Moshe Kupferman, [Untitled], 1976, Synthetic polymer paint and graphite pencil on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/36704

Moshe Kupferman, [Untitled], 1977, Charcoal and graphite pencil on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/36700