National Technical Reports Library (NTRL) - searchable online database of approximately three million federal science and technology reports. The library is a service of the U.S. Commerce Department's National Technical Information Service. The full text for 800,000 of these documents can be downloaded immediately in electronic PDF format without charge. The remaining NTRL reports, most published before 1995, must be scanned from microfiche archival files before being provided either as electronic PDF's or in print for a fee. However, each time a microfiche document is scanned to fulfill such a request, the agency will add the electronic full-text PDF to its online database for subsequent free public download.
