Duluth Superior Transit Company, Duluthtwo sided brochure; Bus Guide and City Map: federal Office of Defense Transportation; under war time conditions; how riders may help speed up service; war transportation and national defenseJPEGengDuluth Superior Transit CompanyPublicTransportationMap of Duluth: Bus Guide and City MapMapsMinnesota--DuluthMinnesota--Saint Louis CountyMinnesota1942 - 1945University of Minnesota