pic top left: Thea Moeller
pic top right: Helmut Heiss (object: masonite, drywall, wood, 200 x 100 x 75cm)
pic mid left: Helmut Heiss (arc: concrete, gas tube, 200 x 180 x 180cm)
pic mid right: Thea Moeller
pic bott: Helmut Heiss