| RHP662 | Plan of the extent of the coast over which the burgh of Whithorn has a right of exacting customs and duties, Wigtownshire | 1780 |
| RHP663 | Plan of the orchard of the Isle of Whithorn, Wigtownshire | 1780 |
| RHP3728 | Ordnance Survey 6 inch plan (Wigtownshire, Sheet 34): 1850. | 1850 |
| RHP4502 | A plan of the Mains near Whithorn belonging to Rt Hon Earl of Galloway | 1812 |
| RHP4514 | Plan of Low Ersock. | 1830 |
| RHP4524 | Plan of lands of Falhar (Philhar) and mill lands of Portyerrock. | 1828 |
| RHP4526 | Plan of Corwar Outon, Burgess Outon, part of Baillewhirr, Chapel Outon, Gallows Outon and part of Broughton Skeog. | 1842 |
| RHP4550 | Plan of lands of Craig and Dowish: copied in 1841. | 1841 |
| RHP4556 | Plan of farms of Craig and Dowish. | 1818 |
| RHP4592/1 | Plan of farm of Nether Balcray, Whithorn, Wigtownshire | 1830 |
| RHP4592/2 | Plan of Upper Balcray and mill lands of Ersock, Whithorn, Wigtownshire | 1830 |
| RHP4594 | Architectural drawing of dwellinghouse proposed to be built on the farm of Little Isle, Whithorn, Wigtownshire | 1848 |
| RHP4595 | Sketch plan of farm of Burgess Outton. | 1814 |
| RHP4634 | N(2) Plan of farm of Bailliewhirr and Outon Corwar (Corwar Outtoun) exhibiting the new march through these farms betwixt the Earl of Galloway and Captain John Hathorne. | 1795 |
| RHP4657 | Plan of farm of Mains of Whithorn, Wigtownshire | 1830 |
| RHP4658 | Plan of farm of Portyerrock. | 1828 |
| RHP4659 | Plan of farm of Stannock. | 1828 |
| RHP4660 | Plan of farm of Cairnhead. | 1828 |
| RHP4663 | Plan of the farm of Mains of Whithorn, Wigtownshire | 1830 |
| RHP4669 | Plan of part of Broughton Mains, Whithorn, Wigtownshire | 1841 |
| RHP4670 | Plan of proposed tilefield at Broughton Mains, Whithorn, Wigtownshire . | 1841 |
| RHP4671 | Plan of tilefield at Broughton Mains, Whithorn, Wigtownshire | 1841 |
| RHP4672 | Plan of proposed tilefield at Broughton Mains, Whithorn, Wigtownshire | 1841 |
| RHP4748 | Plan of the lands of Arbrack and part of Cauldside. | 1855 |
| RHP4818 | Plan of lands in Whithorn and Glasserton parishes belonging to Viscount Dalrymple. | 1909 |
| RHP4824 | Tracing plan [from Ordnance Survey] of Toddly. | 1911 |
| RHP4826 | Plan of Cauldside. | 1920 |
| RHP4828 | Tracing plan of area around Bailliewhirr, being Whithorn shooting let. | 1921 |
| RHP4885 | Tracing plan of the lands of Craig and Dowish. | 19th century |
| RHP4889 | Tracing plan of Bailliewhirr. | 19th century |
| RHP7710 | Architectural drawing of Whithorn parish church, Wigtownshire | 28 May 1913 |
| RHP7711 | Architectural drawing of Whithorn parish church, Wigtownshire | 17 Mar 1915 |
| RHP8807 | Plan of land near Whithorn required from H.G. Murray Stewart for the Wigtownshire Railway | 1876 |
| RHP8808 | Tracing plan of land near WHITHORN disponed by H.G. Murray Stewart to the Wigtownshire Railway Company: 1878 | 1878 |
| RHP8809 | Plan of land near Broughton Skeog required from H.G. Murray Stewart for the Wigtownshire Railway | 1876 |
| RHP8810 | Tracing plan of land near Broughton Sreog required from H.G. Murray Stewart for the Wigtownshire Railway | 1876 |
| RHP8811 | Tracing sketch plan of the [Wigtownshire Railway] line between Broughton Mains and Gallows Outon | [1876] |
| RHP13109 | 1. Sketch plan of harbour and bay at Isle of Whithorn
2. Explanatory letter. | 1892 |
| RHP15341 | Bound plans and sections of extension of Wigtownshire Railway to Garliestown Harbour and of a level crossing at Broughton Skeog: 1876 | 1876 |
| RHP19102 | Plan, section and elevation of bridge near [Whithorn] (Wigtownshire Railway). | 1873 |
| RHP22342 | Ordnance Survey 6 inch plan (Wigtownshire, sheet 30) (2 copies) with coastline marked between Cruggleton Lodge and Port Allan relative to process Sir Andrew Agnew v Lord Advocate | 1872 |
