Collection: Patrick H. Pearse Letters Letter ID: L.(p.c.) 208/OCS Year: 0 Source: The letters of P.H. Pearse, Edited by Séamus Ó Buachalla, Gerrards Cross, Bucks.: Smythe, 1980.
Collection: James Connolly Correspondence Letter ID: 630-page534 Date: 1915-12-05 Source: Between Comrades, James Connolly, Letters and Correspondence 1889-1916, Edited by Donal Nevin, Gill & Macmillan, Dublin 2007.
Collection: T. S. Eliot Letters 1898-1922 Letter ID: 183 Date: 1917-10-22 Source: Valerie Eliot and Hugh Haughton, ed. (2011). The Letters of T. S. Eliot. Vol. 1, 1898–1922. London: Faber and Faber.