Memling Dawn, 1951
Untitled, 1954
Untitled, 1954 c.
The Paradoxical Absolute, 1958
Untitled, 1959
Etretat, 1960
Untitled, 1960
The Goodies, 1961
Clutching, 1962
Inner Ear, 1962
Labyrinthine Tower, 1962
Lair, 1962
Untitled, 1962 c.
Fée couturière, 1963
Stretched Drawing [5 x 5 grid], 1963
the diagonal of May 25, 1963 (to Constantin Brancusi), 1963
Stretched Drawing [2 x 2 grid], 1963 c.
Stretched Drawing [Square], 1963 c.
Amoeba, 1963–65
gold, pink and red, red, 1964
The Quartered One, 1964–65
La Patte, 1965
Untitled, 1965
Untitled, 1965–66 c.
Untitled, Delta, 1965–66 c.
JUNE 16, 1966, 1966
monument 4 for those who have been killed in ambush (to P.K. who reminded me about death), 1966
The Open Hand (variant), 1966
Untitled, 1966
untitled (to Katharina and Christoph), 1966–71
End of Softness, 1967
FEB. 14, 1967, 1967
Germinal, 1967
Scatter Piece, 1967
Unconscious Landscape, 1967–68
North, East, South, West, 1967/2002
5 ABR. 68, 1968
Gravel Mirrors with Cracks and Dust, 1968