Article, 1961, Roland F. Pease Jr. Testimonial of Roland F. Pease Jr. on the blue monochromes seen at the Leo Castelli exhibition, 1961
Document, 1959 Yves Klein, Text following the exhibition Motion in Vision / Vision in Motion, Hessenhuis
Exhibition, 14 Jan 1961 - 26 Feb 1961 Yves Klein Monochrome und Feuer Museum Haus Lange, Krefeld, Germany
Exhibition, 17 Nov 1958 - 30 Nov 1958 Vitesse pure et stabilité monochrome by Yves Klein and Jean Tinguely Galerie Iris Clert, Paris, France
Exhibition, 2 Jan 1957 - 12 Jan 1957 Yves Klein : Proposte monocrome, epoca blu Galleria Apollinaire, Milan, Italy