| A rebel R.I.C. constable from Kerry | O'Sullivan, Donal J. | Article in Journal | | 2007 |
| An expert's view of mill stones | O'Sullivan, Donal J. | Article in Journal | | 2004 |
| Church of St. John the Evangelist, Ashe Street, Tralee | O'Sullivan, Donal J. | Monograph or Collective Volume | | 2001 |
| Fr. John Crowley : padre of the desert | O'Sullivan, Donal J. | Article in Journal | | 2001 |
| John L. Sullivan, world boxing champion : his connection with Abbeydorney | O'Sullivan, Donal J. | Article in Journal | | 2011 |
| John O'Donovan - Commissioner of New Zealand Police | O'Sullivan, Donal J. | Article in Journal | | 2010 |
| Kerry's Tenuous connection with the foundation of the Gaelic Athletic Association | O'Sullivan, Donal J. | Article in Journal | | 2010 |
| Kingston's Mill - a reminiscence of five years spent milling near Rossmore | O'Sullivan, Donal J. | Article in Journal | | 2007 |
| Lord Kenmare's century old hydro station on the Deenagh river gets a new lease of life | O'Sullivan, Donal J. | Article in Journal | | 1999 |
| Obvervations on Michael Collins with an account of his funeral | Collins, John T. | Article in Journal | | 2013 |
| Queen Victoria's record of her visit to Killarney during August 1861 | | Article in Journal | | 1999 |
| Richard "The Boss" Croker | O'Sullivan, Donal J. | Article in Journal | | 2010 |
| The big faction fight at Ballygurteen | O'Sullivan, Donal J. | Article in Journal | | 2009 |
| The Depot : a history of the Garda Síochána Depot at the Phoenix Park, Dublin | O'Sullivan, Donal J. | Monograph or Collective Volume | Navillus Publishing | 2007 |
| The development of policing in Killarney | O'Sullivan, Donal J. | Article in Book | | 2005 |
| The grand tour of Ireland and Kerry's first motoring tourists of a century ago | O'Sullivan, Dónal J. | Article in Journal | | 2003 |
| The Harrington brothers and their Kerry connections | O'Sullivan, Donal J. | Article in Journal | | 2019 |
| The Irish constabularies 1822-1922 : a century of policing in Ireland | O'Sullivan, Donal J. | Monograph or Collective Volume | Brandon | 1999 |
| The saddle and quern stones | O'Sullivan, Donal J. | Article in Journal | | 2002 |
| The Valentia Altazamuth Stone | O'Sullivan, Donal J. | Article in Journal | | 2005 |
| The world's best-known Kerryman, Field-Marchall Horatio Herbert Kitchener | O'Sullivan, Donal J. | Article in Journal | | 2012 |
| Tralee Post Office | O'Sullivan, Donal J. | Article in Journal | | 2006 |