Titles
- Letter from Christian B. Anfinsen to James Watt1
- Letter from Clarence C. Cain to Joshua Lederberg1
- Letter from Colin S. Pittendrigh to Lloyd V. Berkner1
- Letter from Curt Stern to Joshua Lederberg1
- Letter from Daniel Mazia to Joshua Lederberg1
- Letter from David Ben-Dov, Embassy of Israel to Joshua Lederberg1
- Letter from Debi P. Burma, Bose Research Institute to Joshua Lederberg1
- Letter from Detlev Wulf Bronk to Joshua Lederberg1
- Letter from Don Flickinger to Joshua Lederberg2
- Letter from Don H. Card to Joshua Lederberg1
- Letter from Donald A. Chambers to Joshua Lederberg1
- Letter from Dorothy H. Strong to Joshua Lederberg2
- Letter from Edgar Wayburn, San Francisco Medical Society to Joshua Lederberg1
- Letter from Edmund R. Beckwith, Jr., Syntex Laboratories to Joshua Lederberg1
- Letter from Edward Anders to Carl Sagan1
- Letter from Edward Anders to Joshua Lederberg2
- Letter from Edward Anders to the American Association for the Advancement of Science1
- Letter from Edward W. Dempsey to Robert P. Clark1
- Letter from Eleanor M. Johnson to John E. Fogarty1
- Letter from Elof A. Carlson to Joshua Lederberg3