1920. Jillson, Willard Rouse, 1890-1975. Base computed and drafted in 1917 by Lucien M. Sellier.; Includes index of productive oil and gas fields, statistics for oil and coal production, a... The Survey (Frankfort, Ky).
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1977. Ojakangas, Richard W. and Sims, Paul K. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of the Lost Lake quadrangle, scale 1:24... Minnesota Geological Survey.
1909. Van Hise, Charles Richard, 1857-1918. Relief shown by contours.; Includes 3 cross sections. 33 x 53 Centimeters Scale 1:62,500 General Map Collection. U.S. Geological Survey (Washington, D.C).
1970. Sims, Paul K. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of Minnesota, scale 1:1,000,000. Minnesota Geological Survey.
1976. Morey, G.B. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of Minnesota, scale 1:1,000,000. Minnesota Geological Survey.
1993. Morey, G.B. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of Minnesota, scale 1:3,000,000. Minnesota Geological Survey.
1994. Morey, G.B. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of Minnesota, scale 1:1,000,000,, digit... Minnesota Geological Survey.
1996. Morey, G.B. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of Minnesota, scale 1:1,000,000, digita... Minnesota Geological Survey.
2000. Meints, Joyce P. and Morey, G.B. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of Minnesota, scale 1:1,000,000, digita... Minnesota Geological Survey.
1982. Morey, G.B. Bedrock outcrop (location of rocks exposed at the land surface) map of Minnesota, scale 1:3,168,000. Minnesota Geological Survey.