11. Letter from Joshua Lederberg to Ellis Englesberg Publication: Produced: 24 December 1949 Subject(s): Fellowships and Scholarships Archival Collection: The Joshua Lederberg Papers (Profiles in Science)
12. Letter from Joshua Lederberg to Ellis Englesberg Publication: Produced: 16 April 1950 Subject(s): Fellowships and ScholarshipsMutagenicity Tests Archival Collection: The Joshua Lederberg Papers (Profiles in Science)