
Bangor and its neighboring borough Roseto center this map as high-density industrial hubs during the mid-20th century. The landscape is defined by the legacy of the slate industry, shown through numerous large Quarry sites scattered near Pen Argyl and Delabole. This era captures a complex transportation network where the Erie Lackawanna, Penn Central, and Lehigh and New England railroads converge to move goods through the Martins Creek valley toward the Delaware River.
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6 editions found
1890 · Easton
USGS Topo · 1:62,500
1891 · Easton
USGS Topo · 1:62,500
1891 · Delaware Water Gap
USGS Topo · 1:62,500
1893 · Delaware Water Gap
USGS Topo · 1:62,500
1894 · Allentown
USGS Topo · 1:62,500
1914 · Wind Gap
USGS Topo · 1:62,500
1916 · Wind Gap
USGS Topo · 1:62,500
1932 · Easton
USGS Topo · 1:62,500
1936 · Delaware Water Gap
USGS Topo · 1:48,000
1939 · Allentown
USGS Topo · 1:62,500