| RHP23499/3 | Photocopy of plan of Stennock (Stannock). | 1828 |
| RHP23499/4 | Photocopy of plan of Portyerrock. | 1828 |
| RHP23499/5 | Photocopy of plan of Cairnhead. | 1828 |
| RHP23499/6 | Photocopy of plan of Falhar (Philhar) and mill lands of Portyerrock. | 1828 |
| RHP23499/7 | Photocopy of plan of High and Low Balcray (Upper and Nether Balcrey). | 1830 |
| RHP23499/8 | Photocopy of plan of Cauldside and Low (Laigh) Ersock. | 1830 |
| RHP23499/9 | Photocopy of plan of [Low] Mains. | 1830 |
| RHP23499/10 | Photocopy of plan of High (Little) Mains. | 1830 |
| RHP23499/11 | Photocopy of plan of Enoch. | 1829 |
| RHP23499/12 | Photocopy of plan of Catyans (Cattans) and Broompark. | 1829 |
| RHP23499/13 | Photocopy of plan of Meikle Fey, etc. | 1829 |
| RHP23499/14 | Photocopy of plan of North Bishopton. | 1829 |
| RHP23499/15 | Photocopy of plan of Craigs and Dowish. | 1829 |
| RHP24676 | Plan of part of Bishopton [post 1895] | 1895 |
| RHP24677 | Plan of part of Bishopton: [post 1895] | 1895 |
| RHP24678 | Plan of part of Bishopton: [post 1895] | 1895 |
| RHP24679 | Plan of Borrowmoss [post 1895]. | 1895 |
| RHP24680 | Plan of Broadfield [post 1895]. | 1895 |
| RHP24681 | Plan of Broompark and Meiklefey [post 1895]. | 1895 |
| RHP24684 | Plan of Carslae [post 1895]. | 1895 |
| RHP24687 | Plan of Common Park [post 1895]. | 1895 |
| RHP24688 | Plan of part of Common Park [post 1895]. | 1895 |
| RHP24689 | Plan of Creamery lands, Whithorn [post 1895]. | 1895 |
| RHP24692 | Plan of Enoch [post 1895]. | 1895 |
| RHP24694 | Plan of Hillhead [post 1895]. | 1895 |
| 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 |
| RHP30105 | Plans of Wigtownshire Railway branch to Garlieston Harbour | 1876 |
| RHP32443-32444 | Plans of alteration of junction at Whithorn Station (Portpatrick and Wigtownshire Joint Railways). | 1889 |
| RHP32445 | Plan and section of railway bridge near Whithorn (PPortpatrick and Wigtownshire Joint Railways). | 1889 |
| RHP32446 | Details of pipe valves for tank at Whithorn (Portpatrick and Wigtownshire Joint Railways). | 1893 |
| RHP32447 | Plan of pump and boiler at Whithorn (Portpatrick and Wigtownshire Joint Railways). | 1893 |
| RHP32448 | Architectural plan and elevation of station buildings at Whithorn (Portpatrick and Wigtownshire Joint Railways). | 1902 |
| RHP32449 | Blueprint plan of whin and sand water filter not accepted at Whithorn (Portpatrick and Wigtownshire Joint Railways). | 1905 |
| RHP32450 | Plan of signalling arrangements at Whithorn (Portpatrick and Wigtownshire Joint Railways). | 1905 |
| RHP32451 | Plan of Whithorn Station, showing site of oil tank (Portpatrick and Wigtownshire Joint Railways). | 1914 |
| RHP32452 | Plan of Whithorn Station (Portpatrick and Wigtownshire Joint Railways). | Early 20th century |
| RHP32453 | Plan of stores, and siding to be slewed at Whithorn Station (London Midland and Scottish Railway). | 1924 |
| RHP32454 | Architectural plan of store for cattle feeding stuffs at Whithorn Station (London Midland and Scottish Railway). | 1924 |
| RHP32455-32456 | Plans and sections of raising of loading bank at Whithorn Station (London Midland and Scottish Railway). | 1926 |
| RHP32457-32458 | Plans and sections of additional loading bank facilities at Whithorn Station (London Midland and Scottish Railway). | 1927 |
| RHP32459 | Plan of Whithorn Station (Portpatrick and Wigtownshire Joint Railways). | 1888 |
| RHP32463-32464 | Blueprint plans of signalling arrangements at Wigtown (Portpatrick and Wigtownshire Joint Railways). | 1907 |
| RHP35266 | Plan of the farm of Gallow's - Outon, enlarged from the Ordnance Survey, with key | 1874 |
| RHP35269 | Plan of the lands of Bushes Croft and Reiffer (Riffert) Park | [19th century] |
