1. Letter from A. A. Buzzati-Traverso to Luca Cavalli-Sforza Publication: Produced: 16 November 1957 Archival Collection: The Joshua Lederberg Papers (Profiles in Science)
2. Letter from Giacinto Bollea to Joshua Lederberg Publication: Produced: 1 February 1960 Archival Collection: The Joshua Lederberg Papers (Profiles in Science)