Titles
- Letter from Daniel Nathans to Paul Berg3
- Letter from David C. Ward to Daniel Nathans3
- Letter from David J. Galas, United States Department of Energy to Joshua Lederberg3
- Letter from David M. Bonner to Edward L. Tatum3
- Letter from David Perlman to Joshua Lederberg3
- Letter from Davis B. Bobrow to Joshua Lederberg3
- Letter from Dean B. Cowie to Joshua Lederberg3
- Letter from Dean Fraser to Joshua Lederberg3
- Letter from Difco Laboratories to Joshua Lederberg3
- Letter from Doubleday & Company to Joshua Lederberg3
- Letter from E. K. Borman to Joshua Lederberg3
- Letter from E. Paul Magaha, Jr. to Joshua Lederberg3
- Letter from Edgar Altenburg to Joshua Lederberg3
- Letter from Edward J. Beckhorn to Joshua Lederberg3
- Letter from Edward L. Ginzton to Joshua Lederberg3
- Letter from Edward L. Tatum to Joshua and Esther Lederberg3
- Letter from Edward M. Kennedy to Joshua Lederberg3
- Letter from Edward M. Kennedy to Mary Lasker3
- Letter from Einar Leifson to Joshua Lederberg3
- Letter from Elbert G. Smith to Joshua Lederberg3