The Blues were a top Yankees affiliate in 1947 and the American Association pennant winner that year. Kansas City led the AA in attendance, with over 379,000 fans going through the turnstiles at Blues Stadium. The Kansas City Blues was located in Missouri in the Midwest. The team was one of the eight founding members of the American Association. These ball caps are limited in production. If you are interested in one of these repro caps, it is best to order while available. All Ebbets Field Flannels authentic ball caps are made in the USA.