José Ygnacio Bermúdez, Girl Playing with Dog, 1953, Ink on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/35469

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

José Ygnacio Bermúdez, Winter Drawing 1967, 1967, Incised paper with synthetic polymer paint and pencil on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/37035