
St Bonaventure University and the bustling neighborhoods of Olean anchor this mid-century portrait of the upper Allegheny River valley. The map reveals a dense network of neighborhoods including North Olean, South Olean, East Olean, and Boardmanville, all interconnected by the Erie-Lackawanna and Pennsylvania Railroad lines. This industrial and residential core is contrasted by the high ridges to the south, where Rock City Park and Hartzfelt Mtn overlook the sprawling Oil Field that historically defined the region's economy.
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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