Grout, Frank F. (Frank Fitch), 1880-1958Wolff, J.F., Sr.Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) the Cuyuna Iron District, North Range and part of South Range, Crow Wing County, Minnesota, scale 1 inch = about 1/3 mile.PDFengMinnesota Geological SurveyPublicGeology of the Cuyuna district, Minnesota: a progress report, Bulletin 36, Plate 2MapsMinnesota1955University of Minnesota