Giulio Campagnola, Venus Reclining in a Landscape, c. 1508–9, engraving, Cleveland Museum of Art, Cleveland. https://dartabase.art/cite/cleveland/112586

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