| Civic institutions in Cork | O'Sullivan, William, 1908-1992 | Article in Journal | | 1943 |
| The chronology of the first Anglo-Irish coinage | Dolley, MichaelO'Sullivan, William, 1908-1992 | Article in Book | | 1967 |
| The Corofin (Co. Clare) hoard : late twelfth - early thirteenth centuries | Dolley, MichaelO'Sullivan, William, 1908-1992 | Article in Journal | | 1965 |
| The earliest Anglo-Irish coinage. | O'Sullivan, William, 1908-1992 | Monograph or Collective Volume | The Stationery Office | 1964 |
| The earliest Irish coinage | O'Sullivan, William, 1908-1992 | Article in Journal | | 1949 |
| The ecomonic history of Cork city from the earliest times to the Act of Union | O'Sullivan, William, 1908-1992 | Monograph or Collective Volume | [s.n.] | 1937 |
| The economic history of Cork City from the earliest times to the Act of Union | O'Sullivan, William, 1908-1992 | Monograph or Collective Volume | Cork University Press | 1937 |
| The only gold coins issued in Ireland, 1646 | O'Sullivan, William, 1908-1992 | Article in Journal | | 1965 |