City SC ST João Klauss has 2nd-most selling kit in MLS
Major League Soccer - Wikipedia
City SC's Klauss second only to Messi in MLS jersey sales
St. Louis City SC ranks among top MLS clubs for merchandise, jersey sales - St. Louis Business Journal
Longtime soccer hotbed St. Louis finally gets MLS team - The San Diego Union-Tribune
Gamez Designs - St Louis City SC Kit Concept
60 things every St. Louis CITY SC fan should know
St. Louis City SC gives first look at its team jerseys (Photos) - St. Louis Business Journal
MLS attendance data shows St. Louis' embrace of City SC