1930. Architects and Engineers Supply Company, Ely Commercial Club (Ely, Minn.), and W.A. Fisher Company. Cartographic Details: Scale approximately 1:250,000. "This map published in cooperation with the Architects & Engineers Supply Co. Duluth, Minn." I... W.A. Fisher Co. ; Virginia, Minnesota 1930.
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1920. Dennee, Phyllis, Geological Survey (U.S.), Sealing, H. E., and United States. Forest Service. Cartographic Details: Scale [ca. 1:253,440]. 42 x 80 centimeters circa 1:253,440 General Minnesota Maps. U.S. Dept. of Agriculture, Forest Service; Washington, D.C.?.