
The Ohio River valley serves as the primary artery for this post-war survey, anchoring a network of industrial and transport hubs across West Virginia, Ohio, and Pennsylvania. Large population centers like Parkersburg, Clarksburg, and Zanesville reflect the mid-century urbanization of the Appalachian Plateau, while the Baltimore and Ohio railroad corridor underscores the region's historical reliance on heavy rail for coal and manufacturing.
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1886 · St. George
USGS Topo · 1:125,000
1889 · Beverly
USGS Topo · 1:125,000
1891 · St. George
USGS Topo · 1:125,000
1892 · Beverly
USGS Topo · 1:125,000
1893 · Buckhannon
USGS Topo · 1:125,000
1893 · Sutton
USGS Topo · 1:125,000
1896 · Buckhannon
USGS Topo · 1:125,000
1897 · Buckhannon
USGS Topo · 1:125,000
1900 · Masontown
USGS Topo · 1:62,500
1901 · Amity
USGS Topo · 1:62,500