Titles
- Letter from Joshua Lederberg to John E. Pfeiffer5
- Letter from Joshua Lederberg to John Von Neumann5
- Letter from Joshua Lederberg to John Yudkin5
- Letter from Joshua Lederberg to L. L. Waters5
- Letter from Joshua Lederberg to Malcolm Wiener5
- Letter from Joshua Lederberg to Margaret Lieb5
- Letter from Joshua Lederberg to Matthew Meselson5
- Letter from Joshua Lederberg to Melvin Calvin5
- Letter from Joshua Lederberg to Michael Heidelberger5
- Letter from Joshua Lederberg to Neal B. Groman5
- Letter from Joshua Lederberg to Noel Gayler5
- Letter from Joshua Lederberg to Olavi Makela5
- Letter from Joshua Lederberg to Peter R. Day5
- Letter from Joshua Lederberg to Philip E. Hartman5
- Letter from Joshua Lederberg to R. S. Benham5
- Letter from Joshua Lederberg to Richard L. Masland5
- Letter from Joshua Lederberg to Richard W. Lyman5
- Letter from Joshua Lederberg to Riley D. Housewright5
- Letter from Joshua Lederberg to Robert S. Morison, Rockefeller Foundation5
- Letter from Joshua Lederberg to Robert Tulasne5