French artist of German birth. He was trained at the Kunstgewerbeschule in Strasbourg, the Kunstschule in Weimar and the Académie Julian in Paris. He collaborated with the expressionist groups der Blaue Reiter and der Sturm and was involved with Dadaism from its inception. He worked in a number of mediums - painting, collage, sculpture, etc. – often producing abstract compositions or biomorphic shapes. Arp was one of the five artists invited to produce pieces for the UNESCO headquarters. He produced a bronze relief (“Constellation”) for the end wall of the library.