CHEMICAL CORPS BIOLOGICAL LABORATORIES VM DIVISION Camp Detrick, Frederick, Maryland 23 January 1953 Dr. Joshua Lederberg Department of Genetics University of Wisconsin Madison 6, Wisconsin Dear Dr. Lederberg: I want to thank you for the reprints which I have just received, JI appreciate very much having these for my files, and hope that you will keep my name on your mailing list. Best wishes - Sincerely yours, WILLIAM R, HINSHAW Chief, VM Division CmlC Biological Laboratories WRH/vf