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.
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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.
1955. Grout, Frank F. (Frank Fitch), 1880-1958 and Wolff, J.F., Sr. Cross sections A-A and C-C, geology of the Cuyuna Range, Minnesota, scale 1 inch = 500 feet. Minnesota Geological Survey.
1955. Grout, Frank F. (Frank Fitch), 1880-1958 and Wolff, J.F., Sr. Map of west extension of South Range, Cuyuna Iron District, Minnesota, scale 1 inch = about 3/4 mile. Minnesota Geological Survey.
1955. Grout, Frank F. (Frank Fitch), 1880-1958 and Wolff, J.F., Sr. Diagram showing correlation of subdivisions of Iron-Formations Cuyuna, Mesabi, and Gogebic Ranges, Minnesota, , vertical scale 1 inch = about 200 f... Minnesota Geological Survey.
1964. Taylor, Richard B. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of Duluth and vicinity, St. Louis Count... Minnesota Geological Survey.
1949. Schwartz, George M. (George Melvin), 1892-1980. Maps showing sequence of geologic units (beds) alongshore from Mesaba Avenue to Beyond Lakewood, scale 1 inch = about 1,800 feet. Minnesota Geological Survey.