Harley E. Warrick (October 5, 1924 – November 24, 2000), was a barn painter, best known for his work painting Mail Pouch tobacco advertising on barns across 13 states in the American Midwest and Appalachian states. Over his 55-year career, Warrick painted or retouched over 20,000 Mail Pouch signs. When he retired, he was the last of the Mail Pouch sign painters in America. The Mail Pouch signs have become iconic and some of Harley Warrick’s work has been exhibited by the Smithsonian Institution. Though he was not the first or the only Mail Pouch barn painter, he was the most prolific and famous.