Mirtha Dermisache, Untitled , c. 1970. Ink on paper. 9 2/3 x 7 1/5 in. (24.6 x 18.3 cm.)

Mirtha Dermisache, Untitled , 1970s. Ink on paper, 11 x 9 in. (28 x 23 cm.)

Mirtha Dermisache, Untitled , c. 1970. Ink on paper, 11 1/16 x 9 1/16 in. (28.2 x 23.2 cm.)

Mirtha Dermisache, Untitled , 1973. Ink on paper, 11 1/16 x 9 1/16 in. (28.2 x 23.2 cm.)

Mirtha Dermisache, Sin título. Carta , 1970s. Ink on paper, 8 7/8 x 11 1/16 in. (22.7 x 28.1 cm.)

Mirtha Dermisache, Sin título. Carta , 1970. Ink on paper, 11 x 9 in. (28 x 23 cm.)

Leandro Katz, Two Legged Sky , 1979. Graphite on graph paper, 10 1/4 x 8 1/4 in. (26 x 21 cm.)

Mirtha Dermisache, Imagen 9 (lectura vertical, grafismo tipo firma) , s.d. Ink on paper, 11 x 9 in. (28 x 23 cm.)

Mirtha Dermisache, Diez Cartas , 1970. Ink on paper, 9 x 11 in. (23 x 28 cm)

Mirtha Dermisache, Without Title, Without Number Circa 1970 , 1970. Ink on paper, 13 pages, bound. 11 1/4 x 9 1/4 in. (28.5 x 23.5 cm.)

Mirtha Dermisache, Diez Cartas , 1970/2007-2009. Print on loose paper sheets with glassine cover, 13 pages. 11 x 9 in. (27.9 x 22.9 cm.) each. First edition: Reims, 2007. Second edition: Buenos Aires, 2009

Leandro Katz, Algoritmicos , 1981. Graphite and colored pencil on paper, 10 3/4 x 13 3/4 in. (27.3 x 34.9 cm.)

Leandro Katz, Man on Horseback , 1979. Graphite on graph paper, 10 1/4 x 8 1/2 in. (26 x 21.6 cm.)

Eduardo Santiere, Starry Night 5 , 2005. Graphite and color pencil on paper, 22 1/2 x 30 in. (57.15 x 76.2 cm.)

Hector Fuenmayor, Split Bodhi Tree , 2013. Ink on cotton paper, 9 1/8 x 7 1/8 in. (23.2 x 18.1 cm.)

Hector Fuenmayor, El Ciervo del Mantra , 2013. Ink on cotton paper, 7 18/ x 9 1/8 in. (17.8 x 23.2 cm.)

Gerd Leufert, Untitled , 1973. Ink on ripped paper, 25 x 20 in. (63.5 x 50.8 cm.)

Horacio Zabala, Anteproyecto de arquitectura carcelaria para artistas , 1973. Graphite on paper, 9 x 5 in. (22.9 x 12.7 cm.)

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

Horacio Zabala, Combustión II , 1973. Ink on burnt paper, 12 1/4 x 14 7/8 in. (31.12 x 37.8 cm.)

Horacio Zabala, Anteproyecto de arquitectura carcelaria para artistas , 1973. Graphite on paper, 9 x 5 in. (22.9 x 12.7 cm.)

Luis Roldán, Respiraciones, exercises , 2013. Ink, graphite and gouache on paper, 5 1/2 x 8 in. (14 x 20.3 cm.)

Luis Roldán, Respiraciones, exercises , 2013. Ink, graphite and gouache on paper, 5 1/2 x 8 in. (14 x 20.3 cm.)

Luis Roldán, Respiraciones, exercises , 2013. Ink, graphite and gouache on paper, 5 1/2 x 8 in. (14 x 20.3 cm.)

Luis Roldán, Respiraciones, exercises , 2013. Ink, graphite and gouache on paper, 5 1/2 x 8 in. (14 x 20.3 cm.)

Luis Roldán, Respiraciones, exercises , 2013. Ink, graphite and gouache on paper, 5 1/2 x 8 in. (14 x 20.3 cm.)

Luis Roldán, Respiraciones, exercises , 2013. Ink, graphite and gouache on paper, 5 1/2 x 8 in. (14 x 20.3 cm.)

Luis Roldán, Respiraciones, exercises , 2013. Ink, graphite and gouache on paper, 5 1/2 x 8 in. (14 x 20.3 cm.)

