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.
With the Chalcidians, too, they renewed their ancient oaths, and swore new ones. The Argives also sent envoys to the Athenians bidding them evacuate the fortress at Epidaurus;[*](cf. 5.75.6.) and these, seeing that their contingent was small in comparison with the rest, sent Demosthenes to bring away their men. On his arrival he made a pretext of some gymnastic contest outside the fort, and when the rest of the garrison had gone out closed the gates behind them. Afterwards the Athenians renewed the treaty with the Epidaurians and of their own accord gave up the fortress.
After the withdrawal of the Argives from the alliance, the Mantineans also, although at first opposed to this course, afterwards, finding themselves unable to hold out without the Argives, likewise made an agreement with the Lacedaemonians and relinquished their sovereignty over the cities.[*](ie. over the Parrhasians and others in Arcadia; cf. ch. xxix. 1; xxxiii. 1; xii. 1.)
And now the Lacedaemonians and Argives, each a thousand strong, made a joint expedition, the Lacedaemonians first going alone and setting up a more oligarchical form of government in Sicyon, afterwards both together putting down the democracy at Argos and establishing an oligarchy favourable to the Lacedaemonians. These things occurred when the winter was closing and spring was now near at hand; and so ended the fourteenth year of the war.