History of the Peloponnesian War
Thucydides
Thucydides, Vol. 1-4. Smith, Charles Foster, translator. London and Cambridge, MA: Heinemann and Harvard University Press, 1919-1923.
“For the Lacedaemonians the following persons took the oath: Pleistoanax, Agis, Pleistolas, Damagetus, Chionis, Metagenes, Acanthus, Daïthus, Ischagoras, Philocharidas, Zeuxidas, Antippus, Alcinadas, Tellis, Empedias, Menas, Laphilus; for the Athenians, Lampon, Isthmionicus, Laches, Nicias, Euthydemus, Procles, Pythodorus, Hagnon, Myrtilus, Thrasycles, Theagenes, Aristocrates, Iolcius, Timocrates, Leon, Lamachus, Demosthenes.” This alliance was made not long after the treaty, and the Athenians restored to the Lacedaemonians the captives taken on the island;
and thus began the summer of the eleventh year. During these ten years the first war, of which the history has now been written, was waged continuously.
After the treaty and the alliance between the Lacedaemonians and Athenians, which were concluded at the end of the ten years' war, in the ephorate of Pleistolas at Lacedaemon and the archonship of Alcaeus at Athens, those who accepted these were at peace; but the Corinthians and some of the cities in the Peloponnesus attempted to disturb the agreements, and at once other trouble also began between Lacedaemon and her allies.