A History of Sparta by W.G. Forrest
This introductory history of Sparta gives readers an accessible overview of the intense and brilliant history of the great Greek city state. It covers the gradual expansion of Sparta's authority in the Peloponnese, her leadership of the Greeks against the Persians, the rivalry with Athens, her short period of complete supremacy in Greece until 371, and the collapse which followed down to the Roman conquest.