Nathaniel Robert Walker is Associate Professor of Architectural History at the Catholic University of America and coeditor of Suffragette City: Women, Politics, and the Built Environment. Rachel Ama Asaa Engmann is an Associate Professor at the Africa Institute in Sharjah, United Arab Emirates, Director of the Christiansborg Archaeological Heritage Project in Ghana, and editor of Timbuktu Unbound: Islamic Texts, Textual Traditions, and Heritage in West Africa.