random objectivation
1963

random structured semiotic field work
1971

rasenstück
1989

sailboat
mid 1960s

silent singing
1994

stereopsis
1959

study
1955

temporary mural
1979

there

title unknown

title unknown
1972-73

title unknown
mid 1960s

title unknown
mid 1960s

title unknown
mid 1960s

title unknown
1970

two

untitled (1960)
1960

untitled (1960-1962)
1960-1962

untitled (Cohen, Harold)

untitled (Cohen, Harold, 1986)
1986

untitled (Konstruktion)
ca. 1950

untitled (Leonardo 2)
1968

untitled (ca. 1960-1962)

untitled (sine curve 1)
ca. 1969

untitled (sine curve 2)
ca. 1969

untitled (sine curve 3)
ca. 1969

untitled (sine curve 4)
ca. 1969

untitled
1975

mid 1960s