Wood I, 1963

On a Ckear Day, 1973, Fort Worth, Museum of Modern Art

Untitled, 1960

Untitled, 1991, Amsterdam, Stedelijk Museum

Aspiration, 1960

Untitled, 2004

Untitled, 1975, New York, Museum of Modern Art

White Flower, 1960, New York, Solomon R. Guggenheim Museum.

Friendship, 1966