LETTER OF TRANSMITTAL
                        TO TENDER SHARES OF COMMON STOCK
           (INCLUDING THE ASSOCIATED RIGHTS TO PURCHASE COMMON STOCK)
                                       OF
                               EDMARK CORPORATION
           PURSUANT TO THE OFFER TO PURCHASE DATED NOVEMBER 18, 1996
                                       BY
                            INDIGO ACQUISITION CORP.
                          A WHOLLY OWNED SUBSIDIARY OF
                  INTERNATIONAL BUSINESS MACHINES CORPORATION
 
  THE OFFER AND WITHDRAWAL RIGHTS WILL EXPIRE AT 12:00 MIDNIGHT, NEW YORK CITY
       TIME, ON MONDAY, DECEMBER 16, 1996, UNLESS THE OFFER IS EXTENDED.
 
              TO: CHASEMELLON SHAREHOLDER SERVICES, AS DEPOSITARY
                              Reorganization Dept.
 

                                                  
                     BY MAIL:                                  BY HAND OR OVERNIGHT DELIVERY:
                    PO Box 798                                          120 Broadway
                  Midtown Station                                        13th Floor
                New York, NY 10018                                   New York, NY 10271

 
                           BY FACSIMILE TRANSMISSION:
                                  201-329-8936
 
                         FOR CONFIRMATION OF FACSIMILE:
                                  201-296-4209
                                  201-296-4381
                            ------------------------
 
    DELIVERY OF THIS LETTER OF TRANSMITTAL TO AN ADDRESS, OR TRANSMISSION OF
INSTRUCTIONS VIA A FACSIMILE NUMBER, OTHER THAN AS SET FORTH ABOVE DOES NOT
CONSTITUTE A VALID DELIVERY.
 
    THE INSTRUCTIONS ACCOMPANYING THIS LETTER OF TRANSMITTAL SHOULD BE READ
CAREFULLY BEFORE THIS LETTER OF TRANSMITTAL IS COMPLETED.
 
    This Letter of Transmittal is to be used either if certificates for Shares
(as defined below) are to be forwarded herewith or, unless an Agent's Message
(as defined in Section 2 of the Offer to Purchase (as defined below)) is
utilized, if delivery of Shares is to be made by book-entry transfer to an
account maintained by the Depositary at a Book-Entry Transfer Facility as
defined in and pursuant to the procedures set forth in Section 2 of the Offer to
Purchase. Shareholders who deliver Shares by book-entry transfer are referred to
herein as "Book-Entry Shareholders" and other shareholders are referred to
herein as "Certificate Shareholders". Shareholders whose certificates for Shares
are not immediately available or who cannot deliver either the certificates for,
or a Book-Entry Confirmation (as defined in Section 2 of the Offer to Purchase)
with respect to, their Shares and all other documents required hereby to the
Depositary prior to the Expiration Date (as defined in Section 1 of the Offer to
Purchase) must tender their Shares in accordance with the guaranteed delivery
procedures set forth in Section 2 of the Offer to Purchase. See Instruction 2.
DELIVERY OF DOCUMENTS TO A BOOK-ENTRY TRANSFER FACILITY DOES NOT CONSTITUTE
DELIVERY TO THE DEPOSITARY.

    Holders of Shares will be required to tender one Right (as defined below)
for each Share tendered to effect a valid tender of such Share. Unless and until
the Distribution Date (as defined in the Offer to Purchase) occurs, the Rights
are represented by and transferred with the Shares. Accordingly, if the
Distribution Date does not occur prior to the Expiration Date (and under the
terms of the Rights Agreement (as defined below), a Distribution Date will not
occur by reason of the Offer (as defined below)), a tender of Shares will
constitute a tender of the associated Rights. If, however, pursuant to the
Rights Agreement or otherwise, a Distribution Date does occur, certificates
representing a number of Rights equal to the number of Shares being tendered
must be delivered to the Depositary in order for such Shares to be validly
tendered. If a Distribution Date has occurred, a tender of Shares without Rights
constitutes an agreement by the tendering shareholder to deliver certificates
representing a number of Rights equal to the number of Shares tendered pursuant
to the Offer to the Depositary within three trading days (as defined herein)
after the date such certificates are distributed. The Purchaser (as defined
herein) reserves the right to require that it receive such certificates prior to
accepting Shares for payment. Payment for Shares tendered and purchased pursuant
to the Offer will be made only after timely receipt by the Depositary of, among
other things, such certificates, if such certificates have been distributed to
holders of Shares. The Purchaser will not pay any additional consideration for
the Rights tendered pursuant to the Offer.

