Letter from John O'Hara Harte to Joseph McGarrity, discussing the future need for proclamations by the IRA to be accompanied by action, with reference to the recent bombings of customs posts [along the border in Counties Armagh and Fermanagh on 28 November 1938] and the need for effective propaganda, with which the "Split" in 1922 [that led to the Irish Civil War] could have been avoided,

1938 December 21.