1961. Schneider, Alan F. Pleistocene (Quaternary age glacial and stream sediments) geology of the Randall Region, Minnesota, scale 1:62,500. Minnesota Geological Survey.
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1961. Baadsgaard, Halfdan, Goldich, Samuel S., 1909-, Hoffman, J. H. (John H.), Krueger, Harold W., and Nier, Alfred O. (Alfred Otto), 1911-1994. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of northeastern Minnesota, scale 1 inc... Minnesota Geological Survey.
1961. Baadsgaard, Halfdan, Goldich, Samuel S., 1909-, Hoffman, J. H. (John H.), Krueger, Harold W., and Nier, Alfred O. (Alfred Otto), 1911-1994. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of east-central Minnesota, scale 1 inch... Minnesota Geological Survey.
1961. Baadsgaard, Halfdan, Goldich, Samuel S., 1909-, Hoffman, J. H. (John H.), Krueger, Harold W., and Nier, Alfred O. (Alfred Otto), 1911-1994. Map of the Minnesota-Ontario border region, showing location of dated samples, scale 1 inch = about 20 miles. Minnesota Geological Survey.
1961. Baadsgaard, Halfdan, Goldich, Samuel S., 1909-, Hoffman, J. H. (John H.), Krueger, Harold W., and Nier, Alfred O. (Alfred Otto), 1911-1994. Map of western part of the Lake Superior region, Minnesota, showing location of samples that were age-dated by radioactive isotope methods, scale 1... Minnesota Geological Survey.
1961. Baadsgaard, Halfdan, Goldich, Samuel S., 1909-, Hoffman, J. H. (John H.), Krueger, Harold W., and Nier, Alfred O. (Alfred Otto), 1911-1994. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of the Granite Falls area, Minnesota, s... Minnesota Geological Survey.
1968. Griffin, W. L. (Geologist), Morey, G.B., Ojakangas, Richard W., and Sims, Paul K. Map showing interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) around the Vermilion area, ... Minnesota Geological Survey.
1872. Winchell, N. H. (Newton Horace), 1839-1914. Geologic map of Minnesota, scale 1 inch = 20 miles. Minnesota Geological Survey.
1918. Harder, E.C. and Johnston, A. W. (A. Walfred). Map of East Central Minnesota showing location of rock outcrops (location of rocks exposed at the land surface), scale 1 inch = 10 miles. Minnesota Geological Survey.
1918. Harder, E.C. and Johnston, A. W. (A. Walfred). Map of the principal part of the Cuyuna Iron-ore District, showing the distribution of known iron-bearing rocks and lines of maximum magnetic attra... Minnesota Geological Survey.