An idea. If you need some more facts, and you've exhausted oddworld.com etc etc, just play through the games quickly. You can work from there as well. But you really should be doing this research stuff on your own.
I'm working on mine with Fax.
Well, here's my website so far:
http://itooddworld.tripod.com
It's no oddworld-web or oddworld maniac, but I'm pretty much satisfied. I will change the pics every now and then.