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rinkydinkydoink John Hart was The Lone Ranger for a season when a contract dispute with Clayton Moore arose.
Creighton Chaney, aka Lon Chaney Jr aka Lon Chaney.
After the success of '41 Man Made Monster, Universal studios dropped the Jr from his name and from '41 The Wolf Man, he was billed as Lon Chaney....as he is shown here, with John Hart.
Interesting thing is, Chaney had been in a number of westerns before entering the horror genre in Man Made Monster, and in later years returned to it in films like High Noon, appearances on tv like The Rifleman, Bat Masterson, Rawhide, Tombstone Territory, many others, and as noted, Last of the Mohicans.