The Shell (La caracola) , 1979. Graphite, colored pencil and gouache on paper. 13 3/4 x 10 1/8 in. (35.5 x 26 cm)

Renuncia , 1981. Colored pencil on paper. 22 x 15 in. (55.9 x 38.1 cm)

Vulvosas , 1979. Graphite and colored pencil on paper. 12 x 6 5/16 in. (30.5 x 16 cm)

Vulvosas , 1979. Ink and graphite on paper. 12 x 6 5/16 in. (30.5 x 16 cm)

Untitled , 1976. India ink, watercolor and colored pencil on paper. 19 7/8 x 15 in. (50.5 x 38.1 cm)

Claws (Tenazas) , 1978. India ink on paper. 15 x 9 in. (38 x 23 cm)

Vulvosa , 1979. Graphite on cotton paper. 8 5/8 x 11 3/4 in. (22 x 30 cm)

Vulvarrosa , 1983. Gouache, watercolor, colored pencil and graphite on paper. 13 3/4 x 9 3/4 in. (35 x 25 cm)

Vulvarrosa , 1983. Gouache, watercolor, colored pencil and graphite on paper. 13 3/4 x 9 3/4 in. (35 x 25 cm)

Terrarium , 1979-1982. Gouache, colored pencil and graphite on monoprint. 12 3/8 x 14 in. (31.5 x 35.5 cm)

Terrarium , 1979-1982. Gouache, colored pencil and graphite on monoprint. 12 3/8 x 14 in. (31.5 x 35.5 cm)

Terrarium , 1979-1982. Gouache, colored pencil and graphite on monoprint. 12 3/8 x 14 in. (31.5 x 35.5 cm)

Terrarium , 1979-1982. Gouache, colored pencil and graphite on monoprint. 12 3/8 x 14 in. (31.5 x 35.5 cm)

Terrarium , 1979-1982. Gouache, colored pencil and graphite on monoprint. 12 3/8 x 14 in. (31.5 x 35.5 cm)

Vulvosa , 1979-1980. Acrylic, gouache and graphite on canvas. 11 x 11 in. (28 x 28 cm)

Vulvosa , 1979-1980. Acrylic, gouache and graphite on canvas. 11 x 11 in. (28 x 28 cm)

Vulvosa , 1979-1980. Acrylic, gouache and graphite on canvas. 11 x 11 in. (28 x 28 cm)

Vulvosa , 1979-1980. Graphite on cotton paper. 14 1/8 x 7 5/8 in. (36 x 19.5 cm)

Vulvosa , 1979-1980. Graphite on cotton paper. 14 1/8 x 7 5/8 in. (36 x 19.5 cm)

Vulvosa , 1979-1980. Graphite on cotton paper. 14 1/8 x 7 5/8 in. (36 x 19.5 cm)

Mitosis , 1976-1977. Graphite on paper. 7 1/4 x 11 1/4 in. (18.4 x 28.6 cm)

Mitosis , 1978. Graphite on paper. 10 5/8 x 15 in. (27 x 38 cm)

Mitosis , 1978. Graphite on paper. 10 5/8 x 15 in. (27 x 38 cm)

Memo , 1978. Acrylic, permanent marker and ballpoint pen on canvas. 16 7/8 in. (43 cm) in diameter

Memo , 1978. Acrylic, permanent marker and ballpoint pen on canvas. 16 7/8 in. (43 cm) in diameter