
The Allegheny River valley and its surrounding highlands define this portion of McKean County, where the industrial legacy of the Bradford Oil Field is written across the landscape. By the late 1960s, a dense network of oil wells and unimproved roads permeated the hills near Duke Center and Prentisvale, illustrating the area's continued reliance on petroleum extraction. Along the eastern edge of the quadrangle, the Conrail line parallels the river, connecting the primary settlement of Eldred with smaller communities like Larabee and Coryville.
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3 editions found
1898 · Olean
USGS Topo · 1:62,500
1900 · Salamanca
USGS Topo · 1:62,500
1924 · Bradford
USGS Topo · 1:62,500
1926 · Bradford
USGS Topo · 1:62,500
1933 · Smethport
USGS Topo · 1:62,500
1937 · Smethport
USGS Topo · 1:62,500
1938 · Salamanca
USGS Topo · 1:62,500
1938 · Olean
USGS Topo · 1:62,500
1941 · Bradford
USGS Topo · 1:62,500
1943 · Olean
USGS Topo · 1:62,500