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Slide 6557

Richard Serra, Equal Elevations On and In to Kathy and Keith, 1988, Corten Steel, 10 feet 6 inches by 20 feet 8 inches. Promised gift of Keith L. and Katherine Sachs. © 2014 Richard Serra / Artists Rights Society (ARS), New York

Slide 6558

Joseph Beuys, Erdtelephon (Earth Telephone), 1968-71, telephone, earth, straw, glass, wood, 7 7/8 by 30 by 19 1/4 inches. Gift of Keith L. and Katherine Sachs, 2013. © Joseph Beuys / Artists Rights Society (ARS), New York