Tom Levine, Opus 67 No. 1, 1987, Charcoal on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/35267

Tom Levine, Opus 67 No. 5, 1987, Oil, pastel, graphite, and charcoal on colored paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/36325

Tom Levine, Opus 67 No. 12, 1988, Oil, pastel, graphite, charcoal, and fixative on colored paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/36320