Claes Oldenburg, Proposal for a Skyscraper in the Form of a Chicago Fireplug, 1968. Wax crayon, watercolor and graphite pencil on paper, 13 11/16 × 11 1/16in. (34.8 × 28.1 cm). Whitney Museum of American Art, New York; gift of The American Contemporary Art Foundation, Inc., Leonard A. Lauder, President 2002.50. © Claes Oldenburg