Titles
- Letter from Joshua Lederberg to R. S. Benham5
- Letter from Joshua Lederberg to Richard L. Masland5
- Letter from Joshua Lederberg to Richard W. Lyman5
- Letter from Joshua Lederberg to Riley D. Housewright5
- Letter from Joshua Lederberg to Robert S. Morison, Rockefeller Foundation5
- Letter from Joshua Lederberg to Robert Tulasne5
- Letter from Joshua Lederberg to Rollin D. Hotchkiss5
- Letter from Joshua Lederberg to Stephen Fazekas, John Curtin School of Medical Research5
- Letter from Joshua Lederberg to Susan E. Garfield5
- Letter from Joshua Lederberg to Theodore T. Puck5
- Letter from Joshua Lederberg to Thomas E. Drohan, Foremost-McKesson, Inc.5
- Letter from Joshua Lederberg to Thomas H. Kuchel5
- Letter from Joshua Lederberg to W. H. Freeman, W. H. Freeman and Company5
- Letter from Joshua Lederberg to Ward Pigman5
- Letter from K. Bhaskaran to Joshua Lederberg5
- Letter from L. C. Dunn to Joshua Lederberg5
- Letter from Linda H. Clever to Joshua Lederberg5
- Letter from Lister Hill to Mary Lasker5
- Letter from Louis Dublin to Lee Frankel5
- Letter from Lynferd J. Wickerham to Joshua Lederberg5