Leagues and Clubs of USA1956/57
American Soccer League (1. League)
unkown
- Castle Shannon
- Chicago Falcons
- Chicago Maroons
- Chicago Slovak
- Chicago Ukrainian Lions
- Danish-American Los Angeles
- Harmarville Hurricanes
- Los Angeles Scots
- Morgan Strasser
- New York Greek American AA
- New York Swiss
- Paterson Ford
- Ponta Delgada Fall River
- Rochester Ukrainians
- SC Eintracht New York
- St. Louis Kutis
