Titles
- Letter from Peter Mitchell to Joshua Lederberg3
- Letter from Raymond L. Latarjet to Joshua Lederberg3
- Letter from Robert W. Briggs to Joshua Lederberg3
- Letter from Rosalind Franklin to H. Fraenkel-Conrat3
- Letter from S. Gaylen Bradley to Joshua and Esther Lederberg3
- Letter from W. Eugene Knox to Joshua Lederberg3
- Letter from Abe Eisenstark to Joshua Lederberg2
- Letter from B. A. D. Stocker to Joshua Lederberg2
- Letter from F. C. Bawden to Rosalind Franklin2
- Letter from Francis Crick to Joshua Lederberg2
- Letter from Francois Jacob to Joshua Lederberg2
- Letter from Frank Ogden to Lawrence Kolb2
- Letter from Frits Orskov to Joshua Lederberg2
- Letter from Frits and Ida Orskov to Joshua Lederberg2
- Letter from G. Kelemen to Joshua Lederberg2
- Letter from George Streisinger to Joshua Lederberg2
- Letter from Gordon Allen to Joshua Lederberg2
- Letter from Hilary Koprowski to Joshua Lederberg2
- Letter from Jean Weigle to Joshua Lederberg2
- Letter from Jerry Donohue to Francis Crick2