The National Technical Information Service is a large central resource for U.S. government-funded scientific, technical, engineering, and business related information. The database of more than 3 million publications provides links to over 800,000 full-text technical reports in 350 subject areas. Free registration is required to access the PDF's of full text reports. Over 195,000 brief records have been added for pre-1964 information. The NTRL (National Technical Research Library) offers a new public interface for accessing authenticated government technical reports in the NTIS database. The Quick Search interface is available through the Public Access NTRL with full text links available if the user is signed in. (Updated regularly)
This permalink is a direct, persistent URL to the database that will always work and won't break.