Raúl Milián, Composition, 1951, Colored ink and ink on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/35115 José Ygnacio Bermúdez, Girl Playing with Dog, 1953, Ink on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/35469 Raúl Milián, [Untitled], 1959, Watercolor and ink on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/33761 Rodolfo Abularach, A Head for Ixtab, 1958, Ink on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/37528 Raúl Milián, [Untitled], 1959, Watercolor and ink on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/33775 František Kupka, An Absolute (Une Absolue) from Art of Today, Masters of Abstract Art (Art d'aujourd'hui, maîtres de l'art abstrait), Album I, 1953 (original executed in 1952), One from a portfolio of sixteen screenprint reproductions, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/31875 José Ygnacio Bermúdez, Microflora, 1956, Collage of paper with charcoal, pencil, tempera, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/37329