Top Sites for Finding U.S. Government Sponsored Technical Reports
- U.S. Department of Defense Technical Information Center (DTIC)
- NASA - Scientific and Technical Information Program (NTRS)
- U.S. Department of Energy - Office of Scientific and Technical Information (OSTI)
- U.S. Environmental Protection Agency - National Service Center for Environmental Publications (NEPIS)
- National Technical Information Service - National Technical Reports Library (NTRL)
- Library of Congress - Technical Reports and Standards Guide