Oh, some of us hang out here, too!

A '77 Traveler was one of a couple bikes that Schwinn had made by National in Japan. You've got a really good frame with decent components on it. As others said, replace the parts that age (tires, tubes, brake shoes), grease everything that moves (hubs, chain, cables) and give it a good cleaning. I bet it'll be good for another 30 years.