
The Ohio River corridor serves as the industrial and transit anchor of this region, where the urban centers of Cincinnati and Covington face one another across the state line. By the early 1970s, the landscape reflects a transition toward large-scale infrastructure and flood control, evidenced by the presence of the Brookville Reservoir and Geist Reservoir. Transport networks define the tri-state area, with the Penn Central railroad and I-75 connecting the manufacturing hubs of Dayton and Hamilton to the river valley.
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3 editions found
1898 · East Cincinnati
USGS Topo · 1:62,500
1904 · Springfield
USGS Topo · 1:62,500
1904 · Dayton
USGS Topo · 1:62,500
1904 · Mason
USGS Topo · 1:62,500
1905 · Brookville
USGS Topo · 1:62,500
1906 · Dayton
USGS Topo · 1:62,500
1906 · Mason
USGS Topo · 1:62,500
1906 · Springfield
USGS Topo · 1:62,500
1907 · Blanchester
USGS Topo · 1:62,500
1908 · Miamisburg
USGS Topo · 1:62,500