Peter Paul Rubens, The Garden of Love (left portion), c. 1633–35, Pen, brown ink, brush and gray-green wash over traces of black chalk, touched with indigo, green, yellowish, and white paint, The Metropolitan Museum of Art, New York. https://dartabase.art/cite/met/334653

Anonymous Artist, Judith with the Head of Holofernes, c. 1480, pen and dark brown ink with black chalk and white heightening on olive-brown prepared paper laid down on canvas, National Gallery of Art, Washington. https://dartabase.art/cite/nga/319

Anonymous Artist, Christ before Pilate, 1606, brush and brown ink on brown paper, National Gallery of Art, Washington. https://dartabase.art/cite/nga/1841

Anonymous Artist, An Oriental, 1606, pen and brown ink with brush and brown-black ink on laid paper, National Gallery of Art, Washington. https://dartabase.art/cite/nga/1851

Peter Paul Rubens, Susanna, 1577, Pen and brown ink, brush and brown wash, The Metropolitan Museum of Art, New York. https://dartabase.art/cite/met/334709

Ung-no Lee, Sailing, 1957, Ink and colored ink on paper on scroll, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/33864

Ung-no Lee, Composition, (1959), Colored ink on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/34154