1954. White, David A. (David Archer). Sheet 3 of 11 sheets, Structure contour (contour lines of equal elevation that map features in the subsurface produced by rock deformation or erosi... Minnesota Geological Survey.
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1954. White, David A. (David Archer). Sheet 4 of 11 sheets, Structure contour (contour lines of equal elevation that map features in the subsurface produced by rock deformation or erosi... Minnesota Geological Survey.
1968. Map of Sub-Surface Geological Features prepared for the Metropolitan Council as a part of An Ecological Study for the Twin-Cities Metropolitan Area... Wallace, McHarg, Roberts and Todd.
1986. Meyer, Gary N. Bedrock topography (elevation of the bedrock surface) and cross sections, Todd County, Minnesota, scale 1 inch = about 5 miles. Minnesota Geological Survey.
1968. Map of Suitability for Extraction prepared for the Metropolitan Council as a part of An Ecological Study for the Twin-Cities Metropolitan Area. Sca... Wallace, McHarg, Roberts and Todd.
1968. Map of Suitability for Forestry prepared for the Metropolitan Council as a part of An Ecological Study for the Twin-Cities Metropolitan Area. Scale... Wallace, McHarg, Roberts and Todd.
2002. Chandler, Val W. Gravity (interpretation of gravity data collected with ground based meters indicating differences in rock density of rocks in the upper crust) and ... Minnesota Geological Survey.
2001. Chandler, Val W. Gravity (interpretation of gravity data collected with ground based meters indicating differences in rock density of rocks in the upper crust) and ... Minnesota Geological Survey.
2001. Chandler, Val W. Gravity (interpretation of gravity data collected with ground based meters indicating differences in rock density of rocks in the upper crust) and ... Minnesota Geological Survey.
1912. United States. Forest Service. Cartographic Details: Scale not given. "Diagram forming part of proclamation dated September 21, 1912." Insets: Details, Rs. 1-8W. -- Details, Rs. ... Forest Service, U.S. Dept. of Agriculture ; Washington, D.C.?.