Dave Truesdale at Tangent on-line has posted an extraordinary and very long 1976 interview with Leigh Brackett and Edmond Hamilton, the last before their deaths. The interview is accompanied by appreciations from jack Williamson and James Gunn.
Here's an excerpt with Leigh Brackett discussing her work on the first film of The Big Sleep:
TANGENT: In The Big Sleep, Leigh, there's always a question Bogart fans seem to ask: Whatever happened to the chauffeur? He just dropped out about halfway through.
BRACKETT: The whole thing is confusing; the novel is confusing. I was down at the set one day and Bogart asked me who killed Owen Taylor, the chauffeur, and I said I didn't know, and they asked Bogart and he didn't know, and Hawks said let's send Chandler a wire and find out, and his answer came back, “I don't know.” It's a very confusing plot and one of my favorite novels because the forward momentum is so tremendous and the characters are so interesting that you really don't care.
HAMILTON: The Big Sleep appeared in the summer of 1946. I was assiduously playing court to this young lady, and so I was living with my sister in Arcadia and I had to go all the way downtown---not having a car at that time―to see that. Well, I got in on the middle of that damn picture, and let me tell you...it's confusing enough when you get in on the beginning of that picture. But the picture improves; by that I mean that when you overcome all the mind boggling difficulties with plot and so on-- I liked it better than I ever used to. It really had a beautiful tempo.
TANGENT: What was it like working with William Faulkner? I've heard a lot about his peculiarities.
BRACKETT: Well, he did used to disappear in the middle of a script from time to time. It didn't bother me because in any real sense we didn't work together. This was my first big job; I had had one job at Republic a month or so before doing a thing called The Vampire's Ghost, and I was three weeks on the script with another writer, and they shot the film in ten days and that was two days over schedule (laughing). They fired the cameraman after the second day because he was taking too much time. But uh, it was not the greatest film ever made.
So then this thing was dropped into my lap because Howard had read the book and liked the dialogue and put me under contract, and I'm making this thing with Humphrey Bogart, who, you know, is my favorite actor, and William Faulkner's already on the script. I walk in, you know, feeling about this big and I think how in the world am I going to work with Faulkner. Well, there was no problem. He greeted me courteously. He put the book down and said, “We will do alternate sections. You will do these chapters and I will do these chapters,” and so on. But that's the way he wanted it done. He turned around and walked into his office and I never saw him again, except to say good morning. He lived behind a wall about eight feet thick. I think you could have worked with that man for ten years and never known him. He had a few close friends... He did, he disappeared occasionally.
for the rest go here: