Titles
- Letter from Joshua Lederberg to Fred R. Harris3
- Letter from Joshua Lederberg to Frederick Seitz3
- Letter from Joshua Lederberg to Garland E. Allen3
- Letter from Joshua Lederberg to Gaspar Fabbricante, Stuyvesant High School3
- Letter from Joshua Lederberg to George Lefevre, National Science Foundation3
- Letter from Joshua Lederberg to Grayson Kirk3
- Letter from Joshua Lederberg to Guiseppe Bertani3
- Letter from Joshua Lederberg to H. Keffer Hartline3
- Letter from Joshua Lederberg to H. Quastler3
- Letter from Joshua Lederberg to Harold C. Urey3
- Letter from Joshua Lederberg to Harold W. Wolf3
- Letter from Joshua Lederberg to Harry Schwartz3
- Letter from Joshua Lederberg to Henry G. Kunkel3
- Letter from Joshua Lederberg to Herman A. Witkin3
- Letter from Joshua Lederberg to Herschel Roman3
- Letter from Joshua Lederberg to Howard C. Goodman, World Health Organization3
- Letter from Joshua Lederberg to Hugh L. Dryden3
- Letter from Joshua Lederberg to Hugh L. Dryden, National Academy of Sciences3
- Letter from Joshua Lederberg to Indiana University Press3
- Letter from Joshua Lederberg to International Business Machines, Inc. (IBM)3