Also shows locations where Pure Oil Company's products could be purchased.; "Copyright by Rand McNally & Company, Chicago, Ill."; Includes ancillary maps of Ashland, Appleton, Eau Claire, La Crosse, Madison, and Milwaukee on verso.; Code used for dating map in lower left corner: "J-37." 44 x 29 centimeters Scale approximately 1:1,724,000 General Map Collection
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