Pierre Alechinsky, Study for The Snowman ([Étude] L'Homme des neiges), 1956, Ink and watercolor on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/35910

Pierre Alechinsky, Vanished in Smoke, 1962, Distemper, ink, gouache and watercolor on paper on canvas, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/33616

Pierre Alechinsky, The Complex of the Sphinx, 1967, Synthetic polymer paint, oil, and ink on Japanese paper on canvas, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/37446