Oresteia : Agamemnon ; The libation bearers ; the Eumenides

First presented in the spring of 458 B.C.E. at the festival of Dionysus in Athens, Aeschylus' trilogy Oresteia won the first prize. Comprising three plays—Agamemnon, Libation Bearers, and The Furies—it is the only surviving example of the ancient trilogy form for Greek tragedies.--Publisher's description.