O. Davies 
West Africa Before the Europeans [PDF ebook] 
Archaeology & Prehistory

This book covers the whole range of West African archaeology to the arrival of the Portugese on the Guinea coast. Parts of this territory are very ill-explored, and emphasis is accordingly laid on the better-known regions: Ghana, Nigeria, the middle Niger valley and Western Senegal. After introducing the geographical background and chronology, subsequent chapters deal with the Palaeolithic, Neolithic and early iron ages, ending with a brief account of the protohistoric period. Published in 1967. Includes map and topographical index.