1990 Schwinn Crosscut, built by Giant from what I can tell. Shimano 400LX group, including one of the very first "STI" shifters (yes, they came out with integrated shifters/brake levers for flat bar first, then for drop bars). So far I've replaced the original saddle with the WTB model seen here, added a cyclometer mount, adjusted the bar-ends and rack position. Currently putting new brakes on it.