1920. Mutual Automobile Association of Minnesota. Cartographic Details: Scale not given ; Blue line print.Index to trail markings with symbols."Gus. G. Martin Co., Printers." 67 x 53 centimeters Mi... Mutual Automobile Association (Minnesota), 1920.
2004. National Atlas of the United States. This polygon shapefile portrays county level data for the fiscal-year-2004 National Fire Plan - Hazardous Fuels Reduction Program. The purpose of t... National Atlas of the United States.
1916. National Highways Association. Cartographic Details: Scale approximately 1:1,560,000 (W 97 ̊15 ́--W 89 ̊30 ́/N 49 ̊23 ́--N 43 ̊30)́. In upper margin: Good roads everywhere : four... The Association (Washington, D.C.).
1972. National Atlas of the United States. This polygon shapefile contains National Wilderness Preservation System areas of 640 acres or more, in the United States, Puerto Rico, and the U.S.... National Atlas of the United States.
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.
1968. Chart of Navigability (Millions of Tons Received and Shipped - Data) prepared for the Metropolitan Council as a part of An Ecological Study for the... Wallace, McHarg, Roberts and Todd.