First apparence of the trojan horse

[HPL]

What is the First work of literature to mention the famous Trojan Horse? I haven’t read Vigil or Homer, but I’ve heard that the Trojan Horse gets mentioned in the Aneiad, but that was written nearly 1000 years after Homer.

[Tusculan]

It is mentioned by Homer in the Odyssey, viii 493.

But come now, change thy theme, and sing of the building of the horse of wood, which Epeius made with Athena’s help, the horse which once Odysseus led up into the citadel as a thing of guile, [495] when he had filled it with the men who sacked Ilios.

link to Perseus Project
Robert Graves mentiones scores of other references.