| Reference | Title | Date |
| GD3 | Papers of the Montgomerie Family, Earls of Eglinton | c1177-1931 |
| GD3/1 | Montgomerie Family, Earls of Eglinton: Titles | 12th-19th century |
| GD3/1/9 | Lands and Estate of Coilsfield Formerly Belonging to Archibald, Earl of Eglinton and Winton | 1483-1843 |
| GD3/1/9/20 | Bundle 20: Securities over the Lands of Overtown etc | 1637-1677 |