Photos?
It would have been built in place after the ceiling. Look for pieces of 1x1 wood screwed onto the floor, walls and ceiling. The 1/8" panelling will be stapled in place and is very easy to peel off if you go slowly and carefully. Use a wide chisel. You may not find some of the 1x1 pieces until you have peeled away the paneling to reveal it.
Nothing will be glued in place. While you *could* glue the paneling back on, don't do it. I've used a pneumatic nailer with 1" nails but you could use small brads too. If you have a face frame for a door or drawers, it will be screwed on from behind. If you can't get your head inside, try a small mirror.
Screws are robertson (square head) type with a flange style head.
If you don't damage anything, it will be easy to reinstall.
