Titles
- Letter from Howard M. Cann to Joshua Lederberg5
- Letter from Hugh Odishaw to Joshua Lederberg5
- Letter from John A. Moore to Joshua Lederberg5
- Letter from John Burton Sanderson Haldane to Joshua Lederberg5
- Letter from Paul F. Glenn to Joshua Lederberg5
- Letter from Philip Goldstein to Joshua Lederberg5
- Letter from Salvador E. Luria to Joshua Lederberg5
- Letter from Alexander Bodi, Palo Alto Times to Joshua Lederberg4
- Letter from Arne Tiselius to Joshua Lederberg4
- Letter from Barton Childs to Joshua Lederberg4
- Letter from Bernard Rimland to Joshua Lederberg4
- Letter from Chris D. Calsoyas to Joshua Lederberg4
- Letter from Daniel Mazia to Joshua Lederberg4
- Letter from Emile Zuckerkandl to Joshua Lederberg4
- Letter from F. Egami to Joshua Lederberg4
- Letter from Francis Crick to Jacques Monod4
- Letter from Frank Fenner to Joshua Lederberg4
- Letter from Frits and Ida Orskov to Joshua Lederberg4
- Letter from G. A. Derbyshire to Joshua Lederberg4
- Letter from H. Gobind Khorana to Francis Crick4