
The Allegheny River carves a deep path through the northern coal and oil country of western Pennsylvania, where the borders of Butler, Armstrong, and Clarion counties converge. This landscape is defined by the heavy footprint of extractive industry, featuring numerous strip mines and oil wells that dot the uplands. Settlements like Petrolia, Parker, and West Monterey are clustered near the river and rail lines, including the Baltimore and Ohio and Conrail networks.
57 named features on this map. Tap any name to fly to it.
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5 editions found
1900 · Kittanning
USGS Topo · 1:62,500
1902 · Kittanning
USGS Topo · 1:62,500
1907 · Foxburg
USGS Topo · 1:62,500
1908 · Foxburg
USGS Topo · 1:62,500
1909 · Butler
USGS Topo · 1:62,500
1910 · Hilliards
USGS Topo · 1:62,500
1911 · Butler
USGS Topo · 1:62,500
1912 · Hilliards
USGS Topo · 1:62,500
1944 · Hilliards
USGS Topo · 1:62,500
1953 · Pittsburgh
USGS Topo · 1:250,000