Warhol has been the subject of numerous retrospective exhibitions, books, and feature and documentary films. The Andy Warhol Museum in his native city of Pittsburgh, which holds an extensive permanent collection of art and archives, is the largest museum in the United States dedicated to a single artist. Many of his creations are very collectible and highly valuable. The highest price ever paid for a Warhol painting is US$105 million for a 1963 canvas titled "Silver Car Crash (Double Disaster)"; his works include some of the most expensive paintings ever sold. A 2009 article in "The Economist" described Warhol as the "bellwether of the art market".