1. Letter from Almiro Blumenschein to R. W. Richardson, Jr. Publication: Produced: 2 August 1965 Subject(s): Zea maysFoundationsSouth America Archival Collection: The Barbara McClintock Papers (Profiles in Science)
2. 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)
3. Letter from William L. Brown to Almiro Blumenschein Publication: Produced: 30 August 1965 Subject(s): South AmericaZea maysGenetics Archival Collection: The Barbara McClintock Papers (Profiles in Science)
4. 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)
