| Collection | GB 0231 University of Aberdeen, Special Collections |
| Level | Item |
| Ref No | MS 3759/1/40/2 |
| Alt Ref No | B1/98 |
| Title | Borthwick Castle: plan of keep |
| Date | April 1921 |
| Extent | 1 item |
| Description | Borthwick Castle, plan of keep and surrounding fortifications, signed Thomas Ross, April 1921. |
| Access Status | Open |
| Physical Description | Ink,pencil and colour wash. |