Black Cargoes, History of the Atlantic Slave Trade by Daniel P. Mannix in collaboration with Malcolm Cowley. ISBN 0 1400 4253 9. Covers the four hundred year history of Europeans purchasing people in Africa and transporting them to North and South America. Well written and refers in many places to historical documents. Has several pages of drawings depicting conditions on the ships, etc. The sad thing is that in many places in the world slavery is still allowed, e.g., in Haiti (a former French colony that was freed by slave revolt) people still sell their children into slavery. (See Restavec.)