Conversation so far:
What was significant about Carl Switzer's adult years?
Carl Switzer's tenure on Our Gang ended in 1940, when he was twelve.
Did Carl Switzer star in any movies in his adult years?
Carl Switzer had an uncredited role as Auggie in the 1943 film The Human Comedy.
What other acting did Carl Switzer do besides in the 1943 film The Human Comedy?
Carl Switzer had small parts in both the 1946 Christmas film It's a Wonderful Life and again in the 1948 film On Our Merry Way.
Did Carl Switzer do anything besides acting?
Besides acting, Carl Switzer bred and trained hunting dogs and guided hunting expeditions.
Are there any other interesting aspects about Carl Switzer's adult years?
Carl Switzer had a supporting role in Mrs. Wiggs of the Cabbage Patch and appeared in films including Johnny Doughboy, Going My Way, and The Great Mike.
Were the Carl Switzer films Mrs. Wiggs of the Cabbage Patch, Johnny Doughboy, Going My Way, and The Great Mike successful?
Did Carl Switzer work with anyone else notable?
In 1952, Carl Switzer played a busboy in the film Pat and Mike starring Spencer Tracy and Katharine Hepburn.
What was Carl Switzer's final movie?
Carl Switzer's final film role was in the drama The Defiant Ones.

Question: When was that?
Self-contained rewrite: When was Carl Switzer's final film, The Defiant Ones?