| RHP338 | Plan of Dunskey Estate, Wigtownshire | Mar 1804 |
| RHP3729 | Ordnance Survey 6 inch plan (Wigtownshire, Sheet 15), marked: 1866. | 1866 |
| RHP4501/1-3 | Plan of Kilhilt estate, Portpatrick, Wigtownshire | 1796 |
| RHP4607 | Plan of Kilhilt estate, Portpatrick, Wigtownshire | 1796 |
| RHP4653 | Plan of Colfin: 1845, 1847. | 1847 |
| RHP4655/1-2 | Plan of village of Portpatrick, Wigtownshire. | 1840 |
| RHP4764 | Plan of Craigenquarroch. | 1860 |
| RHP4765 | Plan of Spittal | 1860 |
| RHP4838 | Plans (5) of the water supply (Penwhirn Burn scheme) from Cairn Pat tank. | 1955 |
| RHP4844 | Ordnance Survey 1/2500 plan (Wigtownshire, XVII.7) | 1901 |
| RHP4846 | Ordnance Survey 6 inch plan (Wigtownshire, XVII) | 1909 |
| RHP4988 | Tracing plan of Cairn Pat Hill and part of Colfin. | [19th century] |
| RHP5511 | Ordnance Survey 6 inch plans of Wigtownshire marked in respect of Dunskey estate, Wigtownshire | 1896 |
| RHP5511/1 | Ordnance Survey 6 inch plan (Wigtownshire, Sheet XVII. N.W) | 1896 |
| RHP5511/2 | Ordnance Survey 6 inch plan (Wigtownshire [new series], XVII. S.W) | 1896 |
| RHP5511/3 | Ordnance Survey 6 inch plan (Wigtownshire, Sheet XVI. S.E) | 1896 |
| RHP5511/4 | Ordnance Survey 6 inch plan (Wigtownshire, [New Series] Sheet XXII. N.E) | 1896 |
| RHP5511/5 | Ordnance Survey 6 inch plan (Wigtownshire, [New Series] Sheet XXII. N.W) | 1896 |
| RHP5511/6 | Ordnance Survey 6 inch plan (Wigtownshire, Sheet XXII. S.W) | 1896 |
| RHP5511/7 | Ordnance Survey 6 inch plan (Wigtownshire, [New Series] Sheet XXII. S.E) | 1896 |
| RHP13105 | Sketch plan of Portpatrick Habour:1891 | 1891 |
| RHP16710 | Architectural section and elevation (2 copies, both damaged) of terminal shed and booking office at Portpatrick (Portpatrick Railway). | 1859 |
| RHP16711 | Architectural section and elevation of tank house at Portpatrick Station (Portpatrick Railway). | 1859 |
| RHP16712 | Architectural plan, section and elevation of goods shed at Portpatrick Station (Portpatrick Railway). | 1859 |
| RHP16713 | Architectural plan, section and elevation of engine shed and bothy at Portpatrick Station (Portpatrick Railway). | 1859 |
| RHP17027 | Plan of proposed station arrangements at Portpatrick Station (Portpatrick Railway). | 1861 |
| RHP17109 | Plan of Portpatrick Station showing the abandoned harbour branch (Portpatrick and Wigtownshire Joint Committee). | 1891 |
| RHP18625 | Plan, section and elevation of gates and fencing near Portpatrick Station (Portpatrick Railway). | 1859 |
| RHP18998 | Plan and section of chairs and keys for the permanent way of the Portpatrick section of the Portpatrick Railway. | 1859 |
| RHP19216 | Plan and section of culvert No 7 over burn near peg on the Portpatrick section of the Portpatrick Railway. | 1859 |
| RHP19217 | Plan, section and elevation of bridge No 2 Over diversion of turnpike road near peg 959 on the Portpatrick section of the Portpatrick Railway. | 1859 |
| RHP19221 | Plan, section and elevation of bridge No 15 over road near peg 1053 on the Portpatrick section of the Portpatrick Railway. | 1859 |
| RHP19222 | Plan, section and elevation of bridge No 1 under road near peg 950 and of bridges Nos 21-22 on the Portpatrick section of the Portpatrick Railway. | 1859 |
| RHP25350 | Ordnance Survey 6 inch plan (Wigtownshire, sheet 16) marked to show Portpatrick branches of the Caledonian Railway from Stranraer to Little Genoch and to beyond High Duchra. | 1866 |
| RHP25472 | Ordnance Survey plan marked to show the Portpatrick and Wigtownshire Joint Railway. | 1885 |
| RHP30085 | 1. Plan showing Portpatrick Electric Lighting scheme.
