Defying Categories: Helen Frankenthaler, 1928-2011 » Helen Frankenthaler, Mountains and Sea, 1952. Oil and charcoal on canvas, 86-5/8 x 117-1/4 inches. On extended loan to the National Gallery of Art, Washington, D.C. © Helen Frankenthaler/ Artists Rights Society (ARS), New York

Helen Frankenthaler, Mountains and Sea, 1952. Oil and charcoal on canvas, 86-5/8 x 117-1/4 inches. On extended loan to the National Gallery of Art, Washington, D.C. © Helen Frankenthaler/ Artists Rights Society (ARS), New York

click to enlarge