| A survey of the Vatican Archives and of its medieval holdings | Boyle, Leonard E. | Monograph or Collective Volume | Pontifical Institute of Mediaeval Studies | 1972 |
| Conflict over the rectory of Cinel Luachain during the fifteenth century | Boyle, Leonard E.Earley, Joseph E. | Article in Journal | | 1999 |
| Fr Joseph Mullooly, O.P. (1812-1880) | Boyle, Leonard E. | Article in Journal | | 1980 |
| Manuscripts and incunabula in the library of San Clemente | Boyle, Leonard E. | Article in Book | | 1978 |
| Opening address | Boyle, Leonard E. | Article in Book | | 1996 |