Titles
- Letter from Joshua Lederberg to George W. Beadle14
- Letter from Joshua Lederberg to Hilary Koprowski14
- Letter from Joshua Lederberg to John A. Moore14
- Letter from Joshua Lederberg to Louis S. Baron14
- Letter from Joshua Lederberg to S. Gaylen Bradley14
- Letter from Philip E. Hartman to Joshua Lederberg14
- Letter from Ralph A. Lewin to Joshua Lederberg14
- Letter from Robert Paul Levine to Joshua Lederberg14
- Letter from S. Gaylen Bradley to Joshua Lederberg14
- Letter from Clive C. Spicer to Joshua Lederberg13
- Letter from Harry Eagle to Joshua Lederberg13
- Letter from Hugh Odishaw to Joshua Lederberg13
- Letter from James D. Watson to Joshua Lederberg13
- Letter from Joshua Lederberg to Aleck Bernstein13
- Letter from Joshua Lederberg to Alexander Hollaender13
- Letter from Joshua Lederberg to Avram Goldstein13
- Letter from Joshua Lederberg to Carl-Goran Heden13
- Letter from Joshua Lederberg to David M. Bonner13
- Letter from Joshua Lederberg to Evelyn Witkin13
- Letter from Joshua Lederberg to Harry Eagle13