© Artists Rights Society (ARS), New York/VG Bild-Kunst, Bonn Photo by Joshua White/JWPictures.com Difesa della natura (Clavicembalo) Joseph Beuys Accession Date: 05/01/06 Accession Number: F-BEUYS-106.381 1981 silkscreen on machine-made wove 39 1/8 x 26 5/8 in. (99.38 x 67.63 cm)