The National Limited was the premier train of the Baltimore and Ohio Railroad (B&O) on its route between Jersey City, New Jersey and St. Louis, Missouri, with major station stops in Washington, D.C., and Cincinnati, Ohio. (Buses took passengers from New York City to Hudson River ferries; the travelers would transfer onto trains in Communipaw Terminal in Jersey City.) It operated from 1925 to 1971. For much of its life it offered exclusive all-Pullman service, and it was the first long-distance train to be entirely air-conditioned. The National Limited was one of many trains discontinued when Amtrak began operations on May 1, 1971. Amtrak revived the name for another New York–St. Louis service which did not use the B&O route.