THE JOHNS HOPKINS UNIVERSITY SCHOOL OF HYGIENE AND PuBLic HEALTH 616 NORTH WOLFE STREET BALTIMORE—5, MARYLAND DEPARTMENT OF BACTERIOLOGY Januzry 19, 1950 Dr. Joshua Lederberg Department of Genetics University of Wisconsin Madison, Wisconsin Dear Dr. Lederberg: if available, I would appreciate reprints of the following papers: Genetics, 322505-25, 19h7 YX Heredity, 2:145-98, 198 V7 Proc. Natl. Acad. Sci., 35:178-v4, 1949 5, Biol. Chem., 165:381-82, 196 “tun he — In your review in the Annual Review of Microbiology I hope it is the printer on paze 18 who is responsible for the conversion of a non-motile Bacillus mesentericus to a motile Baciilius anthracis and not some unlucky bacteriolosist. For years we have taught that typical anthrax is a non-motile organisn,. Sincerely yours, Co fame Carl Lamanna, Ph. D,