Nicene and Post-Nicene Fathers, Ser. II, Vol. III:
Life and Works of Rufinus with Jerome's Apology Against Rufinus.: Pamphilus the Martyr and his Library.

18. Lastly, take the following from another letter to Marcella:

“The blessed Martyr Pamphilus, whose life Eusebius the Bishop of Cæsarea set forth in some three volumes, wished to rival Demetrius Phalereus and Pisistratus, in his zeal to establish a library of sacred books: he sought out all through the world representative works of great minds, which are their true and everlasting monuments; but most of all he acquired at great expense all the books written by Origen, and gave them to the church at Cæsarea. This library was afterwards partly destroyed; but Acatius and later on Euzoius, Bishops of that church, endeavoured to reestablish it in parchment volumes. The last of these recovered a great many works, and left us an inventory of them, but he shews that he could not find the Commentary on the hundred and twenty-sixth Psalm and the Tract on the Hebrew letter Pe, by the fact that he does not mention it. Not that so great a man as Adamantius passed over anything, but that, through the negligence of his successors it did not remain to times within our memory.”