The purpose of this research is to understand the changing demographics of the printing industry. Different research firms report different numbers for printing establishments. The principal source of data has been County Business Patterns, but it is not considered comprehensive in counting all establishments. Cahner's Blue Book, Dun & Bradstreet, State Street Consultants, TrendWatch and others track changes in printing business firms. Each supplier uses data from these firms and their own databases. Industry associations also track such demographics. The purpose of this research is to better refine industry sizing and changes.