DEPARTMENT OF BACTERIOLOGY AND IMMUNOLOGY HARVARD MEDICAL SCHOOL 23 SHATTUCK STREET BOSTON 15, MASSACHUSETTS October 27, 1958 Dr. Joshua Lederberg University of Wisconsin Department of Medial Genetics Genetics Building School of Medicine Madison 6, Wisconsin Dear Joshua: Thank you for sending me your itinerary. We shall expect you here at the department around noon on Thursday the 13th. We are all looking forward to seeing you. Sincerely, Um D. Davis