Titles
- Letter from Peter Mitchell to Joshua Lederberg4
- Letter from Philip H. Abelson to Joshua Lederberg4
- Letter from Phoebe Huang, Comtex Scientific Corporation to Joshua Lederberg4
- Letter from R. A. Brink to Edward L. Tatum4
- Letter from Ralph M. Waters to Virginia Apgar4
- Letter from Richard Goldschmidt to Joshua Lederberg4
- Letter from Richard M. Krause to Joshua Lederberg4
- Letter from Richard W. Lyman to Joshua Lederberg4
- Letter from Richard Willstatter to Michael Heidelberger4
- Letter from Richard Wolfgang to Joshua Lederberg4
- Letter from Rita Levi-Montalcini to Joshua Lederberg4
- Letter from Robert H. Ebert, Milbank Memorial Fund to Joshua Lederberg4
- Letter from Robert Tulasne to Joshua Lederberg4
- Letter from Robley Williams to Rosalind Franklin4
- Letter from Rodman C. Rockefeller to Joshua Lederberg4
- Letter from Rodney W. Nichols to Alexander D. Forger4
- Letter from Roger M. Herriott to Joshua Lederberg4
- Letter from Roger S. Greene to Alan Gregg4
- Letter from Rosalind Franklin to F. C. Bawden4
- Letter from Rosalind Franklin to Robley Williams4