Titles
- Letter from Joshua Lederberg to A. Felix5
- Letter from Joshua Lederberg to E. S. Anderson5
- Letter from Shozo Inoki to Joshua Lederberg5
- Letter from Werner Braun to Joshua Lederberg5
- Letter from Frank Fenner to Joshua Lederberg4
- Letter from James D. Watson to Joshua Lederberg4
- Letter from Joshua Lederberg to Alice Moran4
- Letter from Joshua Lederberg to Clive C. Spicer4
- Letter from Joshua Lederberg to Louis S. Baron4
- Letter from Joshua Lederberg to Norton D. Zinder4
- Letter from Joshua Lederberg to Salvador E. Luria4
- Letter from Joshua Lederberg to Selman A. Waksman4
- Letter from Joshua Lederberg to Werner Braun4
- Letter from Lawrence L. Weed to Joshua Lederberg4
- Letter from Selman A. Waksman to Joshua Lederberg4
- Letter from Tracy M. Sonneborn to Joshua Lederberg4
- Letter from A. D. Hershey to Joshua Lederberg3
- Letter from Boris Rotman to Joshua Lederberg3
- Letter from Derrick Rowley to Joshua Lederberg3
- Letter from Frank P. Hungate to Joshua Lederberg3