Just got home with this. 1985 Trek 520. Reynolds 501 tubes. It appears to be all stock which is kind of a disappointment. I wanted to cold set the rear to accept 130mm hubs and put a modern group on. Now I might want to keep it stock. The tires are dry-rotted pretty bad and the brake pads seem brittle.
This is my other offering. 1988 Trek 1200. The aluminum sure beats me up on the rough Milwaukee streets (which is why I picked up the bike above). BTW, the Soma Everwear tires are excellent for heavy urban cycling.