Mickey Mouse is cast in the part of Bob Crachit in Disney's adaptation of a seminal Charles Dickens classic.
Mickey's Christmas Carol posits Donald Duck (Clarence Nash, in his final performance) as Fred, the nephew of Ebenezer Scrooge, who in turn is, appropriately, embodied by Donald's Uncle Scrooge (Alan Young, ex-Mr. Ed). Many of your Disney favorites are crammed into this edition.
Subsequent cable replays have edited key scenes in order to fit in extra commercials, which is a terrible shame. Hal Smith (Davey & Goliath, ex-The Andy Griffith Show) is heard as Goofy for the first, and probably only, time, pinch-hitting for Pinto Colvig, who'd passed on.