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                                  Memorandum


                         Nuveen Unit Trusts, Series 93
                              File No. 333-36094

     The Prospectus and the Indenture filed with Amendment No. 2 to the
Registration Statement on Form S-6 have been revised to reflect information
regarding the deposit of securities on July 6, 2000 and to set forth certain
data based thereon. In addition, there are a number of other changes from the
Prospectus as originally filed.

     An effort has been made to set forth below certain of the changes and also
to reflect all changes by marking the Prospectus submitted with the Amendment.

                                   Form S-6

     Facing Sheet. The amendment number is now provided.

                                The Prospectus

     Part A.  The date of the Prospectus and CUSIP numbers
have been updated.

     Part A.  The "Fees and Expenses" section, including applicable footnotes,
has been updated.

     Part A.  The securities selected for the Trust(s) have been updated.

     Part A.  The period over which the deferred sales charge will be collected
has been updated.

     Part A.  The Schedule of Investments and the related footnotes have been
updated.

     Part A.  The Statement(s) of Condition and the related footnotes have been
updated.

     Part A.  The Report of Independent Public Accountants has been updated.

     Part B.  Page 1. The date of Part B of the Prospectus has been
updated.

     Part B.  Back Cover. The date of Part B of the Prospectus has been
updated.

     Information Supplement. The date of the supplement and the series number
have been updated.


                              /s/ Chapman and Cutler

                              Chapman and Cutler

Chicago, Illinois
July 6, 2000



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