In answer to a question posted recently:
I managed to track down the owner of the 8mm 'Yuma' film footage after a tip-off from a forum member who knew one of the guy's acquaintances. This acquaintance was unable to contact the owner of the film but he gave me enough info (a full name) for me to find him myself. I was delighted to hear back from him and so pleased that he was willing to make such a fantastic contribution to 'Returning to Jedi'.
JD