Among the surprises in a new exhibition at the Chicago History Museum: streets paved with wood, an unusual heat wave and exoneration for Mrs. O’Leary’s cow.Among the surprises in a new exhibition at the Chicago History Museum: streets paved with wood, an unusual heat wave and exoneration for Mrs. O’Leary’s cow.Read MoreFires and Firefighters, Museums, Chicago (Ill), Historic Buildings and Sites
