1. Map of trunk highway system state of Minnesota Maps University Of Minnesota Public content 1923. Minnesota. Department of Highways. Cartographic Details: Scale [1:760,320]. 1 in. = 12 mi. (W 97°--W 90°/N 49°--N 43°). "Showing conditions as of May 1, 1923." Inset: Minneapolis... McGill-Warner Co. (St. Paul, Minnesota).