I lived for a decade in Chicago, where I could only walk in the Midway Plaisance—a wide boulevard with a fat-bellied, grassy middle—in Hyde Park. The 1893 World’s Columbian Exhibition was held in Hyde Park and the Plaisance was a covered walk with concessions and private entertainment decked around it: markets from Algeria and Tunis, an ‘Indian’ village, an Oriental (Chinese) village and theatre, an Indian bazaar, a Moorish palace, a street in Cairo. The official guidebook told the white ‘walkers’ that they should expect to bump into an ‘Indian’ family making their bread or a Pathan sepoy waxing his moustache. Franz Boas, later to lead Columbia’s anthropology department, was the main force behind the 1893 Chicago Fair and had been hired by Frederic Putnam, then director of Harvard University’s Peabody Museum.