William BoydWilliam Boyd was 43 in In Old Mexico as 'Hopalong Cassidy'.
George 'Gabby' HayesGeorge 'Gabby' Hayes was 53 in In Old Mexico as 'Windy Halliday'.
Russell HaydenRussell Hayden was 26 in In Old Mexico as 'Lucky Jenkins'.
Al Ernest GarciaAl Ernest Garcia would have been no older than 51 in In Old Mexico as 'Don Carlos Gonzalez'.
Jan ClaytonJan Clayton was 21 in In Old Mexico as 'Anita Gonzalez'.
Trevor BardetteTrevor Bardette was 35 in In Old Mexico as 'Colonel Gonzalez'.
Betty AmannBetty Amann was 33 in In Old Mexico as 'Janet Leeds'.
Anna DemetrioAnna Demetrio was 47 in In Old Mexico as 'Elena'.
Glenn StrangeGlenn Strange was 39 in In Old Mexico as 'Burke'.
Tony RouxTony Roux was 37 in In Old Mexico as 'Pancho'.
Fred BurnsFred Burns was 60 in In Old Mexico as 'Henchman'.Edward D. VenturiniEdward D. Venturini was >> in In Old Mexico as 'Director'
Russell HarlanRussell Harlan was 34 in In Old Mexico as 'Director of Photography'Harry ShermanHarry Sherman was 53 in In Old Mexico as 'Producer'Robert B. Warwick Jr.Robert B. Warwick Jr. was 30 in In Old Mexico as 'Editor'Clarence E. MulfordClarence E. Mulford was >> in In Old Mexico as 'Characters'Lewis J. RachmilLewis J. Rachmil was 30 in In Old Mexico as 'Art Direction'
Paul Sutton
Cliff Parkinson