Church History by Eusebius Pamphilius
On Bk. III. chap. 3, § 5 (note 17, continued).
Since this note was in type Dr. Gardiner's admirable and exhaustive essay on the authorship of the Epistle to the Hebrews (in the Nicene and Post-Nicene Fathers, First Series, Vol. XIV. p.341 sq.) has come to hand, and I have been much pleased to see that the theory that Barnabas wrote the epistle is accepted and defended with vigor.