RUTGERS UNIVERSITY The State University of New Jersey INSTITUTE OF MICROBIOLOGY NEW BRUNSWICK, NEW JERSEY May 6, 1955 CHARTER 7-1766 Dr. Joshua Lederberg Department of Genetics The University of Wisconsin College of Agriculture Madison 6, Wisconsin Dear Doctor Lederberg: We have received the shipment of reprints from you and are indeed grateful for this addition to our library, It is also nice of you to offer to keep the library on your regular mailing list for future publications, Again, thank you very much for your generous contribution, Sincerely, flotle Robert A, Day RAD: LC Librarian-Editor