Paris is, unsurprisingly, evident everywhere, even in unexpected places. Georgia O'Keeffe's Wave, Night (1928), a dreamy, semi-abstract seascape, could, for instance, be an unfinished painting by Henri Rousseau, one in which the foreground has yet to be painted in. But even before you encounter the triumph of abstract expressionism, you'll see a shift: in Stuart Davis's Red Cart (1932) one immediately thinks of the British artist Patrick Caulfield's Pop Art canvases.