Titles
- Letter from Joshua Lederberg to Leonard Herzenberg3
- Letter from Joshua Lederberg to Lloyd V. Berkner3
- Letter from Joshua Lederberg to Louis S. Baron3
- Letter from Joshua Lederberg to Melvin Calvin3
- Letter from Joshua Lederberg to Salvador E. Luria3
- Letter from Leonard M. Elstad to John E. Fogarty3
- Letter from Louis S. Baron to Joshua Lederberg3
- Letter from Louis S. Baron to Joshua and Esther Lederberg3
- Letter from N. Avrion Mitchison to Joshua Lederberg3
- Letter from Peter Medawar to Joshua Lederberg3
- Postcard from Karl Paul Link to Joshua Lederberg3
- Letter from Albert Tyler to Joshua Lederberg2
- Letter from Arthur B. Pardee to Joshua Lederberg2
- Letter from Arthur J. Lesser to John E. Fogarty2
- Letter from Arthur Kornberg to Joshua Lederberg2
- Letter from Barbara Holcman de Spector to Joshua Lederberg2
- Letter from Charles C. Brinton, Jr. to Joshua Lederberg2
- Letter from Charles R. Phillips to Joshua Lederberg2
- Letter from David Perkins to Joshua Lederberg2
- Letter from Detlev Wulf Bronk to Joshua Lederberg2