Titles
- Letter from Robert C. Olby to Joshua Lederberg5
- Letter from Robert W. Briggs to Joshua Lederberg5
- Letter from Roger S. Mitchell, University of Colorado Medical Center to Joshua Lederberg5
- Letter from Roy D. Schmickel to Daniel Nathans5
- Letter from Sara Gerling to Joshua Lederberg5
- Letter from Sidney Raffel to Joshua Lederberg5
- Letter from Simon Flexner to Florence R. Sabin5
- Letter from Sol H. Goodgal to Joshua Lederberg5
- Letter from Sol Spiegelman to Martin R. Pollock5
- Letter from Stephen Fazekas, John Curtin School of Medical Research to Joshua Lederberg5
- Letter from Tetsu Nakayama to Joshua Lederberg5
- Letter from Thomas E. Drohan, Foremost-McKesson, Inc. to Joshua Lederberg5
- Letter from Thomas F. Anderson to Joshua Lederberg5
- Letter from Udo Taubeneck to Joshua Lederberg5
- Letter from W. A. Johnson to William Osler5
- Letter from W. J. Halliday to Joshua Lederberg5
- Letter from Wayne C. Jaeschke to Joshua Lederberg5
- Letter from William D. McElroy to Joshua Lederberg5
- Letter from William Osler to H. A. Lafleur [Transcript]5
- Letter from Yehuda Elkana to Joshua Lederberg5