| RHP1708 | Plan of Loch Ryan made from 1839 Admiralty chart, Wigtownshire | 1841 |
| RHP1709 | Plan of oyster fishings claimed by Mr. Maitland in Luce Bay, Wigtownshire | [c.1860] |
| RHP2562 | Photocopy of Chart of Loch Ryan from the Admiralty Plan by Commander C. G. Robinson in 1839 | 1841 |
| RHP4647 | Plan of lands of Kirklandhill at Wigtown. | 1842 |
| RHP7802 | Architectural drawing of Wigtown parish church, Wigtownshire | 11 Apr 1853 |
| RHP7803 | Architectural drawing of Wigtown parish church, Wigtownshire | 15 Feb 1878 |
| RHP7804 | Plan of Wigtown manse and part of Glebe, Wigtownshire | Oct 1868 |
| RHP7805 | Plan of Wigtown manse garden and elevation of wall, Wigtownshire | 1869 |
| RHP7806 | Architectural drawing of Wigtown churchyard, Wigtownshire | May 1873 |
| RHP7807 | Plan of Mr Cowper's ground adjacent to Wigtown glebe, Wigtownshire | 12 May 1896 |
| RHP7808 | Architectural drawing of Wigtown parish church, Wigtownshire | 15 Dec 1914 |
| RHP7809 | Architectural drawing of Wigtown parish church, Wigtownshire | 23 Feb 1915 |
| RHP7810 | Architectural drawing of Wigtown parish church, Wigtownshire | 1914 |
| RHP7811 | Plan of Wigtown manse, Wigtownshire | c 1868 |
| RHP21824 | Architectural plans of ground floor of Wigtown prison | 1843 |
| RHP21825 | Architectural plans of ground floor of Wigtown prison | 1843 |
| RHP21826 | Architectural plans of second floor of Wigtown prison | 1843 |
| RHP21827 | Architectural plans of second floor of Wigtown prison | 1843 |
| RHP21828 | Architectural elevation of Wigtown prison | 1843 |
| RHP21829 | Architectural plan and elevation of boundary walls of Wigtown prison | 1843 |
| RHP21830 | Architectural plan of flues and elevation of Wigtown prison | 1844 |
| RHP21831 | Architectural plan of ground floor and flues of Wigtown prison | 1844 |
| RHP21832 | Architectural plan of ground floor of Wigtown prison | 1844 |
| RHP21833 | Architectural plans of second floor and roof of Wigtown prison | 1844 |
| RHP21834 | Architectural plans of second floor and roof of Wigtown prison | 1844 |
| RHP21835 | Architectural ground plan and elevation of boundary walls of Wigtown prison | 1844 |
| RHP21836 | Architectural elevations of Wigtown prison | 1844 |
| RHP21837 | Architectural elevations of Wigtown prison | 1844 |
| RHP21838 | Architectural elevations of Wigtown prison | 1844 |
| RHP21839 | Architectural sectional plans of Wigtown prison | 1844 |
| RHP21840 | Architectural sectional plans of Wigtown prison | 1844 |
| RHP21841 | Architectural sectional plans of Wigtown prison | 1844 |
| RHP21842 | Architectural plan of ground and second floors of Wigtown prison | 1846 |
| RHP21843 | Architectural plan of roof of Wigtown prison | 1846 |
| RHP21844 | Architectural elevations of Wigtown prison | 1846 |
| RHP21845 | Architectural elevations of Wigtown prison | 1846 |
| RHP21846 | Architectural sectional plan of Wigtown prison | 1846 |
| RHP21847 | Architectural ground plan and elevation of boundary walls of Wigtown prison | 1846 |
| RHP21848 | Architectural detail of cell window [in Wigtown prison?] | Mid 19th century |
