
Lehigh Furnace and Slatedale anchor this Lehigh County landscape, showcasing a region shaped by industrial extraction and small-scale agriculture. The northern portion is dominated by the steep ascent of Blue Mountain, where the Appalachian Trail follows the ridge past Bake Oven Knob. Below the ridge, numerous quarries near Emerald reflect the area's history of slate production, while an old railroad grade winds through the valley, marking the former transport routes that once connected these rural outposts.
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4 editions found
1889 · Hazleton
USGS Topo · 1:62,500
1891 · Hazleton
USGS Topo · 1:62,500
1893 · Hazleton
USGS Topo · 1:62,500
1902 · Slatington
USGS Topo · 1:62,500
1909 · Hamburg
USGS Topo · 1:62,500
1911 · Hamburg
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
1942 · Allentown West
USGS Topo · 1:62,500