Other football leagues in 1966:    
AFL
The AFL and the NFL champions faced each other in the first annual Super Bowl at the end of the season to determine an overall champion.  

16 stadiums were used during the 1966 NFL season. Isolated games and short term temporary home fields are not necessarily included.

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  1. I sincerely appreciate the research work, and the information being shared. It is important and interesting history.

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