Edward Gibbon, The Decline and Fall of the Roman Empire, ed. J.B. Bury (New York: Heritage, 1946), vol. 2, pp. 57–58. See also Edward A. Parsons, The Alexandrian Library, Glory of the Hellenistic World: Its Rise, Antiquities, and Destructions (London: Cleaver-Hume, 1952), pp. 274, 286–319.