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1891. Geology of the Duluth metropolitan area, Bulletin 33, Plate 11

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1949. Schwartz, George M. (George Melvin), 1892-1980. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of Townships 49 and 50 North, Range 14 ... Minnesota Geological Survey.

1892. Geology of the Duluth metropolitan area, Bulletin 33, Plate 12

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1949. Schwartz, George M. (George Melvin), 1892-1980. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of Township 50 North, Range 15 West, sc... Minnesota Geological Survey.

1893. Geology of the Duluth metropolitan area, Bulletin 33, Plate 14

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1949. Schwartz, George M. (George Melvin), 1892-1980. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of Township 51 North, Range 13 West, sc... Minnesota Geological Survey.

1894. Geology of the Duluth metropolitan area, Bulletin 33, Plate 15

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1949. Schwartz, George M. (George Melvin), 1892-1980. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of Township 51 North, Range 14 West, sc... Minnesota Geological Survey.

1895. Geology of the Duluth metropolitan area, Bulletin 33, Plate 16

Maps University Of Minnesota Public content
1949. Schwartz, George M. (George Melvin), 1892-1980. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of Township 51 North, Range 15 West, sc... Minnesota Geological Survey.

1896. Geology of the Duluth metropolitan area, Bulletin 33, Plate 17

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1949. Schwartz, George M. (George Melvin), 1892-1980. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of Township 52 North, Range 11 West, sc... Minnesota Geological Survey.

1897. Geology of the Duluth metropolitan area, Bulletin 33, Plate 18

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1949. Schwartz, George M. (George Melvin), 1892-1980. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of Township 52 North, Range 12 West, sc... Minnesota Geological Survey.

1898. Geology of the Duluth metropolitan area, Bulletin 33, Plate 19

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1949. Schwartz, George M. (George Melvin), 1892-1980. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of Township 52 North, Range 13 West, sc... Minnesota Geological Survey.

1899. Geology of the Duluth metropolitan area, Bulletin 33, Plate 2

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1949. Schwartz, George M. (George Melvin), 1892-1980. Maps showing sequence of geologic units (beds) alongshore from Duluth East City Limits to Near Knife River, scale 1 inch = about 1800 feet. Minnesota Geological Survey.

1900. Geology of the Duluth metropolitan area, Bulletin 33, Plate 3

Maps University Of Minnesota Public content
1949. Schwartz, George M. (George Melvin), 1892-1980. Maps showing sequence of geologic units (beds) alongshore from Knife River to Two Harbors, scale 1 inch = about 1,800 feet. Minnesota Geological Survey.