| 5087 | Irish Architectural Archive | 97/84/Box 49 | 1773-1818 | Documents mostly financial in nature. Includes Thoma... | Castletown Papers |
| 4620 | OPW-Maynooth University Archive and Research Centre (OMARC) | Box 49 | 1930-1932 | Folder containing three letters from Teddy, Castle A... | Airfield Archive |
| 3873 | Religious Society of Friends in Ireland Historical Library | Mss Box 49 | 1675-1852 | Jacob Family Letters, folders I-XIII, 1675-1852, 335... | Handlists: Mss Boxes, Pamphlets Boxes, etc. |