Miguel Ocampo, Number 166, 1957, Tempera on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/33816

Carlos Maria Miguel Squirru, Cancer, 1957, Tempera on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/35806

Raquel Forner, Moons, 1957, Colored ink on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/35671

František Kupka, An Absolute (Une Absolue) from Art of Today, Masters of Abstract Art (Art d'aujourd'hui, maîtres de l'art abstrait), Album I, 1953 (original executed in 1952), One from a portfolio of sixteen screenprint reproductions, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/31875