Sketch, material collage for "MACHINE DREAM", pencil, aniline ink, polyethylene, hot glue, 44×30 cm Sketch, material collage for "MACHINE DREAM", pencil, aniline ink, polyethylene, hot glue, 44×30 cm Sketch for "MACHINE DREAM", 1983, pencil, ink, ballpoint pen, 44×30 cm Sketch for "MACHINE DREAM" 1983, pencil, ink, 44×30 cm Sketch for "MACHINE DREAM" 1983, pencil, ink, 44×30 cm Sketch for "MACHINE DREAM" 1983, pencil, ink, 44×30 cm Sketch for "MACHINE DREAM" 1983, pencil, ink, 44×30 cm Sketch for "MACHINE DREAM" 1983, pencil, ink, 44×30 cm Sketch for "MACHINE DREAM" 1983, pencil, ink, 44×30 cm Sketch for "MACHINE DREAM" 1983, pencil, ink, 44×30 cm Sketch for "MACHINE DREAM", 1983, ink and pen, 44×30 cm Sketch for "MACHINE DREAM", 1983, ink and pen, 44×30 cm Sketch for "MACHINE DREAM" 1983, pencil, ink, 44×30 cm Sketch for "MACHINE DREAM", 1983, pencil, 44×30 cm Sketch/collage for "MACHINE DREAM", 1983, aniline ink, pencil, collage, 44×30 cm Machine dream in the gallery Kulmerstrasse MACHINE DREAM, 1983, tires, compressor, skull, polyethylene, electro-kinetic, 300×200 cm