Juan Gris, Breakfast, 1914 (cut and pasted papers, crayon, and oil on canvas, 31 7/8 x 23 1/2 inches; Museum of Modern Art, NYC). Clement Greenberg wrote that this collage succeeds better than Gris' more "decorative" collages, because it obviously depicts a still life: "with one's eyes focused primaraly on the flat surface pattern, one finds the picture disorganized and congested, but when one shifts focus and views it as a conventional picture, it springs instantly into perfection."
Pablo Picasso, Verre et bouteille de Suze (glass and bottle of Suze), 1912. Collage with charcoal and gouache, 64 x 50 cm. (Along with the label and strips of wallpaper from his studio, are newspaper reports of the Balkan war, and an account of an anarchist/socialist anti-war demonstration. Picasso said later it was "my way of showing I was against the war.")