ritmo paritdo , 1965. India ink on paper. 7 1/4 x 11 1/8 in. (18.5 x 28.5 cm)

ritmo ciudad nueva , 1980. Pastel on raw linen. 39 1/4 x 43 1/4 in. (100 x 110 cm)

a procura da liberdade arte , 1973. Pastel on raw linen. 33 3/4 x 22 in. (86 x 56 cm)

ritmo partido , 1965. Acrylic and pastel on canvas. 51 1/8 x 64 in. (130 x 162 cm)

partituras , 1983. India ink and colored pencil on paper. 7 1/4 x 11 1/8 in. (18.5 x 28.5 cm)

ritmo del día , 1985. Pastel on raw linen. 36 1/8 x 46 in. (92 x 117 cm)

cuaderno partituras , 1983. India ink and colored pencil on sheet paper. Closed: 13 3/4 x 10 1/2 x 1/4 in. (35.2 x 26.8 x .6 cm); Open: 13 3/4 x 21 x 1/4 in. (35.2 x 53.5 x .6 cm). Detail.

libro verde, banda azul, lomo yute , 1979. Handbound artist book; inside ink and collage on handmade paper. Closed: 7 1/2 x 12 1/2 in. (19.1 x 31.8 cm); Open: 7 1/2 x 23 in. (19.1 x 58.4 cm). Detail.

untitled , 1991. Ink, crayon and airbrush on paper. Closed: 11 3/16 x 8 5/8 x 3.4 in. (28.4 x 21.9 x 2 cm); Open: 11 3/16 x 17 in. (28.4 x 43.2 cm). Detail.

untitled , 1991. Ink, crayon and airbrush on paper. Closed: 11 3/16 x 8 5/8 x 3.4 in. (28.4 x 21.9 x 2 cm); Open: 11 3/16 x 17 in. (28.4 x 43.2 cm). Detail.

untitled , 1993. Ink on paper in amate-bound book. Closed: 5 x 8 3/8 in. (12.7 x 21.3 cm) Open: 5 x 16 3/4 in. (12.7 x 42.5 cm). Detail.

untitled , 1982. Artist book; ink on paper. Closed: 6 1/4 x 4 1/2 x 1/2 in. (16 x 11.4 1.5 cm) Open: 6 1/4 x 8 7/8 x 1/4 in. (16 x 22.5 x .6 cm). Detail.

untitled , 1982. Artist book; ink on paper. Closed: 6 1/4 x 4 1/2 x 1/2 in. (16 x 11.4 1.5 cm) Open: 6 1/4 x 8 7/8 x 1/4 in. (16 x 22.5 x .6 cm). Detail.

untitled , 1986. Ink on paper in found box. Closed: 5 1/4 x 4 1/4 x 3/4 in. (13.3 x 10.8 x 1.9 cm); Open: 5 1/4 x 101 1/2 x 3/4 in. (13.3 x 257.8 x 1.9 cm). Detail.

D y M Landau , 1974. India ink on paper. 18 1/4 x 12 in. (46.5 x 30.5 cm)