The Allegheny River valley serves as the central corridor for this 2013 survey, where river-level settlements like Eldred and Larabee sit in contrast to the deep hollows and high points of the surrounding plateau. The region's transport history is visible in the network of rural roads such as Troy Timber Line Rd and Kansas Branch Rd, which navigate the complex drainage systems of Knapp Cr and Indian Cr.
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This is the sole edition of this map. No revisions or reprints were ever made.
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