© Artists Rights Society (ARS), New York/VG Bild-Kunst, Bonn Photo by Joshua White/JWPictures.com Die Wärmezeitmaschine (The Warmth-Time Machine) Joseph Beuys Accession Date: 05/01/06 Accession Number: F-BEUYS-106.160 1975 proof sheet for postcards 9 1/8 x 13 in. (23.18 x 33.02 cm)