Titles
- Letter from Clifford Grobstein to Joshua Lederberg6
- Letter from David M. Mumford to Joshua Lederberg6
- Letter from David R. Goddard to Joshua Lederberg6
- Letter from Derrick Rowley to Joshua Lederberg6
- Letter from Edouard Kellenberger to Joshua Lederberg6
- Letter from Edward E. David, Jr. to Joshua Lederberg6
- Letter from Eileen Rockefeller to Joshua Lederberg6
- Letter from Ernst Friedheim to Joshua Lederberg6
- Letter from Francis Crick to Jerry Donohue6
- Letter from Frank H. T. Rhodes to Joshua Lederberg6
- Letter from Frits Orskov to Joshua Lederberg6
- Letter from Grace Osler to her sister, Susan Chapin [Transcript]6
- Letter from Harold C. Urey to Joshua Lederberg6
- Letter from Herman M. Kalckar to Joshua and Esther Lederberg6
- Letter from Howard M. Cann to Joshua Lederberg6
- Letter from Irvine H. Page to Joshua Lederberg6
- Letter from Jean Weigle to Joshua Lederberg6
- Letter from Jerry Donohue to Francis Crick6
- Letter from Joshua Lederberg to A. R. Gopal-Ayengar6
- Letter from Joshua Lederberg to Abraham A. Ribicoff6