2002. Boerboom, Terrence J., Green, John C., 1932-, and Jirsa, Mark A. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of the Knife River quadrangle, scale 1:... Minnesota Geological Survey.
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2006. Green, John C., 1932-, Jerde, E.A., and Miller, James D., Jr. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of the Little Marais quadrangle, scale ... Minnesota Geological Survey.
2005. Chandler, Val W., Jirsa, Mark A., and Lively, R. S. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of the Mesabi Iron Range, scale 1:100,000. Minnesota Geological Survey.
2006. Mossler, John H. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of the Prescott quadrangle, scale 1:24,... Minnesota Geological Survey.
3075. Bedrock geology of the Saint Paul Park quadrangle, Washington and Dakota Counties, Minnesota, M-166
2006. Mossler, John H. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of the St. Paul Park quadrangle, scale ... Minnesota Geological Survey.
2006. Boerboom, Terrence J. and Green, John C., 1932-. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of the Schroeder quadrangle, scale 1:24... Minnesota Geological Survey.
1975. Ohio. Division of Geological Survey. Scale 1:12,000. by Stephen P. Reidel.
2004. Boerboom, Terrence J. and Green, John C., 1932-. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of the Split Rock Point quadrangle, sca... Minnesota Geological Survey.
2005. Mossler, John H. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of the Stillwater quadrangle, scale 1:2... Minnesota Geological Survey.
2006. Albers, Paul, Boerboom, Terrence J., Green, John C., 1932-, and Miller, James D., Jr. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of the Tofte quadrangle, scale 1:24,000. Minnesota Geological Survey.