Titles
- Letter from Linda H. Clever to Joshua Lederberg5
- Letter from Lister Hill to Mary Lasker5
- Letter from Louis Dublin to Lee Frankel5
- Letter from Lynferd J. Wickerham to Joshua Lederberg5
- Letter from Marguerite Vogt to Joshua Lederberg5
- Letter from Maurice R. Green, South Beach Psychiatric Center to Joshua Lederberg5
- Letter from Maxine Singer to Marianne Grunberg-Manago5
- Letter from Meyer W. Weisgal to Joshua Lederberg5
- Letter from Mildred P. Holbrook to Joshua Lederberg5
- Letter from Mortimer Starr to Joshua Lederberg5
- Letter from Neal B. Groman to Joshua Lederberg5
- Letter from Niccolo Visconti to Joshua Lederberg5
- Letter from O. O. R. Schwidetzky to Michael E. DeBakey5
- Letter from Olavi Makela to Joshua Lederberg5
- Letter from Otto E. Landman to Joshua Lederberg5
- Letter from Owen H. Wangensteen to Clarence Dennis5
- Letter from Paul Berg to Daniel Nathans5
- Letter from Paul Berg to Donald S. Fredrickson5
- Letter from Paul F. Glenn to Joshua Lederberg5
- Letter from Perry W. Wilson to Joshua Lederberg5