Tom and Jerry: Redskin Blues (1932) (Cartoon 5:58)

Plot taken from IMDb: Tom and Jerry find their wagon west attacked by Indians, but escape only after being rescued by all the branches of the military, including the Army's tanks. A cartoon with lots of music and action as well as ethnic stereotypes the 1930s way: "An unremarkable wild west cartoon is improved by the comedy of the unexpected. Numerous seemingly fat, cloaked Indians are unwrapped to reveal beautiful girls; when the cavalry leader uncloaks the Chief, he's revealed as a Jewish caricature. The Jewish Indian was a standard vaudeville gag at the time, in part the result of Fanny Brice's hit song on the theme (I'm an Indian)."

From reruncentury.com