| No profit but the name : the Longfords and the Gate theatre | Cowell, John, 1912- | Monograph or Collective Volume | O'Brien Press | 1988 |
| Soldier sailor : an intimate portrait of an Irish family | Pakenham, Eliza | Monograph or Collective Volume | Weidenfeld and Nicolson | 2007 |
| The Packenham-Longfords (sic) | McFadden, Hugh | Article in Journal | | 2015 |
| The Pakenhams - earls of Longford | O'Donnell, M. J. | Article in Journal | | 1969 |
| Tom, Ned and Kitty : an intimate portrait of an Irish family | Pakenham, Eliza, 1906-2002 | Monograph or Collective Volume | Phoenix | 2008 |
| Tullynally Castle gardens | Davies, Mary | Article in Journal | | 2005 |