| RHP23499/16 | Photocopy of plan of Maidland. | 1829 |
| RHP23499/17 | Photocopy of plan of Maidland showing line of railroad, probably based on RHP23499/16. | 1863-1872 |
| RHP23499/18 | Photocopy of plan of fields near Wigtown. | 1829 |
| RHP23499/19 | Photocopy of plan of Broadfield. | 1829 |
| RHP23499/20 | Photocopy of plan of Cotland. | 1829 |
| RHP23499/21 | Photocopy of plan of Newmilns (Newmills). | 1829 |
| RHP23499/22 | Photocopy of plan of Kirvennie. | 1829 |
| RHP23499/23 | Photocopy of plan of Clauchrie. | 1829 |
| RHP23499/24 | Photocopy of plan of Wood of Auchleand. | 1871 |
| RHP23499/25 | Photocopy of plan of Auchleand (Auchland). | 1833 |
| RHP23499/26 | Photocopy of plan of Cairn House (Cairnhouse). | 1833 |
| RHP23499/27 | Photocopy of plan of Drove Park. | 1829 |
| RHP23499/28 | Photocopy of plan of Culquhirk (Kilwhirk). | 1848 |
| RHP23499/29 | Photocopy of plan of East Kirkland. | 1848 |
| RHP23499/30 | Photocopy of plan of West Kirkland. | 1848 |
| RHP23499/31 | Photocopy of plan of Borrowmoss (Boroughmoss). | 1829 |
| RHP23499/32 | Photocopy of plan of Little Borrowmoss (Boroughmoss). | 1829 |
| RHP24671 | Plan of Auchleand: [post 1895]. | 1895 |
| RHP24672 | Plan of Wood of Auchleand [post 1895]. | 1895 |
| RHP24682 | Plan of Cairn House [post 1895]. | 1895 |
| RHP24685 | Plan of Carslae Croft [post 1895]. | 1895 |
| RHP24690 | Plan of Culquirk [post 1895]. | 1895 |
| RHP24691 | Plan of Drove Park [post 1895]. | 1895 |
| RHP24693 | Plan of Glenturk Moor Head [post 1895]. | 1895 |
| RHP24695 | Plan of West Kirkland [post 1895]. | 1895 |
| RHP24696 | Plan of Kirkvennie [post 1895]. | 1895 |
| RHP24698 | Plan of Newmilns [post 1895]. | 1895 |
| RHP24702 | Architectural plans, elevations and sections and detail plans of new parish church at Wigtown | c 1853 |
| RHP24710 | Architectural drawing of church for seamen, etc. [?at Wigtown]. | 1846 |
| RHP25227 | Ordnance Survey 6 inch plan (Wigtownshire, sheet 13) marked to show the [Wigtownshire Railway] from Newton Stewart Station to beyond Causewayend Bridge. | 1872 |
| RHP25228 | Ordnance Survey 6 inch plan (Wigtownshire, sheet 20) marked to show the [Wigtownshire Railway] from near [Causewayend Bridge] to Kirkinner. | 1872 |
| RHP30083 | Plan of layout of proposed cemetery at Wigtown. | 20th century |
| RHP30086 | Architectural plans, elevation and detail of Old Red Lion Inn, Wigtown. | 1936-1937 |
| RHP30087 | Ordnance Survey 1/1056 plan marked at Wigtown, produced for the defence in McGill jury trial. | 1895 |
| RHP30089 | Ordnance Survey 6 inch plan (Wigtownshire, sheet 20) marked to show boundaries of royal burgh of Wigtown. | 1893 |
| RHP30095 | Series of copy Ordnance Survey 1 inch maps (4) marked to show boundaries, etc at Newton Stewart, Wigtown and Kirkcowan. | 1965 |
| RHP30096 | Series of copy Ordnance Survey 6 inch plans (5) marked to show boundaries, etc. at Kirkcowan, Newton Stewart, Wigtown and Kirkinner. | 1957 |
| RHP30103 | 1. Bound plans and sections of Wigtownshire Railway from Newton Stewart to Whithorn and tramway to Garlieston.
