Conversation so far:
How was Stan Laurel involved with 20th Century Fox
In 1941, Stan Laurel and Oliver Hardy signed a contract at 20th Century-Fox to make ten films over five years.
What year did Stan Laurel and Hardy sign to 20th Century-Fox?
In 1941.

Question: what is the first film they made?
Self-contained rewrite: What is the first film Stan Laurel and Hardy made with 20th Century-Fox?