There’s also a familiarity to the lesser-known works adorning the walls of "America’s Cool Modernism: O’Keeffe to Hopper." Not because British audiences have seen them before; they haven’t—nearly half of the eighty-odd paintings, photographs, and prints in this relatively small, three-room show have never previously been exhibited in the UK. All the same, we know exactly what we’re looking at: representations of the mythologies of an “America” that has long inhabited the popular global imagination, from the towering structures of the archetypal modern metropolis to the rustic barns, uniform fields of corn, and white picket fences of prairie farmland.