September 19, 1949. Dr. H. J. Huller, Dept. Zoology, Indiana University, Bloomington, Indiana. Dear Dr. Muller : While organizing an elementary course on heredity in misroorganiems, it occurred to me that your Pilgrim Lecture "The Gehe " provided an excellent account of some of the general considerations that underly genetics. I would like to use it for an assigned reading, but we do not have enough copies of the journal (in the bindery) or of the reprints to use it in this way. If you still have available one or two mimeographed reprints that we could use for this purpose, I would be very grateful to receive them. With best regards, Yours sincerely, Josmua Lederberg, Assistant Professor of Genetics.