| 3715 | UCC Special Collections & Archives | BL/EP/G143-183 | | Trusts administered by members of the Grehan family:... | Grehan Estate Collection |
| 9865 | UCC Special Collections & Archives | BL/EP/G1493 | 1929 | Research into the MacDonald family: manuscript extra... | Grehan Estate Collection |
| 18380 | University of Galway Archives | G14 | c. 1995 | Bound volume containing catalogue of the manuscripts... | A Catalogue of the manuscripts of Nuala Ní Dhomhnaill |