The Railroads of South Dakota Track the evolution of railroads in the Mt. Rushmore state. Twilight of the Long Island's Cabs A final look at the long revered roster of cab units. California Zephyr A detailed account of those keeping one Amtrak train rolling. Railroad Focus City of Prineville Railway. No Longer Available RN420 Pentrex P.O. Box 94911 Pasadena, CA 91109-4911