1. Postcard from William J. Wiswesser to Joshua Lederberg Publication: Produced: August 1966 Archival Collection: The Joshua Lederberg Papers (Profiles in Science)
2. Postcard from William J. Wiswesser to Joshua Lederberg Publication: Produced: 30 March 1965 Archival Collection: The Joshua Lederberg Papers (Profiles in Science)