Photo, 1961 Pierre Restany during the exhibition "Yves Klein the Monochrome: il nuovo realismo del colore", Galleria Apollinaire
Photo, 1961 Yves Klein at the opening of the exhibition "Concetti spaziali" by Lucio Fontana at Galerie Iris Clert
Photo, january 14th 1961 Yves Klein surrounded by Sponge Sculptures during the exhibition "Monochrome und Feuer", Museum Haus Lange