11. Letter from Barbara McClintock to Charles R. Burnham Publication: Produced: 13 April 1945 Subject(s): ChromosomesFellowships and Scholarships Archival Collection: The Barbara McClintock Papers (Profiles in Science)
12. Letter from Barbara McClintock to Charles R. Burnham Publication: Produced: 20 January 1950 Subject(s): ChromosomesMutationChromosome Breakage Archival Collection: The Barbara McClintock Papers (Profiles in Science)
13. Letter from Barbara McClintock to Charles R. Burnham Publication: Produced: 7 April 1930 Subject(s): ChromosomesGenetics Archival Collection: The Barbara McClintock Papers (Profiles in Science)
14. Letter from Barbara McClintock to Charles R. Burnham Publication: Produced: 1 March 1931 Subject(s): ChromosomesGeneticsGenes, Plant Archival Collection: The Barbara McClintock Papers (Profiles in Science)