Titles
- Letter from Joshua Lederberg to G. J. V. Nossal, Walter & Eliza Hall Institute of Medical Research18
- Letter from Joshua Lederberg to Herman M. Kalckar18
- Letter from Joshua Lederberg to Howard Simons, Washington Post18
- Letter from Joshua Lederberg to Norman H. Horowitz18
- Letter from Joshua Lederberg to Philip Handler18
- Letter from Alexander Hollaender to Joshua Lederberg17
- Letter from Joshua Lederberg to Eugene Garfield17
- Letter from Joshua Lederberg to George W. Beadle17
- Letter from Joshua Lederberg to Howard B. Newcombe17
- Letter from Joshua Lederberg to John Z. Bowers17
- Letter from Werner Braun to Joshua Lederberg17
- Letter from Joshua Lederberg to Clive C. Spicer16
- Letter from Joshua Lederberg to Gordon Allen16
- Letter from Joshua Lederberg to Martin M. Kaplan, World Health Organization16
- Excerpt from Alan Gregg's Brazil diary15
- Letter from Joshua Lederberg to Barton Childs15
- Letter from Joshua Lederberg to C. A. Elvehjem15
- Letter from Joshua Lederberg to John A. Moore15
- Letter from Joshua Lederberg to Sydney D. Rubbo15
- Letter from Joshua Lederberg to Tetsuo Iino15