The Knobs rise above the high plateau along the border of Elk and Clearfield Counties, anchoring a landscape defined by significant timber and resource access routes. The prominence of Big Knob and Little Knob overlooks a dense network of forest roads and historic thoroughfares such as Caledonia Pike and Jack Dent Rd. These routes, alongside names like Munn Farm Rd and Orchard Camp Rd, hint at the land's history of agricultural and seasonal use within the Pennsylvania wilds.
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1929 · Karthaus
USGS Topo · 1:62,500
1929 · Clearfield
USGS Topo · 1:48,000
1932 · Clearfield
USGS Topo · 1:62,500
1932 · Karthaus
USGS Topo · 1:62,500
1941 · Benezette
USGS Topo · 1:62,500
1943 · Benezette
USGS Topo · 1:62,500
1945 · Driftwood
USGS Topo · 1:48,000
1945 · Driftwood
USGS Topo · 1:24,000
1947 · Driftwood
USGS Topo · 1:24,000
1957 · Warren
USGS Topo · 1:250,000