SEARS MUNICIPAL TRUST INSURED LONG TERM SERIES 30, 497, 1994-04-07

SEARS MUNICIPAL TRUST INSURED LONG TERM SERIES 30
497, 1994-04-07

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                                                  Rule 497(d)

                DEAN WITTER SELECT MUNICIPAL TRUST
                     SUPPLEMENT TO PROSPECTUS
                           APRIL 4, 1994


            The record date for each series of the Dean Witter
  Select Municipal Trust has been changed to the 9th day of each
  month.  The distribution date remains unchanged.


            The prospectus included in the Registration Statement for
  Dean Witter Select Municipal Trust, Insured Long Term Series 30, 
  New York Portfolio Series 34 and Insured New Jersey Series 5
  is hereby incorporated by reference.