National Technical Reports Library (NTRL) This link opens in a new windowProduced by the U.S. Department of Commerce’s National Technical Information Service, this resource facilitates accessing the latest U.S. government-sponsored research and worldwide scientific, technical, engineering, and business-related information. NTIS is the central source for the sale of unclassified and publicly available information from research reports, journal articles, data files, computer programs and audio visual products from Federal sources.