Rand McNally and CompanyAlso 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 centimetersJPEGUMN_ALMA:9931166510001701engRand McNally (Chicago, Ill)PublicPure Oil pathfinder for WisconsinMapsWisconsin1928University of Minnesota