Titles
- Letter from Joshua Lederberg to Bernard D. Davis3
- Letter from Joshua Lederberg to C. C. Lindegren3
- Letter from Joshua Lederberg to C. E. Clifton1
- Letter from Joshua Lederberg to C. H. Browning1
- Letter from Joshua Lederberg to David M. Bonner6
- Letter from Joshua Lederberg to E. S. Lindstrom1
- Letter from Joshua Lederberg to Edward L. Tatum1
- Letter from Joshua Lederberg to Edwin S. Lennox1
- Letter from Joshua Lederberg to Einar Leifson3
- Letter from Joshua Lederberg to Ernst H. Beutner1
- Letter from Joshua Lederberg to Ethel McNeil1
- Letter from Joshua Lederberg to George O. Carrington1
- Letter from Joshua Lederberg to Germaine Cohen-Bazire1
- Letter from Joshua Lederberg to Gerry Lindegren1
- Letter from Joshua Lederberg to Gertud E. Mislap1
- Letter from Joshua Lederberg to Helen Kann1
- Letter from Joshua Lederberg to I. D. Michelson1
- Letter from Joshua Lederberg to Ilda McVeigh1
- Letter from Joshua Lederberg to J. Oliver Lampen1
- Letter from Joshua Lederberg to J. S. K. Boyd1