Deformaciones y hundimientos (RA) I , 1974 (Deformations and depressions (RA) I) Pencil and acrylic on paper. 12 ½ x 8 ⅝ in. (31.8 x 21.9 cm.)

Deformaciones y hundimientos (RA) II , 1974 (Deformations and depressions (RA) II) Pencil and acrylic on paper. 12 ½ x 8 ⅝ in. (31.8 x 21.9 cm.)

Deformaciones y hundimientos (RA) I, II, III y IV , 1974 (Deformations and depressions (RA) I, II, III y IV) Pencil and acrylic on paper. 18 â…ž x 43 5/16 in. (47.9 x 110 cm.)

Terra ignota , 1973. Ink on paper. 14 5/16 x 32 7/16 in. (36.4 x 82.4 cm.)

Seis imágenes del fragmento 30 (Argentina) III , 1973 (Six images of fragment 30 (Argentina) III) Burnt printed maps and ink on paper. 16 5/16 x 21 1/16 in. (41.4 x 53.5 cm.)

Seis imágenes del fragmento 30 (América del Sur) II , 1973 (Six images of fragment 30 (Argentina) II) Burnt printed maps and ink on paper. 14 ½ x 46 5/16 in. (36.8 x 117.6 cm.)

Combustión II , 1973. Ink on burnt paper. 12 ¼ x 14 ⅞ in. (31 x 37.8 cm.)

De-formaciones en America del Sur A, B, C, D , 1974. (De-formations in South America A, B, C, D) Pencil on paper. 11 ¾ x 16 ¼ in. each (29.8 x 41.3 cm.)

De-formaciones en America del Sur A, B, C, D , 1974. (De-formations in South America A, B, C, D) Pencil on paper. 11 ¾ x 16 ¼ in. (29.8 x 41.3 cm.) Detail

De-formaciones en America del Sur A, B, C, D , 1974. (De-formations in South America A, B, C, D) Pencil on paper. 11 ¾ x 16 ¼ in. (29.8 x 41.3 cm.) Detail

De-formaciones en America del Sur A, B, C, D , 1974. (De-formations in South America A, B, C, D) Pencil on paper. 11 ¾ x 16 ¼ in. (29.8 x 41.3 cm.) Detail

De-formaciones en America del Sur A, B, C, D , 1974. (De-formations in South America A, B, C, D) Pencil on paper. 11 ¾ x 16 ¼ in. (29.8 x 41.3 cm.) Detail

Las deformaciones son proporcionales a las tensiones , 1972 (Deformations are proportional to tensions). Pencil and ink on paper. 11 x 8 in. each (28 x 20.3 cm.) Framed: 18 x 24 in.

Seis Obstrucciones de América del sur (del I al VI) , 1973 Six obstructions of South America (from I to VI) . Ink on paper. 15 ⅝ x 55 in. (39.7 x 139.7 cm.)

Record de ocultamientos , 1973. Rubber stamp on printed map. 9 ⅜ x 7 ½ in. (23.8 x 19 cm.)

Art is a jail ,1974. (Arte es un carcel) Stamps on tracing paper. 14 x 42 ½ in. (35.5 x 108 cm.)

Die Letzte Seite, Samteg/Sonntag 7/8 December 1985, Page 12 , 1985. Newspaper and oil pastel on tracing paper. 22 ⅜ x 15 ⅝ in. each (59.6 x 39.6 cm.)

El Pais, viernes 29 de noviembre de 1985, Pg 9 , 1985. Newspaper and oil pastel on tracing paper. 16 x 11 ½ in. (40.6 x 29.2 cm.)

Financial Times Wednesday May 14 1986 , 1986. Newspaper and oil pastel on tracing paper.

Le Monde censurado , 1993 (Censored Le Monde). Pastel on paper. 21 x 42 ½ in. (53.3 x 108 cm.)

Seis libros , 2011 (Six books). Acrylic on books, enamel on wood. Dimensions Variable. (Detail)

Seis libros , 2011 (Six books). Acrylic on books, enamel on wood. Dimensions Variable

Hipótesis XXIII , 2010. Acrylic on canvas, enamel on wood. Dimensions variable

Hipótesis XXV , 2010. Acrylic on canvas, enamel on wood. Dimensions Variable

Serie de las hipótesis , 2011 (Series of the Hyphoteses). Pencil and acrylic on paper. 11 ½ x 16 ½ in. (29.2 x 41 cm.) each. Installation view

Ante proyecto para tres monocromos y signo, de la Serie de las hipótesis , 2011 (Frist draft for three monochromes and a sign, from the Series of the Hyphoteses). Pencil and acrylic on paper. 16 ½ x 17 ⅞ in. (41.9 x 45.2 cm.) each. 24 pieces (Detail)

Anteproyecto para tres monocromos y tres signos, de la Serie de las hipótesis , 2011 (First Draft for Three Monochromes and Three Signs, from the Series of the Hyphoteses). Pencil and acrylic on paper. 16 ½ x 17 ⅞ in. (41.9 x 45.2 cm.) each. 24 pieces