John Wayne appears on a 1976 episode of Donahue in front of an audience largely populated by women, and he discusses his life, his career, his stint as a singing cowboy, Ronald Reagan's political career, John Wayne impressionists, pornography, and much more. This is taken from a "Classic Donahue" rerun in 1996. Quality's not great, but there don't seem to be many Duke interviews floating around. Original source: https://www.youtube.com/watch?v=ikITxlBTxvE