World Trade Center | History, Height, Memorial, & Facts | Britannica
When Were the Twin Towers Built? | HowStuffWorks
Footage of the Twin Towers Being Built (1976) – The Public Domain Review
The World Trade Center: Statistics and History
Destruction and Rebuilding of the WTC | American Experience | Official Site | PBS
How building design changed after 9/11
World Trade Center (1973–2001) - Wikipedia
Construction of the World Trade Center - Wikipedia
What Were the Twin Towers?: 9781338100280: Books - Amazon.ca
The World Trade Center under construction through fascinating photos, 1966-1979 - Rare Historical Photos
Remembering September 11
The World Trade Center, by the Numbers | HISTORY
The World Trade Center's Construction: 8 Surprising Facts | HISTORY
:max_bytes(150000):strip_icc()/architecture-911destruction-1162748-crop-5b6c64e446e0fb0050cbe33c.jpg "Rebuilding the World Trade Center: A Photo Timeline")
Rebuilding the World Trade Center: A Photo Timeline
As the twin towers burned on September 11, hundreds of people became trapped in narrow stairwells - ABC News
The man behind the rebuilding of 9/11's Ground Zero | Reuters
History of the world's tallest skyscrapers
What Were the Twin Towers? - Who HQ
The Twin Towers Project: A Cautionary Tale | City Journal
Inside Twin Tower's Structure and the 911 Attack - Original World Trade Center - YouTube
One World Trade Center – SOM
Construction of the World Trade Center - Wikipedia
World Trade Center (1973–2001) - Wikipedia
World Trade Center History
Ground Zero rebuilding still continues in New York, 20 years after 9/11 | PBS NewsHour
