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"GIS is an invaluable tool...".
This map shows the area before and after September 11, in close detail.

Transcript: GIS is an invaluable tool ... for the emergency response operations used extensively after the attack on the World Trade Center, September 11, 2001.


Location: World Trade Center
Object #: 2002.0116
Source: Gift of Sanborn Colorado LLC

Maps of lower Manhattan
Description: These geographic information system (GIS) maps are part of a computerized project mapping the city’s infrastructure for the New York City Department of Environmental Protection.

Context: The September 11 terrorist attack destroyed and damaged many New York City buildings, changing the landscape of lower Manhattan. These three geographic information system (GIS) maps document lower Manhattan before and after September 11, 2001.

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"South Manhattan, New York"
This map shows the lower portion of the island with the Twin Towers intact prior to the attack. The shadows of the towers are visible on the left side of the tip of Manhattan.
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Aerial photograph of approach to Brooklyn Bridge
Illustrating the different kinds of mapping and projection available in orthophotography, this poster features a close-up view of the Manhattan approach to the Brooklyn Bridge, northeast of the World Trade Center.

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©2002 National Museum of American History, Smithsonian Institution