Autograph manuscript of Percival's translation. Accompanied by fragment of a letter to "Dear Sir", New Haven, May 28, 1823. On verso of leaf 2 of his translation of Aeschylus' Prometheus Bound [q.v.]; and a letter to his mother, New Haven, June 16, 1823, on version of leaves 3-4 of his translation of Aeschylus' Prometheus Bound.