1. Letter from Barbara McClintock to Joshua Lederberg Publication: Produced: 8 November 1948 Subject(s): Recombination, GeneticRing ChromosomesCrossing Over, Genetic Archival Collection: The Barbara McClintock Papers (Profiles in Science)
2. Spontaneous Alterations in Chromosome Size and Form in Zea Mays Publication: Cold Spring Harbor Laboratory. Press, 1941 Subject(s): Zea maysChromosomesMutationGene Expression RegulationCrossing Over, GeneticChromosome BreakageRing Chromosomes Archival Collection: The Barbara McClintock Papers (Profiles in Science)