US Government Printing Office
732 N. Capitol St.
Washington, DC 20401
Hours: Monday-Friday 7:00 AM-6:30 PM Eastern Standard Time (EST)
Telephone: [1] (202) 512-1800; toll free: [1] (866) 512-1800
FAX: [1] (202) 512-2104
http://bookstore.gpo.gov/

National Technical Information Service
5285 Port Royal Road
Springfield, VA 22161
Hours: Monday-Friday 8:00 AM-6:00 PM Eastern Standard Time (EST)
Telephone: [1] (800) 553-6847 (only in the US);
[1] (703) 605-6000 (for outside US)
FAX: [1] (703) 605-6900
http://www.ntis.gov/

The World Factbook can be accessed on the Internet at: https://www.cia.gov/library/publications/the-world-factbook/index.html