1968. Machamer, J.F. Geology cross section diagrams of Zenith Mine, scale 1 inch = about 100 feet. Minnesota Geological Survey.
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492. Geology of clay deposits, Red Wing area, Goodhue and Wabasha Counties, Minnesota, RI-2, Plate 1
1963. Austin, George S. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of the Red Wing Area, Goodhue and Wabas... Minnesota Geological Survey.
1959. Grout, Frank F. (Frank Fitch), 1880-1958, Schwartz, George M. (George Melvin), 1892-1980, and Sharp, R.P. (Surveyor). Glacial (Quaternary age glacial and stream sediments and landforms) features of Cook County, Minnesota, scale 1 inch = 5 miles. Minnesota Geological Survey.
1959. Grout, Frank F. (Frank Fitch), 1880-1958, Schwartz, George M. (George Melvin), 1892-1980, and Sharp, R.P. (Surveyor). Plate 9, Geology map of Township 62 North, Range 4 East, Cook County, Minnesota, scale 1 inch = about 1/2 mile. Minnesota Geological Survey.
1959. Grout, Frank F. (Frank Fitch), 1880-1958, Schwartz, George M. (George Melvin), 1892-1980, and Sharp, R.P. (Surveyor). Plate 10, Geology map of Townships 60 and 61 North, Range 1 West, Cook County, Minnesota, scale 1 inch = about 1/2 mile. Minnesota Geological Survey.
1959. Grout, Frank F. (Frank Fitch), 1880-1958, Schwartz, George M. (George Melvin), 1892-1980, and Sharp, R.P. (Surveyor). Plate 11, Geology map of Township 61 North, Range 1 East, Cook County, Minnesota, scale 1 inch = about 1/2 mile. Minnesota Geological Survey.
1959. Grout, Frank F. (Frank Fitch), 1880-1958, Schwartz, George M. (George Melvin), 1892-1980, and Sharp, R.P. (Surveyor). Plate 12, Geology map of parts of Townships 61 and 62 North, Range 2 East, Cook County, Minnesota, scale 1 inch = about 1/2 mile. Minnesota Geological Survey.
1959. Grout, Frank F. (Frank Fitch), 1880-1958, Schwartz, George M. (George Melvin), 1892-1980, and Sharp, R.P. (Surveyor). Plate 13, Geology map of Townships 59 and 60 North, Range 3 West, Cook County, Minnesota, scale 1 inch = about 1/2 mile. Minnesota Geological Survey.
1959. Grout, Frank F. (Frank Fitch), 1880-1958, Schwartz, George M. (George Melvin), 1892-1980, and Sharp, R.P. (Surveyor). Plate 14, Geology map of Township 60 North, Range 2 West, Cook County, Minnesota, scale 1 inch = about 1/2 mile. Minnesota Geological Survey.
1959. Grout, Frank F. (Frank Fitch), 1880-1958, Schwartz, George M. (George Melvin), 1892-1980, and Sharp, R.P. (Surveyor). Plate 15, Geology map of Township 59 North, Range 4 West, Cook County, Minnesota, scale 1 inch = about 1/2 mile. Minnesota Geological Survey.