I'm not really sure exactly where to post this, but since it concern's John Wayne's 1936 film, The Oregon Trail, I figure here might be good place. I came across this article today from BBC news magazine. It's a good read, and the article contains a couple of links to clips of John Wayne interviews (including part of the Parkinson interview from 1974). All I can say regarding the article is, What A Find! Here's the URL: http://www.bbc.co.uk/news/magazine-24407455