1. Letter from Joshua Lederberg to L. C. Dunn Publication: Produced: 11 October 1972 Subject(s): Recombination, GeneticHistory of Medicine Archival Collection: The Oswald T. Avery Collection (Profiles in Science)
2. Letter from Joshua Lederberg to L. C. Dunn Publication: Produced: 18 October 1972 Subject(s): History of MedicineTransformation, Genetic Archival Collection: The Oswald T. Avery Collection (Profiles in Science)