EXHIBIT 10.10

                              Cullen/Frost Bankers
                             A Family of Texas Banks


                                  June 28, 1996

Mr. Robert S. McClane
Cullen/Frost Bankers, Inc.
100 West Houston Street
San Antonio, Texas  78205

Dear Bob:

         Cullen/Frost Bankers, Inc., a Texas corporation (the "Company"), hereby
acknowledges the significant contributions you have made, and continue to make,
to both the Company and the community during your years with the Company. In
addition, the Company is excited that you have been elected to serve as the
Chairman of The Greater San Antonio Chamber of Commerce for this year and the
constructive community relations benefits that will flow to the Company as a
result of you serving in such position. Due to the recent reorganization within
the bank and your election to retire and enter into the Retirement Plan (as
hereinafter defined) effective June 1, 1999, and the Company's desire that you
continue to serve as President of the Company until the earlier of the 1997
meeting of the Company's shareholders or June 30, 1997, and, in view of your
contributions to and knowledge of the Company and its operations, the Company's
desire to be able to call upon you for consulting services and special projects
assistance after your term as President has ended and until you enter into the
Retirement Plan, this letter agreement, which has been approved by the
Compensation and Benefits Committee of the Board of Directors of the Company,
sets forth the terms of your employment until your retirement on June 1, 1999:

         1. Employment, Consulting Services and Duties. Subject to the terms and
conditions of this Agreement, the Company agrees to employ you as its President,
and you accept such employment with the Company, from the date hereof until the
earlier of the 1997 meeting of the Company's shareholders or June 30, 1997 (the
"Initial Term"). During this Initial Term it is understood that you will be
serving as Chairman or Immediate Past-Chairman of The Greater San Antonio
Chamber of Commerce and will perform such other duties for the Company as may be
assigned and agreed upon between you and the Senior Chairman of the Board. For
the period commencing with the expiration of the Initial Term through May 31,
1999 ("Consulting Term"), the Company and you mutually agree that you will be
employed by the Company: (a) as a consultant on community and customer relations
matters and issues reporting directly to the Senior Chairman of the Board; and
(b) as a consultant to work on special projects as may be assigned and agreed
upon between you and the Senior Chairman or Chairman of the Board. It is further
understood that during calendar year 1997 you will serve, as the immediate
past-Chairman of The Greater San Antonio Chamber of Commerce, on the Chamber's
Executive Committee thereby continuing to provide constructive community
relations benefits to the Company. The Initial Term and the Consulting Term are
collectively referred to herein as the "Term." During the Consulting Term, and
subject to the provisions of Section 5 hereof, you will be able to pursue other
business ventures, activities and investments that are not in conflict with your
obligations and duties, as defined herein, as an employee of the Company. During
the Consulting Term and until such time as you reach age 70, you will be
considered annually by the Board as a candidate for re-election to the Board of
the Company and The Frost National Bank; provided,





however, that it is understood that whether or not you are nominated and/or
re-elected is solely and exclusively within the discretion of the Board. If you
are nominated and elected to serve as a member of either of such boards of
directors, you shall not be compensated in your capacity as a director so long
as you are receiving the monthly base salary set forth in Section 2.1 hereof.

         2. Compensation and Benefits.

            2.1 Monthly Base Salary. For all services rendered to the company
during the Term of this Agreement, the Company shall pay you a salary of $25,000
per month, payable in accordance with the usual payroll practice of the Company,
less all required deductions.

            2.2 Bonus. As additional compensation for services rendered under
this Agreement, Employee shall receive a bonus of $90,000 to be paid not later
than March 31,1997.

            2.3 Benefits. You shall, in addition to the compensation provided
for herein, be entitled to the following additional benefits during the Term of
this Agreement:

            (a) Medical, Health, Life and Disability Benefits. You shall be
entitled to receive all medical, health, life and disability benefits that may,
from time to time, be provided by the Company to senior management of the
Company as a group.

            (b) Other Benefits. In addition to the normal benefits incident to
employment with the Company, you shall also be entitled to receive the following
additional benefits: (i) a car allowance of $6,000 per annum; (ii) payment of
dues for membership to the Argyle and San Antonio Country Club; and (iii)
payment for security at your residence.

            2.4 Stock Options.

            (a) Release of Unvested Options. As of the effective date of this
Agreement, you hold the following nonqualified stock options granted by the
Company subject to the terms of the applicable plan and option award agreements
(collectively, the "Unvested Options"): (i) 6,000 options granted on October 20,
1994, which are scheduled to vest on October 20, 1999; and (ii) 6,800 options
granted on September 28, 1995, 3,400 of which are scheduled to vest on September
28, 1999 and 3,400 of which are scheduled to vest on September 28, 2000. You
have acknowledged that, in the absence of a change of control of the Company,
such Unvested Options shall, by their terms, expire unvested as of your
retirement on June 1, 1999.

