Photo, 1959 Yves Klein, Iris Clert and Rotraut at the opening of the exhibition "Bas-reliefs in a sponge forest", Galerie Iris Clert
Photo, 1959 Portrait of Yves Klein in front of the Sponge Relief (RE 19) and the Sponge Sculpture (SE 260)
Photo, 1959 Rotraut and Elena Palumbo at the opening of the exhibition "Bas-reliefs in a sponge forest", Galerie Iris Clert
Photo, October 27th 1960 Meeting for the signature of the “Déclaration Constitutive du Nouveau Réalisme” in Yves Klein’s studio