Titles
- Letter from Harold C. Urey to Joshua Lederberg6
- Letter from Herman M. Kalckar to Joshua and Esther Lederberg6
- Letter from Howard M. Cann to Joshua Lederberg6
- Letter from Irvine H. Page to Joshua Lederberg6
- Letter from Jean Weigle to Joshua Lederberg6
- Letter from Jerry Donohue to Francis Crick6
- Letter from Joshua Lederberg to A. R. Gopal-Ayengar6
- Letter from Joshua Lederberg to Abraham A. Ribicoff6
- Letter from Joshua Lederberg to Albert Rothenberg6
- Letter from Joshua Lederberg to Alejandro Zaffaroni6
- Letter from Joshua Lederberg to Alfred J. Weil6
- Letter from Joshua Lederberg to Andre Lwoff6
- Letter from Joshua Lederberg to Anthony M. Iannone6
- Letter from Joshua Lederberg to Aura E. Severinghaus6
- Letter from Joshua Lederberg to Barbara McClintock6
- Letter from Joshua Lederberg to Bruce Wallace6
- Letter from Joshua Lederberg to Charles R. Phillips6
- Letter from Joshua Lederberg to David Rockefeller6
- Letter from Joshua Lederberg to David Talmage6
- Letter from Joshua Lederberg to Dennis Flanagan, Scientific American6