Sam Gilliam, Watercolor, 4, 1969, Watercolor, and aluminum powder on fiberglass paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/37186

Sam Gilliam, [Untitled], 1971, Dye stain on mulberry paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/37566