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 Valmier Georges Valmier Georges Valmier (11 April 1885 – 25 March 1937) was a French painter. His work encompassed the great movements in the modern history of painting, starting with Impressionism in his early years, then Cubism which he discovered when he was around 25 years old, and finally Abstractionism from 1921. He also designed sets and costumes for theater and ballet, and models for fabrics, carpets, and other objects. His oil paintings do not exceed 300 in number, since Valmier died prematurely at the age of 51. His paintings were the culmination of many preparatory drafts in gouaches, multiple versions