Official road map, Montana / Conoco Travel Bureau.H.M. Gousha Company[1937]Conoco logo at head of title.In lower right: 9-K.Indexed.Relief shown by shading and spot heights.Road maps of "Glacier National Park (Waterton-Glacier Internat'l Peace Park)" and "Yellowstone National Park and Grand Teton National Park, Wyoming," 5 local route maps, text, and ill. on verso.cartographic