
Fort Littleton and Burnt Cabins anchor the central valley of this mid-1960s survey, where the Pennsylvania Turnpike cuts through the ridges of the Appalachian Mountains. The landscape is defined by long, parallel elevations including Sideling Hill, Blacklog Mountain, and Tuscarora Mountain, which hem in narrow valleys like Buchanan Valley and Metal Valley. Local institutions and gathering places are well-documented, from rural religious centers like Cromwell Ch and Clear Ridge Ch to the youth facilities at Camp Sinoquipe. Significant conservation areas, such as Cowans Gap State Park and Buchanan State Forest, dominate the southern reaches, preserving the terrain surrounding Cowans Gap. This period shows the region's transition into a modern transportation corridor while maintaining its traditional settlement patterns at Knobsville and Clear Ridge.
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1900 · Mercersburg
USGS Topo · 1:62,500
1902 · Mercersburg
USGS Topo · 1:62,500
1925 · Needmore
USGS Topo · 1:48,000
1930 · Broad Top
USGS Topo · 1:62,500
1933 · Broad Top
USGS Topo · 1:62,500
1935 · Needmore
USGS Topo · 1:62,500
1939 · Needmore
USGS Topo · 1:62,500
1939 · Orbisonia
USGS Topo · 1:62,500
1940 · Orbisonia
USGS Topo · 1:62,500
1942 · Hagerstown
USGS Topo · 1:125,000