As the title states, this link to the North American Grand Cherokee Association forum contains links to a lot of different Jeep models from CJ's, SJ's,XJ's, JK's, KJ's, KK's, MJ's, TJ's, WJ's, WG's, WK's, XK's, ZJ's, ZG's covering years 1981 to 2008....
It contains Part Catalogues and Factory Service Manuals, there's thousands of pages in PDF format.
It's a good idea to find the ones that you find useful/helpful/applicable and then download and save to your hard drive and to another portable device, say a USB stick and keep that in your car's glovebox for whenever/where ever you may just need it.
http://www.nagca.com/forum/showthread.php?t=49857
Hope you find it useful!!
(Can we make this a Sticky, please?)