Titles
- Letter from Joshua Lederberg to Barbara J. Bachmann11
- Letter from Joshua Lederberg to Francois Jacob11
- Letter from Joshua Lederberg to Frank Fenner11
- Letter from Joshua Lederberg to Gaylord Nelson11
- Letter from Joshua Lederberg to Harriet Zuckerman11
- Letter from Joshua Lederberg to Leo Szilard11
- Letter from Joshua Lederberg to Louis Dienes11
- Letter from Joshua Lederberg to Orio Ciferri11
- Letter from Joshua Lederberg to R. A. Brink11
- Letter from Joshua Lederberg to Seymour S. Cohen11
- Letter from Kenneth V. Thimann to Joshua Lederberg11
- Letter from Lloyd V. Berkner to Joshua Lederberg11
- Letter from O. H. Frankel to Joshua Lederberg11
- Letter from Palmer David Skaar to Joshua Lederberg11
- Letter from Pierre Fredericq to Joshua Lederberg11
- Letter from R. G. E. Murray to Joshua Lederberg11
- Letter from Raymond L. Latarjet to Joshua Lederberg11
- Letter from Raymond R. Roepke, American Cyanamid Company to Joshua Lederberg11
- Letter from Ruggero Ceppellini to Joshua Lederberg11
- Letter from Sydney D. Rubbo to Joshua Lederberg11