1968. Map of Natural Forest Regions prepared for the Metropolitan Council as a part of An Ecological Study for the Twin-Cities Metropolitan Area. Scale 1... Wallace, McHarg, Roberts and Todd.
1968. Map of Navigability prepared for the Metropolitan Council as a part of An Ecological Study for the Twin-Cities Metropolitan Area. Scale 1:250,000 B... Wallace, McHarg, Roberts and Todd.
1915. Minnesota Geological Survey. Cartographic Details: Scale not given (W 95°36'00"--W 94°24'00"/N 48°59'00"--N 47°24'00"). Relief shown by contours. "Plate II" in upper right corn... The Survey (Minnesota), 1915.
1968. Map of Physiographic Regions prepared for the Metropolitan Council as a part of An Ecological Study for the Twin-Cities Metropolitan Area. Scale 1:... Wallace, McHarg, Roberts and Todd.
1968. Map of Precipitation Zones prepared for the Metropolitan Council as a part of An Ecological Study for the Twin-Cities Metropolitan Area. Scale 1:25... Wallace, McHarg, Roberts and Todd.