The Encyclopedia Britannica States That The Most Prominent American Abstract Expressionist Painters Were Jackson Pollock, Willem de Kooning, Franz Kline, Mark Rothko, Joan Mitchell, Clyfford Still, Philip Guston, Helen Frankenthaler, Barnett Newman, Adolph Gottlieb, Robert Motherwell, Lee Krasner, Bradley Walker Tomlin, William Baziotes, Ad Reinhardt, Richard Pousette-Dart, Elaine de Kooning, and Jack Tworkov @ GalleryArt4Sale.Com