| RHP6406 | Ordnance Survey 1/2500 plan (Ross-shire Sheets XCIX. 11, 12.) | [c 1890] |
| RHP11661 | Plan of proposed road from the Point of Fortrose to the junction with the Beauly Road near Conon Bridge. | 1814 |
| RHP12730 | Architectural plan of Tore Inn | 1881 |
| RHP12731 | Architectural plan of farm house at Kilcoy | 1879 |
| RHP12732 | Architectural drawings of a farm house at Kilcoy | May 1880 |
| RHP12733 | Architectural plans of Ryefield Steading | [late 19th century]. |
| RHP12734 | Architectural sectional and roof plan [of Ryefield Steading] | [late 19th century]. |
| RHP12735 | Architectural plan of cottage at Ryefield | [late 19th century]. |
| RHP12736 | Architectural plan of proposed additions to Ryefield Farm Steading | 1886 |
| RHP12737 | Architectural sketch plan of proposed additions to Ryefield Farm Steading | c 1886 |
| RHP12738 | Architectural plan of proposed improvements to Ryefield Farm House | 1886 |
| RHP12739 | Architectural plan of cottage for grieve at Kilcoy Mains | 1882 |
| RHP12740 | Architectural plan of cottage on Kilcoy estate | [late 19th century]. |
| RHP38311/5 | L.M.S. Railway, Northern Section: Gradient profiles, stations etc | 1937 |
| RHP41634 | Plans of sites of church and manse [at Newton] relative to feu [from Redcastle Estate] | 1948 |
| RHP49495 | Plan of lands of Redcastle, Ross and Cromarty | Aug 1824 |
| RHP78849 | Ordnance Survey 6 inch plan (Ross and Cromarty, sheet LXXXIX.SW) marked to show farm boundaries | [1944-1955] |
| RHP78850 | Ordnance Survey 6 inch plan (Ross and Cromarty, sheet LXXXIX.SE) marked to show farm boundaries | [1944-1955] |
| RHP78851 | Ordnance Survey 6 inch plan (Ross and Cromarty, sheet C.NW) marked to show farm boundaries | [1944-1955] |
| RHP78852 | Ordnance Survey 6 inch plan (Ross and Cromarty, sheet C.NE) marked to show farm boundaries | [1944-1955] |
| RHP78853 | Ordnance Survey 6 inch plan (Ross and Cromarty, sheet C.SW) marked to show farm boundaries | [1944-1955] |
| RHP78854 | Ordnance Survey 6 inch plan (Ross and Cromarty, sheet C.SE) marked to show farm boundaries | [1944-1955] |
| RHP79302 | Ordnance Survey 6 inch plan (Ross and Cromarty, sheet LXXXVIII) marked to show farm boundaries | [1944-1955] |
| RHP79312 | Ordnance Survey 6 inch plan (Ross and Cromarty, sheet XCIX) marked to show farm boundaries | [1944-1955] |
| RHP131590 | Weight diagram showing elevation, plan and sections of bridge carrying Kilcoy Road, Redcastle over Fortrose Branch Railway at Redcastle Station (London, Midland and Scottish Railways) | c 1933 |
| RHP131591 | Weight diagram showing elevation, plan and sections of bridge carrying Tore/Kessock Road (B862) over Fortrose Branch Railway at Allangrange Station (London, Midland and Scottish Railways) | c 1933 |
| RHP143400/8/5 | Ordnance Survey 6 inch plan, Inverness-shire; Ross and Cromarty, Sheet NH 54 NE | 1960s-1970s |
| RHP143400/8/9 | Ordnance Survey 6 inch plan, Ross and Cromarty, Sheet NH 55 SE | 1960s-1970s |
| RHP143400/8/16 | Ordnance Survey 6 inch plan, Inverness-shire; Ross and Cromarty, Sheet NH 64 NW | 1960s-1970s |