INDIANA UNIVERSITY BLOOMINGTON, INDIANA DEPARTMENT OF BACTERIOLOGY April 14, 1949 Dr. Joshua Lederberg Department of Genetics The University of Wisconsin Madison, Wisconsin Dear Joshua: I have just been informed that contributors receive only twenty-five copies of their articles in the Manuals of Medical Research plus one free copy of the volume. If you are particularly interested in receiving more copies, I shall make an effort to persuade the publishers to give you mOYe ยป The length that you suggest for your contri- bution seems to be quite reasonable, and, if needed, you could use more space, All the things you suggested to include appear to be very useful material, Best regards, SE karla S, &, Luria, vb