(left) Leon Polk Smith, "Correspondence Green-Green," 1966, acrylic on canvas, 68 1/4 x 50 1/4 in.; Conrad Marca-Relli, Untitled #3, c. 1965, oil, canvas, grommets, burlap collage on canvas, 21 x 25 3/8 in.; Richard Stankiewicz, Untitled, c. 1965-69, steel, 19 x 21 x 20 in.; Jackson Pollock, Untitled (After CR#340), 1951, screenprint, ed. 16/25, 29 x 23 in., CR1093 (P29), Ray Parker, Untitled (no. 396), 1964, oil on canvas, 81 x 82 in.