My main reasons for wanting to do this are to have a good text, certain to be in the public domain, and free even of Creative Commons licensing. I think Creative Commons is a great project, and I've used those in the past (including my recent video) but nothing anywhere beats public domain.
The great thing about this particular text is that it was last revised in 1922, the year before the ironclad copyright cut-off. From 1923 on is where everything gets complicated.
On most sites that have the text I can't even find where they got it or what it's based on.