Albers, PaulBoerboom, Terrence J.Green, John C., 1932-Miller, James D., Jr.Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of the Tofte quadrangle, scale 1:24,000.PDFengMinnesota Geological SurveyPublicBedrock geology of the Tofte quadrangle, Cook County, Minnesota, M-171MapsMinnesota2006University of Minnesota