Relief shown by shading and spot heights. On January 11, 1899 the Colorado & Southern Railway was organized from the Denver, Leadville & Gunnison and the Union Pacific, Denver & Gulf reorganization. This map shows the route at this time. Wagner, F. Hol / The Colorado road : history, motive power, & equipment of the Colorado and Southern... Denver, Colo. : Intermountain Chapter National Railway Historical Society, Inc., c1970, p.21.