| RHP28850 | Volume containing 16 plans, sections and elevations of bridges on the Peebles and Dolphinton branches of the North British Railway. | 1894 |
| RHP38311/28 | L.M.S. Railway, Northern Section: Gradient profiles, stations etc. | 1932 |
| RHP40039 | 1. Bound plans and sections of the proposed Carnwath and West Linton Railway from Carnwath to Leadburn. 2. Book of reference 3. Standing orders of the House of Lords 4-5. Duplicates of nos. 1-2 | 1845 |
| RHP43483 | 1. Bound plans and sections (with book of reference bound in) of Caledonian Railway branch from Carstairs Junction to Dolphinton [Station]. 2. Duplicate of no 1 (without book of reference) | 1862 |
| RHP76644 | Ordnance Survey 6 inch plan (Lanarkshire, sheet XXVIII.NW; Peeblesshire, parts of sheets VII & VIII) marked to show farm boundary | [1944-1945] |
| RHP76646 | Farm boundaries (Lanarkshire, sheet XXVII.NE; Peeblesshire, part of sheet VII) marked to show farm boundaries | [1944-1945] |
| RHP76771 | Ordnance Survey 6 inch plan (Lanarkshire, sheet XXI.SE; Peeblesshire, parts of sheets IV & VII) marked to show farm boundaries | [1944-1945] |
| RHP76795 | Ordnance Survey 6 inch plan (Lanarkshire, sheet XXVII.SE) marked to show farm boundaries | [1944-1945] |
| RHP77133 | Ordnance Survey 6 inch plan (Peeblesshire, sheet VII.NE; Lanarkshire, parts of sheets XXI, XXVII & XXVIII) coloured and marked to show types of farming and farm boundaries | [1944-1954] |
| RHP82145 | Photocopy of architectural plan, elevations and sections of steading at the Green, Dolphinton, the property of J. O. Mackenzie | Mar 1890 |
| RHP82147 | Photocopy of architectural plan, elevations and section of cottage at Lochhead on Dolphinton Estate | Jul 1883 |
| RHP82148 | Photocopy of architectural plan and sections of Dolphinton water house | 9 Jul 1891 |
| RHP82149 | Photocopy of plan of drains at Dolphinton House | Jun 1911 |
| RHP82150 | Photocopy of copy plan of estate of Newholm, the property of Charles Cuningham, with table of contents | 1849 |
| RHP82152 | Photocopy of architectural pictorial front elevation and section of Dolphinton House proposed additions for J. O. Mackenzie | Jun 1880 |
| RHP82153 | Photocopy of sketch plan of drains at Meadowhead | [Early 20th century] |
| RHP82154 | Photocopy of blueprint block plan of Meadowhead house, steading, sawmill, etc | 27 Jan 1930 |
| RHP82155 | Photocopy of plan of ground from beyond Haughhead to Ingraston proposed to be taken off the property of John Ord Mackenzie for Caledonian Railway, Carstairs and Dolphinton branch | 1865 |
| RHP92283 | Abstract table of contents of Dolphinton Estate (plans I-XI) and table of contents of Dolphinton Parks and Policy | [1875] |
| RHP92283-92294 | Portfolio of plans (11, from Ordnance Survey) of Dolphinton Estate, originally numbered I-XI of which IV is missing and to which one other has been added | 1875-1889 |
| RHP92284 | Plan (from Ordnance Survey) of Townhead or West Third (plan I), with table of contents: [1875], annotated 1887-8 | [1875]-1888 |
| RHP92285 | Plan (from Ordnance Survey) of Roberton Mains (plan II), with table of contents: [1875], annotated 1889 | [1875]-1889 |
| RHP92286 | Plan (from Ordnance Survey) of Haugh Head Farm (plan III), with table of contents: [1875], annotated 1888-9 | [1875]-1889 |
| RHP92287 | Plan (from Ordnance Survey) of Dolphinton Policy and Parks (plan V): [1875], annotated 1888 | [1875]-1888 |
| RHP92288 | Plan (from Ordnance Survey) of Westmill Farm (plan VI), with table of contents: [1875], annotated 1888 | [1875]-1888 |
| RHP92289 | Plan (from Ordnance Survey) of Meadowhead Farm (plan VII), with table of contents: [1875], annotated 1888 | [1875]-1888 |
| RHP92290 | Plan of Kirkhouse Farm, Dolphinton, Lanarkshire | 1875-1889 |
| RHP92291 | Plan (from Ordnance Survey) of Kirkhouse Farm (no number), with table of contents: [1875], annotated to 1889 | [1875]-1889 |
| RHP92292 | Plan (from Ordnance Survey) of Townfoot Farm (plan IX), with table of contents | [1875] |
| RHP92293 | Plan (from Ordnance Survey) of Bank Farm (plan X), with table of contents: [1875], annotated to 1877 | [1875]-1877 |
| RHP97070 | Ordnance Survey 6 inch plan (Lanarkshire, sheet XXI.SE; Peeblesshire, parts of sheets IV & VII) coloured to show classification of land | [1944-1954] |
| RHP97089 | Ordnance Survey 6 inch plan (Lanarkshire, sheet XXVII.NE; Peeblesshire, part of sheet VII) coloured to show classification of land | [1944-1954] |
| RHP97091 | Ordnance Survey 6 inch plan (Lanarkshire, sheet XXVII.SE) coloured to show classification of land | [1944-1954] |
| RHP97092 | Ordnance Survey 6 inch plan (Lanarkshire, sheet XXVIII.NW; Peeblesshire, parts of sheets VII & VIII) coloured to show classification of land | [1944-1954] |
| RHP99166/2 | Scroll working plan no. 2 | Apr 1864 |
| RHP99166/4 | Scroll working section no. 2 | 1864 |
| RHP99169/27 | Bridge no. 28 | 1864 |
| RHP99169/28 | Bridge no. 29 | 1864 |
| RHP99169/29 | Bridge no. 30 | 1864 |
| RHP99169/30 | Culvert no. 31 | 1864 |