Regarding the text of the credits themselves, could you or someone with access to the 35mm scans see if it's possible to tell if apostrophes used straight-down marks (as in the preview version) or not? By 1980, it was increasingly likely for straight-down apostrophes to appear in commercial typefaces, but I think either curly marks or angled straight marks would still have been more common at the time.

They're in lots of places: Lando's aide, Luke's gunner, Wedge's gunner, JOANNE D'ANTONIO, KEVIN O'CONNELL. May have missed one or two. Especially in the larger sizes, they look a bit out of place.