1. A Correlation of Cytological and Genetical Crossing-Over in Zea Mays Publication: National Academy Press (U.S.), 1931 Subject(s): Zea maysCrossing Over, GeneticChromosomesMeiosis Archival Collection: The Barbara McClintock Papers (Profiles in Science)
2. 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)
3. Letter from Barbara McClintock to Charles R. Burnham Publication: Produced: 25 September 1931 Subject(s): Zea maysChromosomesCrossing Over, Genetic Archival Collection: The Barbara McClintock Papers (Profiles in Science)