...One Third of a Nation...  ... One Third of a Nation... is a 1939 American drama film directed by Dudley Murphy and written by Oliver H.P. Garrett and Dudley Murphy. The film stars Sylvia Sidney, Leif Erickson, Myron McCormick, Hiram Sherman, the future director Sidney Lumet and Muriel Hutchison. The film was released on February 10, 1939, by Paramount Pictures.