2. Excerpt from Edinburgh Gazette
3. Excerpt from Galloway Advertiser and Wigtownshire Free Press.
4. Provisional order | 1903 |
| RHP32252-32253 | Plans of alterations at Colfin Station (Portpatrick and Wigtownshire Joint Railways). | 1919 |
| RHP32414 | Plan of Portpatrick showing ground feued by Portpatrick Railway Company to the Admiralty, Wigtownshire | 1860 |
| RHP32415 | Plan of ground at Portpatrick surplus to the requirements of Portpatrick and Wigtownshire Joint Railways. | 1901 |
| RHP32416 | Plan of Portpatrick Station (Portpatrick and Wigtownshire Joint Railways). | 1902 |
| RHP32417 | Plan and section of sewer at Portpatrick. | 1903 |
| RHP32418 | Plan of line of fence at Portpatrick Station (Portpatrick and Wigtownshire Joint Railways). | 1905 |
| RHP32419-32420 | Plans of extension of platform and signal arrangements at Portpatrick (Portpatrick and Wigtownshire Joint Railways). | 1907 |
| RHP32421 | Blueprint plan of signal arrangements and alteration of siding at Portpatrick (Portpatrick and Wigtownshire Joint Railways). | 1907 |
| RHP32422 | Plan of new signals and other alterations at Portpatrick (Portpatrick and Wigtownshire Joint Railways). | 1908 |
| RHP32423 | Plan of Portpatrick Station, showing slewing of rails (Portpatrick and Wigtownshire Joint Railways). | 1908 |
| RHP32424 | Architectural section and elevation of signal cabin at Portpatrick (Portpatrick and Wigtownshire Joint Railways). | 1908 |
| RHP32425 | Plan of site of ganger's house in Portpatrick (London Midland and Scottish Railway). | 1926 |
| RHP32426 | Plan of land at Portpatrick disponed by London Midland and Scottish Railway. | 1929 |
| RHP32492 | Elevation and section of railing on Quarroch Bridge (Portpatrick and Wigtownshire Joint Railways). | Early 20th century |
| RHP48699 | Plan showing surplus ground at Portpatrick (Portpatrick and Wigtownshire Joint Railways) | 6 August 1901 |
| RHP48703 | Plan showing proposed new carriage sidings at Stranraer with inset gradient profile of line between Colfin and Castle Kennedy (London Midland and Scottish Railway) | 2 July 1942 |
| RHP48734 | Architectural plan, elevation and section of stationmaster's house at Colfin showing proposed additions (Portpatrick and Wigtownshire Joint Railways) | 20 May 1904 |
| RHP48735 | Architectural plan, elevation and section of stationmaster's house at Colfin showing proposed additions (Portpatrick and Wigtownshire Joint Railways) | 20 May 1904 |
| RHP75221 | Ordnance Survey 6 inch plan (Wigtownshire, sheet XVI.SE) marked to show farm boundaries | [1944-1955] |
| RHP75222 | Ordnance Survey 6 inch plan (Wigtownshire, sheet XVII.NW) marked to show farm boundaries | [1944-1955] |
| RHP75223 | Ordnance Survey 6 inch plan (Wigtownshire, sheet XVII.NE) marked to show farm boundaries | [1944-1955] |
| RHP75224 | Ordnance Survey 6 inch plan (Wigtownshire, sheet XVII.SW) marked to show farm boundaries | [1944-1955] |
| RHP75225 | Ordnance Survey 6 inch plan (Wigtownshire, sheet XVII.SE) marked to show farm boundaries | [1944-1955] |
