Craig Kauffman, Le Mur s'en va (The wall goes away), Synthetic polymer on acrylic plastic, 185.4 x 120 x 22.9 centimeters, 1969, Art Institute of Chicago, Illinois
Jenny Holzer, Inflammatory Essays, One of twenty-nine offset lithographs on paper of various colors, Printed at Millner Bros., New York, Unlimited edition, 432 x 432 millimeters, 1979 - 82, Tate Gallery, U.K.