Titles
- Letter from Joshua Lederberg to Otto Kandler4
- Letter from Joshua Lederberg to Paul Doty4
- Letter from Joshua Lederberg to Phil R. Manning4
- Letter from Joshua Lederberg to Pnina Abir-Am4
- Letter from Joshua Lederberg to R. K. Froker4
- Letter from Joshua Lederberg to Reese Vaughn4
- Letter from Joshua Lederberg to Rene J. Dubos4
- Letter from Joshua Lederberg to Richard E. Smalley4
- Letter from Joshua Lederberg to Robert E. Kohler4
- Letter from Joshua Lederberg to Robert Mikulak, Arms Control and Disarmament Agency4
- Letter from Joshua Lederberg to Rodman C. Rockefeller4
- Letter from Joshua Lederberg to Ronald Cape, Cetus Corporation4
- Letter from Joshua Lederberg to Ruth Sager4
- Letter from Joshua Lederberg to S. H. Eisman4
- Letter from Joshua Lederberg to Seymour Kety4
- Letter from Joshua Lederberg to Seymour Pomper4
- Letter from Joshua Lederberg to Stanfield Rogers4
- Letter from Joshua Lederberg to Stuart Mudd4
- Letter from Joshua Lederberg to Theodore S. Hauschka4
- Letter from Joshua Lederberg to Udo Taubeneck4