Four Sided Pyramid by Sol Lewitt in the National G… Chair Transformation Number 20B by Samaras in the… Chair Transformation Number 20B by Samaras in the… Chair Transformation Number 20B by Samaras in the… House I by Roy Lichtenstein in the National Galler… Thinker on a Rock by Barry Flanagan in the Nationa… Thinker on a Rock by Barry Flanagan in the Nationa… House I by Roy Lichtenstein in the National Galler… House I by Roy Lichtenstein in the National Galler… Detail of the Thinker on a Rock by Barry Flanagan… House I by Roy Lichtenstein in the National Galler… Road in the Woods by Sisley in the National Galler… Spider by Louise Bourgeois in the National Gallery… Spider by Louise Bourgeois in the National Gallery… Spider by Louise Bourgeois in the National Gallery… Four-Sided Pyramid by Sol Lewitt in the National G… Spider by Louise Bourgeois in the National Gallery… Typewriter Eraser Scale X by Oldenburg and Van Bru… Typewriter Eraser Scale X by Oldenburg and Van Bru… Typewriter Eraser Scale X by Oldenburg and Van Bru… Aurora by Di Suvero in the National Gallery Sculpt… Aurora by Di Suvero in the National Gallery Sculpt… Stele II by Ellsworth Kelly in the National Galler… Cubi XXVI by David Smith in the National Gallery S… Cubi XXVI by David Smith in the National Gallery S… Detail of the Entrance to the Paris Metropolitain… Entrance to the Paris Metropolitain by Guimard in… Personnage Gothique, Oiseau-Eclair by Miro in the… Entrance to the Paris Metropolitain by Guimard in… Personnage Gothique, Oiseau-Eclair by Miro in the… Detail of the Entrance to the Paris Metropolitain… Entrance to the Paris Metropolitain by Guimard in… Cakes by Wayne Thiebaud in the National Gallery, S… Entrance to the Paris Metropolitain by Guimard in… Fountain in the National Gallery Sculpture Garden,… Fountain in the National Gallery Sculpture Garden,… Detail of Cakes by Wayne Thiebaud in the National… Detail of Cakes by Wayne Thiebaud in the National… Look Mickey by Roy Lichtenstein in the National Ga… Glass Case with Pies by Oldenburg in the National… Detail of Cakes by Wayne Thiebaud in the National… Green Marilyn by Andy Warhol in the National Galle… Target by Jasper Johns in the National Gallery, Se… Cape Cod Evening by Hopper in the National Gallery… Detail of Look Mickey by Roy Lichtenstein in the N… Green Marilyn by Andy Warhol in the National Galle… A Boy for Meg by Andy Warhol National Gallery Sept… Detail of Cape Cod Evening by Hopper in the Nation… Detail of Cape Cod Evening by Hopper in the Nation… Cape Cod Evening by Hopper in the National Gallery… Blue Morning by George Bellows in the National Gal… Margaret Strong by Frank Weston Benson in the Nati… Detail of Both Members of this Club by Bellows in… Both Members of this Club by Bellows in the Nation… The Lone Tenement by Bellows in the National Galle… New York by George Bellows in the National Gallery… A Friendly Call by William Merritt Chase in the Na… Detail of Salem Cove by Maurice Prendergast in the… Salem Cove by Maurice Prendergast in the National… Oyster Sloop, Cos Cob by Childe Hassam in the Nati… Detail of Oyster Sloop, Cos Cob by Childe Hassam i… Detail of Roadside Cottage by Bunker in the Nation… Poppies, Isles of Sholes by Childe Hassam in the N… Allies Day: May 1917 by Childe Hassam in the Natio… Baby at Play by Thomas Eakins in the National Gall… Repose by Sargent in the National Gallery, Septemb… Detail of The Biglin Brothers Racing by Thomas Eak… The Biglin Brothers Racing by Thomas Eakins in the… Roadside Cottage by Bunker in the National Gallery… Detail of Repose by Sargent in the National Galler… Detail of The Brown Family by Eastman Johnson in t… Detail of Repose by Sargent in the National Galler… Detail of Street in Venice by John Singer Sargent… Street in Venice by John Singer Sargent in the Nat…