The 1966 Senior League World Series took place from August 18–20 in Des Moines, Iowa, United States. East Rochester, New York defeated La Habra, California in the championship game.
Teams United StatesInternational East Rochester, New YorkEast Fort William, OntarioCanada Dayton, OhioEnglewood HillsNorth Monterrey, MexicoDel NorteMexico Elkton, MarylandSouth La Habra, CaliforniaWest
Results 1965 Senior Meet Champ Loses, 6-0. The Des Moines RegisterCalifornia, N.Y. Teams Go to Final. The Des Moines RegisterN.Y. Team Wins Senior Tourney, 4-2. The Des Moines Register
1966 Senior League World Series ChampionsEast Rochester, New York
References