From the liner notes to "Mystery Train-- Classic Railroad Songs, Volume 2" (Rounder CD 1129, 1997 Rounder Records Corp. www.rounder.com): Regarding Johnny Cash's recording of "Casy Jones"--" 'rounders' is late 19th century American slang for one who frequents saloons and other establishments of questionable repute. It has nothing to do with roundhouses or other railroadiana."