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2. Ayres, Homer. Oral history interview by Earle Hausle. Sturgis, SD. Tape #0187 transcript on file at the South Dakota Oral History Center, University of South Dakota, Vermillion, SD, June 28, 1971.
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5. Browne, William P. and John Dinse. “The Emergence of the American Agriculture Movement, 1977–1979.” Great Plains Quarterly 5, no. 4 (1985): 221–235.