1. Letter from Donald S. Fredrickson to Daniel E. Koshland, Jr Publication: Produced: 23 August 1976 Subject(s): National Academy of Sciences (U.S.)Plasmids Archival Collection: The Maxine Singer Papers (Profiles in Science)
2. Speech by Maxine Singer at a National Academy of Sciences/Smithsonian Institution symposium Publication: Produced: 27 October 1989 Subject(s): National Academy of Sciences (U.S.) Archival Collection: The Maxine Singer Papers (Profiles in Science)
