Titles
- Letter from Harvey Brooks to Joshua Lederberg1
- Letter from I. Bernard Cohen to Joshua Lederberg1
- Letter from J. Michael Quinlan, Bureau of Prisons, to June E. Osborn1
- Letter from James B. Wyngaarden to Daniel Wikler1
- Letter from James C. Hill to Pablo Rubinstein1
- Letter from James V. Neel to Joshua Lederberg1
- Letter from Jean-Claude Ameisen to Joshua Lederberg3
- Letter from Jeffrey D. Ullman to Joshua Lederberg1
- Letter from John Cairns to Joshua Lederberg2
- Letter from John W. Hicks to John E. Burris1
- Letter from Joshua Lederberg and David Thaler to Charles D. Laird1
- Letter from Joshua Lederberg to Alexei Arbatov, Academy of Sciences, U.S.S.R.1
- Letter from Joshua Lederberg to Andre F. Marion, Applied Biosystems1
- Letter from Joshua Lederberg to Ann Cook Ganesan1
- Letter from Joshua Lederberg to Anthony Fauci1
- Letter from Joshua Lederberg to Chris Davis1
- Letter from Joshua Lederberg to Clinton E. Ballou1
- Letter from Joshua Lederberg to Connie Perhena1
- Letter from Joshua Lederberg to D. M. Gersten and V. J. Hearing1
- Letter from Joshua Lederberg to David Barnette1