Transformable 11 , 1967. Lacquer on wood. 37 ¼ x 37 ¼ in. (95.3 x 95.3 cm.)

Transformable 24 , 1967. Lacquer on wood. 37 ¼ x 37 ¼ in. (95.3 x 95.3 cm.)

Estructura 1 , 1967. (Structure 1) Lacquer on wood. 24 ¾ x 24 ¾ in. (63 x 63 cm.)

Etude N. 2 , 1951. Acrylic on canvas. 18 x 21 ¾ (46 x 51 cm.)

Dos azules , 1953. (Two Blues) Ripolin on wood. 18 x 22 in. (45.7 x 56 cm.)

Expansión II , 1967. Lacquer on wood. 24 ¾ x 24 ¾ in. (63 x 63 cm.)