1939 was a great year for Thomas Mitchell.
Stagecoach (1939) as Doc Josiah Boone
Only Angels Have Wings (1939) as Kid Dabb
Mr. Smith Goes to Washington (1939) as Diz Moore
Gone with the Wind (1939) as Gerald O'Hara
The Hunchback of Notre Dame (1939) as Clopin
He sure played alot of alcoholics, including 3 of those 5 movies: Stagecoach, Mr. Smith, and Gone With the Wind. Another one everyone knows him for is It's A Wonderful Life.