Photo, 1959 Inauguration of the Gelsenkirchen Opera Theater in the presence of Jean Tinguely and Yves Klein
Photo, 1959 International collaboration between artists and architects in the realisation of the new Gelsenkirchen Opera House
Photo, 1961 Yves Klein behind the "Wall of Fire" during the exhibition "Yves Klein Monochrome und Feuer" at the Museum Haus Lange