Titles
- Letter from Felix Haurowitz to Michael Heidelberger2
- Letter from Francis Crick to Aaron Klug2
- Letter from Fred R. Harris to Joshua Lederberg2
- Letter from Gaylord Nelson to Joshua Lederberg2
- Letter from George D. Snell to Joshua Lederberg2
- Letter from Irving P. Crawford to Paul Berg2
- Letter from Joshua Lederberg to A. D. Hershey2
- Letter from Joshua Lederberg to Aaron Novick2
- Letter from Joshua Lederberg to Arie J. Haagen-Smit2
- Letter from Joshua Lederberg to Arne Tiselius2
- Letter from Joshua Lederberg to Arthur R. Tamplin2
- Letter from Joshua Lederberg to Dennis Flanagan, Scientific American2
- Letter from Joshua Lederberg to Edouard Kellenberger2
- Letter from Joshua Lederberg to Elizabeth S. (Tibby) Russell2
- Letter from Joshua Lederberg to Frank Stodola2
- Letter from Joshua Lederberg to Fred Keller2
- Letter from Joshua Lederberg to G. A. Derbyshire2
- Letter from Joshua Lederberg to Harold W. Wolf2
- Letter from Joshua Lederberg to Herman W. Lewis, National Science Foundation2
- Letter from Joshua Lederberg to Hugh Odishaw2