Robert Ryman, [Untitled], 1965, Enamel on bristol board, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/37494 Robert Ryman, Eagle Turquoise 7H#4, 1966, Pencil on coffee filter paper with artist's frame, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/38432 Robert Ryman, Surface Veil 18 1/2" × 15", 1970, Oil on fiberglass with waxed paper frame and masking tape, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/34219 Robert Ryman, Untitled, Bruxelles, 1974, Polymer paint on vinyl mounted on composite board, Tate, London. https://dartabase.art/cite/tate/AR00343