Celtic History
UCC Publish Texts Many Documents/Annals
The Wild Geese (Weekly) Recommended
Almost every link you'd ever need (including texts of the 1921-22 Treaty Debates) can be found in Irish History on the Web. It is a private non-partisan study. (Saved us a lot of work!)
CAIN is Conflict Archive on the Internet. Every kind of paper, document, photographs, reports on Bloody Sunday are here from 1968 to the present.
*Note: If your browser doesn't work on CAIN, try CAIN II or vice versa.
The Wild Geese is an excellent on line site on Irish History. It is published weekly, so each week is different.