By 1994, it's hard to say. A lot of manufacturers have eliminated fender and rack eyelets because...umm.. they're so heavy or something. (Actually it's because they are a knock against the bike's racerboy image and because many road bikes don't have enough clearance to fit them anyhow).

If you take it to your bike shop, they'll be able to help you out. If you have front suspension, that's probably a no-go and the best you can do is a clip-on or a mudguard on the downtube. Otherwise, the best option is a set of bolt-on full coverage fenders. If you have a rigid frame but no eyelets, you can usually make do with some P-clamps and zip-ties. Otherwise SKS Raceblades are designed for bikes without eyelets, but they're more expensive and don't cover nearly as well. I'm also not sure if they're available in sizes wide enough for mountain bikes.