Titles
- Letter from Joshua Lederberg to Maurice B. Visscher3
- Letter from Joshua Lederberg to Michael Feldman3
- Letter from Joshua Lederberg to Morton Mintz, Washington Post3
- Letter from Joshua Lederberg to Nelson A Rockefeller3
- Letter from Joshua Lederberg to Nelson K. Richtmyer3
- Letter from Joshua Lederberg to Niccolo Visconti3
- Letter from Joshua Lederberg to Nicholas Johnson, Federal Communications Commission3
- Letter from Joshua Lederberg to Ole Maaloe3
- Letter from Joshua Lederberg to P. H. Makela3
- Letter from Joshua Lederberg to P. O. Williams, Wellcome Trust3
- Letter from Joshua Lederberg to Paul R. Ehrlich3
- Letter from Joshua Lederberg to Per Oftedal3
- Letter from Joshua Lederberg to Perry W. Wilson3
- Letter from Joshua Lederberg to Peter Mitchell3
- Letter from Joshua Lederberg to Philip Goldstein3
- Letter from Joshua Lederberg to Philip H. Abelson3
- Letter from Joshua Lederberg to Philip Levine3
- Letter from Joshua Lederberg to R. Castaing3
- Letter from Joshua Lederberg to Richard Danzig3
- Letter from Joshua Lederberg to Robert E. Wright3