1973. Sims, Paul K. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of the western Vermilion district, scal... Minnesota Geological Survey.
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1990. Setterholm, Dale R. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of Cretaceous age rocks, southwestern M... Minnesota Geological Survey.
1990. Setterholm, Dale R. Bedrock topography (elevation of the bedrock surface) of the sub-Cretaceous surface; Bedrock topography of the sub-Quaternary surface; Isopachs (th... Minnesota Geological Survey.
1968. Chart of Geologic Units and Aquifers prepared for the Metropolitan Council as a part of An Ecological Study for the Twin-Cities Metropolitan Area. ... Wallace, McHarg, Roberts and Todd.
1876. Winchell, N. H. (Newton Horace), 1839-1914. Cartographic Details: Scale not given. Photocopy. "1876." 58 x 49 centimeters Scale not given. Minnesota County Maps, Plat Books, and Atlases.
1876. Winchell, N. H. (Newton Horace), 1839-1914. "The fifth annual report of the Geological and Natural History Survey of Minnesota"-- upper right margin.; Relief shown by hachures.; Shows railroa... publisher not identified (United States).
1877. Winchell, N. H. (Newton Horace), 1839-1914. "Geological and Natural History Survey of Minnesota."; Relief shown by hachures.; Shows county boundaries, city boundaries, roads, finished railroa... Photo. Eng. Co (New York).
1877. Sperry, L. B. "Geological and Natural History Survey of Minnesota. Report of 1877." -- upper left.; Includes townships, ranges, and sections. 32 x 37 Centimeters... Photo Engraving Co (New York).
1890. Winchell, N. H. (Newton Horace), 1839-1914. At head of title: Geological and Natural History Survey of Minnesota.; Relief shown by hachures.; Includes inset: Map of the silver mining region, ... publisher not identified (United States).
1968. Chart of Geological Sections 1-6 prepared for the Metropolitan Council as a part of An Ecological Study for the Twin-Cities Metropolitan Area. Scal... Wallace, McHarg, Roberts and Todd.