Date from handwritten note on verso, in French. Note also indicates title of work and location "dans les jardins du Musee de Krefeld" i.e. the Museum Haus Lange in Krefeld, Germany, which hosted the retrospective <em>Yves Klein: Monochrome und Feuer (Yves Klein Monochrome and Fire)</em>.
Yves Klein with his work <em>Mur de feu (wall of fire)</em>, January 1961 / unidentified photographer. Rudi Blesh papers, 1909-1983. Archives of American Art, Smithsonian Institution.
Current copyright status is undetermined
Archives of American Art, Smithsonian Institution Washington, D.C. 20560