Includes the full text of the 1582 Catholic Rheims New Testament and 1609 Catholic Douai Old Testament, which are very difficult to find. (The "Douay Bible," most readily available in full text online is actually an 18th century revision by Bishop Richard Challoner, a convert from Anglicanism, who modified the text to make it less Latinate and more like the King James version.)
The Latin works of the Church Fathers from Tertullian in 200 AD to 1216 as published in the first edition of Migne's Patrologia Latina. See Documenta Catholica Omnia for another version and the Patrologia Graeca.
Part of Gale Primary Sources: Archives Unbound, the collection describes how various denominations and non-denominational organizations began to create Sunday schools in an effort to educate the illiterate, particularly children.