                                                                                  
                                       DESCRIPTION OF SHARES TENDERED
 

  NAME(S) AND ADDRESS(ES) OF REGISTERED OWNER(S)
   (PLEASE FILL IN, IF BLANK, EXACTLY AS NAME(S)
                     APPEAR(S)                                           SHARES TENDERED
                ON CERTIFICATE(S))                            (ATTACH ADDITIONAL LIST IF NECESSARY)
                                                                                  

                                                                          TOTAL NUMBER
                                                                            OF SHARES           NUMBER
                                                        CERTIFICATE      REPRESENTED BY        OF SHARES
                                                       NUMBER(S)(1)     CERTIFICATE(S)(1)     TENDERED(2)
                                                                                  
 
                                                       TOTAL SHARES
  (1) Need not be completed by Book-Entry Shareholders.
  (2) Unless otherwise indicated, it will be assumed that all Shares described above are being tendered. See
      Instruction 4.

 

        
/ /        CHECK HERE IF TENDERED SHARES ARE BEING DELIVERED BY BOOK-ENTRY TRANSFER MADE TO AN ACCOUNT
           MAINTAINED BY THE DEPOSITARY WITH A BOOK-ENTRY TRANSFER FACILITY AND COMPLETE THE FOLLOWING
           (ONLY PARTICIPANTS IN A BOOK-ENTRY TRANSFER FACILITY MAY DELIVER SHARES BY BOOK-ENTRY
           TRANSFER):
           Name of Tendering Institution
           Check box of Book-Entry Transfer Facility:
           / / The Depository Trust Company
           / / Midwest Securities Trust Company
           / / Philadelphia Depository Trust Company
           Account Number
           Transaction Code Number
 
/ /        CHECK HERE IF TENDERED SHARES ARE BEING DELIVERED PURSUANT TO A NOTICE OF GUARANTEED DELIVERY
           PREVIOUSLY SENT TO THE DEPOSITARY AND COMPLETE THE FOLLOWING:
           Name(s) of Registered Owner(s)
           Date of Execution of Notice of Guaranteed Delivery
           Name of Institution that Guaranteed Delivery
           If delivered by book-entry transfer check box:
           / / The Depository Trust Company
           / / Midwest Securities Trust Company
           / / Philadelphia Depository Trust Company
           Account Number
           Transaction Code Number


                      NOTE: SIGNATURES MUST BE PROVIDED BELOW
              PLEASE READ THE ACCOMPANYING INSTRUCTIONS CAREFULLY
Ladies and Gentlemen:
 
    The undersigned hereby tenders to Indigo Acquisition Corp., a Washington
corporation (the "Purchaser") which is a wholly owned subsidiary of
International Business Machines Corporation, a New York corporation, the above-
described shares of Common Stock, no par value (the "Shares"), of Edmark
Corporation, a Washington corporation (the "Company"), together with the
associated rights (the "Rights") to purchase Shares issued pursuant to the
Shareholder Rights Agreement dated as of November 29, 1995 between the Company
and ChaseMellon Shareholder Services, L.L.C. (as successor to First Interstate
Bank of Washington, N.A.), as rights agent (as amended, the "Rights Agreement"),
upon the terms and subject to the conditions set forth in the Purchaser's Offer
to Purchase dated November 18, 1996 (the "Offer to Purchase"), and this Letter
of Transmittal (which, together with any amendments or supplements thereto or
hereto, collectively constitute the "Offer"), receipt of which is hereby
acknowledged. Unless the context otherwise requires, all references to Shares
include the associated Rights.
 
