Document, 1955 Letter from Yves Klein to Jacques Tournier, author of the weekly "Les Nouvelles littéraires, artistiques et scientifiques".
Photo, 1957 View of Yves Klein's "Aerostatic Sculpture" during his exhibition "Yves Klein: Propositions Monochromes", Galerie Iris Clert
Exhibition, 12 Apr 1957 - 8 May 1957 "Micro-Salon d'avril", Galerie Iris Clert, 1957 Galerie Iris Clert, Paris, France
Exhibition, 4 Aug 1956 - 31 Aug 1956 Festival de l'art d'avant-garde Cité Radieuse de Marseille, France, Marseille, France