Tony wrote:Do you know if Welles directed it?
Given that all the footage is taken directly from Chimes, I think it's a safe bet to say he directed it! What you are asking -- correct me if I'm wrong -- is whether Welles edited the trailer himself, or had a creative hand in its construction. My guess is yes, he did, although we may never know for sure.
The Hollywood trailers -- other than Kane -- are a slightly different matter, I think. I can't imagine Welles having a creative hand, say, in the Ambersons trailer, given that he had little or no power over the editing of the film itself. The snippet of the boarding house scene that still exists in the trailer is probably just a hangover from the confused editing process. (Anyone here who is a fan of Sam Peckinpah can see similarly unique outtakes in the trailer for Pat Garrett and Billy the Kid, a film that -- like Ambersons -- was wrestled from the director's hands in the early stages of editing.)