Master of the First Prayerbook of Maximillian, Hours of Queen Isabella the Catholic, Queen of Spain, c. 1500, ink, tempera, and gold on vellum, Cleveland Museum of Art, Cleveland. https://dartabase.art/cite/cleveland/138885

Master of the Brussels Initials and Associates, Hours of Charles the Noble, King of Navarre (1361-1425), c. 1404, ink, tempera, and gold on vellum, Cleveland Museum of Art, Cleveland. https://dartabase.art/cite/cleveland/140492

Bartolomé Esteban Murillo, Madonna Nursing the Christ Child, c. 1670–72, pen and brown ink and brush and brown wash over red and black chalk, with traces of white; framing lines in pen and brown ink, Cleveland Museum of Art, Cleveland. https://dartabase.art/cite/cleveland/144216