Andy Warhol, "Grace Jones," 1984. Polacolor ER, 4 1/4 x 3 3/8 inches. Collection of the Nasher Museum of Art at Duke University. Gift of the Andy Warhol Foundation for the Visual Arts. © 2009 The Andy Warhol Foundation for the Visual Arts / Artists Rights...

Pablo Picasso, First Steps, Paris, May 21, 1943, revised summer 1943. Oil on canvas, 51 ¼ x 38 ¼ in. (130.2 x 97.1 cm). Yale University Art Gallery, Gift of Stephen Carlton Clark, B.A. 1903. © 2008 Estate of Pablo Picasso/Artists Rights Society (ARS),...