The corporate name honors the four founding Warner brothers (born Wonskolaser) —Harry (born Hirsz), Albert (born Aaron), Sam (born Szmul), and Jack (Itzhak or to some sources Jacob). The three elder brothers began in the movie theatre business, having acquired a movie projector with which they showed films in the mining towns of Pennsylvania and Ohio. They opened their first theater, the Cascade, in New Castle, Pennsylvania in 1903. In 1904, the Warners founded the Pittsburgh-based Duquesne Amusement & Supply Company, to distribute films. In 1912, Harry Warner hired an auditor named Paul Ashley Chase. By the time of World War I they had begun producing films, and in 1918 the brothers opened the Warner Bros. studio on Sunset Boulevard in Hollywood. Sam and Jack Warner produced the pictures, while Harry and Albert Warner and their auditor and now controller Chase handled finance and distribution in New York City. It was during World War I and their first nationally syndicated film was My Four Years in Germany based on a popular book by former American Ambassador James W. Gerard. On April 4, 1923, with help from a loan given to Harry Warner by his banker Motley Flint, they formally incorporated as Warner Brothers Pictures, Incorporated. However, as late as the 1960s, Warner Bros. claimed 1905 as its founding date.