Factory sealed DVD</br></br>Product Description</br></br>Americas most revered public documentsthe Declaration of Independence, Bill of Rights, and Constitutionwere threatened by the ravages of time, until a unique team of conservators, engineers, and historian intervened. In this compelling documentary, NOVA cameras captured the controversial five-year project to design state-of-the-art protective casements for the deteriorating documents.</br><br/>http://www.amazon.com/gp/product/B0000B1OG1