 After a long separation, Baum divorced his wife in 1921.Baum licensed the novel to I. E. Chadwick and Larry Semon, who created "Wizard of Oz" (1925).The film that was ultimately created bears the writing credit "L. Frank Baum, Jr., Leon Lee, and Larry Semon", with Lee also credited as title writer, though Frank J. may or may not have actually collaborated on the screenplay.