Other basketball leagues in 1951:    

1951 NPBL Season

8 teams competed during the regular season
Sheboygan Red Skins finished in 1st place to claim the championship

League Note
The Sheboygan Red Skins and Waterloo Hawks both claimed the championship because they were each in first in their divisions at the end of the season, but they never met in a playoff series, due to demise of the league.