Harpo Marx York accent his entire life. According to those who personally knew him, Harpo's voice was much deeper than Groucho's, but it also sounded very similar to Chico's. His son, Bill, recalled that in private Harpo had a very deep and mature soft-spoken voice, but that he was "not verbose" like the other Marx brothers; Harpo preferred listening and learning from others. Harpo's final public appearance came on January 19, 1963 with singer/comedian Allan Sherman. Sherman burst into tears when Harpo announced his retirement from the entertainment business. Comedian Steve Allen, who was in the audience, remembered that Harpo spoke for
Marx Brothers special material for the show, but the script for the classic "Napoleon Scene" was probably supplied by Groucho. On January 16, 1977, the Marx Brothers were inducted into the Motion Picture Hall of Fame. With the deaths of Gummo in April 1977, Groucho in August 1977, and Zeppo in November 1979, the brothers were gone. But their impact on the entertainment community continues well into the 21st century. Many television shows and movies have used Marx Brothers references. "Animaniacs" and "Tiny Toons", for example, have featured Marx Brothers jokes and skits. Hawkeye Pierce (Alan Alda) on "M*A*S*H" occasionally put on