DEPARTMENT OF HEALTH, EDUCATION, ANO WELFARE PUBLIC HEALTH SERVICE NATIONAL INSTITUTES OF HEALTH BETHESDA, MD. 20014 Dr. Joshua Lederberg President The Rockefeller University... 1230 York Avenue New York, New York 10021 Dear Josh: Thank you very much for your recent letter reappointing me as a member of the adjunct faculty in Tne Rockefeller University for a period of one year beginning July 1, 1981. I appreciate the recognition and the opportunity this gives to keep up my contacts with my friends at Rockefeller University. With best regards. Yours sincerely, Richard M. Krause, M.D. Director, National Institute of Allergy and Infectious Diseases