LETTER OF TRANSMITTAL
 
                              M&I CAPITAL TRUST A
 
                             OFFER TO EXCHANGE ITS
                           7.65% CAPITAL SECURITIES
          WHICH HAVE BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933
                      FOR ANY AND ALL OF ITS OUTSTANDING
                           7.65% CAPITAL SECURITIES
               (LIQUIDATION AMOUNT $1,000 PER CAPITAL SECURITY)
                PURSUANT TO THE PROSPECTUS DATED MARCH 7, 1997
 
      THE EXCHANGE OFFER AND WITHDRAWAL RIGHTS WILL EXPIRE AT 5:00 P.M.,
 NEW YORK CITY TIME, ON APRIL 10, 1997, UNLESS THE EXCHANGE OFFER IS
 EXTENDED.
 
                 The Exchange Agent for the Exchange Offer is:
 
                           THE CHASE MANHATTAN BANK
 
    By Mail or Hand              By Facsimile         To Confirm by Telephone:
       Delivery:                 Transmission:
 
 
 
                                                        Carlos Esteves: (212)
  The Chase Manhattan           (212) 638-7375                638-0828
          Bank                        or
                                (212) 344-9367
55 Water Street, Second
       Floor     
    Room 234--North
        Building
   New York, New York
         10041
  Attn: Carlos Esteves
 
  DELIVERY OF THIS LETTER OF TRANSMITTAL TO AN ADDRESS OTHER THAN AS SET FORTH
ABOVE OR TRANSMISSION OF THIS LETTER OF TRANSMITTAL VIA FACSIMILE TO A NUMBER
OTHER THAN AS SET FORTH ABOVE DOES NOT CONSTITUTE A VALID DELIVERY. THE
INSTRUCTIONS CONTAINED HEREIN SHOULD BE READ CAREFULLY BEFORE THIS LETTER OF
TRANSMITTAL IS COMPLETED.
 
  Capitalized terms used but not defined herein shall have the same meaning
given them in the Prospectus (as defined below).
 
  This Letter of Transmittal is to be completed by holders of Old Capital
Securities (as defined below) either if Old Capital Securities are to be
forwarded herewith or if tenders of Old Capital Securities are to be made by
book-entry transfer to an account maintained by The Chase Manhattan Bank (the
"Exchange Agent") at The Depository Trust Company ("DTC") pursuant to the
procedures set forth in "The Exchange Offer--Procedures for Tendering Old
Capital Securities" in the Prospectus and an Agent's Message (as defined
herein) is not delivered.
 
  Holders of Old Capital Securities whose certificates (the "Certificates")
for such Old Capital Securities are not immediately available or who cannot
deliver their Certificates and all other required documents to the Exchange
Agent on or prior to the Expiration Date (as defined in the Prospectus) or who
cannot complete the procedures for book-entry transfer on a timely basis, must
tender their Old Capital Securities according to the guaranteed delivery
procedures set forth in "The Exchange Offer--Procedures for Tendering Old
Capital Securities" in the Prospectus.
 
  DELIVERY OF DOCUMENTS TO DTC DOES NOT CONSTITUTE DELIVERY TO THE EXCHANGE
AGENT.
 
                    NOTE: SIGNATURES MUST BE PROVIDED BELOW
              PLEASE READ THE ACCOMPANYING INSTRUCTIONS CAREFULLY

 
                   ALL TENDERING HOLDERS COMPLETE THIS BOX:
 
                DESCRIPTION OF OLD CAPITAL SECURITIES TENDERED
- -------------------------------------------------------------------------------


       NAME(S) AND
      ADDRESS(ES) OF
    REGISTERED HOLDER                  OLD CAPITAL SECURITIES TENDERED
   (FILL IN, IF BLANK)         (ATTACH ADDITIONAL SIGNED SCHEDULE IF NECESSARY)
- ------------------------------------------------------------------------------------
                                                AGGREGATE
                                              LIQUIDIATION   LIQUIDATION
                             CERTIFICATE     AMOUNT TENDERED   AMOUNT     NUMBER OF
                               NUMBERS*          (ATTACH      TENDERED   BENEFICIAL
                          (ATTACH ADDITIONAL ADDITIONAL LIST  (IF LESS   HOLDERS FOR
                          LIST IF NECESSARY)  IF NECESSARY)  THAN ALL)**  WHOM HELD
                                 ---------------------------------------------------
                                                             
                                                $             $
                                 ---------------------------------------------------
                                 ---------------------------------------------------
                                 ---------------------------------------------------
                                 ---------------------------------------------------
                                 ---------------------------------------------------
  TOTAL AMOUNT TENDERED:                        $             $

 
* Need not be completed by book-entry holders. Such holders should check the
  appropriate box below and provide the requested information.
** Need not be completed if tendering for exchange all Old Capital Securities
   held. Old Capital Securities may be tendered in whole or in part in
   denominations of $100,000 and integral multiples of $1,000 in excess
   thereof, provided that if any Old Capital Securities are tendered for
   exchange in part, the untendered principal amount thereof must be $100,000
   or any integral multiple of $1,000 in excess thereof. All Old Capital
   Securities held shall be deemed tendered unless a lesser number is
   specified in this column.
 
