Contents:

1. Agamemnon, The Libation Bearers, The Furies, and Prometheus Bound, by Aeschylus
2. Oedipus the King and Antigone, by Sophocles
3. Hippolytus and The Bacchae, by Euripides
4. The Frogs, by Aristophanes

Also available:

The Complete Harvard Classics Collection (51 Volumes + The Harvard Classic Shelf Of Fiction)
50 Masterpieces You Have To Read Before You Die (Golden Deer Classics)