Titles
- Letter from Joshua Lederberg to James E. Webb2
- Letter from Joshua Lederberg to John W. Macy, Jr.2
- Letter from Joshua Lederberg to John Z. Bowers2
- Letter from Joshua Lederberg to Matthew Meselson2
- Letter from Manuel V. Ortega to Esther Lederberg2
- Letter from Matthew Meselson to Joshua Lederberg2
- Letter from Odom Fanning to Joshua Lederberg2
- Letter from Pedro Galindo to Fred L. Soper2
- Letter from Peter Medawar to Joshua Lederberg2
- Letter from R. Sargent Shriver, Jr. to Joshua Lederberg2
- Letter from Sol Spiegelman to D. H. L. Bishop2
- Letter from Stanfield Rogers to Joshua Lederberg2
- Letter from W. H. Duehren to Adrian Kantrowitz2
- Letter from William J. Wiswesser to Joshua Lederberg2
- An Open Letter to the American People: A Count of Broken Promises1
- Confusion on the Pill [Letter to the Editor of the New York Times]1
- Letter from Alexander Bodi, Palo Alto Times to Joshua Lederberg1
- Letter from Almiro Blumenschein to Barbara McClintock1
- Letter from Barbara McClintock to William L. Brown1
- Letter from Boris Ephrussi to Joshua Lederberg1