Adolph von Menzel, Der Bärenzwinger im zoologischen Garten (The Bear Pit in the Zoological Gardens), 1851, lithograph on Chine appliqué on wove paper, National Gallery of Art, Washington. https://dartabase.art/cite/nga/9075

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