1. Letter from Joshua Lederberg to Einar Leifson Publication: Produced: 8 September 1955 Subject(s): Cell Culture TechniquesResearch Archival Collection: The Joshua Lederberg Papers (Profiles in Science)
2. Letter from Joshua Lederberg to Einar Leifson Publication: Produced: 11 September 1955 Subject(s): Cell Culture TechniquesFlagellaResearch Archival Collection: The Joshua Lederberg Papers (Profiles in Science)
3. Letter from Joshua Lederberg to E. S. Lindstrom Publication: Produced: 5 October 1953 Subject(s): Cell Culture TechniquesResearchResearch Personnel Archival Collection: The Joshua Lederberg Papers (Profiles in Science)