 (BOXES BELOW TO BE CHECKED BY ELIGIBLE INSTITUTIONS ONLY. SEE INSTRUCTION 1)
 
[_]CHECK HERE IF TENDERED OLD CAPITAL SECURITIES ARE BEING DELIVERED BY BOOK-
   ENTRY TRANSFER MADE TO THE ACCOUNT MAINTAINED BY THE EXCHANGE AGENT AT DTC
   AND COMPLETE THE FOLLOWING:
 
  Name of Tendering Institution:   -------------------------------
 
  DTC Account Number:              -------------------------------
 
  Transaction Code Number:         -------------------------------
 
[_]CHECK HERE AND ENCLOSE A PHOTOCOPY OF THE NOTICE OF GUARANTEED DELIVERY IF
   TENDERED OLD CAPITAL SECURITIES ARE BEING DELIVERED PURSUANT TO A NOTICE OF
   GUARANTEED DELIVERY PREVIOUSLY SENT TO THE EXCHANGE AGENT AND COMPLETE THE
   FOLLOWING:
 
  Name of Registered Holder:       -------------------------------
 
  Window Ticket Number (if any):   -------------------------------
 
  Date of Notice of Guaranteed Delivery:
                                   -------------------------------
 
  Institution which Guaranteed Delivery:
                                   -------------------------------
 
  If Guaranteed Delivery is to be made by book-entry transfer:
 
  Name of Tendering Institution:   -------------------------------
 
  DTC Account Number:              -------------------------------
 
  Transaction Code Number:         -------------------------------
 
                                       2

 
[_]CHECK HERE IF TENDERED BY BOOK-ENTRY TRANSFER AND NON-EXCHANGED OLD CAPITAL
   SECURITIES ARE TO BE RETURNED BY CREDITING THE DTC ACCOUNT NUMBER SET FORTH
   ABOVE.
 
[_]CHECK HERE IF YOU ARE A BROKER-DEALER WHO ACQUIRED THE OLD CAPITAL
   SECURITIES FOR ITS OWN ACCOUNT AS A RESULT OF MARKET MAKING OR OTHER
   TRADING ACTIVITIES (A "PARTICIPATING BROKER-DEALER") AND WISH TO RECEIVE 10
   ADDITIONAL COPIES OF THE PROSPECTUS AND 10 COPIES OF ANY AMENDMENTS OR
   SUPPLEMENTS THERETO.
 
  Name:     ------------------------------------------------------
 
  Address:  ------------------------------------------------------
 
  Telephone Number and Contact Person:
                                   -------------------------------
 
LADIES AND GENTLEMEN:
 
  The undersigned hereby tenders to M&I Capital Trust A, a Delaware business
trust (the "Trust") and Marshall & Ilsley Corporation, a Wisconsin
corporation, as Depositor ("M&I"), the above described aggregate Liquidation
Amount of the Trust's 7.65% Capital Securities due December 1, 2026 (the "Old
Capital Securities") in exchange for a like aggregate Liquidation Amount of
the Trust's 7.65% Capital Securities due December 1, 2026 (the "New Capital
Securities") which have been registered under the Securities Act of 1933 (the
"Securities Act"), upon the terms and subject to the conditions set forth in
the Prospectus dated March 7, 1997 (as the same may be amended or supplemented
from time to time, the "Prospectus"), receipt of which is acknowledged, and in
this Letter of Transmittal (which, together with the Prospectus, constitute
the "Exchange Offer").
 
  Subject to and effective upon the acceptance for exchange of all or any
portion of the Old Capital Securities tendered herewith in accordance with the
terms and conditions of the Exchange Offer (including, if the Exchange Offer
is extended or amended, the terms and conditions of any such extension or
amendment), the undersigned hereby sells, assigns and transfers to or upon the
order of the Trust all right, title and interest in and to such Old Capital
Securities as are being tendered herewith. The undersigned hereby irrevocably
constitutes and appoints the Exchange Agent as its agent and attorney-in-fact
(with full knowledge that the Exchange Agent is also acting as agent of the
Trust and M&I in connection with the Exchange Offer) with respect to the
tendered Old Capital Securities, with full power of substitution (such power
of attorney being deemed to be an irrevocable power coupled with an interest),
subject only to the right of withdrawal described in the Prospectus, to: (i)
deliver Certificates for Old Capital Securities to the Trust or M&I together
with all accompanying evidences of transfer and authenticity to, or upon the
order of, the Trust, upon receipt by the Exchange Agent, as the undersigned's
agent, of the New Capital Securities to be issued in exchange for such Old
Capital Securities; (ii) present Certificates for such Old Capital Securities
for transfer, and to transfer the Old Capital Securities on the books of the
Trust; and (iii) receive for the account of the Trust all benefits and
otherwise exercise all rights of beneficial ownership of such Old Capital
Securities, all in accordance with the terms and conditions of the Exchange
Offer.
 
  THE UNDERSIGNED HEREBY REPRESENTS AND WARRANTS THAT THE UNDERSIGNED HAS FULL
POWER AND AUTHORITY TO TENDER, EXCHANGE, SELL, ASSIGN AND TRANSFER THE OLD
CAPITAL SECURITIES TENDERED HEREBY AND THAT, WHEN THE SAME ARE ACCEPTED FOR
EXCHANGE, THE TRUST WILL ACQUIRE GOOD, MARKETABLE AND UNENCUMBERED TITLE
THERETO, FREE AND CLEAR OF ALL LIENS, RESTRICTIONS,
 
                                       3

 
CHARGES AND ENCUMBRANCES, AND THAT THE OLD CAPITAL SECURITIES TENDERED HEREBY
ARE NOT SUBJECT TO ANY ADVERSE CLAIMS OR PROXIES. THE UNDERSIGNED WILL, UPON
REQUEST, EXECUTE AND DELIVER ANY ADDITIONAL DOCUMENTS DEEMED BY M&I, THE TRUST
OR THE EXCHANGE AGENT TO BE NECESSARY OR DESIRABLE TO COMPLETE THE EXCHANGE,
ASSIGNMENT AND TRANSFER OF THE OLD CAPITAL SECURITIES TENDERED HEREBY, AND THE
UNDERSIGNED WILL COMPLY WITH ITS OBLIGATIONS UNDER THE CAPITAL SECURITIES
REGISTRATION RIGHTS AGREEMENT. THE UNDERSIGNED HAS READ AND AGREES TO ALL OF
THE TERMS OF THE EXCHANGE OFFER.
 
