Groucho's Letter to Warner Brothers

While preparing to film a movie entitled A Night in Casablanca, the Marx brothers received a letter from Warner Bros. threatening legal action if they did not change the film’s title. Warner Bros. deemed the film’s title too similar to their own Casablanca, released almost five years earlier in 1942, with Humphrey Bogart and Ingrid Bergman. In response Groucho Marx dispatched the following letter to the studio’s legal department: