By the Numbers piece on Maine\u27s largest chambers of commerce, ranked by member

By the Numbers piece on Maine\u27s largest chambers of commerce, ranked by membership as of February 2009. The five largest, in descending order, of the 15 listed are: Maine State Chamber of Commerce in Augusta, Portland Regional Chamber of Commerce in Portland, Androscoggin County Chamber of Commerce in Lewiston, Bangor Region Chamber of Commerce in Bangor and The Greater York Region Chamber of Commerce in York