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
Biographies of Karl Marx (1925), Japanese (1930), Spanish (1932), and English (1935). Marx: Man and Fighter is a biography by Boris Nicolaievsky, first published in German in 1933. It was translated into English by Otto Mänchen-Helfen and published in 1936. Some subsequent English editions restore the notes, appendices, and bibliography omitted from the first English edition. Karl Marx: His Life and Environment is a 1939 biography of Karl Marx by Isaiah Berlin, in which Berlin argues that Marx's system of thought depends upon indefensible metaphysical presuppositions. Karl Marx: His Life and Thought is a 1973 biography of Karl Marx by political scientist David McLellan.