It's not true that Yuengling can be found "only near Philly." It can be found all over PA, other states throughout the Northeast, Florida, and North Carolina. Believe it or not, Yuengling is actually the nation's fifth largest brewery.
For more info, check out www.inc.com/magazine/20040701/yuengling.html
See also: lager
PS - We also call "Kegs" Barrels. Get used to it.