Juan Downey, Drawing for With Energy Beyond These Walls, 1969, Pencil, crayon, and gouache on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/34928

Guillermo Núñez, Untitled (From the series: Diario de Vida de New York), 1965, Watercolor and pencil on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/35757

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

Claudio Bravo, White Package, 1967, Chalk, conté crayon, and ink on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/38562

Tony Urquhart, Summer Forms I, 1961, Oil and ink on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/36643

Zbigniew Makowski, [Untitled], 1964, Watercolor and ink on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/38583

Tony Urquhart, Forest Floor, II, 1961, Oil and ink on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/36640

Zbigniew Makowski, [Untitled], 1964, Watercolor and ink on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/37655

Zbigniew Makowski, [Untitled], 1965, Ink on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/38584

Ernesto Fontecilla, Boceto para una estatua ecuestre (Sketch for an Equestrian Statue), 1967, Pencil on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/33142

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

Andrzej J. Wroblewski, Instrument #3, 1962, Colored ink and ink on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/37075

Guillermo Núñez, Untitled (From the series: Diario de Vida de New York), 1965, Watercolor and pencil on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/35770

Rodolfo Opazo, [Untitled], 1968, Colored pencil and pencil on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/38697

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