National Museums IrelandThe last letter written by Seán Mac Diarmada (Sean MacDermott) letter, 11 May 1916
Flickr - NLIThe shell of the G.P.O. on Sackville Street after the 1916 Rising photograph, May 1916
National Museums IrelandEaster Sunday Manouevres, 1916 / mobilisation order document, 21 April 1916