Professional Litho is one of the largest independently owned premedia companies in the United States. It is a specialist in the graphic design industry. Its core services include prepress/print management, photography, design and digital asset management. The company also has expertise in computer-to-plate file preparation and large-format printing. It is a contributor to trade organizations that include the International Prepress Association, Print Industries of Minnesota, Institute of Packaging Professionals, Advertising Federation of Minnesota and Medical Alley. Professional Litho s portfolio includes shopping bags designed for Marshall Field s; photography for Shop NBC s holiday catalog; a college planning calendar; and multiple retouching jobs performed on aged photographs.