Untitled (Blue-Yellow), 1959
Gouache on paper
9 1/2 by 7 7/8 inches (24.8 x 20 cm)
Untitled, 1979-80 Acrylic on canvas 123 1/4 by 248 inches (313 x 630 cm)
Untitled (SF64-075), 1964 Acrylic on paper 25 5/8 by 40 1/8 inches (65.1 x 101.9 cm)