| Eamon de Valera | O'Neill, Thomas PatrickPakenham, Francis Aungier, 7th earl of Longford, 1905-2001 | Monograph or Collective Volume | Hutchinson | 1970 |
| Forty years of Anglo-Irish relations | Pakenham, Francis Aungier, 7th earl of Longford, 1905-2001 | Monograph or Collective Volume | Cork University Press | 1958 |
| Peace by Ordeal | Pakenham, Francis Aungier, 7th earl of Longford, 1905-2001 | Monograph or Collective Volume | | 1972 |
| Peace by ordeal : an account from first-hand sources of the negotiation and signature of the Anglo-Irish treaty, 1921 | Pakenham, Francis Aungier, 7th earl of Longford, 1905-2001 | Monograph or Collective Volume | New English Library | 1967 |
| Peace by ordeal : the negotiation of the Anglo-Irish Treaty, 1921 | Coogan, Tim PatPakenham, Francis Aungier, 7th earl of Longford, 1905-2001 | Monograph or Collective Volume | Pimlico | 1992 |
| Peace by ordeal; an account from first-hand sources of the negotiation and signature of the Anglo-Irish treaty, 1921 | Pakenham, Francis Aungier, 7th earl of Longford, 1905-2001 | Monograph or Collective Volume | Mercier Press | 1952 |
| The treaty negotiations | Pakenham, Francis Aungier, 7th earl of Longford, 1905-2001 | Article in Book | | 1968 |
| Ulster | McHardy, AnnePakenham, Francis Aungier, 7th earl of Longford, 1905-2001 | Monograph or Collective Volume | Weidenfeld and Nicolson | 1981 |