RTE Century Ireland Introducing de Valera – The East Clare by-election and the rise of an Irish political leader open_in_new article, 2017
Decade of Centenaries timelineIreland’s Solemn League and Covenant: Anti-conscription protest form document, April 1918
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National Archives UKIrish Settlement: Proposals of the British government open_in_new document, 20 July 1921