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

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