Titles
- Letter from Curt Stern to Joshua Lederberg2
- Letter from Edward L. Tatum to Joshua Lederberg2
- Letter from Evelyn Witkin to Joshua Lederberg2
- Letter from Frede B. Strandskov to Joshua Lederberg2
- Letter from Fritz Kauffmann to Joshua Lederberg2
- Letter from Herman N. Eisen to Joshua Lederberg2
- Letter from M. Demerec to Tracy M. Sonneborn2
- Letter from P. R. Edwards to Joshua Lederberg2
- Letter from Ralph G. Meader to Aura E. Severinghaus2
- Letter from Raymond R. Roepke, American Cyanamid Company to Joshua Lederberg2
- Letter from Sol Spiegelman to Joshua Lederberg2
- Letter from Tracy M. Sonneborn to Joshua Lederberg2
- Letter from the Journal of the American Medical Association to Charles R. Drew2
- [Joseph H. McNinch]2
- Achievements of UNRRA as an International Health Organization1
- Associazione Medici Cattolici Italiani1
- Barbara McClintock1
- Barbara McClintock in lab1
- Carl R. Rogers1
- Charles Drew teaching interns and residents during rounds at Freedmen's Hospital1