PUTNAM INVESTMENTS January 28, 1994 U.S. Securities and Exchange Commission 450 Fifth Street, N.W. Washington, D.C. 20549 Re: Putnam Corporate Asset Trust - CIK No. 0000730178 Request for Withdrawal of Amendment to Registration Statement on Form 485b24e; File No. 2-545091 Ladies and Gentlemen: Due to a technical problem with the SEC's 485b24e Form type, Putnam Managed Income Trust Post-effective Amendment Number 10 was inadvertently filed under Putnam Corporate Asset Trust this morning at 9:11 am. The Accession number for this filing is 0000764110-94-000002. We request withdrawal of this amendment pursuant to Rule 477(a) under the Securities Act of 1933. Sincerely, Karen R. Kay Senior Vice President and Assistant General Counsel Putnam Investments, Inc.