René Magritte, Perspective, (1963), Crayon on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/36809

René Magritte, The Thought Which Sees, 1965, Pencil on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/35714

Pierre Alechinsky, Outside James' Showcase, 1968, Ink on mulberry paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/32969

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, One Day, the Night, 1960, Ink on transparentized paper on canvas, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/37867

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