"7) Frances Farmer (ISN'T SHE THE ONE WHO HAD A NERVOUS BREAKDOWN AND WAS NEVER SEEN AGAIN? )"
Frances Farmer experienced tragedy like none other.
According to this study of Hollywood - HOLLYWOOD PARTY:
How Communism Seduced the American Film Industry in the 1930s and 1940s by Kenneth Lloyd Billingsley - Farmer was hounded by the Communists of the time.
Here is another site regarding her hounding by the Commies:
http://www.geocities.com/~themistyone/reds.htm
Thanks for the link for Frances. My mother even had sympathy for her.