Crystal City, Texas, 1939

Historic American Engineering Record (HAER)

The Historic American Buildings Survey/Historic American Engineering Record/Historic American Landscapes Survey (HABS/HAER/HALS) is a vital part of the National Park Service’s historic preservation effort. Now know as Heritage Documentation Programs, the program documents important architectural, engineering, industrial, and landscape sites throughout the United States. A complete set of documentation, consisting of measured drawings, large-format photographs, and written history, plays a key role in accomplishing the mission of creating an archive of American architecture and engineering and in better understanding what historic resources tell us about America’s diverse ethnic and cultural heritage. To insure that such evidence is not lost to future generations, the HABS/HAER/HALS Collections are archived at the Library of Congress, where they are made available to the public. CLICK HERE >>

Throughout the history of the program, it has played a leading role in ‘preservation through documentation” and is recognized as the nation’s oldest federal preservation program. Today’s work builds on a seventy-five year tradition of documentation expertise, and incorporates technological advances, such as computer-aided drafting (CAD), digital-rectified photogrammetry, laser scanning, and electronic surveying. And although as division the National Park Service the program receives its legislative authority and base funding from the U.S. Congress, Heritage Documentation Programs depends on outside funding to complete its mission.

For more information contact:

Heritage Documentation Programs
National Park Service

1201 Eye Street, NW (2270)
Washington, D.C. 20005
(202) 354-2135

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