CNN
Cnn: War Against Terror
Impressive web site on the events of September 11, 2001, by CNN. Most of the information is accessible without a subscription, but there are a few video links that require a subscription. Excellent resource!
PBS
Pbs: America Responds
A "snapshot of PBS's coverage of the September 11, 2001 terrorist attacks." Includes analysis and insight, thoughts and tributes, and resources for parents and educators.
Other
National Commission on Terrorist Attacks Upon the Us: The 9/11 Commission Report
The official 9/11 commission final report details findings and executive summary. A great primary resource.
PBS
Online News Hour: September 11, 2001
Comprehensive web page that offers a plethora of outstanding resources for one who is studying the 9/11 terrorist attacks.
PBS
Pbs: Remembering Sept. 11: Two Years After the Attacks
Web page from NewsHour with a plethora of great resources surrounding the two-year anniversary of the terrorist attacks on September 11, 2001.
Library of Congress
Loc: Minerva: September 11 Web Archive Browse
Minerva, part of the Library of Congress, allows you to view a number of archived resources on September 11.
Library of Congress
Loc: September 11th Documentary Project
A site that captures the heartfelt reactions, eyewitness accounts, and diverse opinions of Americans and others in the months that followed the terrorist attacks on the World Trade Center, the Pentagon, and United Airlines Flight 93.
Other
Nyc Health: Substantial Physical and Mental Health Effects Reported
April, 2006, press release detailing negative health effects of people who survived the collapse of the World Trade Center on September, 11, 2001