Chicago's green river tradition has a surprising connection to soda brand: report
St. Patrick's Day: Why they began dyeing the Chicago River green : NPR
Meet the man who dyes the Chicago River green for St. Patrick's Day
Is the Chicago River dye harmful? Reason for St. Patrick's Day tradition - ABC7 Chicago
Dyeing to be Green: The Chicago River and St. Patrick's Day – NiCHE
The Chicago River Will Be Dyed Green Tomorrow For Its Annual St. Patrick's Day Tradition - Secret Chicago
Videos show boats dying Chicago River green for St Patrick's Day and here's how they do it - Irish Mirror Online
Meet the Family That Dyes the Chicago River Green for St. Patrick's Day
St. Patrick's Day Miracle? The Chicago River WAS Dyed Green, After All, Chicago News