Herman C. Raymaker Director Rin Tin Tin Rin Tin Tin Actor John Harron John Martin Actor June Marlowe Mrs. John Martin Actor Gayne Whitman Miguel Hernández Actor Heinie Conklin Tony Actor Don Alvarado Pedro Actor Mary Louise Miller The Martin Baby Actor Ewart Adamson Screenwriter Paul Klein Screenwriter Edward Meagher Screenwriter ED Du Par Cinematographer Clarence Kolster Film Editing