| RHP1672 | Photostat copy of Volume of John Home's survey of Assynt (Vignettes of pastoral pursuits, animals, buildings and ships) | 1774 |
| RHP5232 | Bound plans and sections for piers at Lochinver and Loch Na Claise. | 1905 |
| RHP11598 | Plan of intended road from Lochinver to Portinleik Ferry. | 1793 |
| RHP11667 | Plan of road from Lochinver in Assynt to the proposed Tongue Road at Invershin, with branches to Culkein and Unapool. | c 1812 |
| RHP13249 | Sketch plan of pier at Lochinver: 1891. | 1891 |
| RHP17443 | Multiple Ordnance Survey 1 inch map sheets attached to show Lochinver and Altnaharrow | 1882 |
| RHP34152 | Admiralty chart of west coast from Loch Inver to Loch Broom. (Vignette of view to south of Horse Island) | 1874 |
| RHP34153 | Admiralty chart of Eddrachillis bay and The Glens. (Vignettes of views from Ravens Rock) | 1902 |
| RHP38306 | Ordnance Survey 1/25000 plan marked to show estate boundaries and suitability for afforestation. | 1952 |
| RHP79390 | Ordnance Survey 6 inch plan (Sutherland, sheet XLVIII) marked to show farm boundaries | [1944-1955] |
| RHP79391 | Ordnance Survey 6 inch plan (Sutherland, sheet XLVIIIA) marked to show farm boundaries | [1944-1955] |
| RHP79392 | Ordnance Survey 6 inch plan (Sutherland, sheet XLIX) marked to show farm boundaries | [1944-1955] |
| RHP79393 | Ordnance Survey 6 inch plan (Sutherland, sheet L) marked to show farm boundaries | [1944-1955] |
| RHP79401 | Ordnance Survey 6 inch plan (Sutherland, sheet LVIII) marked to show farm boundaries | [1944-1955] |
| RHP79402 | Ordnance Survey 6 inch plan (Sutherland, sheet LIX) marked to show farm boundaries | [1944-1955] |
| RHP79412 | Ordnance Survey 6 inch plan (Sutherland, sheet LXX) marked to show farm boundaries | [1944-1955] |
| RHP79413 | Ordnance Survey 6 inch plan (Sutherland, sheet LXXI) marked to show farm boundaries | [1944-1955] |
| RHP79414 | Ordnance Survey 6 inch plan (Sutherland, sheet LXXII) marked to show farm boundaries | [1944-1955] |
| RHP79421 | Ordnance Survey 6 inch plan (Sutherland, sheet LXXX) marked to show farm boundaries | [1944-1955] |
| RHP79422 | Ordnance Survey 6 inch plan (Sutherland, sheet LXXXI) marked to show farm boundaries | [1944-1955] |
| RHP79427 | Ordnance Survey 6 inch plan (Sutherland, sheet XCIA) marked to show farm boundaries | [1944-1955] |
| RHP81161 | 1. Plan of lands to be acquired between Lochinver and Loch Assynt Lodge for Invershin-Ledmore-Lochinver road (A837): May 1971
2. Duplicate of no. 1 | May 1971 |
| RHP93953/16 | General plan of Culag Pier, Lochinver | Dec 1954 |
| RHP142305 | Plans of Stoer burial ground extension, Assynt, Sutherland | Jul 1956 |
| RHP142305/1 | Site plan of Stoer burial ground, Sutherland | Jul 1956 |
| RHP142305/2 | Lair plan of Stoer burial ground, Sutherland | Jul 1956 |
| RHP143000/3/14 | Ordnance Survey 1 inch map (Sheet 101, [Ullapool]) | 1882 |
| RHP143000/3/20 | Ordnance Survey 1 inch map (Sheet 107, [Lochinver]) | 1881 |
| RHP143400/4/1 | Ordnance Survey 6 inch plan, Sutherland, Sheet NC 21 SW | 1970s-1980s |