Studies for Drop I 1987 Material: Pencil and Indian ink on paper Size: 21.5 x 28 cm

Studies for Elements and Drops IV 1987 Material: Indian ink on paper Size: 21.5 x 28 cm

Study for Elements and Drops V 1987 Material: Indian ink on paper Size: 21.5 x 28 cm

Study for Elements and Drops V 1989 Material: Pencil on paper Size: 21.5 x 28 cm

Center A 1977 Material: Graphite on paper and photographic negative Size: 23 x 30 cm Guadalajara Collection

Out Center 1977 Material: Graphite on paper and photographic negative Size: 23 x 30 cm Guadalajara Collection

Spatial Study 1977 Material: Graphite on paper and photographic negative Size: 23 x 30 cm Guadalajara Collection

Wall 1977 Material: Graphite on paper and photographic negative Size: 23 x 30 cm Guadalajara Collection

Transparent Wall Elements 1977 Material: Graphite on paper and photographic negative Size: 23 x 30 cm Guadalajara Collection

Wall and Floor 1977 Material: Graphite on paper and photographic negative Size: 23 x 30 cm Guadalajara Collection

Material: Graphite on paper and photographic negative Size: 23 x 30 cm Guadalajara Collection

Spatial Spheres Material: Graphite on paper and photographic negative Size: 23 x 30 cm Guadalajara Collection Homage to Pol Bury

Surface 1976 Material: Graphite on paper and photographic negative Size: 23 x 30 cm Guadalajara Collection

Spatial Square 1977 Material: Graphite on paper and photographic negative Size: 23 x 30 cm Guadalajara Collection

Clock 1977 Material: Graphite on paper and photographic negative Size: 23 x 30 cm Guadalajara Collection

Studies for Circles and Squares 1977 Material: Graphite on paper and photographic negative Size: 23 x 30 cm Guadalajara Collection