Titles
- Letter from Herman M. Kalckar to Joshua Lederberg2
- Letter from Herman N. Eisen to Joshua Lederberg2
- Letter from Ivan Sorvall, Inc. to Joshua Lederberg2
- Letter from John Burton Sanderson Haldane to Joshua Lederberg2
- Letter from John T. Bonner to Joshua Lederberg2
- Letter from K. Bhaskaran to Joshua Lederberg2
- Letter from Kenneth A. Bisset to Joshua Lederberg2
- Letter from L. L. Waters to Joshua Lederberg2
- Letter from Leo Goldberg to Joshua Lederberg2
- Letter from M. L. Morse to Joshua and Esther Lederberg2
- Letter from Maurice Ewing to Joshua Lederberg2
- Letter from Michiham Kobayashi to Joshua Lederberg2
- Letter from Ole Maaloe to Joshua Lederberg2
- Letter from R. G. E. Murray to Joshua Lederberg2
- Letter from Ralph A. Lewin to Joshua Lederberg2
- Letter from Salvador E. Luria to Jacques Monod2
- Letter from Stephen Juhasz to Joshua Lederberg2
- Letter from W. H. Freeman, W. H. Freeman and Company to Joshua Lederberg2
- Letter from William H. Stone to Joshua Lederberg2
- Letter from William H. Stone to Joshua and Esther Lederberg2