"Entwined in Conflict: The South Dakota State Prison Twine Factory and the Controversy of 1919-1921"
https://www.sdhspress.com/journal/south-dakota-history-35-2/entwined-in-conflict-the-south-dakota-state-prison-twine-factory-and-the-controversy-of-1919-1921
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"Entwined in Conflict: The South Dakota State Prison Twine Factory and the Controversy of 1919-1921"