An Afghan instructor explained the concept of collage in Dari.
From his graffiti, Snow evolved into Dada-like collage and photography.
Hartigan based it on a collage of Life magazine snippets that included ads for toothpaste and food shots.
1919, from French collage "a pasting," from Old French coller "to glue," from Greek kolla "glue." Earliest reference is in Wyndham Lewis.