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 Joshua Lederberg to Allen G. Marr Publication: Produced: 15 September 1952 Subject(s): Equipment and SuppliesIndicators and Reagents Archival Collection: The Joshua Lederberg Papers (Profiles in Science)