From one of our most accomplished and widely admired historians--a revelatory portrait of Benjamin Franklin's youngest sister, Jane, whose obscurity and poverty were matched only by her brother's fame and wealth but who, like him, was a passionate reader, a gifted writer, and an astonishingly shrewd political commentator. Making use of an astonishing cache of little-studied material, including documents, objects, and portraits only just discovered, Jill Lepore brings Jane Franklin to life in a way that illuminates not only this one extraordinary woman but an entire world.