1920–present. Indexes technical reports, conference papers, journal articles, and other publications sponsored by the National Aeronautics and Space Administration (NASA) and its predecessor, the National Advisory Committee for Aeronautics (NACA). NACA Reports, Technical Notes, and Technical Memoranda are available in fulltext from 1917–1958. Some NASA reports are fulltext.
The results of CRREL's research projects are published in a technical report series covering topics of interest to Civil and Environmental Engineers. Reports from 1995 to present are available, as well as some older ones.