31. Letter from Almiro Blumenschein to Barbara McClintock Publication: Produced: 5 August 1966 Subject(s): South AmericaGeneticsZea maysChromosomes Archival Collection: The Barbara McClintock Papers (Profiles in Science)
32. Letter from Barbara McClintock to Almiro Blumenschein Publication: Produced: 20 August 1966 Subject(s): ChromosomesZea maysCooperative BehaviorMaps as Topic Archival Collection: The Barbara McClintock Papers (Profiles in Science)
33. Letter from Barbara McClintock to Almiro Blumenschein Publication: Produced: 30 November 1966 Subject(s): ChromosomesZea mays Archival Collection: The Barbara McClintock Papers (Profiles in Science)
34. Letter from Barbara McClintock to F. G. Brieger Publication: Produced: 2 April 1962 Subject(s): ChromosomesZea mays Archival Collection: The Barbara McClintock Papers (Profiles in Science)
35. Memorandum from Barbara McClintock to William L. Brown Publication: Produced: February 1962 Subject(s): ChromosomesGeneticsGenes, PlantZea mays Archival Collection: The Barbara McClintock Papers (Profiles in Science)
36. Letter from Barbara McClintock to William L. Brown Publication: Produced: 9 August 1966 Subject(s): ChromosomesZea maysMexicoCentral AmericaSouth America Archival Collection: The Barbara McClintock Papers (Profiles in Science)
37. Letter from Barbara McClintock to William L. Brown Publication: Produced: 19 January 1969 Subject(s): DNAChromosomes Archival Collection: The Barbara McClintock Papers (Profiles in Science)
38. Letter from Barbara McClintock to William L. Brown Publication: Produced: 24 July 1974 Subject(s): Zea maysChromosomesMaps as Topic Archival Collection: The Barbara McClintock Papers (Profiles in Science)
39. Controlling Elements and the Gene Publication: Cold Spring Harbor Laboratory. Press, 1956 Subject(s): PhenotypeGenes, PlantGene ExpressionChromosomes Archival Collection: The Barbara McClintock Papers (Profiles in Science)
40. Letter from Charles R. Burnham to Barbara McClintock Publication: Produced: 18 March 1984 Subject(s): Zea maysChromosomesCytogenetics Archival Collection: The Barbara McClintock Papers (Profiles in Science)