I have never been particularly interested in slavery, perhaps because it is such an obvious fact of my family's history. The fact that I am descended from slaves is hard to acknowledge on a day-to-day basis, because slavery does not fit with my self-image. Perhaps this is because I am pretty certain I would not have survived it. In the manner of Calvino's Invisible Cities , Wendy Walters deftly explores the psyches of cities such as Chicago, Detroit, Manhattan, and Portsmouth. In...