1993. Southwick, Dave L. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments), Archean rocks, bedrock outcrop (rock e... Minnesota Geological Survey.
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1966. Green, John C., 1932-, Phinney, William C., and Weiblen, Paul W. Map showing interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of the Gabbro Lake 15 minut... Minnesota Geological Survey.
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.
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.