Willem de Kooning - Valentine, 1947
Philip Guston - Painter in Bed, 1973
Mark Rothko - Slow Swirl At the Edge of the Sea, 1944
Jackson Pollock - Easter and the Totem, 1953
Robert Motherwell - N0. 4, 1970
http://www.tate.org.uk/
http://www.moma.org/
http://www.saatchi-gallery.co.uk/