
Mineral Point stands at the center of this 1902 survey, anchoring a region defined by its complex geology and early industrial expansion across the driftless area of Southwest Wisconsin and Northern Illinois. The landscape is carved by the Pecatonica River and its numerous tributaries, including Bonner Branch and Ames Branch, which provided the necessary drainage and power for early lead and zinc mining operations. This map documents a dense network of nineteenth-century infrastructure, where the Chicago and Northwestern and the Chicago Milwaukee and St Paul railroads intersect to serve established mining and agricultural hubs.
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