Pat Steir, Black and White Series of Four, (1975), Pencil, crayon, and charcoal on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/37187

Pat Steir, [Untitled], (1985), Graphite, powdered graphite, charcoal, gesso, pencil, and colored ink on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/37050