Bulgarian-born environmental artist (b.1935), famous for his works with his now deceased wife Jeanne-Claude and his own. Signed book "The Umbrellas" about the joint proyect for Japan and USA which led to an exhibition in June-July 1989. Published by the Guy Pieters Gallery, Belgium. Christo signs on the title page of this biligual (in English and Japanese) book full of pictures. Size is 9.75 x 9.75 inches, in excellent condition. Also included is a separate, 2-page printout that explains about the project.