Information for and about seventeen public law libraries in Massachusetts, including laws, regulation, and cases; subject guides; laws by popular name; full-text law journal articles; find-a-lawyer; ask-a-librarian; and podcasts. Good stuff.
If you are interested in the US Supreme Court, you should know about this site and its companion site, SCOTUSblog.com. The wiki will have a complete archive of Petitions to Watch since 2006, Supreme Court statistics, a case index, with more to come.
Congressional Documents Online
There are over 7000 full-text documents online totally over 1.5 million pages. From