Titles
- Letter from Joshua Lederberg to Jacques Monod4
- Letter from Joshua Lederberg to Sol Spiegelman4
- Letter from M. Demerec to Tracy M. Sonneborn4
- Letter from Robert Guthrie to Joshua Lederberg4
- Postcard from Aaron Novick to Joshua Lederberg4
- Letter from Edward L. Tatum to George W. Beadle3
- Letter from Elizabeth M. Mester to Joshua Lederberg3
- Letter from Evelyn Witkin to Joshua Lederberg3
- Letter from Francis J. Ryan to Joshua Lederberg3
- Letter from George W. Beadle to Joshua Lederberg3
- Letter from Gordon Allen to Joshua Lederberg3
- Letter from Joshua Lederberg to Albert P. Krueger3
- Letter from Joshua Lederberg to David M. Bonner3
- Letter from Joshua Lederberg to Dennis Flanagan3
- Letter from Joshua Lederberg to James M. Sherman3
- Letter from Joshua Lederberg to Leland W. Parr3
- Letter from Norton D. Zinder to Joshua Lederberg3
- Letter from Raymond L. Latarjet to Joshua Lederberg3
- Letter from Tracy M. Sonneborn to M. Demerec3
- Letter from Tracy M. Sonneborn to Max Delbruck3