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NIST Digital Archives

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The NIST Digital Archives (NDA) include collections of images and publications from the National Institute of Standards and Technology (NIST) and its predecessor, the National Bureau of Standards (NBS). NIST is a non-regulatory agency within the U.S. Department of Commerce. These collections continue to grow as more images and full-text publications are digitized.

 

Featured: Charters of Freedom Photographic Collection


In 1951 the National Bureau of Standards (NBS) built a helium-filled glass and metal case to preserve the the Declaration of Independence - one of three cases built to protect the Charters of Freedom. NBS also built cases for the Bill of Rights and the Constitution. In this image the front cover glass is checked for cleanliness before it is finally placed on the assembly of bronze bracket, inner cover place, Declaration of Independence document, backing paper, and back cover plate. When the front glass panel was in place, the assembly of the case was completed, then sealed. Browse images from this collection

 

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