Photo, 1957 Yves Klein in front of his Sponge Sculpture at the exhibition "Monochrome Propositions of Yves Klein" Gallery One, London
Photo, 1960 Yves Klein, Léonor Fini, Rotraut and Victor Brauner at the opening of the "Yves Klein le Monochrome" exhibition at the Galerie Rive Droite
Photo, january 14th 1961 Yves Klein surrounded by Sponge Sculptures during the exhibition "Monochrome und Feuer", Museum Haus Lange