    Upon the terms of the Offer, subject to, and effective upon, acceptance for
payment of, and payment for, the Shares tendered herewith in accordance with the
terms of the Offer, the undersigned hereby sells, assigns and transfers to, or
upon the order of, the Purchaser all right, title and interest in and to all the
Shares that are being tendered hereby (and any and all other Shares or other
securities or rights issued or issuable in respect thereof on or after November
12, 1996), and irrevocably constitutes and appoints ChaseMellon Shareholder
Services, L.L.C. (the "Depositary"), the true and lawful agent and
attorney-in-fact of the undersigned, with full power of substitution (such power
of attorney being deemed to be an irrevocable power coupled with an interest),
to the full extent of the undersigned's rights with respect to such Shares (and
any such other Shares or securities or rights), (a) to deliver certificates for
such Shares (and any such other Shares or securities or rights) or transfer
ownership of such Shares (and any such other Shares or securities or rights) on
the account books maintained by a Book-Entry Transfer Facility together, in any
such case, with all accompanying evidences of transfer and authenticity to, or
upon the order of, the Purchaser, (b) to present such Shares (and any such other
Shares or securities or rights) for transfer on the Company's books and (c) to
receive all benefits and otherwise exercise all rights of beneficial ownership
of such Shares (and any such other Shares or securities or rights), all in
accordance with the terms of the Offer.
 
    The undersigned hereby represents and warrants that the undersigned has full
power and authority to tender, sell, assign and transfer the tendered Shares
(and any and all other Shares or other securities or rights issued or issuable
in respect of such Shares on or after November 12, 1996) and, when the same are
accepted for payment by the Purchaser, the Purchaser will acquire good title
thereto, free and clear of all liens, restrictions, claims and encumbrances, and
the same will not be subject to any adverse claim. The undersigned will, upon
request, execute any additional documents deemed by the Depositary or the
Purchaser to be necessary or desirable to complete the sale, assignment and
transfer of the tendered Shares (and any and all such other Shares or securities
or rights).
 
    All authority conferred or agreed to be conferred pursuant to this Letter of
Transmittal shall be binding upon the successors, assigns, heirs, executors,
administrators and legal representatives of the undersigned and shall not be
affected by, and shall survive, the death or incapacity of the undersigned.
Except as stated in the Offer to Purchase, this tender is irrevocable.

    The undersigned hereby irrevocably appoints Lee A. Dayton, Donald D.
Westfall and Archie W. Colburn, and each of them, and any other designees of the
Purchaser, the attorneys-in-fact and proxies of the undersigned, each with full
power of substitution, to vote at any annual, special or adjourned meeting of
the Company's shareholders or otherwise in such manner as each such
attorney-in-fact and proxy or his substitute shall in his sole discretion deem
proper with respect to, to execute any written consent concerning any matter as
each such attorney-in-fact and proxy or his substitute shall in his sole
discretion deem proper with respect to, and to otherwise act as each such
attorney-in-fact and proxy or his substitute shall in his sole discretion deem
proper with respect to, the Shares tendered hereby that have been accepted for
payment by the Purchaser prior to the time any such action is taken and with
respect to which the undersigned is entitled to vote (and any and all other
Shares or other securities or rights issued or issuable in respect of such
Shares on or after November 12, 1996). This appointment is effective when, and
only to the extent that, the Purchaser accepts for payment such Shares as
provided in the Offer to Purchase. This power of attorney and proxy are
irrevocable and are granted in consideration of the acceptance for payment of
such Shares in accordance with the terms of the Offer. Upon such acceptance for
payment, all prior powers of attorney, proxies and consents given by the
undersigned with respect to such Shares (and any such other Shares or securities
or rights) will, without further action, be revoked and no subsequent powers of
attorney, proxies, consents or revocations may be given (and, if given, will not
be deemed effective) by the undersigned.
 
