Hi Zantonio and welcome to Wikipedia. Thank you for adding to the article on Economy of Chicago, butI noticed that your additions included a whole lot of numbers in square brackets, not linked to any references down below. Would you please add these references, but note that if parts of the text have been copied from somewhere else, that is not allowed under copyright rules and these parts should be removed: Noyster (talk), 12:13, 18 December 2014 (UTC)