This exceptional study of the Mongo people of the upper Congo River basin focuses on the evolution of Mongo work patterns from the period of the late nineteenth century to 1940, the high-water mark of the colonial period. It brings new evidence from oral histories, anthropological research, and archival records to build on or to correct colonial ethnographic accounts. From this fresh vantage point, Nelson reassesses colonial labor policies and relates them to today’s rural poverty and underdevelopment.