Titles
- Letter from S. C. Rittenberg to Joshua Lederberg6
- Letter from Tracy M. Sonneborn to Joshua Lederberg6
- Letter from Ward Pigman to Joshua Lederberg6
- Nursery school6
- Postcard from Salvador E. Luria to Joshua Lederberg6
- [Maude Callen]6
- Letter from Barbara McClintock to Joshua Lederberg5
- Letter from Bernard O. Dodge to George W. Beadle5
- Letter from Fritz Kauffmann to Joshua Lederberg5
- Letter from George W. Beadle to Bernard O. Dodge5
- Letter from Kenneth A. Bisset to Joshua Lederberg5
- Letter from Norton D. Zinder to Joshua Lederberg5
- Letter from P. R. Edwards to Joshua Lederberg5
- Letter from R. A. Brink to Joshua Lederberg5
- Letter from Samuel Graff to Joshua Lederberg5
- Letter from Seymour S. Cohen to Joshua Lederberg5
- Letter from Tracy M. Sonneborn to Sol Spiegelman5
- Letter from Barbara McClintock to Charles R. Burnham4
- Letter from Charles A. Doan to Florence R. Sabin4
- Letter from Chester Bowles to Mary Lasker4