Jean Metzinger see the cubist works in Room 7 and 8. While Pablo Picasso and Georges Braque are generally acknowledged as the founders of the twentieth-century movement that became known as Cubism, it was Jean Metzinger, together with Albert Gleizes, that created the first major treatise on the new art-form, "Du "Cubisme"", in preparation for the Salon de la Section d'Or held in October 1912. "Du "Cubisme"", published the same year by Eugène Figuière in Paris, represented the first theoretical interpretation, elucidation and justification of Cubism, and was endorsed by both Picasso and Braque. "Du "Cubisme"", which preceded Apollinaire's well known essays,
Georges Braque In 1962 Braque worked with master printmaker Aldo Crommelynck to create his series of etchings and aquatints titled "L’Ordre des Oiseaux" ("The Order of Birds"), which was accompanied by the poet Saint-John Perse's text. Braque died on 31 August 1963 in Paris. He is buried in the cemetery of the Church of St. Valery in Varengeville-sur-Mer, Normandy whose windows he designed. Braque's work is in most major museums throughout the world. Braque believed that an artist experienced beauty "… in terms of volume, of line, of mass, of weight, and through that beauty [he] interpret[s] [his] subjective impression...” He described