            In exchange for good and valuable consideration provided under this
Agreement, you have agreed and do hereby forfeit and release the Unvested
Options immediately upon the execution of this Agreement.

            (b) Grant. In consideration for past, and future services to the
Company, you will receive a nonqualified stock option, subject to the terms of
the applicable plan and option award agreement as approved by the Company's
Compensation and Benefits Committee on June 26, 1996, of 15,000 options which
will be scheduled to vest on May 31, 1999, with a ten (10) year exercise period
from the date of grant.

            2.5 Reimbursement of Expenses. During the Initial Term, the Company
shall reimburse you for all expenses reasonably incurred by you in conjunction
with the rendering of services at the



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Company's request, including such entertainment, travel and other related
incidental expenses reasonably incurred by you in conjunction with your duties
as Chairman or Immediate Past-chairman of the Greater San Antonio Chamber of
Commerce or in support of customer relations activities for reimbursement, with
appropriate receipts and itemization, in accordance with the prevailing practice
and policy of the Company. During the Consulting Term, the prior authorization
or approval by the Senior Chairman or Chairman of the Company shall also be
required for expense reimbursement.

            2.6 Office. While employed as President during the Initial Term, you
will continue to occupy your current office and receive secretarial and other
office support appropriate to your position. Thereafter, until the earlier of
such time as you no longer request or regularly utilize such office or you reach
age 70, you will be provided with a private office and appropriate office and
secretarial support.

         3. Termination.

            3.1 Termination For Cause. Your employment under this Agreement may
be terminated by the Company for "Cause" (hereinafter defined) upon written
notice thereof given by the Company to you. In the event of termination pursuant
to this Section 3.1, the Company shall pay you your monthly base salary (subject
to standard deductions) earned pro rata to the date of such termination and the
Company shall have no further obligations to you hereunder. Termination by the
Company of your employment for Cause shall mean termination upon (a) the willful
and continued failure by you to perform substantially your duties with the
Company (other than any such failure resulting from your incapacity due to
physical or mental illness) after a demand for substantial performance is
delivered to you by the Senior Chairman or the Chairman of the Board which
specifically identifies the manner in which such executive believes that you
have not substantially performed your duties, or (b) the willful engaging by you
in illegal conduct which is materially and demonstrably injurious to the
Company. For purposes of this Section 3.1, no act, or failure to act, on your
part shall be considered willful unless done, or omitted to be done, by you in
bad faith and without reasonable belief that your action or omission was in, or
not opposed to, the best interest of the Company. Any act, or failure to act,
based upon authority given pursuant to a resolution duly adopted by the Board or
based on advice of counsel for the Company shall be conclusively presumed to be
done, or omitted to be done, by you in good faith and in the best interest of
the Company. Notwithstanding the foregoing, you shall not be deemed to have been
terminated for Cause unless and until there shall have been delivered to you a
copy of a resolution duly adopted by the affirmative vote of not less than three
quarters of the entire membership of the Board at a meeting of the Board called
and held for the purpose (after reasonable notice to you and an opportunity for
you, together with you counsel, to be heard before the Board), finding that in
the good faith opinion of the Board you were guilty of the conduct set forth
above in (a) or (b) of this Section 3.1 and specifying the particulars thereof
in detail.

            3.2 Termination Upon Death. This Agreement shall terminate upon your
death.

            3.3 Termination Upon Disability. In the event you become unable to
perform the essential functions of your duties hereunder, with or without
reasonable accommodation, on account of illness, disability or other reason
whatsoever for a period of more than 180 consecutive day, the Company may, upon
notice to you, terminate this Agreement. In the event of termination pursuant to
this Section 3.3, you shall be entitled to payment of a monthly amount, that
when added to the monthly amount to be received under all your short-term and
long-term disability benefits, is equal to your



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monthly base salary. You shall receive such amount for the then remaining
portion of the Term of employment pursuant to this Agreement.

            3.4 Survival of Provisions. The covenants and provisions of Section
5 and Section 8 hereof shall survive any termination of this Agreement
regardless of how such termination may be brought about.

         4. Retirement Plan. Notwithstanding the foregoing, upon the occurrence
of the earlier of (i) the termination of this Agreement on May 31, 1999 (i.e.,
the last day of the Term), or (ii) the termination of this Agreement for any
reason other than for death or Cause (as defined in Section 3.1), you shall
enter into retirement pursuant to the Retirement Plan for Employees of
Cullen/Frost Bankers, Inc. and its Affiliates (or any successor or substitute
defined benefit pension plan or plans of the Company) (the "Retirement Plan").

