 When MGM bought the rights to L. Frank Baum (qv)s novel, "The  Wonderful Wizard of Oz," it also purchased the rights to the 1902  stage musical by Baum and Paul Tietjens, and the  _Wizard of Oz (1925)_ (qv), Larry Semon (I) (qv)s failed silent  comedy. From the latter it derived Dorothys companions as farmhands  she knew in Kansas, and the it