John Wayne Movie Posters

I knew that John Wayne was prolific actor, and that I had not seen all of his movies, but a post on Golden Age Comicbook Stories reveals the massive extent of my understatement.  In the scan of over 50 John Wayne movie posters, I had only seen one of the films, and heard of a few others.  The rest were completely unknown to me.  Many are early westerns, but there are also some non-western films.  By the way, "Duke" was Wayne's horse.