Langwith Publishing Company (Minneapolis, Minn.)Mileage tables included.; Ancillary route maps inset: Black Hills to Yellowstone Park -- Chicago to Twin Cities.; On verso: index photographs "Along the route" and ancillary map: Langwith's special map of Black Hills region.16 x 39 centimeters, on sheet 24 x 41 centimeters, folded to 24 x 10 centimetersJPEGUMN_ALMA:9916633950001701engLangwith Pub. Co (Minneapolis, Minn)PublicLangwith's 1927 motor trails mapMaps1927University of Minnesota