The OT of the most ancient surviving Christian Bible manuscripts - Codex Vaticanus (4th century), Codex Sinaiticus (4th century) and Codex Alexandrinus (5th century) - are Greek Septuagint text.

The Bible approved by Cushing contains a translation of the Apocrypha—the 15 Old Testament books found in the Greek Septuagint but not in the Hebrew Bible, twelve of them accepted by Catholics ...