Hmmm. You could check with large auto junkyards to see if they have one of them in their yard. They might have the manual in the glove compartment.
You could also try calling a dealer and ask them if they know where you might find one.
I think any information you might need though, you could find on the internet.
If you wanted to know what oil to use for example, you could do a search on, "recommended motor oil 1997 Jeep Cherokee".