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"The Transformation of South Dakota Agriculture: The Effects of Mechanization, 1939-1964"

Download this article for free by clicking on the PDF file below. Winner of the 1990 Ray Allen Billington Prize Established in honor of the late Ray Allen Billington's leadership in the field of western history, this award recognizes excellence in historical publishing. The Western History Association presents the award annually to the publisher and author of the best journal article on western history (outside of the association's quarterly).