SELIGMAN CASH MANAGEMENT FUND INC, 497J, 1997-05-01

SELIGMAN CASH MANAGEMENT FUND INC
497J, 1997-05-01

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                             J. & W. SELIGMAN & CO.
                                  INCORPORATED




                                          May 1, 1997



Securities and Exchange Commission
Judiciary Plaza
450 Fifth Street, NW
Washington, DC  20549

Re:   Seligman Cash Management Fund, Inc.
      File Nos. 2-56805 and 811-2650

Dear Sir or Madam:

      Pursuant to Rule 497(j) under the Securities Act of 1933, I hereby certify
that the Prospectus and Statement of Additional Information that would have been
filed   pursuant  to  Rule  497(c)  does  not  differ  from  that  contained  in
Post-Effective  Amendment  No. 30 to the Fund's  Registration  Statement on Form
N-1A filed  electronically  with the Securities and Exchange Commission on April
29, 1997.

      If you have any  questions,  please  do not  hesitate  to call me at (212)
850-1426.

                                          Very truly yours,



                                          Maureen A. Coleman
                                          Assistant Vice President
                                          Law & Regulation











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