This caricature of Fess as Davy, I first drew for a publication called Persistence of Vision, a first rate historical journal from the early 90s that was created by Paul F. Anderson, a very knowledgable historian on the Disney films and Disneyland park attractions from the era when Walt Disney himself was still running the studio. Though the publication has run its course, Paul continues to document the studio's classic films and attractions on his Disney History Institute blogsite. I highly recommend it!
More recently, this caricature was also used on the cover art I did for one of the volumes of Walt's People, a series of books published and edited by Didier Ghez, collecting interviews with various notables from Disney animated and live-action films, as well as those involved in the development of the Disney theme parks. Didier currently operates the Disney History blog, also devoted to the films and attractions of classic Disney.
Here's a clip of Fess Parker in his iconic role of Davy Crockett, with Buddy Ebsen (famous as Jed Clampett on The Beverly Hillbillies) as his friend, George Russel: