National Commission on Terrorist Attacks Upon the United States: Staff Monographs and Staff Statements [archive] [open html - 16KB]
"The National Commission on Terrorist Attacks Upon the United States (also known as the 9-11 Commission), an independent, bipartisan commission created by congressional legislation and the signature of President George W. Bush in late 2002, is chartered to prepare a full and complete account of the circumstances surrounding the September 11, 2001 terrorist attacks, including preparedness for and the immediate response to the attacks. The Commission is also mandated to provide recommendations designed to guard against future attacks." This website includes links to "staff monographs, providing detailed treatments of subjects covered by the Commission's mandate, and staff statements, presented during the Commission's public hearings."
National Commission on Terrorist Attacks Upon the United States: http://www.9-11commission.gov