Guercino, Venus and Cupid in a Chariot, 1615–17, Pen and brown ink and brush and brown wash over red chalk, Cleveland Museum of Art, Cleveland. https://dartabase.art/cite/cleveland/107189

Honoré Daumier, Art Lovers, c. 1863, Gray and black wash, charcoal, and graphite, with watercolor, on cream laid paper, Cleveland Museum of Art, Cleveland. https://dartabase.art/cite/cleveland/109042

Canaletto, Capriccio: A Palace with a Courtyard by the Lagoon, c. 1750–55, pen and brown ink and brush and gray and black washes over traces of graphite (?); framing lines in pen and brown and black ink, Cleveland Museum of Art, Cleveland. https://dartabase.art/cite/cleveland/111702