The 3 volume set maps how Chillida's use of materials and technique varies, chronicling the artist's sculpting career started with iron and steel, then timber, marble, alabaster, concrete, and terracotta between 1950's and 1970's. The name Chillida is generally connected with heavy, massive monumental sculptures but these books reveal he produced some very different work. Each graphic work is catalogued with title, date, number produced, production method, size, and type of paper.