of two hundred and
     seventy calendar days from the day such registration statement first
     becomes effective as may be reasonably necessary to effect such sales or
     other dispositions. The registration effected under this Section 6 shall be
     at LIBERTY's expense except for all filing and agency fees and commissions
     and underwriting discounts and commissions attributable to the sale of such
     securities and fees and disbursements of BANC ONE's counsel related
     thereto, which amounts shall be borne by BANC ONE. In no event shall
     LIBERTY be required to effect more than one registration hereunder. The
     filing of any registration statement hereunder may be delayed for such
     period of time as may reasonably be required if LIBERTY determines that any
     such filing or the offering of any such shares of LIBERTY Common would (i)
     impede, delay or otherwise interfere with any financing, offer or sale of
     LIBERTY Common or any other securities of LIBERTY, or (ii) require
     disclosure of material information which, if disclosed at that time, would
     be materially harmful to the interests of LIBERTY and its shareholders. If
     requested by BANC ONE in connection with any such registration, LIBERTY
     will become a party to any underwriting agreement relating to the sale of
     such shares, but only to the extent of obligating itself in respect of
     representations, warranties, indemnities and other agreements customarily
     required of issuers. Neither this Option Agreement nor the Option are
     assignable by BANC ONE. BANC ONE and LIBERTY agree to use their respective
     reasonable efforts to cause, and to cause any underwriters of any sale or
     other disposition to cause, any sale or other disposition of the Optioned
     Shares and any Additional Optioned Shares to be effected on a widely
     distributed basis.

7.   Notices. All notices and other communications hereunder may be made by
     mail, hand-delivery or by courier service. If notices and other
     communications are made by nationally recognized overnight courier service
     for overnight delivery, such notice shall be deemed to have been given one
     business day after being forwarded to such a nationally recognized
     overnight courier service for overnight delivery. All notices and other
     communications hereunder given to any party shall be communicated to the
     remaining party to this Agreement by mail or by hand-delivery in the same
     manner as herein provided.


<PAGE>   6



      (a)   If to BANC ONE, to:

            BANC ONE CORPORATION
            Attention of:           Chief Executive Officer
            100 East Broad Street
            Columbus, Ohio 43271

            With a copy to:
            BANC ONE CORPORATION
            Attention of:           Steven A. Bennett
                                    General Counsel
            100 East Broad Street
            Columbus, Ohio 43271

      (b)   If to LIBERTY, to:
            Liberty Bancorp, Inc.
            Attention of:           Charles E. Nelson
                                    Chairman and Chief Executive Officer
            100 North Broadway
            Oklahoma City, Oklahoma 73102

            With a copies to:

            Wachtell, Lipton, Rosen & Katz
            Attention of:           Edward D. Herlihy
            51 West 52nd Street
            New York, New York, 10019

            and

            Crowe & Dunlevy
            Attention of:           Michael M. Stewart
            1800 Mid-America Tower
            20 North Broadway
            Oklahoma City, Oklahoma 73102



<PAGE>   7







IN WITNESS WHEREOF, this Agreement has been executed the day and year first
above written.

                                    BANC ONE CORPORATION

ATTEST:

                                    By:
- -----------------------                --------------------------------------
                                          William P. Boardman
                                          its Senior Executive Vice President

                                    Liberty Bancorp, Inc.

ATTEST:

                                    By:
- -----------------------                --------------------------------------
                                          Charles E. Nelson
                                          its Chairman of the Board and
                                            Chief Executive Officer



© 2022 IncJournal is not affiliated with or endorsed by the U.S. Securities and Exchange Commission