1. Letter from Barbara McClintock to Charles R. Burnham Publication: Produced: 12 March 1931 Subject(s): ChromosomesGenes, PlantCrossing Over, Genetic Archival Collection: The Barbara McClintock Papers (Profiles in Science)
2. 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)
3. Draft of letter from Barbara McClintock to Angel Kato Publication: Produced: 1 August 1970 Subject(s): Zea maysChromosomesMaps as TopicGenes, Plant Archival Collection: The Barbara McClintock Papers (Profiles in Science)
