For a sort-of historical reference, the Bike Pro catalog:
BikePro.com / the Buyer's Guide / Bicycle Parts at their finest!, 2015 is good for '90's era components.
The thing is, what are you looking for? What parts work on what frame? That's nearly impossible because bicycles are infinitely fungible: parts and components can be swapped across eras with impunity given a little knowledge and perhaps some tinkering.
Here's where I'm coming from. I spent most of the '80's working in the bicycle business, working in shops and parts warehouses, finishing up at Bike'alog, an information service for bicycle dealers. We tried to collect as much information as we could and cram it into our database. Because of this, I'm aware of what fits what for that era. I've kept up with things somewhat, but my knowledge of some of the later variations is a bit spotty.
For instance: in my garage is a 1977 Schwinn Superior, rebuilt and now equipped with first series Shimano XTR components from the early '90's. It took a smidgen of finagling, but everything works perfectly together and the bike is a pleasure to ride. Certainly the Schwinn company never imagined the changes in bicycle design and component selection that would happen in the decades after the frame was produced, but since bicycle "standards" stayed relatively consistent putting this bike together was straightforward.
I see that you are a Lightning P-38 recumbent owner. Are you looking for something for that bike? Here's mine, bought in 1990, ridden through the '90's, rebuilt multiple times. I broke it in half (a design weakness of early extra-large frames) and it was repaired by Pat Franz at TerraCycle. It's a garage queen now since I have several other bikes that get ridden.
