
The Boyer River corridor anchors this 1971 topographical survey, revealing a landscape defined by the intersection of major rail lines and rural agriculture. The county seat of Denison serves as the focal point, where the Illinois Central and Chicago and North Western railroads converge. This infrastructure supported a network of grain transport and local commerce, with the smaller settlement of Deloit situated to the north.
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This is the sole edition of this map. No revisions or reprints were ever made.