By Pierre Alechinsky, John Baldessari, Max Beckmann, Hans Burkhardt, Willem De Kooning, Max Ernst, Oskar Fischinger, Arshile Gorky, Patrick Graham, David Hockney, Käthe Kollwitz, Roy Lichtenstein, Man Ray, Henri Matisse, Roberto Matta, Joan Miró, Henry Moore, Pablo Picasso, Robert Rauschenberg, Diego Rivera, Ed Ruscha, Mark Tobey, Andy Warhol, Ruth Weisberg, Jerome Witkin, Francisco Zúñiga, and others.