Film, 1959 Yves Klein's exhibition : Bas-reliefs dans une forêt d'éponges [Bas-reliefs in a forest of sponges], 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