Titles
- Letter from Charles R. Burnham to Barbara McClintock4
- Letter from Charles Yanofsky to Joshua Lederberg4
- Letter from Charlotte A. Colwell to Joshua Lederberg4
- Letter from Chester Bowles to Mary Lasker4
- Letter from Chris D. Calsoyas to Joshua Lederberg4
- Letter from Clarence Dennis to Owen H. Wangensteen4
- Letter from Clifford Grobstein, National Cancer Institute to Joshua Lederberg4
- Letter from Cyril N. Hinshelwood to Joshua Lederberg4
- Letter from D. W. Bruner to Joshua Lederberg4
- Letter from Daniel Nathans to Ernest Winocour4
- Letter from David Talmage to Joshua Lederberg4
- Letter from Debi P. Burma to Maxine Singer4
- Letter from Donald L. D. Caspar to Rosalind Franklin4
- Letter from Edward Anders to Joshua Lederberg4
- Letter from Edward L. Tatum to Charles Yanofsky4
- Letter from Edward L. Tatum to R. A. Brink4
- Letter from Ernest C. Pollard to Joshua Lederberg4
- Letter from Ernest Winocour to Daniel Nathans4
- Letter from Ernst Mayr to Joshua Lederberg4
- Letter from Ernst Sorkin to Joshua Lederberg4