Titles
- Letter from Joshua Lederberg to Detlev Wulf Bronk6
- Letter from Joshua Lederberg to Edouard Kellenberger6
- Letter from Joshua Lederberg to Edward M. Kennedy6
- Letter from Joshua Lederberg to Edwin C. Whitehead6
- Letter from Joshua Lederberg to Francis Crick6
- Letter from Joshua Lederberg to Frederick L. Stone6
- Letter from Joshua Lederberg to Frits and Ida Orskov6
- Letter from Joshua Lederberg to Gordon Wolstenholme6
- Letter from Joshua Lederberg to Henry P. Treffers6
- Letter from Joshua Lederberg to Herman N. Eisen6
- Letter from Joshua Lederberg to I. Bernard Cohen6
- Letter from Joshua Lederberg to Igor Y. Tamm, Lebedev's Institute for Physical Research6
- Letter from Joshua Lederberg to John R. Platt6
- Letter from Joshua Lederberg to L. C. Dunn6
- Letter from Joshua Lederberg to Lawrence Dunkelman6
- Letter from Joshua Lederberg to Leonard Herzenberg6
- Letter from Joshua Lederberg to Lynferd J. Wickerham6
- Letter from Joshua Lederberg to Maclyn McCarty6
- Letter from Joshua Lederberg to Mortimer Starr6
- Letter from Joshua Lederberg to N. Avrion Mitchison6