Exhibiting artists: Milton Avery, Peter Blake, Alexander Calder, Patrick Caulfield, Jean Dubuffet, Barry Flanagan, John Hoyland, Allen Jones, Paul Klee, Henri Laurens, Fernand Leger, Roy Lichtenstein, Henri Matisse, Joan Miró, Henry Moore, Ben Nicholson, Kenneth Noland, Mimmo Paladino, AR Penck and Pablo Picasso