Website that looks cool: in re laws and stuff

This Yale online document thingie looks totally awesome.  It's called the Avalon Project and it's a bunch of online texts of old laws and treaties and stuff, arranged into collections.

I was poking around looking for text of treaties between the U.S. Government and Native American tribes and this came up.  It has stuff that could be handy for people doing all kinds of worldbuilding, I suspect.
http://avalon.law.yale.edu/