| A MacCarthy miscellany (1117-1398) | Collins, John T. | Article in Journal | | 1948 |
| Arthur O'Leary, the outlaw : supplement | Collins, John T. | Article in Journal | | 1950 |
| Arthur O'Leary, the outlaw : supplement no. 2 | Collins, John T. | Article in Journal | | 1956 |
| County Cork families 1635-8, 1638-57 | Collins, John T. | Article in Journal | | 1962 |
| Dermod Moyle McCarthy of Carbery | Collins, John T. | Article in Journal | | 1951 |
| Donagh Moyle McCarthy of Phale | Collins, John T. | Article in Journal | | 1950 |
| Gleanings from old Cork newspapers of 1756 | Collins, John T. | Article in Journal | | 1964 |
| Gleanings from old Cork newspapers, 1758-1760, 1761-1762 | Collins, John T. | Article in Journal | | 1967 |
| Gleanings from old Cork papers | Collins, John T. | Article in Journal | | 1958 |
| Legal documents relating to east Cork (cont.) | | Article in Journal | | 1948 |
| Military defences of Cork | Collins, John T. | Article in Journal | | 1943 |
| Obvervations on Michael Collins with an account of his funeral | Collins, John T. | Article in Journal | | 2013 |
| Patriotic opinions of some Munster priests, 1847-1882 | Collins, John T. | Article in Journal | | 1959 |
| Some MacCarthys of Blarney and Ballea | Collins, John T. | Article in Journal | | 1954 |
| Some McCarthy's of Blarney and Bollea | Collins, John T. | Article in Journal | | 1955 |
| Some recent contributions to Cork diocesan history | Collins, John T. | Article in Journal | | 1951 |
| The Emmet family connections with Munster | Collins, John T. | Article in Journal | | 1953 |
| The Healys of Donoughmore | Collins, John T. | Article in Journal | | 1943 |
| The history of Blarney | Collins, John T. | Article in Journal | | 1955 |
| The McCarthys of Muskerry and Blarney Castle | Collins, John T. | Article in Journal | | 1999 |
| The O'Crowleys of Coill t-Sealbaigh | Collins, John T. | Article in Journal | | 1953 |
| The O'Regans of Carbery | Collins, John T. | Article in Journal | | 1958 |
| Uí Mac Caille, A.D. 1177 to 1700 : manors, seneschals and outstanding events in its history | Collins, John T. | Article in Journal | | 1945 |
| Unpublished Cork inquisitions in the Royal Irish Academy | Collins, John T. | Article in Journal | | 1960 |