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
The Taming of the Shrew on screen starring Arthur Backner. This version is also lost. Intended more as a showcase for a new type of sound system than an adaptation of the play, the film consisted entirely of the scene where Petruchio and Katherina first meet. Shot using a process known as Voxograph, the actors spoke the complete text during filming, and when the film was played at the theatre, "the same actors, one at each side of the screen but unseen, repeated the words in what was supposed to be synchronisation. It was expected that the operator, after rehearsal, would be able to project the film