1929. United States. Bureau of Chemistry and Soils. 63 x 67 Centimeters Scale [1:63,360] Minnesota County Maps, Plat Books, and Atlases. Field Operations, Bureau of Chemistry and Soils (Washington, D.C.?).
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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).