Photograph of Caption For Charters of Freedom Display Scale Model

Original caption: Scale model of vault mechanism that safe-guards the Declaration of Independence, the Constitution, and the Bill of Rights. When the red light is on, the mechanism to drive this model is functioning and will operate automatically at half-hour intervals beginning at 9 A.M. The original Documents are on display in the Exhibition Hall. --Gift of Mosler Safe Company.
Historic Photograph File of National Archives Events and Personnel