Photo, 1957 Yves Klein in front of his Sponge Sculpture at the exhibition "Monochrome Propositions of Yves Klein" Gallery One, London
Photo, 1957 View of Yves Klein's "Aerostatic Sculpture" during his exhibition "Yves Klein: Propositions Monochromes", Galerie Iris Clert
Film, 1959 Yves Klein's exhibition : Bas-reliefs dans une forêt d'éponges [Bas-reliefs in a forest of sponges], galerie Iris Clert, Paris, France