fragment 1
C.I.G. Ital. et Sic. 1292. ii. 11
... the Story of Oedipous by Kinaethon in six thousand six hundred verses.
fragment 2
Pausanius ix. 5.10
Judging by Homer I do not believe that Oedipous had children by Iokasta; his sons were born of Euryganeia as the writer of the Epic called the Story of Oedipous clearly shows.
fragment 3
Schol. on Eur. Phoen., 1750
The authors of the Story of Oedipous (say) of the Sphinx: "But furthermore (she killed) noble Haemon, the dear son of blameless Kreon, the comeliest and loveliest of boys."