http://www.nytimes.com/2009/12/16/dining/16cookies.html?pagewanted=1&_r=1&em
NYTimes article discusses the "Pittsburgh" tradition of cookie tables at weddings. It does give mention to Youngstown as the possible origin of the tradition as well.
Youngstown lays claim to the cookie table
http://www.post-gazette.com/pg/04228/360763-34.stm