State of Oklahoma
1914
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This map is annotated to show union areas (red).
This primary source comes from the Records of the Office of the Chief of Engineers.
Full Citation: State of Oklahoma; 1914; United States; War Department Map Collection, 1939 - 1942; Records of the Office of the Chief of Engineers, Record Group 77; National Archives at College Park, College Park, MD. [Online Version, https://www.docsteach.org/documents/document/oklahoma-map-1914-unions, May 16, 2024]