Titles
- Letter from Joshua Lederberg to Attallah Kappas7
- Letter from Joshua Lederberg to Bruno B. Rossi7
- Letter from Joshua Lederberg to Carl F. Robinow7
- Letter from Joshua Lederberg to Charles A. Stuart7
- Letter from Joshua Lederberg to D. H. Wenrich7
- Letter from Joshua Lederberg to David Perkins7
- Letter from Joshua Lederberg to Dennis Flanagan7
- Letter from Joshua Lederberg to Elise Cahn7
- Letter from Joshua Lederberg to Eunice Kennedy Shriver7
- Letter from Joshua Lederberg to G. J. V. Nossal7
- Letter from Joshua Lederberg to Giovanni Magni7
- Letter from Joshua Lederberg to H. Bentley Glass7
- Letter from Joshua Lederberg to James F. Leonard7
- Letter from Joshua Lederberg to Jerome B. Wiesner, President's Scientific Advisory Committee7
- Letter from Joshua Lederberg to Lawrence Okun7
- Letter from Joshua Lederberg to Marcus M. Rhoades7
- Letter from Joshua Lederberg to Max Delbruck7
- Letter from Joshua Lederberg to Ralph A. Lewin7
- Letter from Joshua Lederberg to Richard Davies7
- Letter from Joshua Lederberg to Robert C. Olby7