Marx Brothers made a guest appearance to introduce the "Tonight Show's" new host, Johnny Carson. Around 1960, the acclaimed director Billy Wilder considered writing and directing a new Marx Brothers film. Tentatively titled "A Day at the U.N.", it was to be a comedy of international intrigue set around the United Nations building in New York. Wilder had discussions with Groucho and Gummo, but the project was put on hold because of Harpo's ill-health and abandoned when Chico died in 1961. He was 74. Three years later, on September 28, 1964, Harpo died at the age of 75 of a heart attack
Sam Marx travel to New Jersey, and sell them door-to-door. In his last interview, Zeppo joked that his father "was a very bad tailor but he found some people who were so stupid that they would buy his clothes, and so he'd make a few dollars that way for food". Marx made a cameo appearance in his four sons' film "Monkey Business" (1931), sitting on top of luggage behind the brothers on the pier as they wave to the First Officer, having slipped off the ship without being arrested as stowaways. (In some interviews, the brothers mistakenly attributed this scene to "A