If you look at a satellite image of Chicago, there is a distinct diagonal alley running Southwest from Wrigley Field. It then seems to run down Lakewood. At Wrightwood there is another diagonal jog, and there are some tracks visible in the parking lot of the Lakeshore Sport and Fitness Club at Fullerton where Lakewood would be. What was this track? What was it used for? When did it go out of service? Was it used to go to Wrigley or does it predate the field, used to access whatever was at Wrigley before the stadium was built?