The Defense Technical Information Center provides this database of publicly available DoD and other government-funded information related to scientific, technical, engineering, and business fields.
NTIS databases contain bibliographic information on reports, standards, and other publications that can be ordered from NTIS, as well as some free full-text material
Information provided for 1976 and later patents includes a summary, any claims, description, images, and references. Earlier patents have a more limited suite of information available.
Allows searching various Smithsonian databases and collections including the Library, catalogs of paintings, and sculpture, archival material, sound recordings, films, and photographs
This portal, supported by the Energy Dept.'s Office of Scientific and Technical Information (OSTI), is a handy collection of links to scientific and technical databases in several countries.