there really arent any gaskets between the inner & outer covers - or at least none are really needed. The only place there is supposed be a gasket is on the center cover (outer) at the bottom, but even that is not a necessity, and it often gets misaligned when installing.
The two end covers sometimes have a thin layer of a foam type seal along the edge that meets the center cover, but again - not a necessity.
There are several smaller rubber seals & grommets on the back side of the back covers (that touch the block) - the only way I know of to get those is either from the dealer, or by purchasing a complete rebuild gasket set that will have every gasket, seal and o-ring needed to rebuild the entire engine (can often be found on ebay for around $50-60).
You could leave the covers off and the car will run just fine - many here "run naked", myself included - just be aware that there is the potential for problems in certain conditions - such as deep snow (been there, done that) Your 95 is still a non-interference engine, so no damage will occur if it should jump timing, but it is no fun trying to correct jumped timing in the dead of winter.