THE ROCKEFELLER INSTITUTE A Graduate University and Research Center NEW YORK, N.Y. 10021 / July 12, 1965 To U.S. Nobel laureates in Science: Enclosed is a copy of a letter just re- ceived from Senator Gruening. The postponement gives us more time to prepare adequately. I hope, therefore, that all of you who have not yet had the opportunity to respond to my earlier letter dated July 7 will be able to do so soon, So that plans for the hearing can be made, I would appreciate your letting me know if you plan to submit a statement. In order to attempt to set a date on which, hopefully, some of you might testify in person, could you also indicate any dates between July 20 and August 15 on which you could attend a hearing in Washington. I will try to work out the best date, and inform possible participants as soon as possible. s My thanks to all of you for your help. Sincerely yours, E. L. Tatum 0 te Fc thd wp — AK for Ale of ‘ Conr ton JUL 14 1965 Wale