1988 Trek 560
As found:

It was unridden since the 1980s. I think it was probably stored in an attic or near a radiator because all the grease was completely dry and tar-like. Headset and BB would barely move. Nothing a little elbow grease wouldn't remedy. Tires were new, but completely dry-rotted. They held air, but I wouldn't trust 'em -or the glue holding them one.
Now: