NATIONAL ACADEMY OF SCIENCES OFFICE OF THE PRESIDENT 2101 CONSTITUTION AVENUE WASHINGTON, O.C. 20418 June 6, 1979 Dr. Joshua Lederberg President Rockefeller University 1230 York Avenue New York, New York 10021 Dear Josh: Events conspire to keep me from your Board meetings. I shall be in London on 6 June at a joint meeting of the NAS and the Royal Society, hence absent from the June meeting. Unfortunately, the change in date from January 15, 1980 to February 15 again catches me out of the country, this time at the Scientific Forum called for in the final act of the Helsinki Accords, for which Secretary Vance has asked me to lead the American Delegation. Do come by when next life brings you to Washington. Sincerely yours, ort ler nee Philip Handler President