1977. Anderson, D.H. (Geologist), Morey, G.B., Papike, J. J. (James Joseph), 1937-2020, and Weiblen, Paul W. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of the Long Island Lake quadrangle, sca... Minnesota Geological Survey.
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1970. Hogberg, Rudolph K. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of the Minneapolis Quadrangle, Minnesot... Minnesota Geological Survey.
1970. Hogberg, Rudolph K. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of the Minneapolis Quadrangle, Minnesot... Minnesota Geological Survey.
1992. Green, John C., 1932-. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments), North Shore of Lake Superior, scale 1:... Minnesota Geological Survey.
1969. Davidson, D.M., Jr. Map showing interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of the Perent Lake quadrang... Minnesota Geological Survey.
1988. Jirsa, Mark A. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of the Sherry Lake quadrangle, scale 1:... Minnesota Geological Survey.
487. Geologic map of the Silver Bay and Split Rock Point NE quadrangles, Lake County, Minnesota, M-65
1988. Miller, James D., Jr. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of the Silver Bay and Split Rock Point ... Minnesota Geological Survey.
1977. Morey, G.B. and Nathan, H.D. (Geologist). Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of the South Lake quadrangle, scale 1:2... Minnesota Geological Survey.
1932. Grout, Frank F. (Frank Fitch), 1880-1958. Geologic map of Minnesota, scale 1:500,000, northern half of Minnesota. Minnesota Geological Survey.
1932. Grout, Frank F. (Frank Fitch), 1880-1958. Geologic map of Minnesota, scale 1:500,000, southern half of Minnesota. Minnesota Geological Survey.