William Alan Fetter
untitled

Kurd Alsleben / Cord Passow
untitled
1960

William Alan Fetter
untitled

Anders Krogvig / Klaus Schröder
untitled

Otto Beckmann / Alfred Graßl
untitled
1969

Manuel Barbadillo
untitled

Manuel Barbadillo
untitled

Manuel Quejido
untitled

Miguel Angel Vidal
untitled

Bruno Sonderegger
untitled

R.D.E. Oxenaar
untitled

R.D.E. Oxenaar
untitled

Peter Struycken
untitled
1969

Zdeněk Sýkora
untitled

untitled
1970

Peter Henne
untitled

Ronald Resch
untitled

Edward E. Zajac
untitled
1963

Béla Julesz / Carol Bosche
untitled

Klaus-Dieter Graf / Georg Hansmann / Helga Illner / Bernhard Koerber / Bärbel Lieske
untitled

Klaus Thomas
untitled

Gottfried Jaeger
untitled
1967

Herbert W. Franke
untitled

Kenneth C. Knowlton
untitled

untitled

Josef Albers
unttilted01

Hiroshi Kawano
unttitle02
1974

Josef Albers
unttlited02

Max Bill
verdichtung zu caput mortuum

Herman de Vries
zufallszeichnungen
1972-74