I like this quiz a lot, but some things to be addressed: Some of these are owned by bigger non-Chicago companies - Jewel-Osco, Goose Island, etc. Aldi is based in Germany. Road Ranger is based in Rockford. United Airlines is misspelled. Also, Skidmore, while a Chicago firm, doesn't seem to belong here. You may want to title this 'Chicago Metropolitan Companies.' There's a ton more you could add: WW Grainger, Hartmarx, etc. I'd love to see an expanded and edited version.