1958 Map of Keystone Dam

About this map

Keystone Dam Under Construction dominates the confluence of the Arkansas River and Cimarron River, marking a transformative moment for this Oklahoma landscape. This 1958 survey captures the region just before the waters of the new reservoir fundamentally altered the local geography. Small communities such as Keystone, Appalachia, and Prue are still depicted in their original locations, providing a vital record for genealogists and local historians. The map also traces the routes of the Missouri Kansas Texas and St Louis San Francisco railroads as they navigate the river valleys and the Osage Indian Reservation Boundary. Numerous oil wells and scattered family landmarks like Sinnett Cem, Leroy Cem, and Rigsby Sch reflect the rural, resource-driven economy of the late 1950s.