The epistle of Aristeas.

Counted among the pseudepigrapha.

Attributed author(s).
Aristeas.

Text(s) available.
Online Critical Pseudepigrapha.
Skeptik (Greek only).
CCEL: Letter of Aristeas (English only).
Wesley Noncanonical: Letter of Aristeas (English only).
Pseudepigrapha: Letter of Aristeas (English only).

Useful links.
Letter of Aristeas in the Jewish Encyclopedia.
Letter of Aristeas in the Catholic Encyclopedia.
Letter of Aristeas at Early Jewish Writings.

The epistle of Aristeas is counted as one of the pseudepigrapha. It is famous for describing the translation of the Hebrew scriptures into Greek by seventy-two translators, yielding the Septuagint, or LXX.