1. Letter from J. Oliver Lampen to Joshua Lederberg Publication: Produced: 16 September 1952 Subject(s): MethodsPreservation, Biological Archival Collection: The Joshua Lederberg Papers (Profiles in Science)
2. Letter from H. H. McKinney, United States Department of Agriculture to Joshua Lederberg Publication: Produced: 31 December 1951 Subject(s): Clinical Laboratory TechniquesPreservation, Biological Archival Collection: The Joshua Lederberg Papers (Profiles in Science)
3. Letter from Joshua Lederberg to H. H. McKinney, United States Department of Agriculture Publication: Produced: 2 January 1952 Subject(s): Preservation, Biological Archival Collection: The Joshua Lederberg Papers (Profiles in Science)
4. Letter from Joshua Lederberg to E. J. Czarnetzky Publication: Produced: 21 February 1953 Subject(s): Preservation, BiologicalClinical Laboratory Techniques Archival Collection: The Joshua Lederberg Papers (Profiles in Science)