| |
| | [No title] |
 | | [The Syllabus of Errors was attached to this encyclical.] Sources: Acta Pii IX, I, 3:687-700; AAS, 3:160-67; Dublin Review, n.s., 4 (Apr 1865), 500-13 [Latin and English on opposite pages]. |
 | | "Pope Pius IX: political sections of the Syllabus errorum, December 8, 1864." In Church and State through the centuries (Westminster, Md., The Newman Press, 1954), p. |
 | | Woodlock, Thomas F. " 'Liberalism' and the Church; the Syllabus errorum jusrified." Momth, 161 June, 1936), 493-503. |
| web.mit.edu /dryfoo/Mason/Misc/Bulls/bull-001.864 (1000 words) |
|