Titles
- Letter from Mary Lasker to Edward M. Kennedy1
- Letter from Maxine Singer and Sidney Altman to Bernadine Healy1
- Letter from Maxine Singer to Douglas Hofstadter1
- Letter from Maxine Singer to Michael Zuker1
- Letter from Maxine Singer to William T. Golden and Joshua Lederberg1
- Letter from Maxine Singer to the editor of The Washington Post1
- Letter from Merlin K. DuVal to Donald A. B. Lindberg2
- Letter from Michael E. DeBakey to Donald A. B. Lindberg1
- Letter from Monica Riley, Marine Biological Laboratory to Joshua Lederberg1
- Letter from Nancy S. Wexler to the ELSI Working Group1
- Letter from Nils Fries to Joshua Lederberg1
- Letter from Pablo Rubinstein to Joshua Lederberg1
- Letter from Paul B. Ferrara to Oskar R. Zaborsky and Victor A. McKusick1
- Letter from Paul J. Sanazaro to Donald A. B. Lindberg1
- Letter from Peter T. Magee to Joshua Lederberg1
- Letter from Philip R. Lee to Donald A. B. Lindberg1
- Letter from Pnina Abir-Am to Joshua Lederberg2
- Letter from Ralph Engle to Donald A. B. Lindberg1
- Letter from Richard E. Smalley to Joshua Lederberg1
- Letter from Robert H. Haynes to Joshua Lederberg1