    The undersigned understands that the valid tender of Shares pursuant to any
of the procedures described in Section 2 of the Offer to Purchase and in the
Instructions hereto will constitute a binding agreement between the undersigned
and the Purchaser upon the terms and subject to the conditions of the Offer.
 
    Unless otherwise indicated herein under "Special Payment Instructions",
please issue the check for the purchase price and/or return any certificates for
Shares not tendered or accepted for payment in the name(s) of the registered
holder(s) appearing under "Description of Shares Tendered". Similarly, unless
otherwise indicated under "Special Delivery Instructions", please mail the check
for the purchase price and/or return any certificates for Shares not tendered or
accepted for payment (and accompanying documents, as appropriate) to the
address(es) of the registered holder(s) appearing under "Description of Shares
Tendered". In the event that both "Special Delivery Instructions" and "Special
Payment Instructions" are completed, please issue the check for the purchase
price and/or return any certificates for Shares not tendered or accepted for
payment (and any accompanying documents, as appropriate) in the name of, and
deliver such check and/or return such certificates (and any accompanying
documents, as appropriate) to, the person or persons so indicated. Please credit
any Shares tendered herewith by book-entry transfer that are not accepted for
payment by crediting the account at the Book-Entry Transfer Facility designated
above. The undersigned recognizes that the Purchaser has no obligation pursuant
to "Special Payment Instructions" to transfer any Shares from the name of the
registered holder thereof if the Purchaser does not accept for payment any of
the Shares so tendered.
 
/ / CHECK HERE IF ANY OF THE CERTIFICATES REPRESENTING SHARES THAT YOU OWN HAVE
    BEEN LOST OR DESTROYED AND SEE INSTRUCTION 11.
Number of Shares represented by the lost or destroyed certificates:
___________________

                          SPECIAL PAYMENT INSTRUCTIONS
                         (SEE INSTRUCTIONS 5, 6 AND 7)
 
To be completed ONLY if certificates for Shares not tendered or not accepted for
payment and/or the check for the purchase price of Shares accepted for payment
are to be issued in the name of someone other than the undersigned.
 
Issue: / / Check
 
       / / Certificate(s) to:
Name ___________________________________________________________________________
 
                                 (PLEASE PRINT)
Address ________________________________________________________________________
________________________________________________________________________________
 
                               (INCLUDE ZIP CODE)
________________________________________________________________________________
 
              (EMPLOYER IDENTIFICATION OR SOCIAL SECURITY NUMBER)
 
                         SPECIAL DELIVERY INSTRUCTIONS
 
                         (SEE INSTRUCTIONS 5, 6 AND 7)
 
To be completed ONLY if certificates for Shares not tendered or not accepted for
payment and/or the check for the purchase price of Shares accepted for payment
are to be sent to someone other than the undersigned, or to the undersigned at
an address other than that above.
 
Mail: / / Check
 
      / / Certificate(s) to:
 
Name ___________________________________________________________________________
 
                                 (PLEASE PRINT)
 
Address ________________________________________________________________________
 
________________________________________________________________________________
 
                               (INCLUDE ZIP CODE)
 
________________________________________________________________________________
 
              (EMPLOYER IDENTIFICATION OR SOCIAL SECURITY NUMBER)

 
                                   SIGN HERE
                   (ALSO COMPLETE SUBSTITUTE FORM W-9 BELOW)
 
             ______________________________________________________
 
             ______________________________________________________
                        (Signature(s) of Shareholder(s))
             Dated: ________________, 1996
 
                 (Must be signed by registered holder(s) as name(s)
             appear(s) on the certificate(s) for the Shares or on a
             security position listing or by person(s) authorized
             to become registered holder(s) by certificates and
             documents transmitted herewith. If signature is by
             trustees, executors, administrators, guardians,
             attorneys-in-fact, officers of corporations or others
             acting in a fiduciary or representative capacity,
             please provide the following information and see
             Instruction 5.)
             Name(s) ______________________________________________
             ______________________________________________________
 
                                 (Please Print)
             Capacity (Full Title) ________________________________
             Address ______________________________________________
             ______________________________________________________
 
