Titles
- Letter from Joshua Lederberg to Fritz Kauffmann12
- Letter from Joshua Lederberg to Hideo Kikkawa12
- Letter from Joshua Lederberg to Hugh Odishaw12
- Letter from Joshua Lederberg to Jack Edman12
- Letter from Joshua Lederberg to James D. Watson12
- Letter from Joshua Lederberg to John Burton Sanderson Haldane12
- Letter from Joshua Lederberg to Lloyd V. Berkner12
- Letter from Joshua Lederberg to M. L. Morse12
- Letter from Joshua Lederberg to Martin R. Pollock12
- Letter from Joshua Lederberg to Palmer David Skaar12
- Letter from Joshua Lederberg to Robert Paul Levine12
- Letter from Joshua Lederberg to Yukinori Hirota12
- Letter from Lawrence Kolb to Walter Treadway12
- Letter from Leon A. Heppel to Maxine Singer12
- Letter from Melvin Cohn to Joshua Lederberg12
- Letter from Michael Doudoroff to Joshua Lederberg12
- Letter from Myron Tribus to Joshua Lederberg12
- Letter from Ntinos C. Myrianthopoulos to Joshua Lederberg12
- Letter from R. A. Brink to Joshua Lederberg12
- Letter from S. Gaylen Bradley to Joshua and Esther Lederberg12