Photo, 1949 Christmas evening at Hans Hartung's with Yves Klein standing on the right, surrounded by Colette and Pierre Soulages
Photo, 1961 Yves Klein and Rotraut Uecker at the opening of the exhibition “Monochrome und Feuer”, Museum Haus Lange
Photo, 1961 Yves Klein behind the "Wall of Fire" during the exhibition "Yves Klein Monochrome und Feuer" at the Museum Haus Lange
Photo, 1961 Pierre Restany during the exhibition "Yves Klein the Monochrome: il nuovo realismo del colore", Galleria Apollinaire
Photo, 1961 Yves Klein and Paul Wember at the opening of the exhibition "Yves Klein Monochrome und Feuer" at the Museum Haus Lange