Casablanca (film) in 1942 to work on the "Why We Fight" series in Washington, D.C. While they were gone, the other credited writer, Howard Koch, was assigned; he produced thirty to forty pages. When the Epstein brothers returned after about a month, they were reassigned to "Casablanca" and—contrary to what Koch claimed in two published books—his work was not used. The Epstein brothers and Koch never worked in the same room at the same time during the writing of the script. Koch later commented, "When we began, we didn't have a finished script ... Ingrid Bergman came to me and said, 'Which
A Night in Casablanca film "Casablanca." Groucho responded with a letter asserting that he and his siblings had use of the word "brothers" prior to the establishment of Warner Brothers (and many others had before that), and often the story is told that Groucho threatened a counter-suit based on this assertion. He also mentioned that he would consider further legal action by pointing out to Warners that the title of their current hit film "Night and Day" infringed on the titles of two Marx Brothers films: "A Night at the Opera" and "A Day at the Races". The true story is that the original