THE ROCKEFELLER UNIVERSITY 1230 YORK AVENUE NEW YORK, NY 10021 January 20, 1983 JOSHUA LEDERBERG PRESIDENT Dr. Ephraim Katzir The Weizmann Institute of Science Rehovot 76100 Israel Dear Ephraim: Your telegram of January 13th was awaiting me when I returned from a long trip this morning. I wish it were possible for me to attend but the week of June 7th coin- cides with our own convocation here in New York and I am afraid I must give that first priority. You know that I wish you every success and that I am very sorry I will not be able to be present in person. You sincerely, a Lederberg