Jan Lebenstein, Axial Figure, 1960, Felt-tip pen on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/36323

Jan Lebenstein, Axial Figure, 1960, Watercolor, ink, and ballpoint pen on graph paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/37821

Jan Lebenstein, Axial Figure, 1961, Felt-tip pen on paper on board, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/33172

Jan Lebenstein, Figure, 1962, Gouache, watercolor, and ink on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/37823