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Continue to ChatLehigh Furnace Gap Map - Carbon County, PA https://www.yellowmaps.com/usgs/topo.cfm?map=pa-1192764-lehigh-furnace-gap
Lehigh Furnace Gap Map - Carbon County, PA https://www.yellowmaps.com/usgs/topo.cfm?map=pa-1192764-lehigh-furnace-gap