| RHP660 | Plan of roads at Millisle in dispute between the Earl of Galloway and Hugh Hathorn, Wigtownshire | [c1780] |
| RHP660/1 | Plan of roads at Millisle in dispute between the Earl of Galloway and Hugh Hathorn, Wigtownshire | [c1780] |
| RHP660/2 | Plan of roads at Millisle in dispute between the Earl of Galloway and Hugh Hathorn, Wigtownshire | [c1780] |
| RHP662 | Plan of the extent of the coast over which the burgh of Whithorn has a right of exacting customs and duties, Wigtownshire | 1780 |
| RHP3731 | Ordnance Survey 6 inch plan (Wigtownshire, Sheet 30), marked around Cruggleton: 1850. | 1850 |
| RHP4091 | Plan of the runrig lands of Balcrosh and Kevans | [1774] |
| RHP4327 | Plan of Galloway House estate: 1929. | 1929 |
| RHP4568 | Architectural plan of steading at Culkae, Sorbie, Wigtownshire | 1844 |
| RHP4740 | Plan of Ravenstone, Glasserton, Wigtownshire. | c 1850 |
| RHP4767 | Sectional plan of march burn betwixt Culnoag and Stonehouse from hedge at westside of Culnoag meadow to bank near Stonehouse barn, and also of Airies mill-lead. | 1861 |
| RHP4914 | Architectural drawing of buildings on Doonhill farm, Sorbie, Wigtownshire | 19th century |
| RHP4915 | Architectural plan of threshing-mill and strawhouse at Culnoag, Sorbie, Wigtownshire | 19th century |
| RHP4924 | Architectural plan of buildings on farm of Stonehouse, Sorbie, Wigtownshire. | 19th century |
| RHP4933 | Architectural drawing of buildings on Culnoag farm, Sorbie, Wigtownshire | 19th century |
| RHP6487 | Sketch plan of the runrig lands of Kevans and Balcrosh and the farm of Cruggleton and Ridge Croft. | c 1775 |
| RHP7038 | Architectural drawing of Sorbie parish church, Wigtownshire | Apr 1912 |
| RHP7039 | Architectural drawing of Sorbie manse, Wigtownshire | [c 1929] |
| RHP13104 | 1. Pictorial sketch of Garlieston Harbour
2. Details thereof. | 1892 |
| RHP15341 | Bound plans and sections of extension of Wigtownshire Railway to Garliestown Harbour and of a level crossing at Broughton Skeog: 1876 | 1876 |
| 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 |
| RHP23071 | Architectural plan of proposed adaptations to basement floor of Galloway House Auxiliary Hospital. | 1939 |
| RHP23072 | Architectural plan of proposed adaptations to ground floor of Galloway House Auxiliary Hospital. | 1939 |
| RHP23073 | Architectural plan of proposed adaptations to ground floor of Galloway House Auxiliary Hospital. | 1939 |
| RHP23074 | Architectural plan of proposed adaptations to ground floor of Galloway House Auxiliary Hospital. | 1939 |
| RHP23499/58 | Photocopy of plan of Innerwell and Eggerness. | 1875 |
| RHP24708 | Architectural detail plan of mouldings for pulpit of chapel at Galloway House. | 12 Jan 1849 |
| RHP24709 | Architectural plans and sections (2) of No. 1 Lodge for Earl of Galloway [? at Galloway House] | 1841 |
| RHP24712 | Plan of layout of garden at [Galloway House] | Mid 19th century |
| RHP24713 | Plan (partly architectural) of entrance to [Galloway House] | Mid 19th century |
| RHP24714 | Architectural sketch elevation of ornamental urns [? for garden area at Galloway House]. (Damaged). | Mid 19th century |
| RHP30090 | 1. Ordnance Survey 6 inch plan (Wigtownshire, sheet 30) marked to show proposed excavations at Garlieston Harbour.
2. Sectional plan of proposed excavations at Garlieston Harbour: 1865
3. Copy of Edinburgh Gazette
4. Copy of Galloway Advertiser and Wigtownshire Free Press, 23 November 1865
5. Copy of Galloway Advertiser and Wigtownshire Free Press, 30 November 1865. | 1865 |
| 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 |
| RHP32208 | Blueprint section and elevation (2 copies) of water tank at Creetown and Sorbie Stations (London Midland and Scottish Railway). | 1925 |
| RHP32209 | Architectural plan, section and elevation of water tank at Creetown and Sorbie Stations (London Midland and Scottish Railway). | 1925 |
| RHP32286 | Plan of land required at level crossing near Garliestown by Portpatrick and Wigtownshire Joint Railways. | 1889 |
| RHP32287 | Sectional plan of Garliestown branch of Portpatrick and Wigtownshire Joint Railways showing site of accident. | 1894 |
| RHP32288-32289 | Plans of extension of platform at Garliestown Station (Portpatrick and Wigtownshire Joint Railways). | 1896 |
| RHP32290 | Plan of extension of platform at Garliestown Station (Portpatrick and Wigtownshire Joint Railways). | 1897 |
| RHP32427 | Plan of site for store at Sorbie Station (London Midland and Scottish Railway). | 1923 |
| RHP32428 | Plan of loco water supply at Sorbie Station from Dowalton Burn (London Midland and Scottish Railway). | 1924 |
| RHP32429 | Plan of extension of loading bank at Sorbie Station (London Midland and Scottish Railway). | 1926 |
| RHP32430 | Plan and elevation of substructure of water tank at Sorbie Station (London Midland and Scottish Railway). | 1926 |
| RHP32483 | Plan of signalling arrangements at Millisle Station (Portpatrick and Wigtownshire Joint Railways). | 1905 |
| RHP32484 | Plan of alterations at Millisle Station (Portpatrick and Wigtownshire Joint Railways). | 1906 |
| RHP32485-32486 | Plans and sections of alterations at Millisle Station (Portpatrick and Wigtownshire Joint Railways). | 1908 |
| RHP38311/39 | L.M.S. Railway, Northern Section: Gradient profiles, stations etc. | 1932 |
| RHP41071 | Plan of Sheriff Lands, The Cults and Baltier owned by Sir Andrew Agnew, bt., with table of contents. | 17 Sep 1875 |
| RHP42540 | Plan of shore line of Lochnaw Estate and foreshore claimed | [early 20th century] |
| 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 |
| RHP75256 | Ordnance Survey 6 inch plan (Wigtownshire, sheet XXVI.NE) marked to show farm boundaries | [1944-1955] |
| RHP75257 | Ordnance Survey 6 inch plan (Wigtownshire, sheet XXVI.SW) marked to show farm boundaries | [1944-1955] |
| RHP75258 | Ordnance Survey 6 inch plan (Wigtownshire, sheet XXVI.SE) marked to show farm boundaries | [1944-1955] |
| RHP75259 | Ordnance Survey 6 inch plan (Wigtownshire, sheet XXVII.NW) marked to show farm boundaries | [1944-1955] |
| RHP75260 | Ordnance Survey 6 inch plan (Wigtownshire, sheet XXVII.SW) marked to show farm boundaries | [1944-1955] |
| 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] |
| RHP75271 | Ordnance Survey 6 inch plan (Wigtownshire, sheet XXXII.NW) marked to show farm boundaries | [1944-1955] |
| RHP75272 | Ordnance Survey 6 inch plan (Wigtownshire, sheet XXXII.SW) marked to show farm boundaries | [1944-1955] |
| RHP88787 | Plan of Blair, Sorbie, Wigtownshire | 1739 |
| RHP88788 | Plan of tracks of the road leading from Millisle to the road between Whithorn and Wigtown, Sorbie, