I think the Mongoose might be a department store bike (sorry to be a downer
), but the others look like good finds. In particular, the Stumpjumper with the Rockshox RS1 could be worth something. (Although that generation of Stumpjumper might have been a bit later than the RS1; the fork might have been added later.) I'd do a search on ebay and see if the fork is worth anything. You might be surprised.
For the Pelican of vintage mountain bikes, try here:
http://forums.mtbr.com/forumdisplay.php?f=39
I bet there are a couple people that would pay more for that Rockshox than you paid for the entire package.
Have fun,
Jim