  The name(s) and address(es) of the registered holder of the Old Capital
Securities tendered hereby should be printed above, if they are not already
set forth above, as they appear on the Certificates representing such Old
Capital Securities. The Certificate number(s) and the Old Capital Securities
that the undersigned wishes to tender should be indicated in the appropriate
boxes above.
 
  If any tendered Old Capital Securities are not exchanged pursuant to the
Exchange Offer for any reason, or if Certificates are submitted for more Old
Capital Securities than are tendered or accepted for exchange, Certificates
for such nonexchanged or nontendered Old Capital Securities will be returned
(or, in the case of Old Capital Securities tendered by book-entry transfer,
such Old Capital Securities will be credited to an account maintained at DTC),
without expense to the tendering holder promptly following the expiration or
termination of the Exchange Offer.
 
  The undersigned understands that tenders of Old Capital Securities pursuant
to any one of the procedures described in "The Exchange Offer--Procedures for
Tendering Old Capital Securities" in the Prospectus and in the instructions
herein will, upon M&I's and the Trust's acceptance for exchange of such
tendered Old Capital Securities, constitute a binding agreement between the
undersigned, M&I and the Trust upon the terms and subject to the conditions of
the Exchange Offer. The undersigned recognizes that, under certain
circumstances set forth in the Prospectus, M&I and the Trust may not be
required to accept for exchange any of the Old Capital Securities tendered
hereby.
 
  Unless otherwise indicated herein in the box entitled "Special Issuance
Instructions" below, the undersigned hereby directs that the New Capital
Securities be issued in the name(s) of the undersigned or, in the case of a
book-entry transfer of Old Capital Securities, that such New Capital
Securities be credited to the account indicated above maintained at DTC. If
applicable, substitute Certificates representing Old Capital Securities not
exchanged or not accepted for exchange will be issued to the undersigned or,
in the case of a book-entry transfer of Old Capital Securities, will be
credited to the account indicated above maintained at DTC. Similarly, unless
otherwise indicated under "Special Delivery Instructions," please deliver New
Capital Securities to the undersigned at the address shown below the
undersigned's signature.
 
  BY TENDERING OLD CAPITAL SECURITIES AND EXECUTING THIS LETTER OF
TRANSMITTAL, THE UNDERSIGNED HEREBY REPRESENTS AND AGREES THAT: (i) THE
UNDERSIGNED (IF NOT A BROKER-DEALER) IS NOT AN "AFFILIATE" OF M&I OR THE
TRUST; (ii) ANY NEW CAPITAL SECURITIES TO BE RECEIVED BY THE UNDERSIGNED ARE
BEING ACQUIRED IN THE ORDINARY COURSE OF ITS BUSINESS; AND (iii) THE
UNDERSIGNED HAS NO ARRANGEMENT OR UNDERSTANDING WITH ANY PERSON TO PARTICIPATE
IN A DISTRIBUTION (WITHIN THE MEANING OF THE SECURITIES ACT) OF NEW CAPITAL
SECURITIES TO BE RECEIVED IN THE EXCHANGE OFFER. BY TENDERING OLD CAPITAL
SECURITIES PURSUANT TO THE EXCHANGE OFFER AND EXECUTING THIS LETTER OF
TRANSMITTAL, A HOLDER OF OLD CAPITAL SECURITIES WHICH IS A BROKER-DEALER
REPRESENTS AND AGREES, CONSISTENT WITH CERTAIN INTERPRETIVE LETTERS ISSUED BY
THE STAFF OF THE DIVISION OF CORPORATION FINANCE OF THE SECURITIES AND
EXCHANGE COMMISSION TO THIRD PARTIES, THAT: (i) SUCH OLD CAPITAL SECURITIES
HELD BY THE BROKER-DEALER ARE HELD ONLY AS A NOMINEE; OR (ii) SUCH OLD CAPITAL
 
                                       4

 
SECURITIES WERE ACQUIRED BY SUCH BROKER-DEALER FOR ITS OWN ACCOUNT AS A RESULT
OF MARKET-MAKING ACTIVITIES OR OTHER TRADING ACTIVITIES AND IT WILL DELIVER
THE PROSPECTUS MEETING THE REQUIREMENTS OF THE SECURITIES ACT IN CONNECTION
WITH ANY RESALE OF SUCH NEW CAPITAL SECURITIES (PROVIDED THAT, BY SO
ACKNOWLEDGING AND BY DELIVERING A PROSPECTUS, SUCH BROKER-DEALER WILL NOT BE
DEEMED TO ADMIT THAT IT IS AN "UNDERWRITER" WITHIN THE MEANING OF THE
SECURITIES ACT).
 
