| RHP4106 | Plan and section of the Dornoch Light Railway at the Mound, Golspie, Sutherland | c 1900 |
| RHP5178 | Architectural sketch plan supposedly of dairy at Dunrobin. | [19th century] |
| RHP11603 | Plan of intended road from Portenleik Ferry at the head of the Dornoch Firth to Dunrobin Castle (continued to Dunbeath in Caithness) | 1794 |
| RHP11655 | Plan of piers for Littleferry and Creich. | 1808 |
| RHP11656 | Plan of the different roads leading from Rhives to Bonar Ferry. | 1808 |
| RHP11682 | Plan of the Sutherland Coast Road from Drummuie (Drumbuy of Rhives) to the Ord of Caithness. | Early 19th century |
| RHP11693 | Plan of intended road from Golspie to Dunbeath. | Late 18th century |
| RHP11718 | Plan of bridge and sluice-openings in Strathfleet Mound | 1832 |
| RHP15031 | Bound plans and sections of the Mound, Embo and Dornoch Light Railway | 1896 |
| RHP17452 | Plan of the Sutherland Railway from [Pittentrail Mills] to [Golspie]. | 1865 |
| RHP17575 | Plan of the Sutherland Railway from Kirkton to Morvich: [1865 or post] | 1865 |
| RHP18030 | Bound plans and sections of the Mound, Embo and Dornoch Light Railway. | 1896 |
| RHP18224 | Plan of station at The Mound (Highland Railway). | 1901 |
| RHP38303 | Ordnance Survey 1 inch map marked to show area of proposed afforestation survey. | nd |
| RHP38311/5 | L.M.S. Railway, Northern Section: Gradient profiles, stations etc | 1937 |
| RHP49100 | Book of reference to plans of diversion of Sutherland Railway near Golspie and Dunrobin Castle, road crossings near Toroboll and at Pittentrail Mills, and alteration of levels at Fleet Mound | 1865 |
| RHP79432 | Ordnance Survey 6 inch plan (Sutherland, sheet XCVI) marked to show farm boundaries | [1944-1955] |
| RHP79433 | Ordnance Survey 6 inch plan (Sutherland, sheet XCVII) marked to show farm boundaries | [1944-1955] |
| RHP79439 | Ordnance Survey 6 inch plan (Sutherland, sheet CV) marked to show farm boundaries | [1944-1955] |
| RHP79440 | Ordnance Survey 6 inch plan (Sutherland, sheet CVI) marked to show farm boundaries | [1944-1955] |
| RHP79443 | Ordnance Survey 6 inch plan (Sutherland, sheet CX) marked to show farm boundaries | [1944-1955] |
| RHP84148 | Architectural plans, elevations and sections of proposed alterations and additions to crossing keeper's house at The Mound (London Midland and Scottish Railway) | 28 Sep 1937 |
| RHP84561 | Architectural plans, elevations and section, with site plan, of proposed alterations and additions to crossing keeper's house at The Mound (London Midland and Scottish Railway) | [c 1923] |
| RHP93953/26 | General plan and sections of Golspie Pier | 2 Jun 1948 |
| RHP97747 | Ordnance Survey 6 inch plan (Sutherland, sheet XCVI) marked to show classification of land | [1944-1954] |
| RHP97749 | Ordnance Survey 6 inch plan (Sutherland, sheet CV) marked to show classification of land | [1944-1954] |
| RHP126553 | Hand coloured drawing showing elevations, plans, sections and details of steelwork for new bridge carrying Public Road at The Mound. (London Midland and Scottish Railway) | 1923-1947 |
| RHP130709 | Elevation, plan and sections of bridge under public road near Golspie Station (Sutherland Railway Extension) | c 1865 |
| RHP131643 | Weight diagram showing elevation, plan and section of bridge carrying Public Road (A88) over railway at The Mound Station (London, Midland and Scottish Railway) | c 1933 |
| RHP131644 | Weight diagram showing elevation, plan and section of bridge carrying Public Road (A88) over railway at 84 miles 10 chains at Golspie Station (London, Midland and Scottish Railway) | c 1933 |
| RHP143400/4/3 | Ordnance Survey 6 inch plan, Sutherland, Sheet NC 80 NW | 1970s-1980s |
| RHP143400/4/5 | Ordnance Survey 6 inch plan, Sutherland, Sheet NC 80 SE | 1970s-1980s |
| RHP143400/8/31 | Ordnance Survey 6 inch plan, Sutherland, Sheet NH 79 NE | 1960s-1970s |
| RHP143400/8/44 | Ordnance Survey 6 inch plan, Sutherland, Sheet NH 89 NW | 1960s-1970s |