Article, 1961, Roland F. Pease Jr. Testimonial of Roland F. Pease Jr. on the blue monochromes seen at the Leo Castelli exhibition, 1961
Photo, 1959 Yves Klein at the opening of his exhibition "Bas-reliefs in a sponge forest", Galerie Iris Clert
Photo, ca. 1960 Yves Klein and Rotraut with Ci-gît l'Espace [Here Lies Space] (RP 3) and the Sponge Relief (RE 20)
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