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Continue to ChatKnox-Valley Forge Dam Covered Bridge Map - Chester County, PA https://www.yellowmaps.com/usgs/topo.cfm?map=pa-2349231-knox%2Dvalley-forge-dam-covered-bridge
Knox-Valley Forge Dam Covered Bridge Map - Chester County, PA https://www.yellowmaps.com/usgs/topo.cfm?map=pa-2349231-knox%2Dvalley-forge-dam-covered-bridge