The History of the Celtic People is a single volume which contains The Rise of the Celts and The Greatness and Decline of the Celts. They were originally published between 1920-70 as part of The History of Civilization which was a landmark in early twentieth century publishing. It was published at a formative time within the social sciences, and during a period of decisive historical discovery. The aim of the general editor, C.K. Ogden, was to summarize the most up-to-date findings and theories of historians, anthropologists, archaeologists and sociologists. The Rise of the Celts is a classic of ethnology which traces origins, history, influence of the Celts: migration into Europe and as far west as British Isles; treatment of Celtic languages and their relationship to other tongues; archaeological evidence from Iron Age settlement at Switzerland's La Tène, and other cultures; expansion of Celts.