
Indianapolis serves as the focal point of this regional study, showing its mid-century urban expansion and the network of radial highways like U.S. 31 and U.S. 40 that connected it to the surrounding heartland. The landscape transitions from the dense street grids of Speedway and Beech Grove to the forested hills of the south, where Brown County State Park and Morgan-Monroe State Forest dominate the terrain. Along the western edge, the Wabash River valley defines the border between Indiana and Illinois, passing through industrial and collegiate centers like Terre Haute, home to Rose Polytechnic Institute. The era's infrastructure is prominently displayed through military installations such as Camp Atterbury and Fort Benjamin Harrison, alongside a dense lattice of railroads including the Pennsylvania RR and New York Central RR. This period captures the region as a major crossroads of higher education and industry before the full realization of the interstate highway system.
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1899 · Danville
USGS Topo · 1:62,500
1900 · Danville
USGS Topo · 1:62,500
1906 · Urbana
USGS Topo · 1:62,500
1908 · Clay City
USGS Topo · 1:48,000
1908 · Bloomington
USGS Topo · 1:48,000
1908 · Bloomfield
USGS Topo · 1:62,500
1910 · Clay City
USGS Topo · 1:62,500
1910 · Hardinville
USGS Topo · 1:62,500
1910 · Bloomington
USGS Topo · 1:62,500
1917 · Birds
USGS Topo · 1:62,500