MILLER Joan
Joan Maxine.
Date of birth : June 1, 1922, New York.
Arthur Miller's younger sister.
She became actress under the name of Joan Copeland ;,,
On September 1st, 1943, she married George Joseph Kupchik (July 28, 1914, New York-July 26, 1989, New York). They remained married until his death.
They had a son Eric (born on October 21, 1951).
July 1, 1956, religious wedding of Arthur and Marilyn
Check from Joan to Marilyn dated July 1st, 1956
December 18, 1956, party at the Waldorf-Astoria for the premiere of the play "Baby Doll"
November 18, 1957, at the time of the play "Conversation Piece" ;