1911 Encyclopædia Britannica/Hypatia

publication now in the public domain: Chisholm, Hugh, ed. (1911). "Synesius". Encyclopædia Britannica. Vol. 26 (11th ed.). Cambridge University Press. p. 294

Robert Appleton Company. Chisholm, Hugh, ed. (1911). "Cyril (bishop of Alexandria)". Encyclopædia Britannica. 7. (11th ed.). Cambridge University Press.

now in the public domain: Chisholm, Hugh, ed. (1911). "Isidore of Alexandria". Encyclopædia Britannica. Vol. 14 (11th ed.). Cambridge University Press

"Catharine" . New International Encyclopedia. 1905. "Catherine, Saint" . Encyclopædia Britannica (11th ed.). 1911. Colonnade Statue St Peter's Square

related to Socrates Scholasticus. Wikisource has the text of a 1911 Encyclopædia Britannica article about Socrates of Constantinople.  Greek Wikisource has