 "Richard F. Irvine" came into service on May 20, 1973, but was renamed "The Liberty Belle" in 1996 after everything except for the hull, boiler, and engines was stripped off, and an all-new superstructure was constructed from aluminum and vinyl.In 2018, the "Liberty Belle" was completely overhauled with a brand-new boiler.The Frontierland area of Disneyland Park has the unique distinction of featuring two riverboats, "Mark Twain" and "Molly Brown".