1966
"Entwürfe für Weißegeister" (Studies for "White Light Ghosts") by Otto Piene are presented on one sheet of paper, using collaged paper elements glued to the paper support, and graphite.
Otto Piene, 1991
Otto Piene, 2005
Otto Piene
Otto Piene, 1978
Otto Piene, 1986
Otto Piene, 1987
Otto Piene, 1990
Otto Piene, 2012
Otto Piene, 1983
Otto Piene, 2002