I just came across this article on a pool league in Philadelphia. It has the typical emphasis on seediness (not to imply that it's never deserved), but there's also a bit about Philly back in its pool day.
http://www.citypaper.net/cover_story/2012-03-08-jim-celebre-pool-league-kensington-philadelphia.html
http://www.citypaper.net/cover_story/2012-03-08-jim-celebre-pool-league-kensington-philadelphia.html