Many sources that I've seen imply that Cooper's appearance was the reason that he was cast, and I added a specific citation about Cooper's handsomeness to the article after you wrote this, that LiteraryMaven has deleted.  Would you kindly take a look?  I think the quote that I had added helps to explain why Cooper was cast in the role.  I leave it to you; I can't argue about this any more - it has really ruined my whole day.