Paul Kos, The Sound of Ice Melting, Two 25-pound blocks of ice, eight standing boom microphones, amplifier, and speaker, Dimensions variable, 1970, San Francisco Museum of Modern Art, California
Claes Oldenburg and Coosje van Bruggen, Big Sweep, Aluminum, stainless steel, polyurethane resin painted with acrylic polyurethane, 376 x 304 x 181 inches, 2006, Denver Art Museum, Colorado