Canada. Topographical SurveyRelief shown by spot heights. Depths shown by soundings.; Includes table of distances, notes, source information and 2 inset maps.; At head of title: "Department of the Interior."79 x 54 centimetersJPEGUMN_ALMA:9973974707401701engTopographical Survey of Canada (Ottawa)PublicMap of Mackenzie River : Simpson to Wrigley, Northwest TerritoriesMapsNorthwest TerritoriesCanada1923University of Minnesota