Hi Frank, and welcome to DukeWayne.com!
Check out my Duke media page located at http://www.jwayne.com/multimedia.shtml for many audio & video clips.
Here a direct link to the Barbara Walters interview from that page. Please note that I don't have the complete interview but what I have is what is offered in the clip.
Barbara Walters
interviews w/John Wayne(this isn't the full interview) Download