         5. Confidential Information. You agree that during and subsequent to
your Term of employment with the Company, you will not at any time communicate
or disclose to any unauthorized person without the written consent of the Senior
Chairman or Chairman of the Company, any proprietary process or information of
the Company, or any subsidiary or related entity, or other confidential
information concerning their business, financial affairs, products, suppliers or
customers which, if disclosed, would have a material adverse effect upon the
business or operation of the Company and its subsidiaries, taken as a whole; it
being understood, however, that the obligations of this Section 5 shall not
apply to the extent that the aforesaid matters (a) are disclosed in
circumstances where you are legally required to do so or (b) become generally
known to and available for use by the public otherwise than by your wrongful act
or omission. The intent of this Section 5 is not to create a non-complete
agreement but to protect the rights of the Company as provided above.

         6. Successors: Binding Agreement.

            6.1 Upon your written request, the Company will seek to have any
Successor (as hereinafter defined), by agreement in form and substance
satisfactory to you, assent to the fulfillment by the Company of its obligations
under this Agreement. Failure of such person or entity to furnish such assent by
the later of (a) three business days prior to the time such person or entity
becomes a Successor or (b) two business days after such person or entity
receives a written request to so assent shall constitute a termination by the
Company without cause and shall entitle you to payment within 30 days of such
termination of a lump sum equal to (without discounting to present value) your
monthly base salary under Section 2.1 hereof for the then remaining portion of
the Term of employment pursuant to this Agreement and immediately to the
benefits provided in Section 4. In addition, the retirement benefits you shall
receive under Section 4 hereof shall be those benefits you would have been
entitled to had you remained the employ of the Company until the expiration of
the term of this Agreement. For purposes of this Agreement, Successor shall mean
any person or entity that succeeds to, or has the practical ability to control
(either immediately or with the passage of time), the Company's business
directly, by merger or consolidation, or indirectly, by purchase of the
Company's securities entitled to vote in the election of directors, all or
substantially all of its assets, or otherwise.

            6.2 For purposes of this Agreement, the Company shall include any
corporation or other entity which is the surviving or continuing entity in
respect of any merger, consolidation or form of business combination in which
the Company ceases to exist.



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            6.3 This Agreement shall inure to the benefit of and be enforceable
by you and your personal or legal representatives and successors in interest
under this Agreement.

         7. Taxes. The Company may withhold from any amounts payable under this
Agreement all federal, state, city or other taxes as shall be required pursuant
to any law or governmental regulation or ruling.

         8. Arbitration. Any claim, dispute or controversy of any nature
whatsoever, including but not limited to tort claims or contract disputes,
between the parties to this Agreement or their respective heirs, executors,
administrators, legal representatives, successors and assigns, as applicable,
arising out of or relating to your employment or the termination of your
employment with the Company and/or the terms and conditions of this Agreement,
including the implementation, applicability and interpretation thereof, shall be
resolves as follows: upon the written request of one party served upon the
other, any such claim, dispute or controversy shall be submitted to and settled
by arbitration in accordance with the provisions of the Federal Arbitration Act,
9 U.S.C. Sections 1-15, as amended; provided, however, that with respect to the
provisions of Section 5 of this Agreement dealing with confidential information,
the Company reserves the right to petition a court directly for injunctive or
other relief. If arbitration is requested, each of the parties to this Agreement
shall appoint one person as an arbitrator to hear and determine any such
disputes, and if they should be unable to agree, then the two arbitrators shall
choose a third arbitrator from a panel made up of experienced arbitrators
selected pursuant to the procedures of the American Arbitration Association (the
"AAA") and, once chosen, the third arbitrator's decision shall be final, binding
and conclusive upon the parties to this Agreement. Each party shall be
responsible for the fees and expenses of its arbitrator and the fees and
expenses of the third arbitrator shall be shared equally by the parties. The
terms of the commercial arbitration rules of AAA shall apply except to the
extent they conflict with the provisions of this paragraph. It is further agreed
that any of the parties hereto may petition the United States District Court for
the Western District of Texas, San Antonio Division, for a judgement to be
entered upon any award entered through such arbitration proceedings.

