Plunkett, G. O., & Plunkett, M. J. P. (1923). Letter from George Oliver Plunkett to Mary Josephine Plunkett, Countess Plunkett, from Mountjoy Gaol, explaining his transfer from Newbridge Barracks with a number of other prisoners, though John "Jack" Plunkett remains behind in Newbridge Barracks.

Plunkett, George Oliver, and Mary Josephine Plunkett Plunkett. Letter from George Oliver Plunkett to Mary Josephine Plunkett, Countess Plunkett, from Mountjoy Gaol, Explaining His Transfer from Newbridge Barracks with a Number of Other Prisoners, Though John "Jack" Plunkett Remains Behind in Newbridge Barracks. 1923.