1. Letter from Allen G. Marr to Joshua Lederberg Publication: Produced: 5 September 1952 Subject(s): Genetics, MicrobialEquipment and SuppliesStaining and Labeling Archival Collection: The Joshua Lederberg Papers (Profiles in Science)
2. Letter from Ross E. McKinney to Joshua Lederberg Publication: Produced: 16 December 1953 Subject(s): Equipment and SuppliesStaining and Labeling Archival Collection: The Joshua Lederberg Papers (Profiles in Science)