Titles
- Letter from Joshua Lederberg to Lois Larkin4
- Letter from Joshua Lederberg to M. C. Winternitz4
- Letter from Joshua Lederberg to Margery W. Shaw4
- Letter from Joshua Lederberg to Marguerite Vogt4
- Letter from Joshua Lederberg to Marjorie Bohnhoff4
- Letter from Joshua Lederberg to McGeorge Bundy4
- Letter from Joshua Lederberg to Nils Fries4
- Letter from Joshua Lederberg to Orr Reynolds4
- Letter from Joshua Lederberg to Orville G. Brim, Jr., Russell Sage Foundation4
- 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