|←Author Index: Eu||Pope Eugene II
|Pope from May 11 824, to August 27 827.|
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- “Popes Eugene I-IV,” in Catholic Encyclopedia, 1913.
- “Eugenius/Eugenius II” in Encyclopædia Britannica, (11th ed.), 1911.
Works by this author published before January 1, 1923 are in the public domain worldwide because the author died at least 100 years ago. Translations or editions published later may be copyrighted. Posthumous works may be copyrighted based on how long they have been published in certain countries and areas.