Euripides Phoenissae 1705-07:
Oidipous: To die in Athens while wandering.
Antigone: Where? Which Attic city shall receive you?
Oidipous: Holy Kolonos, the house of the horse-god (translated by Aaron J. Ivey)
Pausanias Description of Greece 1.28.7:
Within the precincts is a monument to Oedipus, whose bones, after diligent inquiry, I found were brought from Thebes. The account of the death of Oedipus in the drama of Sophocles I am prevented from believing by Homer, who says that after the death of Oedipus Mecisteus came to Thebes and took part in the funeral games (original Greek).
Homer Iliad 23.677-80:
Euryalos alone stood up against him, a man equal to the gods, the son of lord Mekisteus of Talas’ blood, who once came to Thebes to the tomb of fallen Oidipous. There he defeated all the Kadmeians (translated by Aaron J. Ivey).
 He also aided Adrastus in recovering for burial the bodies of those who had fallen before the walls of the Cadmeia, not by mastering the Thebans in battle, as Euripides has it in his tragedy, but by persuading them to a truce; for so most writers say, and Philochorus adds that this was the first truce ever made for recovering the bodies of those slain in battle,  although in the accounts of Heracles it is written that Heracles was the first to give back their dead to his enemies. And the graves of the greater part of those who fell before Thebes are shown at Eleutherae, and those of the commanders near Eleusis, and this last burial was a favour which Theseus showed to Adrastus. The account of Euripides in his Suppliants is disproved by that of Aeschylus in his ‘Eleusinians,’ where Theseus is made to relate the matter as above (original Greek).
Isokrates Panathenaicus 168-71:
 I could not, then, point out a greater service than this, rendered by our ancestors, nor one more generally beneficial to the Hellenes. But I shall, perhaps, be able to show one more particularly related to their conduct of war, and, at the same time, no less admirable and more manifest to all. For who does not himself know or has not heard from the tragic poets at the Dionysia of the misfortunes which befell Adrastus at Thebes,  how in his desire to restore to power the son of Oedipus, his own son-in-law, he lost a great number of his Argive soldiers in the battle and saw all of his captains slain, though saving his own life in dishonor, and, when he failed to obtain a truce and was unable to recover the bodies of his dead for burial, he came as a suppliant to Athens, while Theseus still ruled the city, and implored the Athenians not to suffer such men to be deprived of sepulture nor to allow ancient custom and immemorial law to be set at naught—that ordinance which all men respect without fail, not as having been instituted by our human nature, but as having been enjoined by the divine power?  When our people heard this plea, they let no time go by but at once dispatched ambassadors to Thebes to advise her people that they be more reverent in their deliberations regarding the recovery of the dead and that they render a decision which would be more lawful than that which they had previously made, and to hint to them also that the Athenians would not countenance their transgression of the common law of all Hellas.  Having heard this message, those who were then in authority at Thebes came to a decision which was in harmony neither with the opinion which some people have of them nor with their previous resolution; on the contrary, after both stating the case for themselves in reasonable terms and denouncing those who had invaded their country, they conceded to our city the recovery of the dead (original Greek).
Pindar Nemean Odes 9.22-24:
After fixing their sweet return on the banks of Ismenos, they fattened the white smoke with bodies. For seven pyres feasted upon young-limbed men (translated by Aaron J. Ivey).
Pausanias Description of Greece 9.9.5:
Some of the Thebans escaped with Laodamas immediately after their defeat; those who remained behind were besieged and taken. About this war an epic poem also was written called the Thebaid. This poem is mentioned by Callinus, who says that the author was Homer, and many good authorities agree with his judgment. With the exception of the Iliad and Odyssey I rate the Thebaid more highly than any other poem (original Greek).
Pausanias Description of Greece 1.39.2:
A little farther on from the well is a sanctuary of Metaneira, and after it are graves of those who went against Thebes. For Creon, who at that time ruled in Thebes as guardian of Laodamas the son of Eteocles, refused to allow the relatives to take up and bury their dead. But Adrastus having supplicated Theseus, the Athenians fought with the Boeotians, and Theseus being victorious in the fight carried the dead to the Eleusinian territory and buried them here. The Thebans, however, say that they voluntarily gave up the dead for burial and deny that they engaged in battle (original Greek).
Edited by Aaron J. Ivey, Graduate Teaching Assistant, Department of Classics, University of Georgia, July 2016.