Repentirs
1992
Return to Square A
1967 / 68
Return to Square B
1967 / 68
Roman views angel choir fresco
1954
Rotationen
about 1970-73
Rotozaza
Running Cola is Africa!
1968
Répartition
1961
Röntgenaufnahme
1958
Röst
1959
Salsa Samba
1979
Schachtrote
1918
Schleife
1985
Schlitzbild, Schwarz-Rot (54/I)
1965
Schotter
Screaming Warbot
Season's Greeting Card
1963
Seek
Self portrait
1968
Self-Portrait
Semantische Infra- und Metastruktur
around 1967
Senster
1970
Serie grün
1974
Serigraph
undated
Shakespeare
1973
Shift
1970
Shot Kennedy No. 1
1967 / 68
Shot Kennedy No. 2
1967 / 68
Sieguebersonne
1912
Simulated Basilar Membrane Motion (3-D)
1966