1887. Geological and Natural History Survey of Canada and Tyrrell, Joseph Burr, 1858-1957. Relief shown by contours, hachures and spot heights. Includes cross section. Panel title: Geological map of part of Northern Alberta, N.W.T. To acc...
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1887. Geological and Natural History Survey of Minnesota, Winchell, Alexander, 1824-1891, and Winchell, N. H. (Newton Horace), 1839-1914. 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 Geolog... Geological and Natural History Survey of Minnesota ; St. Paul, Minnesota.