Titles
- Letter from Harold Varmus to E. C. C. Lin, Harvard Medical School1
- Letter from Harold Varmus to Ian Macpherson, Imperial Cancer Research Fund Laboratories1
- Letter from Harold Varmus to Paul Hough, Cold Spring Harbor Laboratory1
- Letter from Harriet Zuckerman to Joshua Lederberg1
- Letter from Hartmut Braun to Joshua Lederberg1
- Letter from Henry C. Wallich to Joshua Lederberg1
- Letter from Herbert Gelernter to Natesa S. Sridharan1
- Letter from Herman A. Witkin to Joshua Lederberg1
- Letter from Irene S. Forrest to Joshua Lederberg1
- Letter from J. R. S. Fincham to Barbara McClintock1
- Letter from Jacob A. Arlow to Joshua Lederberg1
- Letter from Jacob Marschak to Joshua Lederberg1
- Letter from James D. Watson, Cold Spring Harbor Laboratory to Harold Varmus1
- Letter from James R. Trudell to Joshua Lederberg1
- Letter from Joan Dunkelberger to Virginia Apgar1
- Letter from John A. Moore to Joshua Lederberg1
- Letter from John C. McKinney to Joshua Lederberg1
- Letter from John M. Packard to Robert Glaze1
- Letter from John Spizizen, Scripps Clinic and Research Foundation to Joshua Lederberg1
- Letter from Jurgen Ewald Gaul to Joshua Lederberg1