- Letter from Brian P. Schanning, Mitre Corporation to Joshua Lederberg1
- Letter from Bruce W. Holloway to Joshua Lederberg1
- Letter from Bryce Crawford, Jr. to the National Academy of Sciences1
- Letter from Bryce Crawford, Jr., National Academy of Sciences to Joshua Lederberg1
- Letter from C. Everett Koop to Samuel Ichiye Hayakawa, United States Senate1
- Letter from Charles A. R. Hoare to Joshua Lederberg1
- Letter from Colette Mahoney to Joshua Lederberg1
- Letter from Cornell University Press to Joshua Lederberg1
- Letter from Dale G. Johnson, University of Utah, College of Medicine to Orrin Hatch, United States Senate1
- Letter from David T. Suzuki, Genetics Society of America to Joshua Lederberg1
- Letter from Donald Kennedy, Health Effects Institute to Joshua Lederberg1
- Letter from Dyann F. Wirth to Purnell Choppin1
- Letter from Edward E. David, Jr. to Joshua Lederberg1
- Letter from Edward J. Gerrity, International Telephone & Telegraph Corporation (ITT) to Joshua Lederberg1
- Letter from Eileen Rockefeller to Joshua Lederberg1
- Letter from Ezra Lozinski to Joshua Lederberg1
- Letter from Farrington Daniels, Jr. to Joshua Lederberg1
- Letter from Francis Crick to Tomaso Poggio1
- Letter from Frank E. Young to Joshua Lederberg1
- Letter from Frank Press to Joshua Lederberg1