Highly detailed map of Central Colorado, centered on the Route of the Denver & Rio Grande RR from North of Denver to Husted's. Extends from McLaughlin and Cheops Pyr in the southwest ot Bijou Basin and Big Sandy in the southwest to Byars Station on the Kansas & Pacific RR in the northeast to Cottonwood, Floyd's Hill and Blackhawk in the northwest. Shows towns w/elevations, railroads, roads, ranches, saw mills, stores, hotels, Indian Settlements, creeks, toll gates, and substantial additional geographic and topographic detail. Based upon the expeditions of 1873 & 1876 under the command of Lieut Wm. L. Marshall & Eric Berglund. One of the most detailed maps of the region. A flawless unfolded example. An essential map for any Colorado collection.