         9. Release. You release, dismiss, acquit and discharge the Company and
its affiliates, and their divisions, officers, directors, agents, employees,
consultants, independent contractors, attorneys, advisers, successors and
assigns, jointly and severally, from any and all claims, known or unknown, which
you, your heirs, successors and assigns have or may have against any of such
parties, whether denominated claims, demands, causes of action, obligations,
damages or liabilities arising from any and all bases, however denominated,
including but not limited to claims of discrimination under the Age
Discrimination in Employment Act; Title VII of the Civil Rights Act of 1964, as
amended; the Civil Rights Act of 1991; 42 U.S.C. Section 1981, Section 1985;
Americans With Disabilities Act; Equal Pay Act; anti-discrimination laws; libel;
slander; defamation; Fair Labor Standards Act; Employee Retirement Income
Security Act of 1974; Texas Commission on Human Rights Act; art. 5221k, Tex.
Rev. Civ. Stat. Ann. (Vernon Supp. 1985) or any other U.S. federal, state or
local law including, statutory, common law or regulations. This release relates
to claims arising from and during your relationship with the Company and its
affiliates or as a result of the termination of such relationship, specifically
including but not limited to your retirement to be effective June 1, 1999. This
release is for any relief, no matter how denominated, including but not limited
to wages, back pay, front pay compensatory damages or punitive damages. You
further agree that you will not file or permit to be filed on your behalf any
such claim. This release is not intended to apply to the obligations of the
Company set forth in this Agreement or to future claims based upon events or
occurrences subsequent to the effective date of this Agreement. You expressly
acknowledge that the benefits being offered to you in



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this Agreement constitute consideration for the foregoing release that is in
addition to anything of value to which you are already entitled from the Company
and its affiliates.



























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         10. Notice. Written notices required or furnished under this Agreement
shall be sent to the following addresses:


         to the Company:   Attn: Senior Chairman of the Board
                                 Cullen/Frost Bankers, Inc.
                                 100 W. Houston Street
                                 P.O. Box 1600
                                 San Antonio, Texas  78296


         to you:                 Robert S. McClane
                                 132 Grant Avenue
                                 San Antonio, Texas  78209

Notices shall be effective on the first business day following receipt thereof.
Notices sent by mail shall be deemed received on the date of delivery shown on
the return receipt.

         11. TERMINATION OF PRIOR LETTER AGREEMENTS. THIS AGREEMENT IS INTENDED
TO REPLACE IN THE ENTIRETY THE LETTER AGREEMENTS DATED NOVEMBER 15, 1994 AND
MARCH 2, 1990 (THE "PRIOR AGREEMENTS") REGARDING A CHANGE IN CONTROL OF THE
COMPANY. BY MUTUAL AGREEMENT, THE PRIOR AGREEMENTS ARE HEREBY DECLARED NULL AND
VOID. THE RESPECTIVE OBLIGATIONS AND THE BENEFITS PROVIDED IN THE PRIOR
AGREEMENTS ARE TERMINATED AND OF NO FURTHER EFFECT.

         12. Miscellaneous. This Agreement constitutes the entire understanding
between you and the Company and its affiliates with respect to the subject
matter hereof, and supersedes all prior understandings, written or oral. The
terms of this Agreement may be changed, modified or discharged only by an
instrument in writing signed by you and the Senior Chairman or the Chairman of
the board. No waiver by either party hereto at any time of any breach by the
other party hereto of, or of compliance with, any condition or provision of this
Agreement to be performed by such other party shall be deemed a waiver of
similar or dissimilar provisions or conditions at the same or at any prior or
subsequent time. Except to the extent that the terms and provisions of this
Agreement are governed by Federal law, this Agreement shall be construed in
accordance with the laws of the State of Texas. This Agreement may be executed
in any number of counterparts, each of which shall be deemed to be original.

         13. Representations and Warranties. You warrant that you are over the
age of twenty-one (21) and competent to execute this Agreement; that in
executing this Agreement, you are not relying on any statement, representation,
advice or counsel of the other party to this Agreement, but are relying on your
own judgment and/or that of your independent counsel; and that the Agreement is
the result of negotiation between the parties. You agree that you have been
encouraged to and have had an opportunity to consult with an attorney of your
choosing regarding the Agreement, that it was executed voluntarily without
duress or coercion of any form. You further acknowledge that you have been
afforded a period of at least 21 days within which to consider this Agreement
and that you understand that for a period of seven (7) days following the
execution of this Agreement you may revoke the same,



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and that the Agreement shall not become effective and enforceable until this
revocation period has expired.

         If this letter correctly sets forth our agreement on the subject matter
hereof, kindly sign and return to the Company the enclosed copy of this letter
which will then constitute our binding agreement on this subject.

                                   Sincerely,

                                   CULLEN/FROST BANKERS, LTD.


                                   By: /s/ T.C. Frost
                                   ------------------------------------------
                                           T.C. Frost, Senior Chairman of the
                                           Board of Directors

Agreed to this 28th day
of June, 1996

/s/ Robert S. McClane
- ---------------------
   Robert S. McClane












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