Untitled 1968. Watercolor on paper, 10 x 13 inches (25.4 x 33 cm)
Untitled 1968. Watecolor on paper, 10x13 inches (25.4 x 33cm) Collection of the British Museum, London
Untitled, 1969. Watercolor on paper, 11 x 14 inches (27.9 x 35.6 cm)