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The film's opening title card reads: "David L. Loew presents The Marx Bros. in A Night in Casablanca." When the Marx Bros. began to work on the film, Warner Bros., which had produced the 1942 film Casablanca, tried to prevent Loew from using "Casablanca" in the title. In letters that are reproduced in a modern source, Groucho Marx made fun of the demand. "You claim you own Casablanca and that no one else can use that name without your permission. What about 'Warner Brothers'? Do you own that, too? You probably have the right to use the name Warner, but what about Brothers? Professionally, we were brothers long before you were. We were touring the sticks as The Marx Brothers when Vitaphone was still a gleam in the inventor's eye, and even before us there had been other brothers-the Smith Brothers; the Brothers Karamazov; Dan Brothers, an outfielder with Detroit; and 'Brother, Can You Spare a Dime?'" The exchange of letters continued with requests for a plot outline from Warner Bros.' lawyers. Groucho responded: "I play Bordello, the sweetheart of Humphrey Bogart. Harpo and Chico are itinerant rug peddlers who are weary of laying rugs and enter a monastery....Across from this monastery, hard by a jetty, is a waterfront hotel, chockfull of apple-cheeked damsels, most of whom have been barred by the Hays Office for soliciting....Harpo marries a hotel detective; Chico operates an ostrich farm....Bordello spends her last years in a Bacall house." According to an November 8, 1945 Hollywood Reporter news item, an arbitration board in New York awarded producer David L. Loew the right to use the title Adventures in Casablanca. This was later changed to A Night in Casablanca. Another Hollywood Reporter news item notes that some scenes were shot on location in Palm Springs, CA. A Night in Casablanca marked the Marx Bros.' first film together since M-G-M's The Big Store in 1941; their next film together was the 1950 United Artists' release Love Happy ( for both).