Document, 1957 Invitation card for the double exhibition "Yves Klein: Propositions monochromes" at the Iris Clert and Colette Allendy Galleries
Exhibition, 15 Jun 1959 - 30 Jun 1959 Bas-reliefs dans une forêt d'éponges Galerie Iris Clert, Paris, France
Article, 1961, Roland F. Pease Jr. Testimonial of Roland F. Pease Jr. on the blue monochromes seen at the Leo Castelli exhibition, 1961