The American Gas Works, 1961–62. Photo: Courtesy of Museum Ludwig, Cologne, Germany; Artwork: © Morgan Art Foundation Ltd./Artists Rights Society (ARS), NY
Robert Indiana: The American Painter of Signs was an exhibition of paintings, sculpture, and prints. It included early works such as Mate (1960–62), Zig (1960–62), and The American Gas Works (1961–62), and more recent works such as Four Star (1993), The X-7 (1998), and The 6666, The American Dream (2002).