Titles
- Letter from Don A. Gordon to Joshua Lederberg1
- Letter from Douglas R. Knott to Joshua Lederberg2
- Letter from E. S. Anderson to Joshua Lederberg4
- Letter from Eaton Laboratories to Thomas C. Nelson1
- Letter from Edgar Altenburg to Joshua Lederberg3
- Letter from Edward A. Steinhaus to Joshua Lederberg1
- Letter from Edward D. DeLamater to Joshua Lederberg2
- Letter from Edward L. Tatum to Albert Waugh1
- Letter from Edward L. Tatum to D. H. Wenrich1
- Letter from Edward L. Tatum to Geoffrey Rake, Squibb Institute for Medical Research1
- Letter from Edward L. Tatum to Joshua Lederberg5
- Letter from Einar Leifson to B. A. D. Stocker1
- Letter from Elie Wollman to Joshua and Esther Lederberg1
- Letter from Elizabeth M. Mester to Joshua Lederberg1
- Letter from Elizabeth and Francis J. Ryan to Joshua and Esther Lederberg1
- Letter from Ellis Englesberg to Joshua Lederberg2
- Letter from Emma Klieneberger-Nobel to Joshua Lederberg5
- Letter from Erich Seligmann to Joshua Lederberg1
- Letter from Erling J. Ordal to Joshua Lederberg1
- Letter from Esmond E. Snell to Joshua Lederberg2