                               (Include Zip Code)
             Daytime Area Code and Telephone No. __________________
 
             Employer Identification or
             Social Security Number _______________________________
 
                                     (See Substitute Form W-9)
 
                           GUARANTEE OF SIGNATURE(S)
                    (IF REQUIRED--SEE INSTRUCTIONS 1 AND 5)
             ______________________________________________________
 
                              Authorized Signature
             ______________________________________________________
 
                              Name (Please Print)
             ______________________________________________________
 
                                  Name of Firm
             ______________________________________________________
 
                                    Address
             ______________________________________________________
 
                               (Include Zip Code)
             ______________________________________________________
 
                      Daytime Area Code and Telephone No.
             Dated: ________________, 1996

                                  INSTRUCTIONS
             FORMING PART OF THE TERMS AND CONDITIONS OF THE OFFER
 
    1. GUARANTEE OF SIGNATURES. No signature guarantee is required on this
Letter of Transmittal (a) if this Letter of Transmittal is signed by the
registered holder(s) (which term, for purposes of this Section, includes any
participant in any of the Book-Entry Transfer Facilities' systems whose name
appears on a security position listing as the owner of the Shares) of Shares
tendered herewith, unless such registered holder(s) has completed either the box
entitled "Special Payment Instructions" or the box entitled "Special Delivery
Instructions" on this Letter of Transmittal or (b) if such Shares are tendered
for the account of a financial institution (including most commercial banks,
savings and loan associations and brokerage houses) that is a participant in the
Security Transfer Agents Medallion Program, the New York Stock Exchange
Medallion Signature Guarantee Program or the Stock Exchange Medallion Program
(such participant, an "Eligible Institution"). In all other cases, all
signatures on this Letter of Transmittal must be guaranteed by an Eligible
Institution. See Instruction 5.
 
    2. REQUIREMENTS OF TENDER. This Letter of Transmittal is to be completed by
shareholders either if certificates are to be forwarded herewith or, unless an
Agent's Message (as defined below) is utilized, if delivery of Shares is to be
made pursuant to the procedures for book-entry transfer set forth in Section 2
of the Offer to Purchase. For a shareholder validly to tender Shares pursuant to
the Offer, either (a) a Letter of Transmittal (or facsimile thereof), properly
completed and duly executed, together with any required signature guarantees,
or, in the case of a book-entry transfer, an Agent's Message, and any other
required documents, must be received by the Depositary at one of its addresses
set forth herein prior to the Expiration Date and either certificates for
tendered Shares must be received by the Depositary at one of such addresses or
Shares must be delivered pursuant to the procedures for book-entry transfer set
forth herein (and a Book-Entry Confirmation received by the Depositary), in each
case prior to the Expiration Date, or (b) the tendering shareholder must comply
with the guaranteed delivery procedures set forth below and in Section 2 of the
Offer to Purchase.
 
    Shareholders whose certificates for Shares are not immediately available or
who cannot deliver their certificates and all other required documents to the
Depositary or complete the procedures for book-entry transfer prior to the
Expiration Date may tender their Shares by properly completing and duly
executing the Notice of Guaranteed Delivery pursuant to the guaranteed delivery
procedures set forth in Section 2 of the Offer to Purchase. Pursuant to such
procedures, (a) such tender must be made by or through an Eligible Institution,
(b) a properly completed and duly executed Notice of Guaranteed Delivery,
substantially in the form provided by the Purchaser, must be received by the
Depositary prior to the Expiration Date and (c) the certificates for all
tendered Shares in proper form for transfer (or a Book-Entry Confirmation with
respect to all such Shares), together with a Letter of Transmittal (or facsimile
thereof), properly completed and duly executed, with any required signature
guarantees, or, in the case of a book-entry transfer, an Agent's Message, and
any other required documents, must be received by the Depositary within three
trading days after the date of execution of such Notice of Guaranteed Delivery
as provided in Section 2 of the Offer to Purchase. A "trading day" is any day on
which the Nasdaq National Market operated by the National Association of
Securities Dealers, Inc. is open for business.
 
