| "Silva Focluti" | McDonnell, Thomas | Article in Journal | | 1982 |
| Bad day at Ardnaree | McDonnell, Thomas | Article in Journal | | 1986 |
| Fr Patrick Smyth, peacemaker at Eureka | McDonnell, Thomas | Article in Journal | | 1985 |
| From the Mayo book of survey and distribution | McDonnell, Thomas | Article in Journal | | 1987 |
| Local place names in West Wicklow | O'Connor, Michael ; Lennon, John ; McDonnell, Thomas | Article in Journal | | 1938 |
| The coming of the Welshmen to Tirawley | McDonnell, Thomas | Article in Journal | | 1987 |
| Thomas A. Cobden, 1794-1842 : an architect in County Carlow | McDonnell, Thomas | Article in Book | | 2008 |