Titles
- Letter from Joshua Lederberg to Einar Leifson5
- Letter from Joshua Lederberg to Elizabeth S. (Tibby) Russell5
- Letter from Joshua Lederberg to Frank H. T. Rhodes5
- Letter from Joshua Lederberg to Guido Pontecorvo5
- Letter from Joshua Lederberg to Gunther S. Stent5
- Letter from Joshua Lederberg to H. B. Steinbach5
- Letter from Joshua Lederberg to Hattie E. Alexander5
- Letter from Joshua Lederberg to Helen (Byers) Bernstein5
- Letter from Joshua Lederberg to Hisao Uetake5
- Letter from Joshua Lederberg to Homer E. Newell5
- Letter from Joshua Lederberg to Igor N. Asheshov5
- Letter from Joshua Lederberg to James L. Goddard5
- Letter from Joshua Lederberg to James M. Sherman5
- Letter from Joshua Lederberg to Jerome B. Wiesner5
- Letter from Joshua Lederberg to John E. Merriam5
- Letter from Joshua Lederberg to John E. Pfeiffer5
- Letter from Joshua Lederberg to John Von Neumann5
- Letter from Joshua Lederberg to John Yudkin5
- Letter from Joshua Lederberg to L. L. Waters5
- Letter from Joshua Lederberg to Malcolm Wiener5