Photo, 1949 Christmas evening at Hans Hartung's with Yves Klein standing on the right, surrounded by Colette and Pierre Soulages
Photo, 1961 Pierre Restany during the exhibition "Yves Klein the Monochrome: il nuovo realismo del colore", Galleria Apollinaire
Exhibition, 20 Nov 1961 - 30 Nov 1960 Yves Klein le monochrome: il nuovo realismo del colore Galleria Apollinaire, Milan, Italy