NASA Technical Reports Server (NTRS)
"NASA Technical Reports Server (NTRS) provides access to aerospace-related citations, full-text online documents, and images and videos. The types of information include: conference papers, journal articles, meeting papers, patents, research reports, images, movies, and technical videos – scientific and technical information (STI) created or funded by NASA."
- National Advisory Committee for Aeronautics (NACA) (1915-1958)
- National Aeronautics and Space Administration (NASA) (1958 to present)
- NASA Image eXchange (NIX) (1900 to present)