- Letter from Harry Woolf, Institute for Advanced Study to Joshua Lederberg1
- Letter from Helen (Byers) Bernstein to Joshua Lederberg1
- Letter from Henry B. Betts to C. Everett Koop1
- Letter from Henry D. Paley, Commission on Independent Colleges and Universities to Joshua Lederberg1
- Letter from Henry F. Epstein to Joshua Lederberg1
- Letter from Henry L. Levin to Joshua Lederberg1
- Letter from Henry M. Stratton, Thieme-Stratton, Inc. to C. Everett Koop1
- Letter from Herbert M. Allison, Jr. to Joshua Lederberg1
- Letter from Herbert Ratner to C. Everett Koop1
- Letter from Howard A. Schneiderman, Monsanto Company to Joshua Lederberg1
- Letter from Irving J. Selikoff to Joshua Lederberg1
- Letter from Isac Halbrecht to Joshua Lederberg1
- Letter from J. Michael Bishop to Peter K. Vogt, University of Southern California School of Medicine1
- Letter from James A. Linen III to William C. Gibson1
- Letter from James C. Dobson, Focus on the Family to C. Everett Koop1
- Letter from James D. Watson to Joshua Lederberg1
- Letter from James P. Murphy, City University of New York to Joshua Lederberg1
- Letter from Joel R. Bender, Formaldehyde Institute to Mary M. McNamara1
- Letter from John Bonnar, Trinity College, University of Dublin, Department of Obstetrics and Gynaecology to C. Everett Koop1
- Letter from John Higginson, International Agency for Research on Cancer to Peter F. Infante, Occupational Safety and Health Administration (OSHA)1