I moved it to Talking About Talkies, Site Chat is for things specifically related to the operation of NitrateVille.
“Here’s the thing about black and white. It’s not literal—it is a metaphor, automatically. If you’re in black and white, it is already saying, ‘No, this is not life, this is something about life.’” —Mike Nichols
Several years ago, I spent a few hours in a library going through Stephen A. Black's O'Neill biography: http://tinyurl.com/3upyd78
I didn't read it cover to cover and can't compare it with other works on O'Neill, but Black seemed to have a good handle on his subject. Several passages and descriptions have stayed with me all this time, and it seems as good of a place to start as any.