The National Technical Reports Library provides access to US Federal government technical reports in science and technology. It indexes about 2,000,000 reports and currently provides access to PDF copies of some 800,000 reports published since 1995. (More reports will be added, as pre-1995 reports are scanned.) Note that while access is free to the public, you must register with NTRL to gain access, and you may only download five reports per session. Also, free access is only available within the borders of the United States of America.
The Technical Report Archive & Image Library (TRAIL) is a collaborative project from nearly 40 academic libraries working to build a complete collection of digitized technical reports. Project members identify, acquire, catalog, and digitize technical reports issued primarily prior to 1976, with some reports as late as 1999. Currently over one million pages of technical report content are available.
Date Coverage: 1900-2000
Materials Indexed: Technical Reports
The NASA Technical Reports Server is a valuable resource for researchers, students, educators, and the public to access NASA's current and historical technical literature and engineering results. Over 500,000 aerospace-related citations, over 200,000 full-text online documents, and over 500,000 images and videos are available. NTRS content continues to grow as new scientific and technical information (STI) is created or funded by NASA. The types of information found in the NTRS include: conference papers, journal articles, meeting papers, patents, research reports, images, movies, and technical videos. The NTRS integrates NASA's following three collections and enables search and retrieval through a common interface :NACA Collection: Citations and reports from the National Advisory Committee for Aeronautics period lasting from 1916 to 1958. NASA Collection: Citations and documents created or sponsored by NASA starting in 1958 and continuing to the present.NIX Collection: Citations and images, photos, movies, and videos are downloaded from the NASA Image eXchange and served out through NTRS. NIX is a separate system and users can also go directly to the NIX site to search imagery.
Date Coverage: 1916-present
Materials Indexed: Images; Photographs; Reports; Technical Reports; Video
OSTI.GOV is a portal to free, publicly-available DOE-sponsored R&D results including technical reports, bibliographic citations, journal articles, conference papers, books, multimedia and data information. OSTI.GOV was developed by the U.S. Department of Energy (DOE) Office of Scientific and Technical Information (OSTI) to increase access to science, technology, and engineering research information from DOE and its predecessor agencies. The database was formerly known as SciTech Connect.
Date Coverage: 1948 to present.
Materials Indexed: Books; Conference Proceedings; Government Documents; Journal Articles; Technical Reports
The Defense Technical Information Center (DTIC) serves the DoD community as the largest central resource for DoD and government-funded scientific, technical, engineering, and business related information.
This site is EPA's premier site for accessing EPA publications, with more than 7,000 in stock and 35,000 digital titles, free of charge. EPA’s print publications are available through the National Service Center for Environmental Publications (NSCEP), and EPA's digital publications are stored in the National Environmental Publications Internet Site (NEPIS) database.
Use OpenNet to locate over 485,000 bibliographic references and 140,000 recently declassified documents, including information declassified in response to Freedom of Information Act (FOIA) requests received by the Department of Energy.