Document, 1958 Invitation card for the exhibition "Vitesse pure et stabilité monochrome" at galerie Iris Clert
Document, 1960 Invitation card for the performance "Anthropométries de l'Epoque Bleue", Galerie Internationale d'art contemporain
Document, 1961 Invitation card for the exhibition "Yves Klein Monochrome und Feuer" at the Museum Haus Lange in Krefeld