
Oil Wells pepper the landscape across the southern tier of Allegany County, marking a region defined by its long-standing petroleum extraction industry. Centered on Allentown, the terrain is a complex network of ridges and deep hollows like California Hollow and Stony Lonesome Hollow. The 1960s economy here appears deeply tied to these natural resources, with numerous drilling sites interspersed among established agricultural roads. Small hamlets such as Alma and Petrolia serve as local hubs along the winding valley floors.
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1925 · Belmont
USGS Topo · 1:62,500
1926 · Wellsville
USGS Topo · 1:62,500
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
1939 · Belmont
USGS Topo · 1:62,500
1950 · Elmira
USGS Topo · 1:250,000
1954 · Williamsport
USGS Topo · 1:250,000
1957 · Warren
USGS Topo · 1:250,000