1. Letter from Joshua Lederberg to R. S. Benham Publication: Produced: 16 February 1951 Subject(s): Cell Culture TechniquesEscherichia coliRecombination, Genetic Archival Collection: The Joshua Lederberg Papers (Profiles in Science)
2. Letter from Joshua Lederberg to Pierre Fredericq Publication: Produced: 30 October 1950 Subject(s): Cell Culture TechniquesEscherichia coli Archival Collection: The Joshua Lederberg Papers (Profiles in Science)
3. Letter from Joshua Lederberg to David M. Bonner Publication: Produced: 1950 Subject(s): Cell Culture TechniquesEscherichia coli Archival Collection: The Joshua Lederberg Papers (Profiles in Science)
4. Letter from Joshua Lederberg to Pierre Fredericq Publication: Produced: 21 November 1950 Subject(s): Cell Culture TechniquesEscherichia coli Archival Collection: The Joshua Lederberg Papers (Profiles in Science)
5. Letter from Ernst H. Beutner to Joshua Lederberg Publication: Produced: 7 October 1950 Subject(s): Escherichia coliCell Culture Techniques Archival Collection: The Joshua Lederberg Papers (Profiles in Science)
6. Letter from Joshua Lederberg to Raymond L. Latarjet Publication: Produced: 30 July 1950 Subject(s): Cell Culture TechniquesEscherichia coli Archival Collection: The Joshua Lederberg Papers (Profiles in Science)