The life of Apollonius of Tyana, the Epistles of Apollonius and the Treatise of Eusebius; with an English translation by F.C. Conybeare
Philostratus, the Athenian, 2nd/3rd cent; Eusebius, of Caesarea, Bishop of Caesarea, ca. 260-ca. 340; Conybeare, F. C. (Frederick Cornwallis), 1856-1924