Rotraut Uecker in the room dedicated to the "Immaterial Pictorial Sensibility" during the opening of the exhibition "Yves Klein Monochrome und Feuer" at the Museum Haus Lange, 14 janvier 1961
Rotraut Uecker in the room dedicated to the "Immaterial Pictorial Sensibility" during the opening of the exhibition "Yves Klein Monochrome und Feuer"