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Part II                                                               Exhibit 15
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               Letter re: Unaudited Interim Financial Information


CVS Corporation
Woonsocket, Rhode Island

Board of Directors:

Re:    Registration Statements Numbers 33-40251, 33-17181, 2-97913, 2-77397 and
       2-53766 on Form S-8 and 333-24163 on Form S-4 and 333-31449 on Form S-3

     With respect to the subject registration statements, we acknowledge our
awareness of the use therein of our report dated July 30, 1997 related to our
review of interim financial information.

     Pursuant to Rule 436(c) under the Securities Act of 1933, such report is
not considered a part of a registration statement prepared or certified by an
accountant or a report prepared or certified by an accountant within the meaning
of sections 7 and 11 of the Act.

     Very truly yours,


/s/ KPMG Peat Marwick LLP
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KPMG PEAT MARWICK LLP

Providence, Rhode Island
August 7, 1997





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