
Gwinn stands as a central industrial hub in this early 1950s survey of Marquette County, surrounded by a dense network of iron mining operations. The southern portion of the map reveals the concentration of heavy industry at the time, with the Princeton No 1 Mine, Stegmiller Mine, and several Austin and Stephenson workings punctuating the landscape. This era marks a peak in the rail-and-resource economy, where the Chicago and North Western and Duluth South Shore and Atlantic railroads converge to move ore from these Marquette Range sites.
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