Titles
- Letter from Joshua Lederberg to William Hayes6
- Letter from Werner K. Maas to Joshua Lederberg6
- Letter from Clive C. Spicer to Joshua Lederberg5
- Letter from Edward L. Tatum to Joshua Lederberg5
- Letter from Emma Klieneberger-Nobel to Joshua Lederberg5
- Letter from Fritz Kauffmann to Joshua Lederberg5
- Letter from Helen (Byers) Bernstein to Joshua Lederberg5
- Letter from Joshua Lederberg to Clive C. Spicer5
- Letter from Joshua Lederberg to D. H. Wenrich5
- Letter from Philip E. Hartman to Joshua Lederberg5
- Letter from Sol Spiegelman to Joshua Lederberg5
- Letter from Aaron Novick to Joshua Lederberg4
- Letter from Charlotte A. Colwell to Joshua Lederberg4
- Letter from E. S. Anderson to Joshua Lederberg4
- Letter from Freeman A. Weiss to Joshua Lederberg4
- Letter from Hideo Kikkawa to Joshua Lederberg4
- Letter from J. S. K. Boyd to Joshua Lederberg4
- Letter from Joshua Lederberg to Bernard D. Davis4
- Letter from Joshua Lederberg to Emma Klieneberger-Nobel4
- Letter from Joshua Lederberg to Igor N. Asheshov4