| RHP35275 | Plan of the farm of Chapel Outon, with key to contents | 1874 |
| RHP38311/39 | L.M.S. Railway, Northern Section: Gradient profiles, stations etc. | 1932 |
| RHP40042 | 1. Bound plan and sections of an intended railway from the Wilsontown, Morningside and Coltness Railway to the lands of Wilsontown and Climpy. 2. Book of reference 3-4. Duplicates of nos. 1-2 | 1845 |
| RHP42253 | Chart of harbour of Isle of Whithorn, showing elevations of buildings. | 1818 |
| RHP44275 | 1. Ordnance Survey 6 inch plan marked round Cruggleton and Palmallet to show farms and land, belonging to Sir Andrew Agnew. 2. Duplicate of no 1, also marked | 1872 |
| RHP75268 | Ordnance Survey 6 inch plan (Wigtownshire, sheet XXXI.NW) marked to show farm boundaries | [1944-1955] |
| RHP75269 | Ordnance Survey 6 inch plan (Wigtownshire, sheet XXXI.NE) marked to show farm boundaries | [1944-1955] |
| RHP75270 | Ordnance Survey 6 inch plan (Wigtownshire, sheet XXXI.SW) marked to show farm boundaries | [1944-1955] |
| RHP75272 | Ordnance Survey 6 inch plan (Wigtownshire, sheet XXXII.SW) marked to show farm boundaries | [1944-1955] |
| RHP75277 | Ordnance Survey 6 inch plan (Wigtownshire, sheet XXXV.NW) marked to show farm boundaries | [1944-1955] |
| RHP75278 | Ordnance Survey 6 inch plan (Wigtownshire, sheet XXXV.NE) marked to show farm boundaries | [1944-1955] |
| RHP75280 | Ordnance Survey 6 inch plan (Wigtownshire, sheet XXXV.SE) marked to show farm boundaries | [1944-1955] |
| RHP75281 | Ordnance Survey 6 inch plan (Wigtownshire, sheet XXXVI.NW) marked to show farm boundaries | [1944-1955] |
| RHP75282 | Ordnance Survey 6 inch plan (Wigtownshire, sheet XXXVI.SW) marked to show farm boundaries | [1944-1955] |
| RHP85625 | Plan of Whithorn Glebe and Churchyard, Wigtownshire | Oct 1892 |
| RHP85626 | Architectural drawing of Whithorn Priory, Wigtownshire | 20 Mar 1894 |
| RHP88790 | Plan of Dinnans, Whithorn, Wigtownshire | Jun 1807 |
| RHP88791 | Plan of Glove Hills, Whithorn, Wigtownshire | 10 May 1800 |
| RHP88793 | Plan of farm of Laigh Skeog, Whithorn, Wigtownshire | 31 Oct 1817 |
| RHP88794 | Plan of harbour and bay of Isle of Whithorn showing soundings, with suggestions for making the bay a harbour of refuge | 28 Dec 1839 |
| RHP88795 | Architectural drawing of [Castlewigg, Whithorn, Wigtownshire] | [c 1800] |
| RHP88796 | Architectural drawing of [?alternative design for Castlewigg, Whithorn, Wigtownshire] | [c 1800] |
| RHP88797 | Architectural drawing of [design for Castlewigg, Whithorn, Wigtownshire] | [c 1810] |
| RHP88798 | Architectural drawing of [Castlewigg, Whithorn, Wigtownshire] | [c 1810] |
| RHP88799 | Architectural drawing of [Castlewigg, Whithorn, Wigtownshire] | [c 1810] |
| RHP88800 | Architectural drawing of [Castlewigg, Whithorn, Wigtownshire] | [c 1810] |
| RHP88801 | Architectural drawing of stables at Castlewigg, Whithorn, Wigtownshire | 20 Oct 1860 |
| RHP88802 | Plan of [?part of policies at Castlewigg, Whithorn, Wigtownshire] | [c 1807] |
| RHP92850 | Ordnance Survey 6 inch plan (Wigtown, sheet XXXV.SE) marked to show grass paths on Tonderghie Estate let to defender, with field names, produced in causa Charles Arbuthnot McLean v. Matthew Marshall | [c 1925] |
| RHP97467 | Ordnance Survey 6 inch plan (Wigtownshire, sheet XXXI.NE) coloured and marked to show classification of land | [1944-1954] |
| RHP97468 | Ordnance Survey 6 inch plan (Wigtownshire, sheet XXXI.SE) coloured and marked to show classification of land | [1944-1954] |
| RHP97473 | Ordnance Survey 6 inch plan (Wigtownshire, sheet XXXV.NE) coloured and marked to show classification of land | [1944-1954] |
| RHP140321 | Ordnance Survey 1/2500 plan (Wigtownshire, sheet ?) | 1948 |
| RHP143000/1/2 | Ordnance Survey 1 inch map (Sheet 2, [Whithorn]) | 1856 |