
The Allegheny National Forest dominates this 1967 survey, revealing a landscape defined by industrial extraction and recreational development. A dense network of gas wells and pipelines cuts through the timbered drainages of Millstone Creek and Lick Run, showing the footprint of energy production in Forest and Elk Counties. The Baltimore and Ohio railroad corridor serves the primary settlement at Marienville, passing a water tank and a nearby gravel pit that speak to the infrastructure of the era.
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1918 · Loleta
USGS Topo · 1:62,500
1934 · Kane
USGS Topo · 1:48,000
1935 · Sheffield
USGS Topo · 1:48,000
1936 · Marienville
USGS Topo · 1:48,000
1939 · Kane
USGS Topo · 1:62,500
1940 · Hallton
USGS Topo · 1:48,000
1941 · Sheffield
USGS Topo · 1:62,500
1941 · Marienville
USGS Topo · 1:62,500
1943 · Hallton
USGS Topo · 1:62,500
1957 · Warren
USGS Topo · 1:250,000