Birdseye, C. H. (Claude Hale), 1878-1941Hassan, A. F.Henderson, Charles W. (Charles William), 1885-Follansbee, Robert, 1879-19522017-07-172022-02-032017-07-172022-02-031924https://hdl.handle.net/11124/171049Relief shown by shading.Color.Includes index of mining districts and water-power plants. Series: Professional paper (Geological Survey (U.S.)); 138, plate 1.62 x 84 cmmine mapsengMining districts -- Colorado -- MapsHydroelectric power plants -- Colorado – MapsStillImage