Article, 1961, Roland F. Pease Jr. Testimonial of Roland F. Pease Jr. on the blue monochromes seen at the Leo Castelli exhibition, 1961
Photo, 1960 Meeting for the signing of the "Déclaration Constitutive du Nouveau Réalisme" in Yves Klein's studio
Photo, 1957 Yves Klein during his exhibition "Yves Klein : Proposte monocrome, epoca blu", Galleria Apollinaire
Photo, January 1957 Yves Klein making a Judo catch during his exhibition "Yves Klein: Proposte monocrome, epoca blu", Galleria Apollinaire
Photo, 1957 View of the exhibition "Yves Klein : Proposte monocrome, epoca blu", Galleria Apollinaire
Photo, 1959 International collaboration between artists and architects in the realisation of the new Gelsenkirchen Opera House