Titles
- Letter from Barbara Atwood to Joshua and Esther Lederberg3
- Letter from Barbara Holcman de Spector to Joshua Lederberg3
- Letter from Barbara McClintock to Curt and Evelyn Stern3
- Letter from Bernice Sacks Lipkin to Joshua Lederberg3
- Letter from Bo Lindell to Joshua Lederberg3
- Letter from Bruce Wallace to Joshua Lederberg3
- Letter from Bryce Crawford, Jr., National Academy of Sciences to Joshua Lederberg3
- Letter from C. B. Van Niel to Joshua and Esther Lederberg3
- Letter from C. E. Clifton to Joshua Lederberg3
- Letter from Caroline Raut to Joshua Lederberg3
- Letter from Cass Canfield to Joshua Lederberg3
- Letter from Claude Forkner to Florence R. Sabin3
- Letter from Clive C. Spicer to Joshua and Esther Lederberg3
- Letter from Columbia University to Joshua Lederberg3
- Letter from Cy Levinthal to Joshua Lederberg3
- Letter from D. H. L. Bishop to Sol Spiegelman3
- Letter from D. Lewis to Joshua Lederberg3
- Letter from Daniel Bavly, Association for Peace to Joshua Lederberg3
- Letter from Daniel L. Hartl to Joshua Lederberg3
- Letter from Daniel Nathans to David C. Ward3