Preliminary geological map of the iron bearing rocks of the northeastern part of Minnesota
Description
Cartographic Details: Scale approximately 1:330,000 (W 92°1'--W 89°30'/N 48°14'--N 47°3'). Relief shown by hachures. Cover title: Winchell's Geological map of the iron-bearing rocks of northeastern Minnesota. -- Advance copy. Includes descriptive text inside cover., 18 x 76 centimeters on sheet 20 x 74 centimeters
Creator
Geological and Natural History Survey of Minnesota, Winchell, Alexander, 1824-1891, Winchell, N. H. (Newton Horace), 1839-1914
Publisher
Geological and Natural History Survey of Minnesota ; St. Paul, Minnesota
Geological and Natural History Survey of Minnesota, Winchell, Alexander, 1824-1891, Winchell, N. H. (Newton Horace), 1839-1914 (1887). Preliminary geological map of the iron bearing rocks of the northeastern part of Minnesota. Geological and Natural History Survey of Minnesota ; St. Paul, Minnesota. https://umedia.lib.umn.edu/item/p16022coll247:251 (map)