Titles
- Letter from Bernard D. Davis to Joshua Lederberg18
- Letter from Sol Spiegelman to Joshua Lederberg18
- Letter from Tracy M. Sonneborn to M. Demerec18
- Letter from Charles R. Drew to Lenore (Robbins) Drew17
- Letter from Florence R. Sabin to Mary Sabin17
- [Sigard Adolphus Knopf]16
- Excerpt from Alan Gregg's Brazil diary15
- Letter from Joshua Lederberg to Max Zelle15
- Letter from Max Zelle to Joshua Lederberg15
- Letter from Ralph G. Meader to Joshua Lederberg15
- Postcard from Edward L. Tatum to Joshua Lederberg15
- Letter from Francis J. Ryan to Joshua Lederberg14
- Letter from Joshua Lederberg to Aaron Novick14
- Letter from Linus Pauling to Warren Weaver14
- Letter from Walter Treadway to Lawrence Kolb14
- [Artificial limbs]: [Amputee with prosthesis, Philipines, 1940s(?)]14
- Letter from Joshua Lederberg to Jacques Monod13
- [Newton D. Baker]13
- [Radiation - Effects]13
- Letter from Alan Gregg to his wife12