File:2011-08-07 1248x1872 chicago chicago board of trade building.jpg
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![File:2011-08-07 1248x1872 chicago chicago board of trade building.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/1/15/2011-08-07_1248x1872_chicago_chicago_board_of_trade_building.jpg/400px-2011-08-07_1248x1872_chicago_chicago_board_of_trade_building.jpg?20110809202252)
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