Julio González (Catalonia 1876-1942), Tête couchée, petite; bronze, 1934. By the 1930s González began to make sculpture with iron. Then, few artists forged or welded metal as art, working instead with a foundry and technicians to cast works in bronze. In working with iron González utilized skills from his youth, having had a long and specialized apprenticeship in his family’s metal shop. David Smith called González "the father of all iron sculpture of this century". Centre Pompidou, Paris.