Titles
- Letter from Albert Tyler to Joshua Lederberg4
- Letter from Alexander Bodi, Palo Alto Times to Joshua Lederberg4
- Letter from Alfred J. Weil to Joshua Lederberg4
- Letter from Allan M. Campbell to Joshua Lederberg4
- Letter from Allen G. Marr to Joshua Lederberg4
- Letter from Anonymous to Joshua Lederberg4
- Letter from Anthony Fauci to Joshua Lederberg4
- Letter from Arne Tiselius to Joshua Lederberg4
- Letter from Arnold O. Beckman to Joshua Lederberg4
- Letter from Arnold Thackray, Isis to Joshua Lederberg4
- Letter from Arthur E. Rikli to Donald A. B. Lindberg4
- Letter from Barbara E. Wright, Boston Biomedical Research Institute to Joshua Lederberg4
- Letter from Barry Commoner to Joshua Lederberg4
- Letter from Bernard Rimland to Joshua Lederberg4
- Letter from Biological Abstracts to Joshua Lederberg4
- Letter from Bruce Alberts, National Academy of Sciences to Joshua Lederberg4
- Letter from Bruce W. Holloway to Joshua Lederberg4
- Letter from Burton A. Waisbren to Joshua Lederberg4
- Letter from Charles A. Stuart to Joshua Lederberg4
- Letter from Charles C. Brinton, Jr. to Joshua Lederberg4