
The industrial corridor along the Allegheny River defines this region during a period of significant mid-century suburban expansion. The heavy infrastructure of the Penn Central and Bessemer and Lake Erie railroads supports the dense riverfront settlements of New Kensington, Oakmont, and Springdale. Purple-tinted revisions from 1969 highlight the northward spread of residential developments like Magill Heights and Allegheny Acres, contrasting with the more established grid of Arnold and Parnassus.
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4 editions found
1904 · Mc Keesport
USGS Topo · 1:62,500
1904 · Greensburg
USGS Topo · 1:62,500
1906 · Greensburg
USGS Topo · 1:62,500
1907 · Pittsburg
USGS Topo · 1:62,500
1907 · Freeport
USGS Topo · 1:62,500
1908 · New Kensington
USGS Topo · 1:62,500
1909 · Freeport
USGS Topo · 1:62,500
1910 · New Kensington
USGS Topo · 1:62,500
1950 · Valencia
USGS Topo · 1:24,000
1951 · Pittsburg East
USGS Topo · 1:24,000