31. Letter from Joshua Lederberg to John Loutit Publication: Produced: 20 January 1951 Subject(s): X-RaysMutation Archival Collection: The Joshua Lederberg Papers (Profiles in Science)
32. Letter from Joshua Lederberg to Salvador E. Luria Publication: Produced: 29 July 1946 Subject(s): Genetics, MicrobialMutation Archival Collection: The Joshua Lederberg Papers (Profiles in Science)
33. Letter from Joshua Lederberg to Salvador E. Luria Publication: Produced: 13 January 1947 Subject(s): BacteriophagesMutation Archival Collection: The Joshua Lederberg Papers (Profiles in Science)
34. Letter from Joshua Lederberg to Salvador E. Luria Publication: Produced: 30 November 1947 Subject(s): MutationRecombination, Genetic Archival Collection: The Joshua Lederberg Papers (Profiles in Science)
35. Letter from Joshua Lederberg to Salvador E. Luria Publication: Produced: 27 January 1949 Subject(s): MutationRecombination, GeneticResearch Archival Collection: The Joshua Lederberg Papers (Profiles in Science)
36. Letter from Joshua Lederberg to Ellis Englesberg Publication: Produced: 12 January 1950 Subject(s): Escherichia coliMutation Archival Collection: The Joshua Lederberg Papers (Profiles in Science)
37. Letter from Werner K. Maas to Joshua Lederberg Publication: Produced: 19 June 1950 Subject(s): Cell Culture TechniquesMutation Archival Collection: The Joshua Lederberg Papers (Profiles in Science)
38. Letter from Werner K. Maas to Joshua Lederberg Publication: Produced: 19 September 1952 Subject(s): Cell Culture TechniquesMutation Archival Collection: The Joshua Lederberg Papers (Profiles in Science)
39. Letter from Joshua Lederberg to Robert J. Mandle Publication: Produced: 9 June 1949 Subject(s): Cell Culture TechniquesGenetics, MicrobialMutation Archival Collection: The Joshua Lederberg Papers (Profiles in Science)
40. Letter from Joshua Lederberg to Kenneth Mather Publication: Produced: 16 May 1947 Subject(s): BacteriophagesGenetics, MicrobialMutation Archival Collection: The Joshua Lederberg Papers (Profiles in Science)