Matthew Barney, HYPERTROPHY (incline), 1991. Light-reflective vinyl, graphite pencil, and petroleum jelly on paper in self-lubricating plastic frame, 10 1⁄2 x 11 1⁄2 x 1 1⁄4 inches. Collection of The Museum of Modern Art, New York, gift of R. L. B. Tobin. © Matthew Barney, Digital image © The Museum of Modern Art/Licensed by SCALA/Art Resource, NY.