21. Letter from Joshua Lederberg to Cy Levinthal Publication: Produced: 13 September 1972 Subject(s): Recombination, GeneticHistory of MedicineArchives Archival Collection: The Oswald T. Avery Collection (Profiles in Science)
22. Letter from Joshua Lederberg to Marion Himes Publication: Produced: 14 September 1972 Subject(s): Recombination, GeneticHistory of Medicine Archival Collection: The Oswald T. Avery Collection (Profiles in Science)
23. Letter from Joshua Lederberg to Arnold W. Ravin Publication: Produced: 6 October 1972 Subject(s): Transformation, GeneticHistory of Medicine Archival Collection: The Oswald T. Avery Collection (Profiles in Science)
24. Letter from Joshua Lederberg to Alfred E. Mirsky Publication: Produced: 2 November 1972 Subject(s): History of Medicine Archival Collection: The Oswald T. Avery Collection (Profiles in Science)
25. 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)
26. 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)
27. Memo of telephone conversation with Kim Atwood about the early 1940s Publication: Produced: 12 October 1972 Subject(s): History of Medicine Archival Collection: The Oswald T. Avery Collection (Profiles in Science)
28. Letter from Joshua Lederberg to Gabriele Ehrlich Publication: Produced: 13 October 1972 Subject(s): History of MedicineRecombination, Genetic Archival Collection: The Oswald T. Avery Collection (Profiles in Science)
29. Letter from Joshua Lederberg to Martin R. Pollock Publication: Produced: 18 October 1972 Subject(s): History of Medicine Archival Collection: The Oswald T. Avery Collection (Profiles in Science)
30. Letter from Joshua Lederberg to Martin R. Pollock Publication: Produced: 26 December 1972 Subject(s): History of Medicine Archival Collection: The Oswald T. Avery Collection (Profiles in Science)