Proyecto para cubo transitable , 1967 (Project for Penetrable Cube). Enamel and acrylic on metal. 8 x 8 x 8 in. (20.3 x 20.3 x 20.3 cm.)
Cubo transitable , 1967 (Penetrable Cube) Painting on wood, 79 x 79 x 78 ¾ in. (200.7 x 200.7 x 200 cm.)
Cuatro por cuatro por cuatro , 1968 (Four by Four by Four) Acrylic on paper. 11 ¼ x 11 ¼ in. (28.5 x 28.5 cm.)
Combinaciones cromáticas –Serie ponchos– , 1970 (Chromatic Combinations, –Series Ponchos–) Acrylic on paper. 11 x 17 ¾ in. (28 x 45 cm.)
Proyecto para cubo transitable , 1967 (Project for Penetrable Cube) Graphite and color pencil on paper. 18 x 24 in. (46 x 61 cm.)
Proyecto para cubo transitable , 1967 (Project for Penetrable Cube) Graphite and color pencil on paper. 19 x 25 ½ in. (50 x 65 cm.)
Foreground: Sistema monocromo , 1968 (Monochrome System) Enamel and acrylic on metal. 7 â…ž x 3 â…ž in. (20 x 10 cm) each. 9 units. Background: Proyecto de sistema monocromo , 1968 (Project for Monochrome System) Graphite and acrylic on paper. 18 â…ž x 23 â… in. (48 x 60 cm.)
Sistema de color , 1969 (Color System) Graphite and acrylic on paper. 16 ⅞ x 25 ½ in. (43 x 65 cm.)
Sistema cromático , 1967 (Chromatic System) Graphite and acrylic on paper. 11 ⅞ x 19 ¼ in. (30 x 49 cm.)
Sistema cromático –primarios– , 1968 (Chromatic System –Primary–) Graphite and acrylic on paper. 19 x 24 in. (48 x 61 cm.)
Sistema de color , 1969 (Color System) Graphite and acrylic on paper. 16 ⅞ x 25 ⅜ in. (43 x 64.5 cm.)
Trama, color y luz , 1969 (Woof, Color and Light) Acrylic on paper. 16 ⅞ x 25 ½ in. (43 x 65 cm.)
Tramando colores y luces , 1972 (Intertwining Colors and Lights) Acrylic on paper. 12 ½ x 17 ¼ in. (32 x 44 cm.)
Sistema cromático , 1972 (Chromatic System) Cotton thread, painting and wood. 23 â… x 19 ¼ in. (60 x 49 cm.)
Trama cromática , 1972 (Chromatic Intertwining) Painted cotton rope. 78 ¾ x 118 1⅛ in. (200 x 300 cm.)