Oct. 4, 2005


Securities and Exchange Commission
450 Fifth Street, N.W.
Washington, DC  20549-1004

ATTN:      Ms. Patsy Mengiste
           Document Control - EDGAR

Re:      AXP Money Market Series, Inc.
              RiverSource Cash Management Fund
         Post-Effective Amendment No. 60
         File No. 2-54516/811-2591

Dear Ms. Mengiste:

Pursuant to Rule 497(j) under the Securities Act of 1933, as amended, please
accept this letter as certification that the prospectus and Statement of
Additional Information for the above referenced fund does not differ from that
contained in the Registrant's Post-Effective Amendment No. 60 (Amendment). This
Amendment was filed electronically on Sept. 30, 2005.

If you have any questions, please contact either me at (612) 671-4321 or Heidi
Brommer at (612) 671-2403.

Sincerely,



/s/ Christopher O. Petersen
----------------------------
    Christopher O. Petersen
    Counsel
    Ameriprise Financial, Inc.