Rule 497(d)
DEAN WITTER SELECT MUNICIPAL TRUST
INSURED CALIFORNIA SERIES 47
INSURED NEW YORK SERIES 7
LONG TERM PORTFOLIO SERIES 113
SUPPLEMENT TO PROSPECTUS
DATED JANUARY 16, 1996
The sales charge in the secondary market will
reflect different rates depending upon the maturities of the
various underlying Securities as follows:
(as percent of bid (as percent of
Time to Maturity side evaluation) Offering Price
Less than 1 year 0% 0%
Over 1 year to 2 years 0.756% 0.75%
Over 2 years to 3 years 1.523% 1.50%
Over 3 years to 6 years 2.564% 2.50%
Over 6 years to 10 years 3.627% 3.50%
Over 10 years to 14 years 4.712% 4.50%
15 years and over 5.820% 5.50%
The prospectus included in the Registration Statement for
Dean Witter Select Municipal Trust, Insured California Series 47,
Insured New York Series 7 and Long Term Portfolio Series 113 is
hereby incorporated by reference.
