Many presidents had unusual careers before entering the White House. Jimmy Carter, the 39th president, was a peanut farmer. Ronald Reagan, the 40th president, was a movie actor. And Abraham Lincoln, the 16th president, once worked chopping rails for fences. According to John Riley of the White House Historical Association, Harry Truman was a haberdasher. A haberdasher (HAB-er-dash-er) is someone who deals in men's clothing and accessories, particularly hats.