| RHP75242 | Ordnance Survey 6 inch plan (Wigtownshire, sheet XXII.NW) marked to a show farm boundaries | [1944-1955] |
| RHP75243 | Ordnance Survey 6 inch plan (Wigtownshire, sheet XXII.NE) marked to show farm boundaries | [1944-1955] |
| RHP84704 | Architectural plans, elevations and section, with site plan, of proposed additions and improvements to stationmaster's house at Colfin (London Midland and Scottish Railway) | [c 1923] |
| RHP84725 | Architectural plans, elevations and section of proposed alterations and improvements to station house at Portpatrick (London Midland and Scottish Railway) | [c 1923] |
| RHP86528 | Architectural plan, elevations and section of stationmaster's house at Colfin (Portpatrick and Wigtownshire Joint Railways) | [c 1923] |
| RHP93953/48 | General plan of Portpatrick Harbour | Mar 1957 |
| RHP94484 | Ordnance Survey 1/2500 plan (Wigtownshire, Sheet XXII ..) | [1923] |
| RHP94577 | Tracing of architectural plans, elevations and sections of Lydia Cottage, Dinvin Street, Portpatrick | Feb 1926 |
| RHP97425 | Ordnance Survey 6 inch plan (Wigtownshire, sheet XVI.SE) coloured and marked to show classification of land | [1944-1954] |
| RHP97426 | Ordnance Survey 6 inch plan (Wigtownshire, sheet XVII.NW) coloured and marked to show classification of land | [1944-1954] |
| RHP97427 | Ordnance Survey 6 inch plan (Wigtownshire, sheet XVII.NE) coloured and marked to show classification of land | [1944-1954] |
| RHP97428 | Ordnance Survey 6 inch plan (Wigtownshire, sheet XVII.SW) coloured and marked to show classification of land | [1944-1954] |
| RHP97429 | Ordnance Survey 6 inch plan (Wigtownshire, sheet XVII.SE) coloured and marked to show classification of land | [1944-1954] |
| RHP97443 | Ordnance Survey 6 inch plan (Wigtownshire, sheet XXII.NW) coloured and marked to show classification of land | [1944-1954] |
| RHP97444 | Ordnance Survey 6 inch plan (Wigtownshire, sheet XXII.NE) coloured and marked to show classification of land | [1944-1954] |
| RHP99035/12 | Scroll working plan no. 12 | Sep 1858 |
| RHP99036/12 | Scroll working sections no. 12 | Jun 1858 |
| RHP99039/6 | Portpatrick Station | Jun 1858 |
| RHP99039/7 | Portpatrick Harbour Station | 1861 |
| RHP99039/8 | Portpatrick Harbour Station | 1861 |
| RHP99066 | Architectural drawings of viaduct over Piltanton Burn: Portpatrick Railway | 1858 |
| RHP99067 | Architectural drawings of the Portpatrick Railway: Portpatrick Harbour | 1860-1861 |
| RHP99067/1 | Tidal basin | c 1860 |
| RHP99067/2 | Tidal basin | 1860 |
| RHP99067/3 | Tidal basin | c 1860 |
| RHP99067/4 | Tidal basin | c 1860 |
| RHP99067/5 | Plan for sections | 1861 |
| RHP99067/6 | Sections no. 1 | Apr 1861 |
| RHP99067/7 | Sections no. 2 | Apr 1861 |
| RHP99067/8 | Sections no. 3 | Apr 1861 |
| RHP99067/9 | Wharf wall | Oct 1861 |
| RHP99068 | Plans of the Portpatrick Railway: Portpatrick contract | 1860-1862 |
| RHP99068/1 | Colfin Station | 29 May 1862 |
| RHP99068/2 | Portpatrick | Aug 1860 |
| RHP99068/3 | Portpatrick | 1860 |
| RHP99303 | Plan of proposed Drumaslig Station, Portpatrick Railway | Jun 1858 |