Titles
- Letter from Joshua Lederberg to Pierre Fredericq5
- Letter from Wilbur A. Sawyer to Margaret Sawyer5
- Postcard from Gordon Allen to Joshua Lederberg5
- Letter from David M. Bonner to Joshua Lederberg4
- Letter from Howard B. Newcombe to Joshua Lederberg4
- Letter from Joshua Lederberg to David M. Bonner4
- Letter from Joshua Lederberg to L. C. Dunn4
- Letter from Joshua Lederberg to Luca Cavalli-Sforza4
- Letter from Joshua Lederberg to Raymond L. Latarjet4
- Letter from Joshua Lederberg to Thomas C. Nelson4
- Letter from Luca Cavalli-Sforza to Joshua Lederberg4
- Letter from Marguerite Vogt to Joshua Lederberg4
- Letter from Phyllis J. Fried to Joshua Lederberg4
- Letter from Sol Spiegelman to Joshua Lederberg4
- Letter from Thomas C. Nelson to Joshua Lederberg4
- Letter from Alfred J. Weil to Joshua Lederberg3
- Letter from Ellis Englesberg to Joshua Lederberg3
- Letter from Joshua Lederberg to Alfred J. Weil3
- Letter from Joshua Lederberg to Ellis Englesberg3
- Letter from Joshua Lederberg to Frederick L. Stone3