497J 1 c26445je497j.txt FORM 497J July 31, 2008 Securities and Exchange Commission 100 F Street, N.E. Washington, D.C. 20549 ATTN: Ms. Patsy Mengiste Document Control - EDGAR RE: RiverSource Government Income Series, Inc. RiverSource Short Duration U.S. Government Fund RiverSource U.S. Government Mortgage Fund Post-Effective Amendment No. 45 File Nos. 2-96512/811-4260 Accession Number: 0000950137-08-009754 Dear Ms. Mengiste: Pursuant to Rule 497(j) under the Securities Act of 1933, as amended, please accept this letter as certification that the prospectuses and Statement of Additional Information for the above-referenced funds do not differ from that contained in Registrant's Post-Effective Amendment No. 45 (Amendment). This Amendment was filed electronically on July 28, 2008. If you have any questions regarding this filing, please contact either Anna Butskaya at (612) 671-4993 or me at (612) 671-4321. Sincerely, /s/ Christopher O. Petersen ------------------------------------ Christopher O. Petersen Vice President and Group Counsel Ameriprise Financial, Inc.