Exhibition at Galerie Gimpel & Hanover in Zürich in 1971. Tages-Anzeiger October 15, 1971.
Gimpel & Hanover Galerie was a historical art-driven gallery in Zürich. It was founded in the late 1960s through a collaboration between the London galleries Gimpel Fils and Hanover Gallery. They exhibited international contemporary art and sculpture, including renowned artists such as Louise Nevelson, Isamu Noguchi, and Raffael Benazzi, and of course Sivert.