Article, 1961, Roland F. Pease Jr. Testimonial of Roland F. Pease Jr. on the blue monochromes seen at the Leo Castelli exhibition, 1961
Document, 1958 Yves Klein, Report on the exhibition "Pure Speed and Monochrome Stability" at Iris Clert, in collaboration with Jean Tinguely
Document, 1958 Invitation card for the exhibition "Vitesse pure et stabilité monochrome" at galerie Iris Clert