Elly, Then, the third place to send this, after the first two confirm, would be to a publisher, as, we'all would prefer you get credit for this, and possibly make a few sheckles, than some ripoff artist.
Chester and the Mrs.
Looking at those clips I don't think that there can be any doubt, it certainly rewrites Duke's history well done everyone.
It may well do some rewriting of Dukes film history, I would recommend sending what you have found with a written explanation to Wayne Enterprises down in Newport Beach, California, Att: Ethan Wayne.
Then send another packet to Brian Downes at the John Wayne Birthplace Museum in Winterset, Iowa, as a start.
Don't bother sending it to DS at the "Official" site, as, ridicule would be forthcoming.