31. Letter from Joshua Lederberg to Salvador E. Luria Publication: Produced: 7 April 1954 Subject(s): Cell Culture TechniquesResearch Design Archival Collection: The Joshua Lederberg Papers (Profiles in Science)
32. Letter from Joshua Lederberg to Werner K. Maas Publication: Produced: 8 July 1951 Subject(s): Genetics, MicrobialRecombination, GeneticResearch Design Archival Collection: The Joshua Lederberg Papers (Profiles in Science)
33. Letter from Frank Davis, United States Department of Agriculture to Joshua Lederberg Publication: Produced: 21 April 1950 Subject(s): Research Design Archival Collection: The Joshua Lederberg Papers (Profiles in Science)
34. Letter from Joshua Lederberg to Frank Davis, United States Department of Agriculture Publication: Produced: 11 April 1950 Subject(s): Research Design Archival Collection: The Joshua Lederberg Papers (Profiles in Science)
35. Letter from Joshua Lederberg to Mario U. Dianzani Publication: Produced: 9 January 1951 Subject(s): Escherichia coliMutationResearch Design Archival Collection: The Joshua Lederberg Papers (Profiles in Science)
36. Letter from Joshua Lederberg to H. J. Muller Publication: Produced: 15 March 1950 Subject(s): Mutagenicity TestsResearch Design Archival Collection: The Joshua Lederberg Papers (Profiles in Science)
37. Letter from H. J. Muller to Joshua Lederberg Publication: Produced: 16 March 1950 Subject(s): Mutagenicity TestsResearch Design Archival Collection: The Joshua Lederberg Papers (Profiles in Science)
38. Pages from Nirenberg's laboratory journal titled "Major Problems [of Neurobiology]" Publication: Produced: 6 September 1966 Subject(s): NeurobiologyResearch Design Archival Collection: The Marshall W. Nirenberg Papers (Profiles in Science)
39. Notes from Neurosciences Research Program meeting Publication: Produced: 4 February 1968 Subject(s): NeurobiologyGeneticsResearch Design Archival Collection: The Marshall W. Nirenberg Papers (Profiles in Science)
40. Pages from Nirenberg's laboratory journal titled "Genetic vs. Neural Codes" Publication: Produced: 9 March 1968 Subject(s): NeuronsSynapsesGenetic CodeResearch Design Archival Collection: The Marshall W. Nirenberg Papers (Profiles in Science)