December 11, 1973 Dr. Keith A. Kvenvolden Chief, Chemical Evolution Branch National Aeronautics and Space Administration Ames Research Center Moffett Field, California 94035 Dear Dr. Kvenvolden, Thank you for taking the time to write regarding your interest in a GC/HRMS facility to serve the Stanford University community. The number of positive responses Carl Djerassi and I received from our memorandum show that such a facility would serve many laboratories. Your positive response will help us in our planning for the proposed mass spectrometry service. Sincerely yours, Joshua Lederberg Professor of Genetics