
The Allegheny River valley serves as the focal point for this 1969 survey, where the borough of Coudersport sits at the junction of Mill Creek and the main river channel. The landscape is defined by the sharp transition between the developed valley floor and the surrounding plateaus, heavily occupied by State Game Lands No 204 and the Susquehannock State Forest. To the west, the path of the Old Allegheny Railroad Grade follows the riverbank past Olmsted, tracing a retired industrial corridor through the hills.
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1932 · Genesee
USGS Topo · 1:62,500
1934 · Coudersport
USGS Topo · 1:48,000
1937 · Genesee
USGS Topo · 1:62,500
1938 · Coudersport
USGS Topo · 1:62,500
1947 · Conrad
USGS Topo · 1:62,500
1947 · Ayers Hill
USGS Topo · 1:24,000
1948 · Emporium
USGS Topo · 1:62,500
1948 · Keating Summit
USGS Topo · 1:24,000
1948 · Austin
USGS Topo · 1:24,000
1949 · Ayers Hill
USGS Topo · 1:24,000