pIn 1994, when the National Air and Space Museum announced plans to display the emEnola Gayem, the B-29 sent to destroy Hiroshima with an atomic bomb, the ensuing political uproar caught the museum's parent Smithsonian Institution entirely unprepared. As the largest such complex in the world, the Smithsonian cares for millions of objects and has displayed everything from George Washington's sword to moon rocks to Dorothy's ruby slippers from The Wizard of Oz. Why did this particular object arouse such controversy From an insider's perspective, Robert C. Post's emWho Owns America's Pastem offers insight into the politics of display and the interpretation of history.ppNever before has a book about the Smithsonian detailed the recent and dramatic shift from collection-driven shows, with artifacts meant to speak for themselves, to concept-driven exhibitions, in which objects aim to tell a story, displayed like illustrations in a book. Even more recently, the trend is to show artifacts alon