District 13 - ACBL | Units 123, 149, and 222 | |
Chicago Contract Bridge Association | Unit 123; Chicago area and Lake Geneva, WI (as tournament site) | |
Greater Milwaukee Bridge Association | Unit 222; Milwaukee area, Racine, Kenosha, Dousman, and Lake Geneva (as tournament site) | |
American Contract Bridge League | 25 Districts in USA, Canada, Mexico, and Bermuda | |
American Bridge Teachers Association |