Jim Hague on the RPG.net forums has kindly put together all the little bits of old CoH story bible documents he has on
Google Docs. Format is PDF inside a zipped file, although Google Docs allows direct viewing.
I'm not entirely sure about the actual NDA status of this, but Jim says that he was released from the NDA a few years ago, after the Eden tabletop RPG fell through, and it should be all right to distribute it far and wide. (He also gave me permission to repost wherever I wish, and presumably wherever anyone wishes.)
This is Old Information, prior to City of Villains (but obviously taking CoV into account anyway). I've not had a chance to do more than glance through some random bits, so there may be surprises in store. Obviously many things have been changed since then, so it's mostly a glimpse into the old ideas that may or may not have made it into the present day. A lot of it fills out the background lore for the Eden RPG, particularly for the city zones.
I can't post on the official boards (still have the login bug, now presumably never to be solved), and I don't think I have a Paragonwiki account (should get around to doing that some time soon...), so if anyone wants to organize the info and post it there, feel free.