6. Letter from Michael Heidelberger to Clark W. Eichelberger, American Association for the United Nations Publication: Produced: 13 July 1948 Subject(s): United Nations Archival Collection: The Michael Heidelberger Papers (Profiles in Science)
7. Letter from Felix Haurowitz to Michael Heidelberger Publication: Produced: 10 February 1948 Subject(s): Allergy and ImmunologyAntigen-Antibody Reactions Archival Collection: The Michael Heidelberger Papers (Profiles in Science)
8. Letter from Raymond R. Roepke, American Cyanamid Company to Joshua Lederberg Publication: Produced: 7 July 1948 Archival Collection: The Joshua Lederberg Papers (Profiles in Science)
9. Guide to subject headings Publication: [Washington, D.C. : Army Medical Library, 1948?] Subject(s): Subject HeadingsMedicineLibraries, MedicalUnited StatesArmy Medical Library (U.S.)
10. Letter from Joshua Lederberg to Anthony M. Iannone Publication: Produced: 28 March 1948 Archival Collection: The Joshua Lederberg Papers (Profiles in Science)