A collages author is someone who creates ART by assembling various materials such as paper, fabric, photographs, and other objects. The two most famous collages authors are ART, which stands for the French artist Jean Arp, and NIN, which stands for the German artist Hannah Höch. Jean Arp was a sculptor, painter, and poet who was associated with the Dada movement in the early 20th century. Hannah Höch was a pioneering figure in the Berlin Dada movement and is best known for her photomontages.