Koenigliche Porzellan Manufaktur, Cup and Saucer, c. 1844–47, Porcelain, The Metropolitan Museum of Art, New York. https://dartabase.art/cite/met/2849

Friedrich Overbeck, The Lamentation, 1840–45, Graphite partly worked over with pen and black ink and heightened with white; graphite framing line, The Metropolitan Museum of Art, New York. https://dartabase.art/cite/met/334934

Koenigliche Porzellan Manufaktur, Cup and Saucer, c. 1844–47, Porcelain, The Metropolitan Museum of Art, New York. https://dartabase.art/cite/met/2847