pons, KOC SiR THE ROCKEFELLER UNIVERSITY 1230 YORK AVENUE NEW YORK, NY 10021 JOSHUA LEDERBERG September 12, 1979 PRESIDENT Mrs. Peyton Rous 122 East 82 Street New York, New York 10028 Dear Mrs. Rous: On October 5, the University is holding a colloquium to mark the 100th anniversary of the birth of Dr. Rous. The speakers will be Lewis Thomas, Howard Temin, and David Baltimore, and I am sure there will be informal remarks from former associates and friends of Dr. Rous in the audience. This tribute to one of the University's most honored and fondly remembered scientists would not be complete without the participation of the one person who most closely shared the joys of his career and his life. I take great pleasure in inviting you to be the guest of the University at both the colloquium (3-5 p.m., Caspary Auditorium) and an informal lurtcheon for the speakers and former associates of Dr. Rous (12:30 p.m., Cohn Library). I look forward to greeting you. Cordially, Joshua Lederberg