Working the diaspora : the impact of African labor on the Anglo American world 1650 1850 Material life in west and West Central Africa 1650 1800 : an introduction Seeds of change : African agricultural workers in the Anglo American colonies Cultivating knowledge : African tobacco and cotton workers in the Americas In an ocean of blue : West African indigo workers in the Atlantic world to 1800 Building Africans : black workers in colonial America and the antebellum south Natural worship : slavery the environment and black consciousness in the antebellum