Photo, january 14th 1961 Yves Klein surrounded by Sponge Sculptures during the exhibition "Monochrome und Feuer", Museum Haus Lange
Photo, january 1961 Yves Klein with the work Ci-gît l'Espace [Here Lies Space] (RP 3) during the exhibition “Monochrome und Feuer”, Museum Haus Lange
Photo, 1961 View of the exhibition “Monochrome und Feuer” (MG 17, S 33, S 34, S 35), Museum Haus Lange