Church History (Patristic Era, Ecumenical Councils, the Papacy, and Saints): Web

Multilingual portal to a wide variety of papal and curial documents, statements and information, in a variety of languages.

A nice variety of links and good information compiled and maintained by Fr. Felix Just, S.J.

Includes documents going back to Pope Leo XIII. Warning: a few "broken" links that don't work.

Elizabeth Knuth (College of St. Benedict/St. John's University, MN) maintains this expert list, with a lot of good information.

Specifically Catholic commentaries on books of the Bible. Part of the larger Biblia Clerus resource.

Full texts of the Pre-Nicene, Nicene and Post-Nicene Fathers

These English translations are all out of copyright, but were not included in the 38 volume collection of Ante-Nicene, Nicene and Post-Nicene Fathers. These are all in the public domain. The texts are listed in chronological order.

Collection of 13 ancient codices containing over 50 texts discovered in upper Egypt in 1945. The texts provide insight into early Christianity in general and Gnosticism in particular.

Extensive list of primary source documents on issues relating to the interaction of religion and politics, categorized by era from ancient times to the present.

Maintained at Hanover College.