Titles
- 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
- Letter from Joshua Lederberg to Ntinos C. Myrianthopoulos6
- Letter from Joshua Lederberg to O. H. Frankel6
- Letter from Joshua Lederberg to Paul G. Rogers6
- Letter from Joshua Lederberg to Paul R. Burkholder6
- Letter from Joshua Lederberg to R. G. E. Murray6
- Letter from Joshua Lederberg to Raymond R. Roepke, American Cyanamid Company6
- Letter from Joshua Lederberg to Samuel J. Ajl6
- Letter from Joshua Lederberg to Seymour H. Hutner6