Thucydides' History of the Peloponnesian War is widely considered to be the definitive ancient treatment of the period it covers. The work summarizes events from the years leading up to the war (the Pentecontaetia) and gives an in-depth treatment from the late 430s BC to 411 BC, where it ends in midsentence.
77244History of the Peloponnesian WarRichard CrawleyThucydides
