| Barnabe Googe, provost-marshal of Connaught, 1582-5 | O'Sullivan, M. D. (Mary Donovan) | Article in Journal | | 1938 |
| Italian merchant bankers and the collection of papal revenues in Ireland in the thirteenth century | O'Sullivan, M. D. (Mary Donovan) | Article in Journal | | 1947 |
| Italian merchant bankers and the collection of the customs in Ireland, 1275-1311 | O'Sullivan, M. D. (Mary Donovan) | Article in Book | | 1961 |
| Italian merchant bankers in Ireland in the thirteenth century : a study in the social and economic history of medieval Ireland | O'Sullivan, M. D. (Mary Donovan) | Monograph or Collective Volume | Allen Figgis | 1962 |
| Note on the St. Nicholas MSS | O'Sullivan, M. D. (Mary Donovan) | Article in Journal | | 1938 |
| Old Galway : the history of a Norman colony in Ireland | O'Sullivan, M. D. (Mary Donovan) | Monograph or Collective Volume | Kennys | 1984 |
| Old Galway : the history of a Norman colony in Ireland | O'Sullivan, M. D. (Mary Donovan) | Monograph or Collective Volume | Heffer | 1942 |
| Revenue and expenditure in a medieval Irish town | O'Sullivan, M. D. (Mary Donovan) | Article in Journal | | 1942 |
| Some documents relating to Galway | | Article in Journal | | 1939 |
| Some Italian bankers in Ireland in the later thirteenth century | O'Sullivan, M. D. (Mary Donovan) | Article in Journal | | 1949 |
| The centenary of Galway College (the text of a centenary lecture delivered in 1949 prepared for publication by Joe O'Halloran) | O'Sullivan, M. D. (Mary Donovan)
| Article in Journal | | 1999 |
| The exploitation of the mines of Ireland in the sixteenth century | O'Sullivan, M. D. (Mary Donovan) | Article in Journal | | 1935 |
| The use of leisure in old Galway | O'Sullivan, M. D. (Mary Donovan) | Article in Journal | | 1939 |
| The wives of Ulick, 1st earl of Clanrickarde | O'Sullivan, M. D. (Mary Donovan) | Article in Journal | | 1945 |