    The term "Agent's Message" means a message transmitted by a Book-Entry
Transfer Facility to, and received by, the Depositary and forming a part of a
Book-Entry Confirmation which states that such Book-Entry Transfer Facility has
received an express acknowledgement from the participant in such Book-Entry
Transfer Facility tendering the Shares that such participant has received and
agrees to be bound by the terms of the Letter of Transmittal and that the
Purchaser may enforce such agreement against the participant.

    THE METHOD OF DELIVERY OF SHARES, THE LETTER OF TRANSMITTAL AND ALL OTHER
REQUIRED DOCUMENTS, INCLUDING DELIVERY THROUGH ANY BOOK-ENTRY TRANSFER FACILITY,
IS AT THE ELECTION AND RISK OF THE TENDERING SHAREHOLDER. SHARES WILL BE DEEMED
DELIVERED ONLY WHEN ACTUALLY RECEIVED BY THE DEPOSITARY (INCLUDING, IN THE CASE
OF A BOOK-ENTRY TRANSFER, BY BOOK-ENTRY CONFIRMATION). IF DELIVERY IS BY MAIL,
REGISTERED MAIL WITH RETURN RECEIPT REQUESTED, PROPERLY INSURED, IS RECOMMENDED.
IN ALL CASES, SUFFICIENT TIME SHOULD BE ALLOWED TO ENSURE TIMELY DELIVERY.
 
    No alternative, conditional or contingent tenders will be accepted and no
fractional Shares will be purchased. All tendering shareholders, by execution of
this Letter of Transmittal (or facsimile hereof), waive any right to receive any
notice of the acceptance of their Shares for payment.
 
    3. INADEQUATE SPACE. If the space provided herein is inadequate, the
certificate numbers and/or the number of Shares should be listed on a separate
schedule attached hereto.
 
    4. PARTIAL TENDERS (APPLICABLE TO CERTIFICATE SHAREHOLDERS ONLY). If fewer
than all the Shares evidenced by any certificate submitted are to be tendered,
fill in the number of Shares that are to be tendered in the box entitled "Number
of Shares Tendered". In any such case, new certificate(s) for the remainder of
the Shares that were evidenced by the old certificate(s) will be sent to the
registered holder, unless otherwise provided in the appropriate box on this
Letter of Transmittal, as soon as practicable after the acceptance for payment
of, and payment for, the Shares tendered herewith. All Shares represented by
certificates delivered to the Depositary will be deemed to have been tendered
unless otherwise indicated.
 
    5. SIGNATURES ON LETTER OF TRANSMITTAL, STOCK POWERS AND ENDORSEMENTS. If
this Letter of Transmittal is signed by the registered holder of the Shares
tendered hereby, the signature must correspond with the name as written on the
face of the certificate(s) without any change whatsoever.
 
    If any of the Shares tendered hereby are owned of record by two or more
joint owners, all such owners must sign this Letter of Transmittal.
 
    If any tendered Shares are registered in different names on several
certificates, it will be necessary to complete, sign and submit as many separate
Letters of Transmittal as there are different registrations of certificates.
 
    If this Letter of Transmittal or any certificates or stock 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 proper evidence satisfactory to the
Purchaser of their authority so to act must be submitted.
 
    When this Letter of Transmittal is signed by the registered owner(s) of the
Shares listed and transmitted hereby, no endorsements of certificates or
separate stock powers are required unless payment is to be made to, or
certificates for Shares not tendered or accepted for payment are to be issued
to, a person other than the registered owner(s). Signatures on such certificates
or stock powers 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 certificates listed, the certificates must be
endorsed or accompanied by appropriate stock powers, in either case signed
exactly as the name or names of the registered owner or owners appear on the
certificates. Signatures on such certificates or stock powers must be guaranteed
by an Eligible Institution.

