RKO Radio Pictures, Inc. ; producers, Merian C. Cooper, Ernest B. Schoedsack ; story, Merian C. Cooper and Edgar Wallace ; screen play by James Creelman and Ruth Rose ; directed by Merian C. Cooper, Ernest B. Schoedsack
Warner Bros. Pictures presents ; original story and screenplay by Burt Kennedy ; a Batjac production ; produced by Andrew V. McLaglen and Robert E. Morrison ; directed by Budd Boetticher