  M&I AND THE TRUST HAVE AGREED THAT, SUBJECT TO THE PROVISIONS OF THE CAPITAL
SECURITIES REGISTRATION RIGHTS AGREEMENT, THE PROSPECTUS MAY BE USED BY A
PARTICIPATING BROKER-DEALER (AS DEFINED BELOW) IN CONNECTION WITH RESALES OF
NEW CAPITAL SECURITIES RECEIVED IN EXCHANGE FOR OLD CAPITAL SECURITIES, WHERE
SUCH OLD CAPITAL SECURITIES WERE ACQUIRED BY SUCH PARTICIPATING BROKER-DEALER
FOR ITS OWN ACCOUNT AS A RESULT OF MARKET-MAKING ACTIVITIES OR OTHER TRADING
ACTIVITIES, FOR A PERIOD ENDING ONE YEAR AFTER THE ORIGINAL ISSUANCE OF THE
OLD CAPITAL SECURITIES. IN THAT REGARD, EACH BROKER-DEALER WHO ACQUIRED OLD
CAPITAL SECURITIES FOR ITS OWN ACCOUNT AS A RESULT OF MARKET-MAKING OR OTHER
TRADING ACTIVITIES (A "PARTICIPATING BROKER-DEALER"), BY TENDERING SUCH OLD
CAPITAL SECURITIES AND EXECUTING THIS LETTER OF TRANSMITTAL, AGREES TO COMPLY
WITH APPLICABLE LAWS IN CONNECTION WITH OFFERS AND SALES BY WAY OF THIS
PROSPECTUS INCLUDING WITHOUT LIMITATION THE PROSPECTUS DELIVERY REQUIREMENTS
OF THE SECURITIES ACT, THE APPLICABLE REQUIREMENTS OF RULE 10B-5 AND UNDER THE
EXCHANGE ACT AND REGULATION M, AND THAT, UPON RECEIPT OF NOTICE FROM M&I OR
THE TRUST OF THE OCCURRENCE OF ANY EVENT OR THE DISCOVERY OF ANY FACT WHICH
MAKES ANY STATEMENT RESPECT OR WHICH CAUSES THE PROSPECTUS TO OMIT TO STATE A
MATERIAL FACT NECESSARY CONTAINED OR INCORPORATED BY REFERENCE IN THE
PROSPECTUS UNTRUE IN ANY MATERIAL IN ORDER TO MAKE THE STATEMENTS CONTAINED OR
INCORPORATED BY REFERENCE THEREIN, IN LIGHT OF THE CIRCUMSTANCES UNDER WHICH
THEY WERE MADE, NOT MISLEADING OR OF THE OCCURRENCE OF CERTAIN OTHER EVENTS
SPECIFIED IN THE CAPITAL SECURITIES REGISTRATION RIGHTS AGREEMENT, SUCH
PARTICIPATING BROKER-DEALER WILL SUSPEND THE SALE OF NEW CAPITAL SECURITIES
PURSUANT TO THE PROSPECTUS UNTIL M&I AND THE TRUST HAVE AMENDED OR
SUPPLEMENTED THE PROSPECTUS TO CORRECT SUCH MISSTATEMENT OR OMISSION AND HAS
FURNISHED COPIES OF THE AMENDED OR SUPPLEMENTED PROSPECTUS TO THE
PARTICIPATING BROKER-DEALER OR M&I OR THE TRUST HAS GIVEN NOTICE THAT THE SALE
OF THE NEW CAPITAL SECURITIES MAY BE RESUMED, AS THE CASE MAY BE.
 
  Holders of Old Capital Securities whose Old Capital Securities are accepted
for exchange will not receive accumulated distributions on such Old Capital
Securities for any period from and after the last Distribution Payment Date to
which distributions have been paid or duly provided for on such Old Capital
Securities prior to the original issue date of the New Capital Securities or,
if no such distributions have been paid or duly provided for, will not receive
any accumulated distributions on such Old Capital Securities, and the
undersigned waives the right to receive any distributions on such Old Capital
Securities accrued from and after such Distribution Payment Date or, if no
such distributions have been paid or duly provided for, from and after
December 9, 1996.
 
                                       5

 
  All authority herein conferred or agreed to be conferred in this Letter of
Transmittal shall survive the death or incapacity of the undersigned and any
obligation of the undersigned hereunder shall be binding upon the heirs,
executors, administrators, personal representatives, trustees in bankruptcy,
legal representatives, successors and assigns of the undersigned. Except as
stated in the Prospectus, this tender is irrevocable.
 
PLEASE SIGN HERE                          PLEASE SIGN HERE
 
 
- -------------------------------------     -------------------------------------
        Authorized Signature                      Authorized Signature
Name: _______________________________     Name: _______________________________
Title: ______________________________     Title: ______________________________
Address: ____________________________     Address: ____________________________
                                          -------------------------------------
- -------------------------------------     Telephone Number: ___________________
Telephone Number: ___________________     Dated: ______________________________
Dated: ______________________________     -------------------------------------
- -------------------------------------       Taxpayer Identification or Social
                                                     Security Number
 
  Taxpayer Identification or Social
           Security Number
  (NOTE: Signature(s) must be guaranteed if required by Instruction 2.) (Must
be signed by registered holder exactly as name(s) appear(s) on Certificate(s)
for the Old Capital Securities hereby tendered or on a security position
listing, or by any person(s) authorized to become the registered holder(s) by
endorsements and documents transmitted herewith, including such opinions of
counsel, certifications and other information as may be required by the Trust
or the Trustee for the Old Capital Securities to comply with the restrictions
on transfer applicable to the Old Capital Securities. If signature is by an
attorney-in-fact, executor, administrator, trustee, guardian, officer of a
corporation or another acting in a fiduciary capacity or representative
capacity, please set forth the signer's full title.) (See Instructions 2, 5
and 6) (Please complete substitute Form W-9 below)
 
                                       6

 
                           GUARANTEE OF SIGNATURE(S)
                   (IF REQUIRED -- SEE INSTRUCTIONS 2 AND 5)
 
 -------------------------------------   Date: _______________________________
         Authorized Signature
 
 Name of Eligible Institution Guaranteeing Signature:
 -------------------------------------   Address: ____________________________
 
 Capacity (full title): ______________   -------------------------------------
 
 Telephone Number: ___________________   -------------------------------------
 
 
                                             SPECIAL DELIVERY INSTRUCTIONS
     SPECIAL ISSUANCE INSTRUCTIONS           (SEE INSTRUCTIONS 1, 5 AND 6)
 
     (SEE INSTRUCTIONS 1, 5 AND 6)
 
                                          To be completed ONLY if New Capital
  To be completed ONLY if the New        Securities or any Old Capital
 Capital Securities or any Old           Securities that are not tendered are
 Capital Securities that are not         to be sent to someone other than the
 tendered are to be issued in the        registered holder of the Old Capital
 name of someone other than the          Securities whose name(s) appear(s)
 registered holder of the Old Capital    above, or to such registered
 Securities whose name(s) appear(s)      holder(s) at an address other than
 above.                                  that shown above.
 
