Apologeticus
Tertullian's defense of Christianity addressed to Roman authorities, cited for the testimony that the Septuagint was preserved in the Alexandrian library.
Preface and Praise of Sacred Scripture
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The Septuagint Translation and Greek Translators
— Tertullian cited: the Septuagint was preserved in the Alexandrian library down to his times
"Tertullian in his Apologeticus testifies that it was preserved there down to his own times."