1. Letter from Joshua Lederberg to James W. Bartholomew Publication: Produced: 13 June 1949 Subject(s): Genetics, MicrobialTeaching Archival Collection: The Joshua Lederberg Papers (Profiles in Science)
2. Letter from Joshua Lederberg to Michael Doudoroff Publication: Produced: 22 November 1948 Subject(s): Genetics, MicrobialTeaching Archival Collection: The Joshua Lederberg Papers (Profiles in Science)
3. Letter from Joshua Lederberg to Ralph Emerson Publication: Produced: 12 October 1949 Subject(s): Genetics, MicrobialTeaching Archival Collection: The Joshua Lederberg Papers (Profiles in Science)
4. Letter from Joshua Lederberg to Bernard D. Davis Publication: Produced: 31 October 1949 Subject(s): Cell Culture TechniquesGenetics, MicrobialTeaching Archival Collection: The Joshua Lederberg Papers (Profiles in Science)