| Historical Sketches of Monaghan, from the earliest records to the Fenian movement | Rushe, Denis Carolan | Monograph or Collective Volume | James Duffy & Co. | 1895 |
| History, antiquities, and present state of the parishes of Ballysadare and Kilvarnet, in the county of Sligo: with notices of the O'Haras, the Coopers, the Percevals, and other local families | O'Rourke, T. | Monograph or Collective Volume | James Duffy and Sons | c. 1870 |
| James Duffy and Catholic nationalism | Loeber, RolfStouthamer-Loeber, Magda | Article in Book | | 2011 |
| James Duffy, the Young Ireland publisher | MacManus, M. J. | Article in Book | | 1945 |
| Lectures on the manuscript materials of ancient Irish history: delivered at the Catholic University of Ireland during the sessions of 1855 and 1856 | O'Curry, Eugene | Monograph or Collective Volume | James Duffy | 1861 |
| Obituary. James Duffy, 1861-1934 | S., A.W. | Article in Journal | | 1935 |
| Patrick Pearse and the lost republican ideal | Murphy, Brian P. | Monograph or Collective Volume | James Duffy & Co. | 1991 |
| Speeches at the bar and in the senate / by the Right Honourable Wm. Conyngham, lord Plunket, lord high Chancellor of Ireland | Conyngham, William, Lord Plunket | Monograph or Collective Volume | James Duffy | 1856 |
| The great Irish famine | O'Rourke, John | Monograph or Collective Volume | Veritas | 1989 |
| The resurrection of Hungary, a parallel for Ireland | Griffith, Arthur | Monograph or Collective Volume | James Duffy & Co., M.H. Gill & Son, Sealy, Bryers & Walker | 1904 |
| The splendid years : recollections as told to Edward Kenny | Nic Shiubhlaigh, Máire, 1883-1958 | Monograph or Collective Volume | James Duffy & Co. | 1955 |
| Tugaimís onóir do chuimhne James Duffy | Ó h-Annluain, Ruaidhrí | Article in Journal | | 1945 |