Before the American Revolution the upper class increasingly began to support the arts, particularly through a demand for portrait paintings. The demand for portraits made Philadelphia attractive to artists and many came to the city, including William Williams who introduced oil painting to another Philadelphia artist, Benjamin West. In 1805 an art collector, believing Philadelphia the best place for the encouragement of artistic taste, offered the city numerous paintings, sculptures, engravings and other art work. To accept the gift the city formed the Pennsylvania Academy of the Fine Arts. The Academy, the oldest art school and museum in the United States, helped establish many artists. Portraitist Charles Willson Peale and sculptor William Rush helped found the Academy of the Fine Arts and artists such as Thomas Eakins, Henry Ossawa Tanner and some of the members of the Philadelphia Ten studied there. The city's major art museum, the Philadelphia Museum of Art was founded in 1876 to maintain the art exhibits from the Centennial Exposition. The museum holds over 225,000 pieces of artwork including work by Vincent van Gogh, Pablo Picasso, and Marcel Duchamp. Not far from the Museum of Art is the Rodin Museum. The museum, founded in 1929, is the largest collection of Auguste Rodin work outside France. Planned nearby is a new museum intended to hold the collection of the Barnes Foundation. In 1923 Albert C. Barnes was outraged that his collection of paintings by Paul Cézanne, Henri Matisse, Pablo Picasso and Amedeo Modigliani was so poorly received by Philadelphians when put on display at the Academy of the Fine Arts that Barnes removed the collection and housed it in a building in Merion, Pennsylvania where Barnes enjoyed denying access to most Philadelphians. The controversial decision in 2002 to, against Barnes' wishes expressed in his will, move the collection to Philadelphia was based on financial reasons. In 1991, to promote Old City art galleries, the Old City Art Association began First Fridays. On the first Friday of every month, Old City galleries hold a collaborative open house night.