| Arthur O'Leary, the outlaw | Collins, J. T. | Article in Journal | | 1949 |
| Church government in the south of Ireland, A.D. 1471 to 1484 | Collins, J. T. | Article in Journal | | 1957 |
| County Cork families, 1630-1635 | Collins, J. T. | Article in Journal | | 1961 |
| Dr Robert Emmet's Cork residence | Collins, J. T. | Article in Journal | | 1946 |
| Extracts from the Caulfield MSS, University College, Cork | Collins, J. T. | Article in Journal | | 1961 |
| Fiants of Queen Elizabeth relating to the city and county of Cork | Collins, J. T. | Article in Journal | | 1936 |
| Fiants of Queen Elizabeth relating to the city and county of Cork | | Article in Journal | | 1938 |
| Fiants of Queen Elizabeth relating to the city and county of Cork | | Article in Journal | | 1942 |
| Fiants of Queen Elizabeth relating to the City and County of Cork | | Article in Journal | | 1939 |
| Fiants of Queen Elizabeth relating to the county of Cork. Extracted from the Reports of the Deputy-Keeper of Public Records in Ireland (nos. 11 to 20), issued from 1879 to 1888 | Collins, J. T. | Article in Journal | | 1942 |
| Legal documents relating to Fermoy, Castlelyons, and other parts of east Cork | Collins, J. T. | Article in Journal | | 1947 |
| Sir William Hull's losses in 1641 : historical notes | Collins, J. T. | Article in Journal | | 1947 |
| The Book of Lismore | Collins, J. T. | Article in Journal | | 1947 |
| The Longs of Muskerry and Kinalea | Collins, J. T. | Article in Journal | | 1946 |
| The manor of Móra | Collins, J. T. | Article in Book | | 1947 |
| The maternal ancestry of Daniel O'Connell | Collins, J. T. | Article in Journal | | 1949 |
| The O'Heas of south-west Cork | Collins, J. T. | Article in Journal | | 1946 |
| The population of Ireland under Cromwellian rule | Collins, J. T. | Article in Journal | | 1942 |
| When Cork city declared war : with notes on some McCarthys of west Cork | Collins, J. T. | Article in Journal | | 1947 |