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"This large pocket map highlights the copper mining claims of the primary operators across Michigan's Upper Peninsula. A base image outlines the numbered sections within each township, labeling geographic features, prominent landowners, and settlements throughout the region. Vibrant color identifies the properties of six different firms, identified in the center-left. The largest (light blue) is the Keweenaw Land Association, Ltd., followed by the Calumet and Hecla Mining Company, St. Mary's Canal Mineral Land Company, and others. An inset in the lower right shows the copper ranges across Ontonagon County, while the upper left focuses on Dungan Township in Houghton County. The map was compiled and drawn by B.F. Sparks and W.R. Hodge in Houghton, Michigan, based largely on earlier versions (1905, 1907) created by R.M. Edwards. Copywritten and published by Sparks in 1912. Lithographed in Grand Rapids by the Michigan Litho. Company. The map is extremely scarce and listed only once in WorldCat as of June 2024, at Yale University Library. Copper mining held immense significance for the development of Michigan s Keweenaw Peninsula. For thousands of years, indigenous populations utilized the landscape s unique copper deposits, crafting tools, and ornaments highly prized in trade networks. In the 19th and early 20th centuries, large-scale mining commenced, propelling the region to become the nation s leading copper producer for decades. This industry not only fueled economic growth in the region but also played a crucial role in the development of various American industries, including telegraphy and electricity, by supplying essential copper resources. The year after publication, a huge miner s strike halted operations across the peninsula an ill omen for future operations. By the late 1960s, copper production in Keweenaw had ceased entirely. Sources: OCLC# 1080235791; National Park Service;" Sheet Width (in) 38.5 Sheet Height (in) 31.75 Condition Description "Pocket map affixed to original linen covers. A large and irregular damp stain is faintly visible running along the upper third of the sheet. Near the label for Lake Superior, a small 1" hole has been patched with the original paper. Toning and wear along originally issued fold lines, including small spots of clean separation at fold intersections. About good condition overall. Blank on verso.".
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