| Agenda for Irish history : 1, Norman Ireland | Richardson, Henry Gerald | Article in Journal | | 1945 |
| English institutions in medieval Ireland | Richardson, Henry Gerald | Article in Journal | | 1939 |
| Irish revenue, 1278-1384 | Richardson, Henry GeraldSayles, George Osborne | Article in Journal | | 1962 |
| Magna Carta Hiberniae | Richardson, Henry Gerald | Article in Journal | | 1942 |
| Norman Ireland in 1212 | Richardson, Henry Gerald | Article in Journal | | 1942 |
| Norman Ireland in 1212 | Richardson, Henry Gerald | Article in Journal | | 1942 |
| Parliament in medieval Ireland | Richardson, Henry GeraldSayles, George Osborne | Monograph or Collective Volume | Dundalgan Press | 1964 |
| Parliaments and councils of mediaeval Ireland. Vol. 1 | | Monograph or Collective Volume | The Stationery Office [for the Irish Manuscripts Commission] | 1947 |
| Some Norman monastic foundations in Ireland | Richardson, Henry Gerald | Article in Book | | 1961 |
| The administration of Ireland, 1172-1377 | Richardson, Henry Gerald,Sayles, George Osborne | Monograph or Collective Volume | The Stationery Office [for the Irish Manuscripts Commission] | 1963 |
| The Irish parliament in the Middle Ages | Richardson, Henry GeraldSayles, George Osborne | Monograph or Collective Volume | University of Pennsylvania Press | 1952 |
| The Irish parliament rolls of the fifteenth century | Richardson, Henry Gerald | Article in Journal | | 1943 |
| The Irish parliaments of Edward I | Richardson, Henry GeraldSayles, George Osborne | Article in Journal | | 1928 |
| The Preston exemplification of the Modus tenendi parliamentum | Richardson, Henry Gerald | Article in Journal | | 1942 |