Titles
- Letter from Jerry Donohue to Francis Crick6
- Letter from Joshua Lederberg to A. R. Gopal-Ayengar6
- Letter from Joshua Lederberg to Abraham A. Ribicoff6
- Letter from Joshua Lederberg to Albert Rothenberg6
- Letter from Joshua Lederberg to Alejandro Zaffaroni6
- Letter from Joshua Lederberg to Bruce Wallace6
- Letter from Joshua Lederberg to Charles R. Phillips6
- Letter from Joshua Lederberg to Curt Stern6
- Letter from Joshua Lederberg to David Rockefeller6
- Letter from Joshua Lederberg to David Talmage6
- Letter from Joshua Lederberg to Dennis Flanagan, Scientific American6
- Letter from Joshua Lederberg to Detlev Wulf Bronk6
- Letter from Joshua Lederberg to Edouard Kellenberger6
- Letter from Joshua Lederberg to Edward M. Kennedy6
- Letter from Joshua Lederberg to Edwin C. Whitehead6
- Letter from Joshua Lederberg to Francis Crick6
- Letter from Joshua Lederberg to Frederick L. Stone6
- Letter from Joshua Lederberg to Frits and Ida Orskov6
- Letter from Joshua Lederberg to Gordon Wolstenholme6
- Letter from Joshua Lederberg to Henry P. Treffers6