Titles
- Letter from Arthur Kornberg to Joshua Lederberg23
- Letter from Boris Ephrussi to Joshua Lederberg23
- Letter from Francis J. Ryan to Joshua Lederberg23
- Letter from James D. Watson to Francis Crick23
- Letter from Joseph Lein to Joshua Lederberg23
- Letter from Joshua Lederberg to R. Sargent Shriver, Jr.23
- Letter from Joshua Lederberg to Salvador E. Luria23
- Letter from Salvador E. Luria to Joshua Lederberg23
- Letter from Boris Rotman to Joshua Lederberg22
- Letter from Gordon Allen to Joshua Lederberg22
- Letter from Joshua Lederberg to Arthur Kornberg22
- Letter from Joshua Lederberg to M. Demerec22
- Letter from Luca Cavalli-Sforza to William Hayes22
- Letter from Roger Y. Stanier to Joshua Lederberg22
- [Frank B. Rogers]22
- [Fredrickson file: Sixth "Science Deputy" Coffee]22
- [Fredrickson third "science deputy" coffee]22
- Letter from Joshua Lederberg to William Hayes21
- Letter from Sol Spiegelman to Joshua Lederberg21
- Letter from Wolfram Heumann to Joshua Lederberg21