 
 
 Issue:
 
                                         Mail:
 
 [_] Old Capital Securities not
 tendered
 
                                         [_] Old Capital Securities not
                                         tendered
 
 [_] New Capital Securities, to:
 
                                         [_] New Capital Securities, to:
 
 Name(s): ____________________________
 
                                         Name(s): ____________________________
 
 Address: ____________________________   Address: ____________________________
 -------------------------------------
 
                                         -------------------------------------
 
 Telephone Number: ___________________
 
                                         Telephone Number: ___________________
 
 -------------------------------------   -------------------------------------
   Taxpayer Identification or Social       Taxpayer Identification or Social
            Security Number                         Security Number
 
 
 
                                       7

 
                                 INSTRUCTIONS
       (FORMING PART OF THE TERMS AND CONDITIONS OF THE EXCHANGE OFFER)
 
  1. DELIVERY OF LETTER OF TRANSMITTAL AND CERTIFICATES; GUARANTEED DELIVERY
PROCEDURES. This Letter of Transmittal is to be completed either if (a)
Certificates are to be forwarded herewith or (b) tenders are to be made
pursuant to the procedures for tender by book-entry transfer set forth in "The
Exchange Offer--Procedures for Tendering Old Capital Securities" in the
Prospectus and an Agent's Message is not delivered. Certificates, or timely
confirmation of a book-entry transfer of such Old Capital Securities into the
Exchange Agent's account at DTC, as well as this Letter of Transmittal (or
facsimile thereof), properly completed and duly executed, with any required
signature guarantees and any other documents required by this Letter of
Transmittal, must be received by the Exchange Agent at its address set forth
herein on or prior to the Expiration Date. Tenders by book-entry transfer may
also be made by delivering an Agent's Message in lieu of this Letter of
Transmittal. The term "book-entry confirmation" means a timely confirmation of
book-entry transfer of Old Capital Securities into the Exchange Agent's
account at DTC. The term "Agent's Message" means a message, transmitted by DTC
to and received by the Exchange Agent and forming a part of a book-entry
confirmation, which states that DTC has received an express acknowledgement
from the tendering participant, which acknowledgement states that such
participant has received and agrees to be bound by the Letter of Transmittal
and that the Trust and M&I may enforce the Letter of Transmittal against such
participant. Old Capital Securities may be tendered in whole or in part in the
principal amount of $100,000 (100 Capital Securities) and integral multiples
of $1,000 in excess thereof, provided that, if any Old Capital Securities are
tendered for exchange in part, the untendered principal amount thereof must be
$100,000 (100 Capital Securities) or any integral multiple of $1,000 in excess
thereof.
 
  Holders who wish to tender their Old Capital Securities and: (i) whose Old
Capital Securities are not immediately available; (ii) who cannot deliver
their Old Capital Securities, this Letter of Transmittal and all other
required documents to the Exchange Agent on or prior to the Expiration Date;
or (iii) who cannot complete the procedures for delivery by book-entry
transfer on a timely basis, may tender their Old Capital Securities by
properly completing and duly executing a Notice of Guaranteed Delivery
pursuant to the guaranteed delivery procedures set forth in "The Exchange
Offer--Procedures for Tendering Old Capital Securities" in the Prospectus.
Pursuant to such procedures: (i) such tender must be made by or through an
Eligible Institution (as defined below); (ii) a properly completed and duly
executed Notice of Guaranteed Delivery, substantially in the form made
available by the Trust, must be received by the Exchange Agent on or prior to
the Expiration Date; and (iii) the Certificates (or a book-entry confirmation)
representing all tendered Old Capital Securities, in proper form for transfer,
together with a Letter of Transmittal (or facsimile thereof or Agent's Message
in lieu thereof), properly completed and duly executed, with any required
signature guarantees and any other documents required by this Letter of
Transmittal, must be received by the Exchange Agent within three New York
Stock Exchange, Inc. trading days after the date of execution of such Notice
of Guaranteed Delivery, all as provided in "The Exchange Offer--Procedures for
Tendering Old Capital Securities" in the Prospectus.
 
  The Notice of Guaranteed Delivery may be delivered by hand or transmitted by
facsimile or mail to the Exchange Agent and must include a guarantee by an
Eligible Institution in the form set forth in such Notice. For Old Capital
Securities to be properly tendered pursuant to the guaranteed delivery
procedure, the Exchange Agent must receive a Notice of Guaranteed Delivery on
or prior to the Expiration Date. As used herein and in the Prospectus,
"Eligible Institution" means a firm or other entity identified in Rule 17Ad-15
under the Exchange Act as "an eligible guarantor institution," including (as
such terms are defined therein): (i) a bank; (ii) a broker, dealer, municipal
securities broker or dealer or government securities broker or dealer; (iii) a
credit union; (iv) a national securities exchange, registered securities
association or clearing agency; or (v) a savings association that is a
participant in a Securities Transfer Association.
 
                                       8

 
  THE METHOD OF DELIVERY OF CERTIFICATES, THIS LETTER OF TRANSMITTAL AND ALL
OTHER REQUIRED DOCUMENTS IS AT THE OPTION AND SOLE RISK OF THE TENDERING
HOLDER AND THE DELIVERY WILL BE DEEMED MADE ONLY WHEN ACTUALLY RECEIVED BY THE
EXCHANGE AGENT. IF DELIVERY IS BY MAIL, REGISTERED MAIL WITH RETURN RECEIPT
REQUESTED, PROPERLY INSURED, OR OVERNIGHT DELIVERY SERVICE IS RECOMMENDED. IN
ALL CASES, SUFFICIENT TIME SHOULD BE ALLOWED TO ENSURE TIMELY DELIVERY.
 
