Boats travel on the Chicago River after workers dyed it g...

Boats travel on the Chicago River after workers dyed it green to kick off the city's St. Patrick's Day celebration on March 16, 2013 in Chicago, Illinois. The dying of the river has been a tradition in the city for 43 years. Chicago River Dyed Green In St. Patrick's Day Tradition on March 16, 2013 in Chicago, Illinois

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