In 1917, he turned his attention to directing, making more than 50 films — including a silent film version of Edith Wharton's novel The Age of Innocence (1924) — before he won acclaim with Cimarron in 1931. The adaptation of Edna Ferber's novel Cimarron, about homesteaders settling in the prairies of Oklahoma, was the first Western to win an Academy Award as Best Picture.