For more than fifty years, Phineas T. Barnum embodied all that was grand and fraudulent in American mass culture. Over the course of a life that spanned the nineteenth century (1810-91), he inflicted himself upon a surprisingly willing public in a variety of guises, from newspaper editor (or libeler) to traveling showman (or charlatan) and distinguished public benefactor (or shameless hypocrite). Barnum deliberately cultivated his ambiguous...