  Neither M&I nor the Trust will accept any alternative, conditional or
contingent tenders. Each tendering holder, by execution of a Letter of
Transmittal (or facsimile thereof or Agent's Message in lieu thereof), waives
any right to receive any notice of the acceptance of such tender.
 
  2. GUARANTEE OF SIGNATURES. No signature guarantee on this Letter of
Transmittal is required if: (i) this Letter of Transmittal is signed by the
registered holder (which shall include any participant in DTC whose name
appears on a security position listing as the owner of the Old Capital
Securities) of Old Capital Securities tendered herewith, unless such holder
has completed either the box entitled "Special Issuance Instructions" or the
box entitled "Special Delivery Instructions" above; or (ii) such Old Capital
Securities are tendered for the account of a firm that is an Eligible
Institution. In all other cases, an Eligible Institution must guarantee the
signature(s) on this Letter of Transmittal. See Instruction 5.
 
  3. INADEQUATE SPACE. If the space provided in the box captioned "Description
of Old Capital Securities Tendered" is inadequate, the Certificate number(s)
and/or the principal amount of Old Capital Securities and any other required
information should be listed on a separate signed schedule which is attached
to this Letter of Transmittal.
 
  4. PARTIAL TENDERS AND WITHDRAWAL RIGHTS. Tenders of Old Capital Securities
will be accepted only in the principal amount of $100,000 (100 Capital
Securities) and integral multiples of $1,000 in excess thereof, provided that
if any Old Capital Securities are tendered for exchange in part, the
untendered principal amount thereof must be $100,000 (100 Capital Securities)
or any integral multiple of $1,000 in excess thereof. If less than all the Old
Capital Securities evidenced by any Certificate submitted are to be tendered,
fill in the principal amount of Old Capital Securities which are to be
tendered in the box entitled "Liquidation Amount Tendered (if less than all)."
In such case, new Certificate(s) for the remainder of the Old Capital
Securities that were evidenced by your old Certificate(s) will be sent to the
holder of the Old Capital Security, promptly after the Expiration Date unless
the appropriate boxes on this Letter of Transmittal are completed. All Old
Capital Securities represented by Certificates delivered to the Exchange Agent
will be deemed to have been tendered unless otherwise indicated.
 
  Except as otherwise provided herein, tenders of Old Capital Securities may
be withdrawn at any time on or prior to the Expiration Date. In order for a
withdrawal to be effective on or prior to that time, a written or facsimile
transmission of such notice of withdrawal must be timely received by the
Exchange Agent at its address set forth above or in the Prospectus on or prior
to the Expiration Date. Any such notice of withdrawal must specify the name of
the person who tendered the Old Capital Securities to be withdrawn, the
aggregate principal amount of Old Capital Securities to be withdrawn, and (if
Certificates for Old Capital Securities have been tendered) the name of the
registered holder of the Old Capital Securities as set forth on the
Certificate for the Old Capital Securities, if different from that of the
person who tendered such Old Capital Securities. If Certificates for the Old
Capital Securities have been delivered or otherwise identified to the Exchange
Agent, then prior to the physical release of such Certificates for the Old
Capital Securities, the tendering holder must submit the serial numbers shown
on the particular Certificates for the Old Capital Securities to be withdrawn
and the signature on the notice of withdrawal must be guaranteed by an
Eligible Institution, except in the case of Old Capital Securities tendered
for the account of an Eligible Institution. If Old Capital Securities have
been tendered pursuant to the procedures for book-entry transfer set forth in
"The Exchange Offer--Procedures for Tendering Old Capital Securities," the
notice of withdrawal must specify the name and number of the account at DTC to
be credited with the withdrawal of Old Capital Securities,
 
                                       9

 
in which case a notice of withdrawal will be effective if delivered to the
Exchange Agent by written or facsimile transmission. Withdrawals of tenders of
Old Capital Securities may not be rescinded. Old Capital Securities properly
withdrawn will not be deemed validly tendered for purposes of the Exchange
Offer, but may be retendered at any subsequent time on or prior to the
Expiration Date by following any of the procedures described in the Prospectus
under "The Exchange Offer--Procedures for Tendering Old Capital Securities."
 
  All questions as to the validity, form and eligibility (including time of
receipt) of such withdrawal notices will be determined by M&I and the Trust,
in their sole discretion, whose determination shall be final and binding on
all parties. M&I and the Trust, any affiliates or assigns of M&I and the
Trust, the Exchange Agent or any other person shall not be under any duty to
give any notification of any irregularities in any notice of withdrawal or
incur any liability for failure to give any such notification. Any Old Capital
Securities which have been tendered but which are withdrawn will be returned
to the holder thereof without cost to such holder promptly after withdrawal.
 
  5. SIGNATURES ON LETTER OF TRANSMITTAL, ASSIGNMENTS AND ENDORSEMENTS. If
this Letter of Transmittal is signed by the registered holder(s) of the Old
Capital Securities tendered hereby, the signature(s) must correspond exactly
with the name(s) as written on the face of the Certificate(s) or on a security
position listing without alteration, enlargement or any change whatsoever.
 
  If any of the Old Capital Securities tendered hereby are owned of record by
two or more joint owners, all such owners must sign this Letter of
Transmittal.
 
  If any tendered Old Capital Securities are registered in different name(s)
on several Certificates, it will be necessary to complete, sign and submit as
many separate Letters of Transmittal (or facsimiles thereof or Agent's Message
in lieu thereof) as there are different registrations of Certificates.
 
