21. Letter from Luder Temmen to Joshua Lederberg [German version] Publication: Produced: 31 July 1973 Archival Collection: The Joshua Lederberg Papers (Profiles in Science)
22. Letter from Walther Klofat to Otto Westphal Publication: Produced: 10 October 1975 Archival Collection: The Joshua Lederberg Papers (Profiles in Science)
