Titles
- Letter from Joshua Lederberg to Arthur Kornberg22
- Letter from Joshua Lederberg to Evelyn Witkin22
- Letter from Luca Cavalli-Sforza to William Hayes22
- Letter from Roger Y. Stanier to Joshua Lederberg22
- Letter from Wolfram Heumann to Joshua Lederberg22
- Letter from Joshua Lederberg to David M. Bonner21
- Letter from Joshua Lederberg to Thomas C. Nelson21
- Letter from Joshua Lederberg to William Hayes21
- Postcard from Karl Paul Link to Joshua Lederberg21
- The dispensatory of the United States of America21
- Letter from David M. Bonner to Joshua Lederberg20
- Letter from Edward A. Adelberg to Joshua Lederberg20
- Letter from Joshua Lederberg to Boris Rotman20
- Letter from Joshua Lederberg to Torbjorn Caspersson20
- Letter from M. Demerec to Tracy M. Sonneborn20
- Letter from Torbjorn Caspersson to Joshua Lederberg20
- Memorandum from Roland L. Peterson to United States. Bureau of Health Resources Development20
- Letter from Alexander Hollaender to Joshua Lederberg19
- Letter from Joshua Lederberg to A. D. Hershey19
- Letter from Joshua Lederberg to C. B. Van Niel19