The National Technical Information Service (NTIS) of the U.S. Department of Commerce is the nation's largest central source for published government-sponsored scientific, technical, engineering, and related business information. NTIS has approximately 3 million information titles in its collection. The NTIS customer-base includes scientists, engineers, the business community, librarians, and information specialists in government, academia, and the general public. Products can be ordered at the following web link: http://www.ntis.gov/help/orderplacing.aspx.
The following website provides a list of Frequently Asked Questions for the U.S. Department of Commerce's National Technical Information Service: http://www.ntis.gov/about/faq.aspx