Alexander Calder, Cowboy and Rope Ladder, 1932, Ink on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/33549

Alexander Calder, [Untitled], 1932, Ink on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/35121

Alexander Calder, Portrait of Curt Valentin, 1947 or before, Ink on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/33007

Alexander Calder, The Catch II, 1932, Ink on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/33553

Alexander Calder, [Untitled], (n.d.), Ink on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/35130

Alexander Calder, Many, 1931, Ink on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/38688

Alexander Calder, Circus Interior, 1932, Ink on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/33545