Milton Avery, Excursion on the Thames, 1953, Oil on canvas, Courtesy Milton Avery Trust , and Knoedler & Company, New York

Willem de Kooning, Untitled 1, 1977, Oil on paper on canvas, Courtesy of the Willem de Kooning Foundation, New York

Willem de Kooning, Untitled II, 1977, Oil on paper on canvas, Courtesy of the Willem de Kooning Foundation, New York

Helen Frankenthaler, Adobe, Acrylic on paper, Courtesy Knoedler & Company, New York

Edward Hopper, Le Bistro or The Wine Shop, 1909, Oil on canvas, Courtesy of the Whitney Museum of American Art, New York ; Bequest of Josephine Hopper

Ellsworth Kelly, Red-Orange, 1980, Oil on canvas, Courtesy of the Museum of Contemporary Art, Los Angeles; Gift of Douglas S. Cramer

Ellsworth Kelly, Daffodil, 2004, One color lithograph, Collection of the UCLA Grunwald Center for the Graphic Arts, Hammer Museum, Los Angeles, California; Gift of Gemini, G.E.L.

Ellsworth Kelly, Sunflower II, 2004, One color lithograph, Collection of the UCLA Grunwald Center for the Graphic Arts, Hammer Museum, Los Angeles, California; Gift of Gemini, G.E.L.

Ellsworth Kelly, Leaves, 1997, Lithograph, Courtesy of the artist and the Friends of Art and Preservation in Embassies

Franz Kline, Black and White, 1957, Oil on canvas, Courtesy of the Museum of Contemporary Art, Los Angeles; The Panza Collection

Roy Lichtenstein, I'm Sorry, 1965-66, Oil and magna on canvas, Courtesy of the Broad Art Foundation, Santa Monica , California; The Eli and Edythe L. Broad Collection

Roy Lichtenstein, Sleeping Muse, 1983, Patinated bronze, Courtesy of the Estate of Roy Lichtenstein, New York (image c. Estate of Roy Lichtenstein)

Ad Reinhardt, Abstract Painting No. 5, 1962, Oil on canvas , Presented by Mrs Rita Reinhardt through the American Federation of Arts 1972

Mark Rothko, Untitled (Black and Gray), 1970, Oil on canvas, Courtesy of the Museum of Contemporary Art, Los Angeles; Gift of the Mark Rothko Foundation, Inc.

Mark Rothko, Red and Brown, 1957, Oil on canvas, Courtesy of the Museum of Contemporary Art, Los Angeles; The Panza Collection