
The Allegheny River carves a deep, sinuous path through this 1963 landscape, meeting the Clarion River near Foxburg. This confluence serves as a nexus for the Pennsylvania and Baltimore and Ohio railroads, which track the riverbanks to serve the region's industrial interests. The map reveals an extensive Oil Field spanning much of the uplands, interspersed with numerous strip mines that mark the mid-century extraction economy of the Venango, Butler, and Clarion county borders.
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4 editions found
1907 · Foxburg
USGS Topo · 1:62,500
1908 · Foxburg
USGS Topo · 1:62,500
1909 · Franklin
USGS Topo · 1:62,500
1910 · Hilliards
USGS Topo · 1:62,500
1911 · Franklin
USGS Topo · 1:62,500
1912 · Hilliards
USGS Topo · 1:62,500
1922 · Oil City
USGS Topo · 1:48,000
1924 · Oil City
USGS Topo · 1:62,500
1943 · Oil City
USGS Topo · 1:62,500
1944 · Hilliards
USGS Topo · 1:62,500