I am a self-learner and am really interested in the writings of the Christian fathers during the Ante-Nicene period. I found an great e-book for a few dollars titled "The Complete Ante-Nicene Church Fathers Collection [9 volumes]", and I also found a set of books called "The Early Church Fathers, 38 Volumes." I'm just not sure whether either of these contains all of the writings found during that period or just a selection of them. What I'd really like to have is a list of all of the writings discovered during this period, but I can't seem to find it. Are any of you aware of such a list? I hope this isn't too loaded a question.
Unless I am mistaken, there has never been an English translation set that encompasses absolutely all the ante-Nicene writings. Most people use ccel.org to read the Ante-Nicene Fathers edited by James Donaldson and Alexander Roberts which, unless I am mistaken, is the most comprehensive English translation set of the ante-Nicene writings. If you want to compile a list of all the ante-Nicene writings, you would probably need to resort to reviewing Jacques Paul Migne’s Patrologiæ Cursus Completus: Series Græca (161 vol.) and Series Latina (220 vol.), but of course, you need to know Greek and Latin.
It's not free, and it's not complete, but The Fathers of the Church: A New Translation is the closest thing to a complete set of the writings of the church fathers that I've seen in English. It includes over 120 volumes of writings, though many of these relate to the post-Nicene period. It's frequently cited by other works, like the Ancient Christian Commentary on Scripture.
I've often turned to it when the out-of-copyright Ante-Nicene Fathers simply doesn't provide the material I'm looking for, like Origen's Commentary on Romans. And I find that the translation is usually better, both in accuracy and readability.
As mentioned, the volumes aren't free online, but thankfully many pages are accessible through Google Books – Origen's commentary linked above can be previewed on Google Books, at least in the USA.
They are available for free with the free download of e-sword:
This is an excellent tool with many free resources included.