I guess this is the best place to put links to all the web pages we know where we can find Documents of the Catholic Church from all the 2000 Years of History. The next is an amazing database that I just have found.
Conspectus Omnium Rerum Auctorumque Alphabeticus - Multilanguage Full Texts and Opera Omnia at Documenta Catholica Omnia
Conspectus Omnium Rerum Auctorumque Alphabeticus - Multilanguage Full Texts and Opera Omnia at Documenta Catholica Omnia