When was the Spanish painter and sculptor died who's works were published by Cahiers d'Art?
Cahiers d'art: Cahiers d'Art is a French artistic and literary journal founded in 1926 by Christian Zervos. Cahiers d'art:  Publications include the definitive catalogue of works by Pablo Picasso, "Pablo Picasso par Christian Zervos", in 33 volumes, with over 16,000 images. Pablo Picasso: Pablo Picasso ( ; ] ; 25 October 1881 – 8 April 1973) was a Spanish painter, sculptor, printmaker, ceramicist, stage designer, poet and playwright who spent most of his adult life in France.
8 April 1973