"Documenting the American South (DocSouth) is a digital publishing initiative that provides Internet access to texts, images, and audio files related to southern history, literature, and culture. Currently DocSouth includes twelve thematic collections of books, diaries, posters, artifacts, letters, oral history interviews, and songs." That's what they say. Run by the University of North Carolina.
This is the modern history sourcebook. Just as good as the medieval and ancient, it's a must for anyone researching the modern period. Excellent collection and wonderfully organised.
Of course these comrades have no ulterior motives in providing the material. Of course. DEATH TO THE CAPITALIST PIGS! Of course. Still valuable as a source of historical information though.
A very large collection of primary source texts on religion from all regions and time periods. He's got everything in there - even Sky Lore. Sounds trippy.
Has quite a bit of modern information (which isn't too bad though suffers from the usual brevity and superficiality which afflicts internet secondary sources) and some primary documents if you follow the links.