  If this Letter of Transmittal or any Certificates or bond powers are signed
by trustees, executors, administrators, guardians, attorneys-in-fact, officers
of corporations or others acting in a fiduciary or representative capacity,
such persons should so indicate when signing and must submit proper evidence
satisfactory to M&I and the Trust, in their sole discretion, of such persons'
authority to so act.
 
  When this Letter of Transmittal is signed by the registered owner(s) of the
Old Capital Securities listed and transmitted hereby, no endorsement(s) of
Certificate(s) or separate bond power(s) are required unless New Capital
Securities are to be issued in the name of a person other than the registered
holder(s). Signature(s) on such Certificate(s) or bond power(s) must be
guaranteed by an Eligible Institution.
 
  If this Letter of Transmittal is signed by a person other than the
registered owner(s) of the Old Capital Securities listed, the Certificates
must be endorsed or accompanied by appropriate bond powers, signed exactly as
the name or names of the registered owner(s) appear(s) on the Certificates,
and also must be accompanied by such opinions of counsel, certifications and
other information as M&I, the Trust or the Trustee for the Old Capital
Securities may require in accordance with the restrictions on transfer
applicable to the Old Capital Securities. Signatures on such Certificates or
bond powers must be guaranteed by an Eligible Institution.
 
  6. SPECIAL ISSUANCE AND DELIVERY INSTRUCTIONS. If New Capital Securities are
to be issued in the name of a person other than the signer of this Letter of
Transmittal, or if New Capital Securities are to be sent to someone other than
the signer of this Letter of Transmittal or to an address other than that
shown above, the appropriate boxes on this Letter of Transmittal should be
completed. Certificates for Old Capital Securities not exchanged will be
returned by mail or, if tendered by book-entry transfer, by crediting the
account indicated above maintained at DTC. See Instruction 4.
 
 
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  7. IRREGULARITIES. M&I and the Trust will determine, in their sole
discretion, all questions as to the form of documents, validity, eligibility
(including time of receipt) and acceptance for exchange of any tender of Old
Capital Securities, which determination shall be final and binding on all
parties. M&I and the Trust reserve the absolute right to reject any and all
tenders determined by either of them not to be in proper form or the
acceptance of which, or exchange for, may, in the view of counsel to M&I and
the Trust, be unlawful. M&I and the Trust also reserve the absolute right,
subject to applicable law, to waive any of the conditions of the Exchange
Offer set forth in the Prospectus under "The Exchange Offer--Conditions to the
Exchange Offer" or any conditions or irregularity in any tender of Old Capital
Securities of any particular holder whether or not similar conditions or
irregularities are waived in the case of other holders. M&I's and the Trust's
interpretation of the terms and conditions of the Exchange Offer (including
this Letter of Transmittal and the instructions hereto) will be final and
binding. No tender of Old Capital Securities will be deemed to have been
validly made until all irregularities with respect to such tender have been
cured or waived. M&I, the Trust, any affiliates or assigns of M&I, the Trust,
the Exchange Agent, or any other person shall not be under any duty to give
notification of any irregularities in tenders or incur any liability for
failure to give such notification.
 
  8. QUESTIONS, REQUESTS FOR ASSISTANCE AND ADDITIONAL COPIES. Questions and
requests for assistance may be directed to the Exchange Agent at its address
and telephone number set forth above. Additional copies of the Prospectus, the
Notice of Guaranteed Delivery and the Letter of Transmittal may be obtained
from the Exchange Agent or from your broker, dealer, commercial bank, trust
company or other nominee.
 
  9. BACKUP WITHHOLDING; SUBSTITUTE FORM W-9. Under U.S. Federal income tax
law, a holder whose tendered Old Capital Securities are accepted for exchange
is required to provide the Exchange Agent with such holder's correct taxpayer
identification number ("TIN") on Substitute Form W-9 below. If the Exchange
Agent is not provided with the correct TIN, the Internal Revenue Service (the
"IRS") may subject the holder or other payee to a $50 penalty. In addition,
payments to such holders or other payees with respect to Old Capital
Securities exchanged pursuant to the Exchange Offer may be subject to 31%
backup withholding.
 
  The box in Part 2 of the Substitute Form W-9 may be checked if the tendering
holder has not been issued a TIN and has applied for a TIN or intends to apply
for a TIN in the near future. If the box in Part 2 is checked, the holder or
other payee must also complete the Certificate of Awaiting Taxpayer
Identification Number below in order to avoid backup withholding.
Notwithstanding that the box in Part 2 is checked and the Certificate of
Awaiting Taxpayer Identification Number is completed, the Exchange Agent will
withhold 31% of all payments made prior to the time a properly certified TIN
is provided to the Exchange Agent. The Exchange Agent will retain such amounts
withheld during the 60 day period following the date of the Substitute Form W-
9. If the holder furnishes the Exchange Agent with its TIN within 60 days
after the date of the Substitute Form W-9, the amounts retained during the 60
day period will be remitted to the holder and no further amounts shall be
retained or withheld from payments made to the holder thereafter. If, however,
the holder has not provided the Exchange Agent with its TIN within such 60 day
period, amounts withheld will be remitted to the IRS as backup withholding. In
addition, 31% of all payments made thereafter will be withheld and remitted to
the IRS until a correct TIN is provided.
 
  The holder is required to give the Exchange Agent the TIN (e.g., social
security number or employer identification number) of the registered owner of
the Old Capital Securities or of the last transferee appearing on the
transfers attached to, or endorsed on, the Old Capital Securities. If the Old
Capital Securities are registered in more than one name or are not in the name
of the actual owner, consult the enclosed "Guidelines for Certification of
Taxpayer Identification Number on Substitute Form W-9" for additional guidance
on which number to report.
 
