Enrique Brinkmann, Procession, 1962, Ink and pencil on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/33713

Pablo Picasso, The Pool, January 30, 1968, Pencil on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/34830

Eduardo Chillida, Around the Void II (Alrededor del vacio II), 1965, Forged steel, Art Institute of Chicago, Chicago. https://dartabase.art/cite/aic/93444

Antonio Saura, Crucifixion, 1960, Collage and ink on black paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/33329

Eduardo Chillida, [Untitled], (1966), Ink on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/33342

Antonio López García, The Staircase, 1967, Pencil and wax on paper on board, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/34492

Pablo Picasso, [Untitled], 1969, Ballpoint pen on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/35587

Antonio Saura, Señorita, 1960, Gouache and ink on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/37185

Pablo Picasso, Figures, 1967, Ink on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/36254