The Lehigh River valley serves as the central corridor for this 2010 survey, illustrating a landscape defined by industrial history and preserved crossings. Settlement patterns are concentrated along the riverbanks and rail lines, with established communities like Slatington and Laurys Station punctuating the valley. A series of hydraulic structures including the Treichlers Dam, Number Four Dam, and Old Laury Dam reveal the engineering legacy of the river's management.
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This is the sole edition of this map. No revisions or reprints were ever made.
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
1922 · Mauch Chunk
USGS Topo · 1:62,500
1924 · Mauch Chunk
USGS Topo · 1:62,500
1937 · Allentown West
USGS Topo · 1:48,000
1939 · Allentown
USGS Topo · 1:62,500
1942 · Allentown West
USGS Topo · 1:62,500
1943 · Mauch Chunk
USGS Topo · 1:62,500