Robert Motherwell, The Sculptor's Studio No. 2, 1963-64, acrylic on canvas, 72 x 45 inches, 182.9 x 114.3 cm

Robert Motherwell, Untitled, 1945, oil and sand on canvas board, 11 7/8 x 9 inches, 30.2 x 22.9 cm

Robert Motherwell, Untitled, 1986, acrylic and graphite on canvas, 16 x 20 inches, 40.6 x 50.8 cm

Robert Motherwell, Open no. 136: Blue on Beige, 1969, signed and dated, acrylic and charcoal on canvas, 12 x 16 inches, 30.5 x 40.6 cm

Robert Motherwell, [Untitled (Rust, Black, White)], 1965, 16 x 12 inches, 40.6 x 30.5 cm

Robert Motherwell, Scarlet with Gauloises No. 15, 1972, 19 1/2 x 15 1/2 inches, 49.5 x 39.4 cm