Titles
- Letter from Joshua Lederberg to S. H. Eisman2
- Letter from L. Edgar Lee, Jr. to Joshua Lederberg2
- Letter from Marcel Florkin to Joshua Lederberg2
- Letter from Maxwell Gordon to Joshua Lederberg2
- Letter from Philip Goldstein to Joshua Lederberg2
- Letter from Rita Levi-Montalcini to Joshua Lederberg2
- Letter from S. H. Eisman to Joshua Lederberg2
- Letter from Vernon Bryson to Joshua Lederberg2
- Letter from Werner Braun to Joshua Lederberg2
- Letter from Wolfram Heumann to Joshua Lederberg2
- Letter from Aaron Novick to Bruce Stocker1
- Letter from Adrian Kantrowitz to Doris J. W. E. Escher1
- Letter from Adrian Kantrowitz to R. C. Bunts1
- Letter from Aksel Faber to Joshua Lederberg1
- Letter from Alain Bussard to Joshua Lederberg1
- Letter from Alfred E. Mirsky to Edward L. Tatum1
- Letter from Alton Ochsner to Michael E. DeBakey1
- Letter from Ann Crow to Esther Lederberg1
- Letter from Arnold Katz to Joshua Lederberg1
- Letter from B. B. Trotter to Michael E. DeBakey1