Document, 1964 Invitation card for the exhibition "Yves Klein Peintures de feu" at the Galerie Schmela, Düsseldorf
Document, 1957 Invitation card of the exhibition, "Yves Klein : Proposte monocrome, epoca blu", Galleria Apollinaire, 1957
Document, 1957 Invitation card for the double exhibition "Yves Klein: Propositions monochromes" at the Iris Clert and Colette Allendy Galleries