SEARS MUNICIPAL TRUST INSURED INTERMEDIATE TERM SERIES 13, 497J, 1994-10-20

SEARS MUNICIPAL TRUST INSURED INTERMEDIATE TERM SERIES 13
497J, 1994-10-20

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                                             Rule 497(j)
                                             Reg. No. 33-24776
                                             Reg. No. 33-47083    
                              

Pursuant to Rule 497 (j) promulgated under the Securities Act of
1933, the Registrant, Dean Witter Select Municipal Trust, Insured
Intermediate Term Series 13 and Long Term Portfolio Series 122,
hereby certifies as follows:

1)   the form of prospectus that would have been filed under
     paragraph (b) of Rule 497 does not differ from that
     contained in the most recent amendment to the registration
     statement, and

2)   the text of the said amendment to the registration statement
     has been filed electronically.


                    DEAN WITTER SELECT MUNICIPAL TRUST,
                    INSURED INTERMEDIATE TERM SERIES 13
                    LONG TERM PORTFOLIO SERIES 122
                              
                    By:  Dean Witter Reynolds Inc.
                         (Depositor)


                         Michael D. Browne
                         Michael D. Browne
                         Authorized Signatory