    6. STOCK TRANSFER TAXES. The Purchaser will pay any stock transfer taxes
with respect to the transfer and sale of Shares to it or its order pursuant to
the Offer. If, however, payment of the purchase price is to be made to, or if
certificates for Shares not tendered or accepted for payment are to be
registered in the name of, any person(s) other than the registered owner(s), or
if tendered certificates are registered in the name(s) of any person(s) other
than the person(s) signing this Letter of Transmittal, the amount of any stock
transfer taxes (whether imposed on the registered owner(s) or such person(s))
payable on account of the transfer to such person(s) will be deducted from the
purchase price unless satisfactory evidence of the payment of such taxes or
exemption therefrom is submitted.
 
    EXCEPT AS PROVIDED IN THIS INSTRUCTION 6, IT WILL NOT BE NECESSARY FOR
TRANSFER TAX STAMPS TO BE AFFIXED TO THE CERTIFICATES LISTED IN THIS LETTER OF
TRANSMITTAL.
 
    7. SPECIAL PAYMENT AND DELIVERY INSTRUCTIONS. If a check is to be issued in
the name of, and/or certificates for Shares not accepted for payment are to be
returned to, a person other than the signer of this Letter of Transmittal or if
a check is to be sent and/or such certificates are to be returned to a person
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.
 
    8. WAIVER OF CONDITIONS. The Purchaser reserves the absolute right in its
sole discretion to waive any of the specified conditions of the Offer, in whole
or in part, in the case of any Shares tendered.
 
    9. 31% BACKUP WITHHOLDING. In order to avoid backup withholding of Federal
income tax on payments of cash pursuant to the Offer, a shareholder surrendering
Shares in the Offer must, unless an exemption applies, provide the Depositary
with such shareholder's correct taxpayer identification number ("TIN") on
Substitute Form W-9 below in this Letter of Transmittal and certify under
penalties of perjury that such TIN is correct and that such shareholder is not
subject to backup withholding. If a shareholder does not provide such
shareholder's correct TIN or fails to provide the certifications described
above, the Internal Revenue Service (the "IRS") may impose a $50 penalty on such
shareholder and payment of cash to such shareholder pursuant to the Offer may be
subject to backup withholding of 31%.
 
    Backup withholding is not an additional income tax. Rather, the amount of
the backup withholding can be credited against the U.S. federal income tax
liability of the person subject to the backup withholding, provided that the
required information is given to the IRS. If backup withholding results in an
overpayment of tax, a refund can be obtained by the shareholder upon filing an
income tax return.
 
    The shareholder is required to give the Depositary the TIN (i.e., social
security number or employer identification number) of the record owner of the
Shares. If the Shares are held 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.
 
    The box in Part 3 of the Substitute Form W-9 may be checked if the tendering
shareholder 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 3 is checked, the
shareholder 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 3 is checked and the Certificate of
Awaiting Taxpayer Identification Number is completed, the Depositary will
withhold 31% on all payments made prior to the time a properly certified TIN is
provided to the Depositary. However, such amounts will be refunded to such
shareholder if a TIN is provided to the Depositary within 60 days.
 
    Certain shareholders (including, among others, all corporations and certain
foreign individuals and entities) are not subject to backup withholding.
Noncorporate foreign shareholders should complete and sign the main signature
form and a Form W-8, Certificate of Foreign Status, a copy of which may be
obtained from the Depositary, in order to avoid backup withholding. See the
enclosed "Guidelines for Certification of Taxpayer Identification Number on
Substitute Form W-9" for more instructions.

    10. REQUESTS FOR ASSISTANCE OR ADDITIONAL COPIES. Questions and requests for
assistance or additional copies of the Offer to Purchase, this Letter of
Transmittal, the Notice of Guaranteed Delivery and the Guidelines for
Certification of Taxpayer Identification Number on Substitute Form W-9 may be
directed to the Information Agent at its address set forth below.
 
