Question: Who was a Disney writer who started out as a layout artist on 1940s cartoons including a 1943 American animated anti-Nazi propaganda short film produced by Walt Disney Productions and released in 1943 by RKO Radio Pictures ?
Sentence (from "Der Fuehrer's Face"): The film was directed by Jack Kinney and written by Joe Grant and Dick Huemer from the original music by Oliver Wallace.
Relevant evidence: No