| 'Eminently calculated for the public good' : the Dublin Society's statistical surveys | Benson, Charles | Article in Book | Royal Dublin Society | 2009 |
| An index to Dublin Historical Record : general index to vols 1 to LVI, March 1938 to Autume 2003 | Barrow, George LennoxMulligan, Fergus | Monograph or Collective Volume | Old Dublin Society | 2004 |
| Auguri : for Mary Kelleher | | Monograph or Collective Volume | Royal Dublin Society | 2009 |
| Captain Myles Keogh, the 7th Cavalry and the battle of Little Big Horn, 140 years ago | Mulligan, Fergus | Article in Journal | | 2017 |
| One hundred and fifty years of Irish railways | Mulligan, Fergus | Monograph or Collective Volume | Appletree Press | 1983 |
| One hundred and fifty years of Irish railways | Mulligan, Fergus | Monograph or Collective Volume | Appletree Press | 1990 |
| The founders of the Royal Dublin Society : with illustrations of their houses and a list of members who joined the Dublin Society between 1731 and 1800 | Kelleher, MaryMulligan, Fergus | Monograph or Collective Volume | Royal Dublin Society | 2005 |
| The founders of the Royal Dublin Society : with illustrations of their houses and a list of members who joined the Dublin Society between 1731 and 1800 | Kelleher, MaryMulligan, Fergus | Monograph or Collective Volume | Royal Dublin Society | 2005 |
| The Trinity year : a portrait of Trinity College Dublin | Mulligan, Fergus, 1952- | Monograph or Collective Volume | Gill & Macmillan | 2009 |
| William Dargan (1799-1867), railway contractor | Mulligan, Fergus | Thesis | | 2003 |
| William Dargan : an honourable life, 1799 - 1867 | Mulligan, Fergus | Monograph or Collective Volume | Lilliput | 2013 |
| William Dargan, the 1853 Dublin Exhibition and the National Gallery of Ireland | Mulligan, Fergus | Article in Journal | | 2014 |
| William Dargan: a great Carlowman | Mulligan, Fergus | Article in Journal | | 2015 |