
Blue Mountain serves as the dominant topographic spine of this region, separating the ridge-and-valley landscape of Monroe and Northampton counties during the early twentieth century. The map illustrates a dense network of early industry and local infrastructure, particularly the concentration of slate and mineral extraction near Chapman Quarries and Siegfried. The rail-dependent economy of the era is evident through the complex junctions of the Lehigh and New England RR and the Lackawanna RR, which served the small communities of Saylorsburg and Wind Gap.
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7 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
1902 · Slatington
USGS Topo · 1:62,500
1914 · Wind Gap
USGS Topo · 1:62,500
1916 · Wind Gap
USGS Topo · 1:62,500
1919 · Pocono
USGS Topo · 1:62,500
1921 · Pocono
USGS Topo · 1:62,500