STANFORD UNIVERSITY MEDICAL CENTER STANFORD, CALIFORNIA 94305 ยข (415) 321-1200 Exr. 5785 STANFORD UNIVERSITY SCHOOL OF MEDICINE Department of Anesthesia November 30, 1973 Professor Joshua Lederberg Department of Genetics School of Medicine Stanford University Stanford, California 94305 Dear Dr. Lederberg: Thank you for including my laboratories in the group which could be served by a GC/HRMS facility. As you know, Dr. Cohen and I have our own GC/MS/ Computer System. Our use of the pro- posed facility would be limited to those times when it is necessary to use high resolution ot identify a metabolite. I would estimate a need for three GC/HRMS and three HRMS Spectra per year. My work is entirely supported by the National Institutes of Health. Sincerel Janes R Trcdlt. Au James R. Trudell, Ph.D. JRT: rw