
The Lehigh River and the adjacent Lehigh Canal corridor anchor this mid-century landscape, illustrating the industrial and transportation evolution of eastern Pennsylvania. Several rail lines, including the Lehigh and New England RR and Lehigh Valley RR, converge near Bath Junction, tracing the movement of materials between the region's numerous Quarries and urban centers. The terrain is marked by distinctive elevations such as Camelhump and Lehigh Mountain, which separate the dense residential blocks of Allentown and Bethlehem from the surrounding townships.
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1888 · Quakertown
USGS Topo · 1:62,500
1890 · Easton
USGS Topo · 1:62,500
1890 · Doylestown
USGS Topo · 1:62,500
1890 · Quakertown
USGS Topo · 1:62,500
1891 · Easton
USGS Topo · 1:62,500
1891 · Doylestown
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
1894 · Quakertown
USGS Topo · 1:62,500