Article, 1961, Roland F. Pease Jr. Testimonial of Roland F. Pease Jr. on the blue monochromes seen at the Leo Castelli exhibition, 1961
Exhibition, 11 Apr 1961 - 29 Apr 1961 Yves Klein le monochrome Leo Castelli Gallery, New York, United States
Exhibition, 29 May 1961 - 24 Jun 1961 Yves Klein le Monochrome Dwan Gallery - Los Angeles, Los Angeles, United States
Photo, 1961 Yves Klein at the opening of the exhibition "Concetti spaziali" by Lucio Fontana at Galerie Iris Clert
Photo, 1961 Yves Klein and Rotraut Uecker at the opening of the exhibition “Monochrome und Feuer”, Museum Haus Lange
Photo, 14 janvier 1961 Rotraut Uecker in the room dedicated to the "Immaterial Pictorial Sensibility" during the opening of the exhibition "Yves Klein Monochrome und Feuer" at the Museum Haus Lange