The Ghosts on the Bloomingdale Trail story walk is back! This collaboration between Free Street, the Chicago Park District, and the Friends of the Bloomingdale Trail features real ghost stories as told to us by Chicago residents. Starting October 22, walk along the Bloomingdale Trail (aka the 606) between Humboldt and St. Louis to find QR codes that take you to a mix of stories - some of our favorites from last year are back plus some new (and only…