Documents in the NTIS Technical Reports collection are the results of federally funded research. They are directly submitted to or collected by NTIS from Federal agencies for permanent accessibility to industry, academia and the public.  Before purchasing from NTIS, you may want to check for free access from (1) the issuing organization's website; (2) the U.S. Government Publishing Office's Federal Digital System website; (3) the federal government Internet portal; or (4) a web search conducted using a commercial search engine such as
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Welcome to the National Technical Reports Library

Worldwide searching for federally funded bibliographic science and technology research information is now free on the basic Public Access NTRL website.  The Public Access NTRL is open to all users (domestic and international) for search and discovery.  To further enhance your search results with the full-text document, you must register and accept the "Terms and Conditions of Use" of NTRL. Additionally, NTRL will now be available at the Premium Access level with advanced search, display, and reporting capabilities.  Premium Access NTRL requires an annual subscription of $200 for users within the U.S. and $300 for users outside the U.S. Users coming from outside the U.S. must subscribe to Premium Access NTRL in order to view full text (PDF) reports. See the Basic and Premium Access Comparative Chart word doc chart for details on access capabilities.

NTIS is also offering a range of premium subscription based services to individuals, universities, corporations, and other institutions for varying levels of access to all documents in its collection (see NTRL Access Chart word doc). Access outside the U.S. is also available via individual and institutional subscriptions.

To request assistance on NTRL please email:

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