
Blue Mountain dominates this survey, carving a sharp diagonal through the Pennsylvania landscape where Schuylkill, Lehigh, and Berks counties meet. The terrain reveals a complex network of narrow valleys and high ridges like Shochary Ridge, forcing settlements and transportation into tight corridors. Along the Little Schuylkill River, the Philadelphia and Reading Rr connects industrial-era towns such as New Ringgold and Hamburg.
79 named features on this map. Tap any name to fly to it.
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5 editions found
1889 · Hazleton
USGS Topo · 1:62,500
1889 · Pottsville
USGS Topo · 1:62,500
1891 · Hazleton
USGS Topo · 1:62,500
1891 · Pottsville
USGS Topo · 1:62,500
1892 · Mahanoy
USGS Topo · 1:62,500
1893 · Hazleton
USGS Topo · 1:62,500
1893 · Mahanoy
USGS Topo · 1:62,500
1894 · Reading
USGS Topo · 1:62,500
1902 · Boyertown
USGS Topo · 1:62,500
1902 · Wernersville
USGS Topo · 1:62,500