
New Middletown and New Springfield anchor this detailed study of the Ohio-Pennsylvania borderlands during a period of transition in the mid-20th century. The landscape is a complex mix of agricultural land, rural residential clusters, and heavy industrial footprints, most notably the extensive Strip Mines that dominate the southern half of the quadrangle. Transport infrastructure is a defining feature, with the Ohio Turnpike cutting across the center, supported by local landmarks like the Petersburg Airfield and a Drive-in Theater near the Pennsylvania line.
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1902 · New Castle
USGS Topo · 1:62,500
1904 · Newcastle
USGS Topo · 1:62,500
1905 · Neshannock
USGS Topo · 1:62,500
1906 · Youngstown
USGS Topo · 1:62,500
1907 · Neshannock
USGS Topo · 1:62,500
1907 · Columbiana
USGS Topo · 1:62,500
1908 · Youngstown
USGS Topo · 1:62,500
1909 · Columbiana
USGS Topo · 1:62,500
1950 · Cleveland
USGS Topo · 1:250,000
1951 · Canton
USGS Topo · 1:250,000