Conversation so far:
What was Arthur Miller's first play?
The Man Who Had All the Luck.
When did he write The Man Who Had All the Luck?
1940.
What was the play about?
CANNOTANSWER.
How did the play do?
won the Theatre Guild's National Award.
Did he do anything else in 1940?
In 1940, Miller married Mary Grace Slattery.
Did the couple have any children?
The couple had two children, Jane and Robert (born May 31, 1947).
Are they identical twins?
CANNOTANSWER.

Question: What other plays did he make in his early career?
Self-contained rewrite: In addition to The Man Who Had All the Luck, what other plays did Arthur Miller make in his early career?