1. Letter from Barbara McClintock to Charles R. Burnham Publication: Produced: 26 June 1931 Subject(s): GeneticsZea maysMutation Archival Collection: The Barbara McClintock Papers (Profiles in Science)
2. 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)