Titles
- Letter from Wolfram Heumann to Joshua Lederberg3
- Letter from Boris Rotman to Esther Lederberg2
- Letter from Boris Rotman to Joshua Lederberg2
- Letter from Carl Djerassi to Joshua Lederberg2
- Letter from E. M. Kratz, Mono-Sol Corporation to Joshua Lederberg2
- Letter from Elisabeth Goldschmidt to Joshua Lederberg2
- Letter from Elizabeth S. (Tibby) Russell to Joshua Lederberg2
- Letter from Ernest C. Pollard to Joshua Lederberg2
- Letter from Eugene Garfield, Institute for Scientific Information to Joshua Lederberg2
- Letter from Francis Crick to Arthur Kornberg2
- Letter from Francis J. Ryan to Joshua Lederberg2
- Letter from G. A. Derbyshire to Joshua Lederberg2
- Letter from George W. Beadle to Joshua Lederberg2
- Letter from Guido Pontecorvo to Joshua Lederberg2
- Letter from Jack L. Strominger to Joshua Lederberg2
- Letter from James D. Watson to Francis Crick2
- Letter from John Burton Sanderson Haldane to Joshua Lederberg2
- Letter from John R. Platt to Joshua Lederberg2
- Letter from John W. Wall to John E. Fogarty2
- Letter from Joshua L. Edwards, University of Florida College of Medicine to Joshua Lederberg2