I like a traveling circus. The American Historical Association’s annual conference periodically sets up its tent at the New York Hilton. Since I live nearby, I subject myself to its clown car of characters every half decade. But this year, I saw the confab’s book fair as an opportunity to introduce myself to the editors of several university presses, peruse forthcoming titles, and gauge the attendees’ interest in the latest offerings. On a cold Saturday morning in January, I limped one block to the nearest subway stop to ride to the big top.