Canada. Office of the Surveyor GeneralFrom surveys made in the Summer of 1921 by the Topographical Surveys Branch.; Relief 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."56 x 81 centimetersJPEGUMN_ALMA:9974771280101701engSurveyor General (Ottawa)PublicMap of Mackenzie River : Providence to Simpson, Northwest TerritoriesMapsNorthwest TerritoriesCanada1921University of Minnesota