Simulated Color Mosaic
1969
Sine Curve Man (1967)
1967
Sine Curve Man (1968)
1967-1968?
Sine Curve Man (1969)
1969
Sineman Two
1967
Sketch for a mural
1969
Sketchbook
1975
Skizzen zu Velen
1972
Skulptur 2/86 (I) | sculpture 2/86 (I)
Slant
1969
Snail
mid 1960s
Socrates' Garden
1984
Solid surface
1974
Sommaire 7
1994
Sonne über dem Wasser
1982
Sound Activated Mobile (SAM)
South temple
1981
Spiralnebel
1985
Splish Splash One
1974
Splish Splash Two
1975
Square Tonal Drawing
1978
Squares, 1974
1974
Stanislav Lem
Statisch-metrische Modulation
1959/60
Stereodepth
1971
Still-life
1952
Struktur von Vierecken
1988
Studies in Perception I - Telephone
Studies in Perception II - Gulls
Studies in Perception III - Gargoyle