
The Allegheny Mountains define the topography of this region at the start of the twentieth century, where the industrial expansion of central Pennsylvania is written into the landscape. The Pittsburgh Division of the Pennsylvania Railroad carves a critical path through the high terrain, cresting at Summit and Gallitzin via engineering landmarks like Muleshoe. These rail lines supported the growth of numerous coal and industrial settlements such as Puritan, Lilly, and Sonman.
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7 editions found
1900 · Everett
USGS Topo · 1:62,500
1902 · Everett
USGS Topo · 1:62,500
1902 · Ebensburg
USGS Topo · 1:62,500
1902 · Patton
USGS Topo · 1:62,500
1902 · Barnesboro
USGS Topo · 1:62,500
1902 · Hollidaysburg
USGS Topo · 1:62,500
1903 · Hollidaysburg
USGS Topo · 1:62,500
1904 · Barnesboro
USGS Topo · 1:62,500
1904 · Patton
USGS Topo · 1:62,500
1904 · Ebensburg
USGS Topo · 1:62,500