1. Letter from Joshua Lederberg to Werner K. Maas Publication: Produced: 8 July 1951 Subject(s): Genetics, MicrobialRecombination, GeneticResearch Design Archival Collection: The Joshua Lederberg Papers (Profiles in Science)
2. Letter from Joshua Lederberg to Werner K. Maas Publication: Produced: 29 February 1952 Subject(s): Cell Culture TechniquesGenetics, Microbial Archival Collection: The Joshua Lederberg Papers (Profiles in Science)
3. Letter from Joshua Lederberg to Werner K. Maas Publication: Produced: 27 March 1952 Subject(s): Genetics, Microbial Archival Collection: The Joshua Lederberg Papers (Profiles in Science)