
Industrial valleys and river junctions define this landscape at the dawn of the twentieth century, where the Mahoning River and Shenango River converge to form the Beaver River. The dominance of the rail industry is clear, with the Pittsburgh and Lake Erie R.R. and several Pennsylvania R.R. divisions threading through steep topography to connect manufacturing centers like Ellwood City and Beaver Falls.
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6 editions found
1901 · Beaver
USGS Topo · 1:62,500
1902 · New Castle
USGS Topo · 1:62,500
1904 · Newcastle
USGS Topo · 1:62,500
1904 · Wellsville
USGS Topo · 1:62,500
1904 · Beaver
USGS Topo · 1:62,500
1905 · Neshannock
USGS Topo · 1:62,500
1906 · Youngstown
USGS Topo · 1:62,500
1906 · Sewickley
USGS Topo · 1:62,500
1907 · Neshannock
USGS Topo · 1:62,500
1907 · Columbiana
USGS Topo · 1:62,500