Carl-Henning Pedersen, Ship with Tent, 1951, Pencil and ink on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/37580

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