The NASA Technical Reports Server provides access to NASA's current and historical technical literature. NTRS searches three major collections: NACA (1915-1958), NASA (1958-present), and NASA Image eXchange (NIX) (1900-present). Search results include: conference papers, images, journal articles, photos, meeting papers, movies, patents, research reports, and technical videos.
EnergyFiles searches more than five hundred databases and Web sites containing information and resources pertaining to science and technology of interest to the Department of Energy, with an emphasis on the physical sciences.
The United States Department of Commerce National Technical Information Service (NTIS) serves as the largest central resource for government-funded scientific, technical, engineering, and business related information available today. Included are citations for more than 3 million publications in more than 350 subject areas.