Located in Springfield, Md., MD Publications Inc. is one of the leading publishers of automotive aftermarket trade journals and newsletters in the United States. The company provides accurate news and up-to-date technical and management information to the automotive repair industry. Established in 1976, MD Publications Inc. provides mailing list services, advertising production/re-production, printing services and research. It is a parent company of Showpower Expo, Undercar Digest and Transmission Digest. The company s twice-a-month industry newsletter, Short Line, is designed for manufacturers, distributors and multi-shop operators.