== Kilder / eksterne henvisninger ==
* David Pietrusza ''Major Leagues: The Formation, Sometimes Absorption and Mostly Inevitable Demise of 18 Professional Baseball Organizations, 1871 to Present'' Jefferson (NC): McFarland & Company, 1991. {{ISBN|0-89950-590-2}}
* Union Association at [http://www.baseball-reference.com/leagues/UA.shtml baseball-reference.com].
* [http://www.baseballlibrary.com/ballplayers/player.php?name=Union_Association Union Association] {{Webarchive|url=https://web.archive.org/web/20071011235719/http://www.baseballlibrary.com/ballplayers/player.php?name=Union_Association |date=11. oktober 2007 }} and [http://www.baseballlibrary.com/chronology/byyear.php?year=1884&previous=yes 1884 in baseball] {{Webarchive|url=https://web.archive.org/web/20070324223117/http://www.baseballlibrary.com/chronology/byyear.php?year=1884&previous=yes |date=24. marts 2007 }} at baseballlibrary.com
=== Noter ===
{{reflist}}
Filosofi Historie Sport Kultur Foreninger Organisationer