The Rio Grande Railroad operated in the spectacular Colorado Rockies. Their slogan was "Through the Rockies, not Around Them." Photos include 2-8-0 Consolidations, 2-8-2 Mikado's, 0-6-0 six-wheeler, 4-6-0 ten-wheeler, the big 4-8-4 Northerns that Rio Grande liked to call "Westerns" and the larger 2-8-8-2 Mallets. Also included are Electro-Motive passenger and freight locomotives FT, F3, F7, General Purpose and Special Duty series, Electro-Motive SD40T-2 "Tunnel Motors, " SD45 and SD50 locomotives, American Locomotive PA-PB and RS-3 series, Fairbanks-Morse H-15-44, and diesel-hydraulic ML-4 locomotives from German manufacturer Krauss-Maffei.