2. Book of reference
3. Parliamentary notice and Act.
4. Duplicate of No.1 (plans and sections only) | 1871 |
| RHP32460 | Plan of Wigtown Station (Portpatrick and Wigtownshire Joint Railways). | 1889 |
| RHP32461 | Plan and section of cart weighbridge at Wigtown Station (Portpatrick and Wigtownshire Joint Railways). | 1899 |
| RHP32462 | Plan of signalling arrangements at Wigtown (Portpatrick and Wigtownshire Joint Railways) | 1905 |
| RHP32465 | Plan of line at Wigtown Station of Portpatrick and Wigtownshire Joint Railways. | 1907 |
| RHP32466 | Plan and section of drain crossing bridge at Wigtown Station (Portpatrick and Wigtownshire Joint Railways). | 1907 |
| RHP32467 | Plan of Wigtown Station showing drains (Portpatrick and Wigtownshire Joint Railways). | 1909 |
| RHP32468 | Plan of site of oil tank and pump house at Wigtown Station (Portpatrick and Wigtownshire Joint Railways). | 1913 |
| RHP32469 | Plan of property at Carslae Crossing acquired by Portpatrick and Wigtownshire Joint Railways. | 1914 |
| RHP32470 | Plan of alterations to goods yard at Wigtown (Portpatrick and Wigtownshire Joint Railways). | 1919 |
| RHP32471 | Plan of Wigtown Station (London Midland and Scottish Railway). | 1925 |
| RHP32472 | Plan of access roads to Wigtown Station (London Midland and Scottish Railway). | 1926 |
| RHP32529-32530 | Plans, elevations and section of Bladnoch Viaduct (London Midland and Scottish Railway). | 1939 |
| RHP38311/39 | L.M.S. Railway, Northern Section: Gradient profiles, stations etc. | 1932 |
| RHP42770 | Plan of area bounded by Wigtown, Newton Strwart and Glenluce showing roads and line of Portpatrick Railway. | April 1869 |
| RHP75218 | Ordnance Survey 6 inch plan (Wigtownshire, sheet XV.SW) marked to show farm boundaries | [1944-1955] |
| RHP75219 | Ordnance Survey 6 inch plan (Wigtownshire, sheet XV.SE) marked to show farm boundaries | [1944-1955] |
| RHP75235 | Ordnance Survey 6 inch plan (Wigtownshire, sheet XX.NE) marked to show farm boundaries | [1944-1955] |
| RHP75237 | Ordnance Survey 6 inch plan (Wigtownshire, sheet XX.SE) marked to show farm boundaries | [1944-1955] |
| RHP75238 | Ordnance Survey 6 inch plan (Wigtownshire, sheet XXI.NW) marked to show farm boundaries | [1944-1955] |
| RHP75239 | Ordnance Survey 6 inch plan (Wigtownshire, sheet XXI.NE) marked to show farm boundaries | [1944-1955] |
| RHP75240 | Ordnance Survey 6 inch plan (Wigtownshire, sheet XXI.SW) marked to show farm boundaries | [1944-1955] |
| RHP75241 | Ordnance Survey 6 inch plan (Wigtownshire, sheet XXI.SE) marked to show farm boundaries | [1944-1955] |
| RHP84715 | Architectural plans, elevations and section, with site plan, of proposed additions and improvements to stationmaster's house at Wigtown (London Midland and Scottish Railway) | [c 1923] |
| RHP84739 | Architectural plan, elevations and section, with site plan, of proposed alterations and improvements to Carslae crossing house (London Midland and Scottish Railway) | [c 1923] |
| RHP84751 | Architectural plans, elevations and section, with site plan, of proposed additions and improvements to stationmaster's house at Wigtown (London Midland and Scottish Railway) | [c 1923] |
| RHP84757 | Architectural plans, elevations and section, with site plan, of proposed additions and improvements to stationmaster's house at Wigtown (London Midland and Scottish Railway) | [c 1923] |
| RHP84777-84778 | Architectural plans, elevations and sections, with site plan, of proposed alterations and improvements to Carslae crossing house (London Midland and Scottish Railway) | [c 1923] |
| RHP97422 | Ordnance Survey 6 inch plan (Wigtownshire, sheet XV.SW) coloured to show classification of land | [1944-1954] |
| RHP97423 | Ordnance Survey 6 inch plan (Wigtownshire, sheet XV.SE) coloured to show classification of land | [1944-1954] |
| RHP97437 | Ordnance Survey 6 inch plan (Wigtownshire, sheet XX.NE) coloured and marked to show classification of land | [1944-1954] |
| RHP97439 | Ordnance Survey 6 inch plan (Wigtownshire, sheet XX.SE) coloured to show classification of land | [1944-1954] |
| RHP97440 | Ordnance Survey 6 inch plan (Wigtownshire, sheet XXI.NW) coloured and marked to show classification of land | [1944-1954] |
| RHP97441 | Ordnance Survey 6 inch plan (Wigtownshire, sheet XXI.NE) coloured and marked to show classification of land | [1944-1954] |
| RHP97442 | Ordnance Survey 6 inch plan (Wigtownshire, sheet XXI.SW) coloured to show classification of land | [1944-1954] |
| RHP140322 | Bound plans of water works | Oct 1929 |
| RHP140323 | Ordnance Survey 1 inch map (Wigtown, sheet 4) | [1929] |
| RHP140564 | Plans of lands belonging to the Earl of Galloway | 1834-1884 |
| RHP140564/1 | Plan of Baldoon Mains | 1848 |
| RHP141239 | Architectural drawing of farm house, Cutts | 10 Mar 1847 |
| RHP141246 | Architectural drawing of house in [North Milmain, Honeykirk],Wigtownshire | Mar 1848 |