 
                                      11

 
  Certain holders (including, among others, corporations, financial
institutions and certain foreign persons) may not be subject to these backup
withholding and reporting requirements. Such holders should nevertheless
complete the attached Substitute Form W-9 below, and write "exempt" on the
face thereof, to avoid possible erroneous backup withholding. A foreign person
may qualify as an exempt recipient by submitting a properly completed IRS Form
W-8, signed under penalties of perjury, attesting to that holder's exempt
status. Please consult the enclosed "Guidelines for Certification of Taxpayer
Identification Number on Substitute Form W-9" for additional guidance on which
holders are exempt from backup withholding.
 
  Backup withholding is not an additional U.S. Federal income tax. Rather, the
U.S. Federal income tax liability of a person subject to backup withholding
will be reduced by the amount of tax withheld. If withholding results in an
overpayment of taxes, a refund may be obtained.
 
  10. LOST, DESTROYED OR STOLEN CERTIFICATES. If any Certificate(s)
representing Old Capital Securities have been lost, destroyed or stolen, the
holder should promptly notify the Exchange Agent. The holder will then be
instructed as to the steps that must be taken in order to replace the
Certificate(s). This Letter of Transmittal and related documents cannot be
processed until the procedures for replacing lost, destroyed or stolen
Certificate(s) have been followed.
 
  11. SECURITY TRANSFER TAXES. Holders who tender their Old Capital Securities
for exchange will not be obligated to pay any transfer taxes in connection
therewith. If, however, New Capital Securities are to be delivered to, or are
to be issued in the name of, any person other than the registered holder of
the Old Capital Securities tendered, or if a transfer tax is imposed for any
reason other than the exchange of Old Capital Securities in connection with
the Exchange Offer, then the amount of any such transfer tax (whether imposed
on the registered holder or any other persons) will be payable by the
tendering holder. If satisfactory evidence of payment of such taxes or
exemption therefrom is not submitted with the Letter of Transmittal, the
amount of such transfer taxes will be billed directly to such tendering
holder.
 
  IMPORTANT: THIS LETTER OF TRANSMITTAL (OR FACSIMILE THEREOF OR AGENT'S
MESSAGE IN LIEU THEREOF) AND ALL OTHER REQUIRED DOCUMENTS MUST BE RECEIVED BY
THE EXCHANGE AGENT ON OR PRIOR TO THE EXPIRATION DATE.
 
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               TO BE COMPLETED BY ALL TENDERING SECURITYHOLDERS:
                              (SEE INSTRUCTION 9)
 
                    PAYER'S NAME: THE CHASE MANHATTAN BANK
- -------------------------------------------------------------------------------
 SUBSTITUTE           PART 1--PLEASE PROVIDE        Social Security Number or
 FORM W-9             YOUR TIN ON THE LINE AT        Employer Identification
                      RIGHT AND CERTIFY BY                   Number
                      SIGNING AND DATING BELOW
 
 DEPARTMENT OF THE
 TREASURY INTERNAL                                 ---------------------------
 REVENUE
 
 SERVICE             ----------------------------------------------------------
                      PART 2--CERTIFICATION--Under penalties of perjury, I
                      certify that:
 
 PAYER'S
 REQUEST FOR          (1) The number shown on this form is my correct
 TAXPAYER'S               taxpayer identification number (or I am waiting for
 IDENTIFICATION           a number to be issued to me);
 NUMBER (TIN)         (2) I am not subject to backup withholding either
                          because: (a) I am exempt from backup withholding;
                          (b) I have not been notified by the Internal
                          Revenue Service ("IRS") that I am subject to backup
                          withholding as a result of a failure to report all
                          interest or dividends; or (c) the IRS has notified
                          me that I am no longer subject to backup
                          withholding; and
                      (3) Any other information provided on this form is true
                          and correct.
                      CERTIFICATION INSTRUCTIONS--You must cross out item (2)
                      above if you have been notified by the IRS that you are
                      subject to backup withholding because of underreporting
                      interest or dividends on your tax return and you have
                      not been notified by the IRS that you are no longer
                      subject to backup withholding.
                     ----------------------------------------------------------
 
                      Signature: ________________           PART 3--
 
 
                      Date: _____________________       Awaiting TIN [_]
 
 
NOTE: FAILURE TO COMPLETE AND RETURN THIS FORM MAY IN CERTAIN CIRCUMSTANCES
       RESULT IN BACKUP WITHHOLDING OF 31% OF ANY AMOUNTS PAID TO YOU PURSUANT
       TO THE EXCHANGE OFFER. PLEASE REVIEW THE ENCLOSED GUIDELINES FOR
       CERTIFICATION OF TAXPAYER IDENTIFICATION NUMBER ON SUBSTITUTE FORM W-9
       FOR ADDITIONAL DETAILS.
 
      YOU MUST COMPLETE THE FOLLOWING CERTIFICATE IF YOU CHECKED THE BOX
                     IN PART 3 OF THE SUBSTITUTE FORM W-9.
 
 
            CERTIFICATE OF AWAITING TAXPAYER IDENTIFICATION NUMBER
 
   I certify under penalties of perjury that a taxpayer identification number
 has not been issued to me, and either (1) I have mailed or delivered an
 application to receive a taxpayer identification number to the appropriate
 Internal Revenue Service Center or Social Security Administration Office or
 (2) I intend to mail or deliver an application in the near future. I
 understand that if I do not provide a taxpayer identification number by the
 time of payment, 31% of all payments made to me on account of the New
 Capital Securities shall be retained until I provide a taxpayer
 identification number to the Exchange Agent and that, if I do not provide my
 taxpayer identification number within 60 days, such retained amounts shall
 be remitted to the Internal Revenue Service as backup withholding and 31% of
 all reportable payments made to me thereafter will be withheld and remitted
 to the Internal Revenue Service until I provide a taxpayer identification
 number.
 
 -------------------------------------     ___________________, 1997
               Signature                          Date
 
 
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