1. Components of Action of the Regulators Spm and Ac Publication: Carnegie Institution of Washington, 1965 Subject(s): Gene Expression RegulationZea maysChromosomes Archival Collection: The Barbara McClintock Papers (Profiles in Science)
2. 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)
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)