41. 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)
42. Letter from Oliver E. Nelson, Jr. to Barbara McClintock Publication: Produced: 13 May 1970 Subject(s): Zea maysGenes, PlantGenetics Archival Collection: The Barbara McClintock Papers (Profiles in Science)