Document, 1955 Letter from Yves Klein to Jacques Tournier, author of the weekly "Les Nouvelles littéraires, artistiques et scientifiques".
Document, 1956 Poster of the exhibition "Yves Propositions Monochromes", Galerie Colette Allendy, Paris,
Exhibition, 21 Feb 1956 - 7 Mar 1956 Yves : Propositions monochromes Galerie Colette Allendy, Paris, France
Exhibition, 10 May 1957 - 25 May 1957 Yves Klein : Propositions monochromes Galerie Iris Clert, Paris, France
Exhibition, 31 May 1957 - 23 Jun 1957 Yves Propositions monochromes Galerie Schmela, Düsseldorf, Germany