The map of a city is a palimpsest of its history. In Cairo, people, places, events, and even dates have lent their names to streets, squares, and bridges, only for those names often to be replaced, and then replaced again, and even again, as the city and the country imagine and reimagine their past. The resident, wandering boulevards and cul-de-sacs, finds signs; the reader, perusing novels and histories, finds references. Who were ʿAbd el-Khaleq...