1. Letter from K. V. Kossikov to Joshua Lederberg Publication: Produced: 12 January 1958 Archival Collection: The Joshua Lederberg Papers (Profiles in Science)
2. Letter from K. V. Kossikov to Joshua Lederberg Publication: Produced: 18 July 1957 Archival Collection: The Joshua Lederberg Papers (Profiles in Science)