Titles
- Letter from Lloyd V. Berkner to Joshua Lederberg2
- Letter from Maurice L. Silver to John E. Fogarty2
- Letter from Peter H. A. Sneath to Joshua Lederberg2
- Letter from Philip Goldstein to Joshua Lederberg2
- Letter from Richard L. Soffer to Joshua Lederberg2
- Letter from Richard W. Porter to A. A. Blagonravov2
- Letter from Robert M. Wilson to Joshua Lederberg2
- Letter from Salvador E. Luria to Joshua Lederberg2
- Letter from Thomas J. Francis, Jr. to Joshua Lederberg2
- Letter from Yukinori Hirota to Joshua and Esther Lederberg2
- Letter from A. K. Bhattacharyya to Joshua Lederberg1
- Letter from A. Klopstock to Joshua Lederberg1
- Letter from A. T. Wilson to Joshua Lederberg1
- Letter from Alain Bussard to Joshua Lederberg1
- Letter from Allen G. Marr to Joshua Lederberg1
- Letter from Amel R. Menotti, Bristol Laboratories to Joshua Lederberg1
- Letter from Andre Lwoff to Arthur Kornberg1
- Letter from Arthur C. Giese to Joshua Lederberg1
- Letter from Arthur Kornberg to Andre Lwoff1
- Letter from Arthur Kornberg to H. George Mandel1