| RHP3600/2 | Plan of Smailholm Spittal, Roxburghshire | 1816 |
| RHP3600/4 | Note of measurement of farms of Courthill and Smailholm Spittal | 4 Dec 1810 |
| RHP3607 | Plan of Smailholm Spittal, Roxburghshire | 1777 |
| RHP6687 | Copy of plan of the estate of Nenthorn, Berwickshire | 1789 |
| RHP7707 | Architectural drawing of Smailholm parish church, Roxburghshire | Jul 1895 |
| RHP7708 | Architectural drawing of Smailholm parish church, Wigtownshire | Jul 1895 |
| RHP7709 | Architectural drawing of Smailholm parish church, Roxburghshire | 15 Oct 1896 |
| RHP7709/1 | Smailholm parish church, Roxburghshire: ground plan | 15 Oct 1896 |
| RHP7709/2 | Smailholm parish church, Roxburghshire: ground plan | 15 Oct 1896 |
| RHP9357 | Plan of Newton Don Park, Harrietfield, Courthill and Smailholm Spittal | [19th century] |
| RHP9358 | Table of acreages of Newton Don Park, Smailholm Spittal, Edenmouth and adjacent farms | [mid 19th century] |
| RHP14277 | Photostat copy of plan of Morrick Farm | 1795 |
| RHP22071 | Plan of the farm of Sandyknowe | 1839 |
| RHP22530 | Particulars of sale and plan of the estate of Mertoun, the property of the trust estate of Rt. Hon. Lord Polwarth | 1912 |
| RHP49562 | Plan of estate of Newtondon, with table of contents | 1828 |
| RHP49715 | Ordnance Survey 6 inch plan marked to show various farms in Mellarstain district | 1908 |
| RHP49716 | Ordnance Survey 1/2500 plan marked to show lands of East Third and West Third referred to in disposition by Earl of Haddington in favour of Trustees of late Mrs M E Salting | 1908 |
| RHP49752 | Copy Ordnance Survey 6 inch of Mellerstain Estate and surrounding farms | [mid 20th century] |
| RHP49754 | Ordnance Survey 6 inch plan marked to show woodland in vicinity of Mellerstain House referred to in agreement between Forrestry Commission and Earl of Haddington | December 1953 |
| RHP77205 | Ordnance Survey 6 inch plan (Berwickshire, sheet XXVII.SW; Roxburghshire, parts of sheets IV & V) coloured and marked to show types of farming and farm boundaries | [1944-1954] |
| RHP77213 | Ordnance Survey 6 inch plan (Berwickshire, sheet XXX.NE; Roxburghshire, parts of sheets IV & VIII) coloured and marked to show types of farming and farm boundaries | [1944-1954] |
| RHP77215 | Ordnance Survey 6 inch plan (Berwickshire, sheet XXXI.NW; Roxburghshire, sheets IV, V, VIII & IX) coloured and marked to show types of farming and farm boundaries | [1944-1954] |
| RHP77216 | Ordnance Survey 6 inch plan (Berwickshire, sheet XXXI.NE; Roxburghshire, parts of sheets V & IX) coloured and marked to show types of farming and farm boundaries | [1944-1954] |
| RHP77248 | Ordnance Survey 6 inch plan (Berwickshire, sheet XXVI.SE; Roxburghshire, part of sheet IV) coloured and marked to show types of farming and farm boundaries | [1944-1954] |
| RHP79450 | Ordnance Survey 6 inch plan (Roxburghshire, sheet V; Berwickshire, parts of sheets XXVI, XXVII, XXX & XXXI) coloured and marked to show types of farming and farm boundaries | [1944-1955] |
| RHP89954 | Photocopy of plan of estate of Newtondon, incorporating enlarged plan of Newtondon Park, with table of contents | 1828 |
| RHP95786 | Ordnance Survey 6 inch plan (Berwickshire, sheet XXVI.SE; Roxburghshire, part of sheet IV) coloured and marked to show classification of land | [1944-1955] |
| RHP97684 | Ordnance Survey 6 inch plan (Roxburghshire, sheet V; Berwickshire, parts of sheets XXVI, XXVII, XXX & XXXI) coloured and marked to show classification of land | [1944-1954] |
| RHP97688 | Ordnance Survey 6 inch plan (Roxburghshire, sheet IX) coloured to show classification of land | [1944-1954] |