1939. Grout, Frank F. (Frank Fitch), 1880-1958 and Schwartz, George M. (George Melvin), 1892-1980. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of Townships 54 and 55 North, Ranges 7 ... Minnesota Geological Survey.
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1939. Grout, Frank F. (Frank Fitch), 1880-1958 and Schwartz, George M. (George Melvin), 1892-1980. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of Townships 56 North, Range 7 West and... Minnesota Geological Survey.
1939. Grout, Frank F. (Frank Fitch), 1880-1958 and Schwartz, George M. (George Melvin), 1892-1980. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of Township 57 North, Ranges 6 and 7 We... Minnesota Geological Survey.
1939. Grout, Frank F. (Frank Fitch), 1880-1958 and Schwartz, George M. (George Melvin), 1892-1980. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of Township 58 North, Range 6 West and ... Minnesota Geological Survey.
1939. Grout, Frank F. (Frank Fitch), 1880-1958 and Schwartz, George M. (George Melvin), 1892-1980. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of a portion of Township 59 North, Rang... Minnesota Geological Survey.
1939. Grout, Frank F. (Frank Fitch), 1880-1958 and Schwartz, George M. (George Melvin), 1892-1980. Structural (recognizable features produced by deformation of rocks) map of anorthosite occurrence, scale 1 inch = about 2 miles. Minnesota Geological Survey.
1970. Mattson, L. A. (Lewis Arthur), 1931-, Thomas, J. A. (John A.), 1932-, and Wright, H. E. (Herbert Edgar), 1917-2015. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of Cloquet Quadrangle, Carlton County, ... Minnesota Geological Survey.
1955. Grout, Frank F. (Frank Fitch), 1880-1958 and Wolff, J.F., Sr. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) around the Cuyuna district, Minnesota, ... Minnesota Geological Survey.
1955. Grout, Frank F. (Frank Fitch), 1880-1958 and Wolff, J.F., Sr. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) the Cuyuna Iron District, North Range a... Minnesota Geological Survey.
1955. Grout, Frank F. (Frank Fitch), 1880-1958 and Wolff, J.F., Sr. Cross section B-B, geology of the Cuyuna Range, Minnesota, scale 1 inch = 500 feet. Minnesota Geological Survey.