Description: Coal producing regions of the United States. Place Names: Montana, North Dakota, Michigan, Illinois, Iowa, West Virginia, ISO Topic Categories: boundaries, geoscientificInformation, inlandWaters, location, oceans Keywords: Coal Mining Regions of the United States, physical, statistical, industry, boundaries, geoscientificInformation, inlandWaters, location, oceans, Unknown, 1906 Source: Alexis Everett Frye, Frye's First Steps in Geography (Boston, Massachusetts: Ginn and Company, 1906) 62 Map Credit: Courtesy The Private Collection of Roy Winkelman |
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