Dan Flavin, Pink out of a Corner from No. 1 of December 19, 1963, October 14, 1965, Pencil and crayon on colored paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/37616

Dan Flavin, [Untitled], 1973, Crayon and ink on graph paper on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/36609