| RHP668 | Architectura drawings of a manse proposed for the parish of Watten, Caithness | 1781 |
| RHP668/1 | Manse proposed for the parish of Watten: plans and elevation | 1781 |
| RHP668/2 | Manse proposed for the parish of Watten: plans and elevation | 1781 |
| RHP668/3 | Manse proposed for the parish of Watten: plans and elevation | 1781 |
| RHP2177 | Sketch plan of the lands of Langergill and others in dispute, Caithness | 1756 |
| RHP3909 | Plan of Bylbster Commonty | 1851 |
| RHP3910/1 | Plan of the lands of Lynegar, Brabster and Watten, Caithness | mid 18th century |
| RHP3910/2 | Explanatory note to plan of the lands of Lynegar, Brabster and Watten, Caithness | mid 18th century |
| RHP6137 | Plan of Druimdubh Commonty, Caithness | 1829 |
| RHP129786-129787 | Drawing showing elevations, plans, sections and details of steelwork for renewal of bridge No 351 between Bower and Watten (The Highland Railway) | 1918 |
| RHP17895 | Plan of the Sutherland and Caithness Railway from Wick to Watten. | 1872 |
| RHP22347 | Sketch plan of Pennyland and adjoining lands | 1803 |
| RHP43575 | Plan of division of Lynegar Commonty. | 1833 |
| RHP43647 | Ordnance Survey 6 inch plan marked to show line of proposed water supply to Watten manse. | 1919 |
| RHP43648 | Architectural plan and section of manse of Watten. | 1920 |
| RHP43649 | 1-2. Architectural plans and sections of manse of Watten. 3. Heritors'answers to architect's report | 1920 |
| RHP43682 | Plan marked to show proposed smallholding scheme and acreage of arable and pasture at West Watten. | 1920 |
| RHP46817 | Ordnance Survey 6 inch plan (No.2) marked to show lands at Watten referred to in petition of Duke of Portland for authority to feu | 2 Mar 1881 |
| RHP78983 | Ordnance Survey 6 inch plan (Caithness, sheet XII) marked to show farm boundaries | [1944-1955] |
| RHP78989 | Ordnance Survey 6 inch plan (Caithness, sheet XVIII) marked to show farm boundaries | [1944-1955] |
| RHP78990 | Ordnance Survey 6 inch plan (Caithness, sheet XIX) marked to show farm boundaries | [1944-1955] |
| RHP79530 | Ordnance Survey 6 inch plan (Caithness, sheet XXII) marked to show farm boundaries: [1944 x 1954] | nd |
| RHP79531 | Ordnance Survey 6 inch plan (Caithness, sheet XXIV) marked to show farm boundaries: [1944 x 1954] | nd |
| RHP79535 | Ordnance Survey 6 inch plan (Caithness, sheet XXVIII) marked to show farm boundaries: [1944 x 1954] | nd |
| RHP81868 | Sketch plan of Toftingall | [1743] |
| RHP81977 | Architectural front elevation of Watten Church proposed to be built | 1781 |
| RHP81978 | Architectural plans and elevation of manse proposed to be built at Watten | [1781] |
| RHP81979-81980 | Architectural plans and elevation of [manse for Watten] | [1781] |
| RHP140041 | Ordnance Survey 6 inch plan (Caithness sheets XV & XIX) | [1893] |
| RHP143000/3/23 | Ordnance Survey 1 inch map (Sheet 110, [Latheron]) | 1877 |