William Boyd. William Boyd was 42 in Partners of the Plains as 'Hopalong Cassidy'.
Gwen Gaze. Gwen Gaze was 28 in Partners of the Plains as 'Lorna Drake'.
Harvey Clark. Harvey Clark was 52 in Partners of the Plains as 'Baldy Morton'.
Russell Hayden. Russell Hayden was 25 in Partners of the Plains as 'Lucky Jenkins'.
John Warburton. John Warburton was 38 in Partners of the Plains as 'Ronald Harwood'.
Hilda Plowright. Hilda Plowright was 47 in Partners of the Plains as 'Aunt Martha'.
Al Bridge. Al Bridge was 46 in Partners of the Plains as 'Scar Lewis'.
Al Hill. Al Hill was 45 in Partners of the Plains as 'Doc Galer'.John Beach. John Beach was 34 in Partners of the Plains as 'Mr. Benson'.
Earle Hodgins. Earle Hodgins was 44 in Partners of the Plains as 'Sheriff'.
Jim Corey. Jim Corey was 48 in Partners of the Plains as 'Dialogue Gunman at Cabin Shootout'.
Herman Hack. Herman Hack was 38 in Partners of the Plains as 'Posse Rider'.Bud McClure. Bud McClure was 54 in Partners of the Plains 
Bob Burns. Bob Burns was 53 in Partners of the Plains as 'Cowhand'.
Lesley Selander. Lesley Selander was 37 in Partners of the Plains as 'Director'
Russell Harlan. Russell Harlan was 34 in Partners of the Plains as 'Director of Photography'Derwin Abrahams. Derwin Abrahams was 34 in Partners of the Plains as 'Assistant Director'Theodore Joos. Theodore Joos was >> in Partners of the Plains as 'Assistant Director'Harrison Jacobs. Harrison Jacobs was >> in Partners of the Plains as 'Screenplay'Harry Sherman. Harry Sherman was 53 in Partners of the Plains as 'Producer'Robert B. Warwick Jr.. Robert B. Warwick Jr. was 29 in Partners of the Plains as 'Editor'Lewis J. Rachmil. Lewis J. Rachmil was 29 in Partners of the Plains as 'Art Direction'Clarence E. Mulford. Clarence E. Mulford was >> in Partners of the Plains as 'Story'
Eugene Strong. Eugene Strong was 44 in Partners of the Plains as 'Production Manager'