Harpo Marx on Harpo. Harpo later played the role in Los Angeles opposite Woollcott, who had inspired the character of Sheridan Whiteside. In 1961 Harpo published his autobiography, "Harpo Speaks". Because he never spoke a word in character, many believed he actually was mute. In fact, radio and TV news recordings of his voice can be found on the Internet, in documentaries, and on bonus materials of Marx Brothers DVDs. A reporter who interviewed him in the early 1930s wrote that "he [Harpo] ... had a deep and distinguished voice, like a professional announcer", and like his brothers, spoke with a New
Marx Brothers one day after heart surgery. In 1966 Filmation produced a pilot for a Marx Brothers cartoon. Groucho's voice was supplied by Pat Harrington Jr. and other voices were done by Ted Knight and Joe Besser. In 1970, the four Marx Brothers had a brief reunion of sorts in the animated ABC television special "The Mad, Mad, Mad Comedians", produced by Rankin-Bass animation (of "Rudolph the Red-Nosed Reindeer" fame). The special featured animated reworkings of various famous comedians' acts, including W. C. Fields, Jack Benny, George Burns, Henny Youngman, the Smothers Brothers, Flip Wilson, Phyllis Diller, Jack E. Leonard, George Jessel