Book excerpt: Despite the fact that 160,000 people are locked up in the United States federal correctional facilities, practical information about the federal prison system remains difficult to locate. While some information may be found scattered on the Internet, in directions given at court, or through shared personal experience, there is no single source available that is a collection of all available information. The U.S. Federal Prison System is the first comprehensive reference work that includes official prison policies, first-person accounts from prisoners, and information about each federal facility.