Irish and British treaty documents are set to be displayed side by side for the first time as part of exhibition in London.
The treaty, which was signed a century ago, ultimately led to the partition of Ireland and sparked the civil war.
'The Treaty, 1921: Records from the Archives' opens up a series of exhibits including historical records, official documents and private papers and for the first time Anglo Irish Treaty documents will be presented side by side.
The exhibition has been organised to mark the opening of negotiations at Downing Street 100 years ago yesterday.
The exhibition will also detail what life was like in London for the Irish delegation including the tough final days and hours leading up to the signing of the treaty on December 6 1921.
It also documents the return of the delegation to Ireland and the events that followed.
Minister for Tourism, Culture, Arts, Gaeltacht, Sport and Media Cathering Martin said the project will help with understanding the past.
"This exhibition is critical in furthering our understanding of the negotiations and the signing of the treaty," she said.
"I would like to thank the National Archives for developing this important display by placing the authenticity of the archival record at its centre and also the British Academy for generously hosting the exhibition."
She also praised the various organisations in Ireland and Britain who collaborated on the project.
"It is only by working together that we can share our different perspectives and enrich our mutual understanding," she said.
The exhibition will open at the British Academy in London on October 12 and run until October 23 before moving to Dublin Castle from December 6 until March 27, 2022.
