Over the past half century The Cambridge Ancient History has established itself as a definitive work of reference. The original edition was published in twelve text volumes between 1924 and 1939. Publication of the new edition began in 1970. Every volume of the old edition has been totally re-thought and re-written with new text, maps, illustrations and bibliographies. Some volumes have had to be expanded into two or more parts and the series has been extended by two extra volumes (XIII and XIV) to cover events up to AD 600, bringing the total number of volumes in the set to fourteen. Existing plates to the volumes are available separately.