Article, 1961, Roland F. Pease Jr. Testimonial of Roland F. Pease Jr. on the blue monochromes seen at the Leo Castelli exhibition, 1961
Photo, 1961 View of the exhibition “Monochrome und Feuer” (MG 17, S 33, S 34, S 35), Museum Haus Lange
Photo, janvier 1961 Yves Klein in front of the sculpture "Pluie Bleue [Blue Rain]" (S 36) during the exhibition "Yves Klein Monochrome und Feuer", Museum Haus Lange
Photo, 1961 Yves Klein and his sculpture Piège bleu pour lignes [Blue Trap for Lines] (S 14) during the exhibition "Yves Klein Monochrome und Feuer"
Document, 1957 Invitation card for the double exhibition "Yves Klein: Propositions monochromes" at the Iris Clert and Colette Allendy Galleries
Photo, January 1957 Yves Klein making a Judo catch during his exhibition "Yves Klein: Proposte monocrome, epoca blu", Galleria Apollinaire