The Anglo-Irish Treaty is one of the most significant historical documents held by the National Archives. Using it as a centrepiece, the National Archives will present an exhibition that marks its role as the official repository of the records of the State, one hundred years since its formation. ‘The Treaty, 1921: Records from the Archives’ opens up significant historical records, official documents and private papers for the first time in the history of the State, including the first public presentation of the Treaty document.