Titles
- Letter from George W. Beadle to Barbara McClintock2
- Letter from Harold Varmus and J. Michael Bishop to Robert J. Huebner, National Cancer Institute2
- Letter from Joshua Lederberg to Alex Keynan2
- Letter from Joshua Lederberg to Alfred E. Mirsky2
- Letter from Joshua Lederberg to Arnold W. Ravin2
- Letter from Joshua Lederberg to Bernard D. Davis2
- Letter from Joshua Lederberg to C. B. Van Niel2
- Letter from Joshua Lederberg to Edward L. Tatum2
- Letter from Joshua Lederberg to Edward M. Kennedy2
- Letter from Joshua Lederberg to G. J. V. Nossal, Walter & Eliza Hall Institute of Medical Research2
- Letter from Joshua Lederberg to John S. Lambert2
- Letter from Joshua Lederberg to L. C. Dunn2
- Letter from Joshua Lederberg to L. L. Waters2
- Letter from Joshua Lederberg to Mary Washington Frazer, Tennessee State Library and Archives2
- Letter from Joshua Lederberg to Richard S. Young2
- Letter from Joshua Lederberg to Rollin D. Hotchkiss2
- Letter from Joshua Lederberg to Torbjorn Caspersson2
- Letter from L. L. Waters to Joshua Lederberg2
- Letter from Martin M. Kaplan, World Health Organization to Joshua Lederberg2
- Letter from Maxine Singer to Daniel Nathans2