Titles
- Letter from Orio Ciferri to Joshua Lederberg27
- Letter from James F. Crow to Joshua Lederberg26
- Letter from Gordon Allen to Joshua Lederberg25
- Letter from G. J. V. Nossal, Walter & Eliza Hall Institute of Medical Research to Joshua Lederberg24
- Letter from William Hayes to Luca Cavalli-Sforza24
- Letter from Arthur Kornberg to Joshua Lederberg23
- Letter from Barbara McClintock to Charles R. Burnham23
- Letter from Boris Ephrussi to Joshua Lederberg23
- Letter from James D. Watson to Francis Crick23
- Letter from Joseph Lein to Joshua Lederberg23
- Letter from Boris Rotman to Joshua Lederberg22
- Letter from Evelyn Witkin to Joshua Lederberg22
- Letter from Howard B. Newcombe to Joshua Lederberg22
- Letter from Jacques Monod to Joshua Lederberg22
- Letter from Luca Cavalli-Sforza to William Hayes22
- Letter from Roger Y. Stanier to Joshua Lederberg22
- Letter from Wolfram Heumann to Joshua Lederberg21
- Postcard from Karl Paul Link to Joshua Lederberg21
- Letter from David M. Bonner to Joshua Lederberg20
- Letter from Edward A. Adelberg to Joshua Lederberg20