Among the Mande-speaking groups dispersed throughout much of West Africa, certain artists -- including potters and leatherworkers -- form a spiritually powerful social class in which gender determines craft specialization. Ceramic water jars and cooking pots are made by the wives and female relatives of blacksmiths. Leather objects such as knife sheaths, amulet cases, and, more recently, western-style shoes and bags are produced by male leatherworkers...