    11. LOST, DESTROYED OR STOLEN CERTIFICATES. If any certificate representing
Shares has been lost, destroyed or stolen, the shareholder should promptly
notify the Depositary by checking the box immediately preceding the special
payment/special delivery instructions and indicating the number of Shares lost.
The shareholder will then be instructed as to the steps that must be taken in
order to replace the certificate. This Letter of Transmittal and related
documents cannot be processed until the procedures for replacing lost or
destroyed certificates have been followed.
 
    IMPORTANT: THIS LETTER OF TRANSMITTAL (OR FACSIMILE HEREOF), TOGETHER WITH
ANY REQUIRED SIGNATURE GUARANTEES, OR, IN THE CASE OF A BOOK-ENTRY TRANSFER, AN
AGENT'S MESSAGE, AND ANY OTHER REQUIRED DOCUMENTS, MUST BE RECEIVED BY THE
DEPOSITARY PRIOR TO THE EXPIRATION DATE AND EITHER CERTIFICATES FOR TENDERED
SHARES MUST BE RECEIVED BY THE DEPOSITARY OR SHARES MUST BE DELIVERED PURSUANT
TO THE PROCEDURES FOR BOOK-ENTRY TRANSFER, IN EACH CASE PRIOR TO THE EXPIRATION
DATE, OR THE TENDERING SHAREHOLDER MUST COMPLY WITH THE PROCEDURES FOR
GUARANTEED DELIVERY.

 

                                                                                     
                                 PAYER'S NAME: CHASEMELLON SHAREHOLDER SERVICES, L.L.C.
SUBSTITUTE                      PART 1--PLEASE PROVIDE YOUR TIN IN THE BOX AT RIGHT AND
FORM W-9                        CERTIFY BY SIGNING AND DATING BELOW                        Social Security Number(s)
                                                                                           OR
                                                                                              Employer Identification
                                                                                                     Number(s)
                                PART 2--Certification--Under penalties of perjury, I                  Part 3--
                                certify that:                                                       Awaiting TIN
                                (1) the number shown on this form is my correct Taxpayer                / /
                                    Identification Number (or I am waiting for a number               Part 4--
                                    to be issued to me) and                                          Exempt TIN
                                (2) I am not subject to backup withholding because (a) I                / /
                                am exempt from backup withholding or (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.
                                Certification instructions--You must cross out item (2) in Part 2 above if you have been
                                notified by the IRS that you are subject to backup withholding because of under reporting
                                interest or dividends on your tax returns. However, if after being notified by the IRS
                                that you were subject to backup withholding you received another notification from the
                                IRS stating that you are no longer subject to backup withholding, do not cross out such
                                item (2). If you are exempt from backup withholding, check the box in Part 4 above.
Department of the Treasury
Internal Revenue Service
Payer's Request for Taxpayer
Identification Number (TIN)
 
SIGNATURE  DATE , 1996

 
YOU MUST COMPLETE THE FOLLOWING CERTIFICATE IF YOU CHECKED THE BOX IN PART 3 OF
                              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 (a) 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 (b)
I intend to mail or deliver an application in the near future. I understand
that, if I do not provide a taxpayer identification number to the Depositary,
31% of all reportable payments made to me will be withheld, but will be refunded
if I provide a certified taxpayer identification number within 60 days.
 

                                                           
                                                              , 1996
                         Signature                                                        Date

 
NOTE: FAILURE TO COMPLETE AND RETURN THIS SUBSTITUTE FORM W-9 MAY RESULT IN
      BACKUP WITHHOLDING OF 31% OF ANY PAYMENTS MADE TO YOU PURSUANT TO THE
      OFFER. PLEASE REVIEW THE ENCLOSED GUIDELINES FOR CERTIFICATION OF TAXPAYER
      IDENTIFICATION NUMBER ON SUBSTITUTE FORM W-9 FOR ADDITIONAL INFORMATION.

                    THE INFORMATION AGENT FOR THE OFFER IS:
 
                               Morrow & Co., Inc.
 
                                909 Third Avenue
                                   20th Floor
                               New York, NY 10022
                                 (212) 754-8000
                            Toll Free (800) 566-9061
 
                           Banks and Brokerage Firms
                                  please call:
                                 (800) 662-5200