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Continue to ChatShirley Knob Map - Huntingdon County, PA https://www.yellowmaps.com/usgs/topo.cfm?map=pa-1187565-shirley-knob
Shirley Knob Map - Huntingdon County, PA https://www.yellowmaps.com/usgs/topo.cfm?map=pa-1187565-shirley-knob