Luis Roldán, untitled , 2004/2006. Graphite on cloth and paper, 8 1/2 x 11 in. (21.59 x 27.94 cm.)

Luis Roldán, untitled , 2004/2006. Graphite on cloth and paper, 8 1/2 x 11 in. (21.59 x 27.94 cm.)

Anna Bella Geiger, Equations No 34 , 1978. Graphite and color pencil on paper, 9 1/8 x 12 3/4 in. (23.18 x 32.39 cm.)

Anna Bella Geiger, Equations No 33 , 1978. Graphite and color pencil on paper, 9 1/8 x 12 3/4 in. (23.18 x 32.39 cm.)

Anna Bella Geiger, Equations No 30 , 1978. Graphite and color pencil on paper 9 1/8 x 12 3/4 in. (23.18 x 32.39 cm.)

Anna Bella Geiger, Equations No 21 , 1978. Graphite and color pencil on paper, 9 1/8 x 12 3/4 in. (23.18 x 32.39 cm.)

Anna Bella Geiger, Equations No 13 , 1978. Graphite and color pencil on paper, 9 1/8 x 12 3/4 in. (23.18 x 32.39 cm.)

Anna Bella Geiger, Equations No 11 , 1978. Graphite and color pencil on paper, 9 1/8 x 12 3/4 in. (23.18 x 32.39 cm.)

Anna Bella Geiger, Equations No 7 , 1978. Graphite and color pencil on paper, 9 1/8 x 12 3/4 in. (23.18 x 32.39 cm.)

Anna Bella Geiger, Equations No 2 , 1978. Graphite and color pencil on paper, 9 1/8 x 12 3/4 in. (23.18 x 32.39 cm.)

Guillermo Deisler, Sin titulo , c. 1990. Ink and stamp, 17 3/4 x 14 1/4 in. (45 x 36.4 cm.)

Guillermo Deisler, Sin titulo , 1990. Collage, 17 3/4 x 14 1/4 in. (45 x 36.4 cm.)

Guillermo Deisler, Sin titulo , 1992. Photo collage, 17 3/4 x 14 1/4 in. (45 x 36.4 cm.)

Guillermo Deisler, Latinoamerica Ahora , 1985. Photo collage, 5 7/8 x 8 1/4 in. (14 x 21 cm.)

Guillermo Deisler, Untitled , 1974. Photo collage, 9 x 7 3/4 in. (23 x 20 cm.)

Willys de Castro, Projecto Para Pintura 167 , 1956. Gouache on paper, 7 1/16 x 7 in. (18.5 x 18 cm.)

Willys de Castro, S/T , c.1959. Mixed media, 1 1/8 x 1 3/8 in. (3.5 x 5 cm.)

Willys de Castro, Estudo para objeto ativo , c. 1959. Gouache on paper, 3 1/4 x 8 1/4 in. (9.5 x 22 cm.)

Willys de Castro, S/T , c. 1950's. Graphite on paper, 7 3/16 x 7 in. (19 x 18 cm.)

Willys de Castro, Estudo para Soma entre planos , c.1959. Gouache on paper, 3 5/16 x 3 5/16 in. (10 x 10 cm.)

Alessandro Balteo Yazbeck, A proposito del arbol de las manzanas de Cezanne A , 1995. Ink on paper. 9 1/2 x 8 1/2 in. (24.13 x 21.59 cm.)

Hercules Barsotti, Untitled , c. 1950's. Gouache on paper, 8 1/4 x 12 3/8 in. (21 x 31.4 cm.)

Hercules Barsotti, Untitled , c. 1950's. Gouache on paper, 6 5/16 x 4 3/4 in. (16 x 12.1 cm.)

Hercules Barsotti, Untitled , c. 1950's. Gouache on paper, 5 3/16 x 3 5/16 in. (14 x 10 cm.)

Hercules Barsotti, Untitled , c. 1950's. Gouache on paper, 8 1/4 x 5 1/2 in. (21 x 14 cm.)

Hercules Barsotti, Untitled, c. 1950's. Graphite on paper, 8 1/4 x 7 7/8 in. (21 x 20 cm.)

Jaime Davidovich, Tape Wall Project , 1972. Graphite, paper and tape on board, 25 x 35 in. (63.5 x 89 cm.)

Osvaldo Romberg, I remember Pollock , 1975. Acrylic and graphite on paper, 27 1/4 x 39 in. (69.2 x 99 cm.)

Osvaldo Romberg, Black Malevich , 1976. Acrylic and graphite on paper, 27 1/4 x 39 in. (69.2 x 99 cm.)