JEANNE-CLAUDE CHRISTO (American 1935-2009) Hard hat from Japan project with piece of fabric from the Umbrella project Hard plastic, nylon and two books. Hat: 6 1/2 x 11 1/2 x 9 inches. The hard hat is signed on the left side above the Japanese writing, this lots includes two books "Christo Collection on Loan from the Rothschild Bank AG, Zurich" (which is signed in crayon on the title page) and "XTO+J-C A Biography" (unsigned). *Employ ee who worked on the Japan Project signed the hard hat on the inside with his contact information.