Titles
- Letter from Joshua Lederberg to Giovanni Magni7
- Letter from Joshua Lederberg to H. Bentley Glass7
- Letter from Joshua Lederberg to H. J. Muller7
- 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 R. A. Brink7
- Letter from Joshua Lederberg to Ralph A. Lewin7
- Letter from Joshua Lederberg to Richard Davies7
- Letter from Joshua Lederberg to Robert C. Olby7
- Letter from Joshua Lederberg to Robert K. Merton7
- Letter from Joshua Lederberg to Selman A. Waksman7
- Letter from Joshua Lederberg to Shozo Inoki7
- Letter from Joshua Lederberg to Thomas D. Brock7
- Letter from Joshua Lederberg to the New York Times7
- Letter from Kenneth McQuillen to Joshua Lederberg7
- Letter from Leonard Herzenberg to Joshua Lederberg7
- Letter from Mark Weidenbaum to Joshua Lederberg7
- Letter from Martin R. Pollock to Joshua Lederberg7
- Letter from Phil R. Manning to Joshua Lederberg7