Artwork, 1959 Receipt to Jacques Kugel for transfert of a Zone of Immaterial Pictorial Sensibility. Series n°1, Zone n°02
Artwork, 1959 Receipt to Peppino Palazzoli for transfert of a Zone of Immaterial Pictorial Sensibility. Series n°1, Zone n°01
Document, 1955 Text for the exhibition "Yves Peintures" at the Club des Solitaires of Editions Lacoste, Paris
Document, 1955 Letter from Yves Klein to Jacques Tournier, author of the weekly "Les Nouvelles littéraires, artistiques et scientifiques".