Rio Grande Northern Railroad, 1892 (USGS Bulletin)         Source: Charles D. Walcott, Geological Survey (U.S.), Department of the Interior, Bulletin of the United States Geological Survey No. 164, U.S. Department of the Interior, Washington, D.C., 1895. Plate VI.                                 [top]         Maps were scanned and text proofread from the original source documents by Murry Hammond. Contact Murry for all corrections, additions, and contributions of new material.