Titles
- Letter from Joshua Lederberg to Nicolai D. Ierusalimski2
- Letter from Joshua Lederberg to P. R. Edwards2
- Letter from Joshua Lederberg to Peter H. A. Sneath2
- Letter from Joshua Lederberg to Tetsuo Iino2
- Letter from Joshua Lederberg to Walter Plaut2
- Letter from Joshua Lederberg to William Hayes2
- Letter from Joshua Lederberg to Yukinori Hirota2
- Letter from Louis S. Baron to Joshua Lederberg and Esther Lederberg2
- Letter from Milan Hasek to Joshua Lederberg2
- Letter from Myron H. Halpern to Joshua Lederberg2
- Letter from Paul Berg to Theodore R. Breitman2
- Letter from Robert K. Morton to Arthur Kornberg2
- Letter from Ruth Sager to Joshua Lederberg2
- Letter from Shields Warren to Joshua Lederberg2
- Letter from Stanley L. Miller to Joshua Lederberg2
- Letter from Walter F. Bodmer to Joshua Lederberg2
- Letter from Walter Plaut to Joshua Lederberg2
- Letter from William Hayes to Joshua Lederberg2
- Letter from Wolfram Heumann to Joshua Lederberg2
- Letter from Yukinori Hirota to Ida Orskov2