Bullfinch, Thomas. Bullfinch's Mythology, Avenel, 1979.

One of the best—if a bit old fashioned—collections of information on classical mythology, as well as on Arthurian legend and many other myths and legends.

Fitts, Dudley, editor. Greek Plays in Modern Translation, Dial, 1947.

Contains a selection of Greek plays, including King Oedipus translated by William Butler Yeats, and Prometheus Bound. It closes with insightful, though brief, comments on the various plays.

Havelock, E. A. The Crucifixion of Intellectual Man, Beacon, 1951.

Breezy discussion of Aeschylus's tragedy, though concluding with a particularly useful appendix on Hesiod's :Theogony, Aeschylus's mythology, and the lost plays of the Prometheus cycle.

Herington, John. Aeschylus, Yale University Press, 1986.

This offers substantial background on Aeschylus's worldview, his historical moment, and Greek theatrical conventions, as well as a chapter on each of the existing plays, including one on Prometheus Bound.

Hogan, James C. A Commentary on the...