1. Notecard with photo of the yellow fever laboratory in Rio de Janeiro, and inset photos of rhesus monkeys in lower corners Publication: Produced: [ca. 1938] Archival Collection: The Fred L. Soper Papers (Profiles in Science)
2. Letter from S. Gaylen Bradley to Joshua and Esther Lederberg Publication: Produced: 24 August 1960 Archival Collection: The Joshua Lederberg Papers (Profiles in Science)