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Continue to ChatKeystone Colliery (historical) Map - Luzerne County, PA https://www.yellowmaps.com/usgs/topo.cfm?map=pa-1205536-keystone-colliery-%28historical%29
Keystone Colliery (historical) Map - Luzerne County, PA https://www.yellowmaps.com/usgs/topo.cfm?map=pa-1205536-keystone-colliery-%28historical%29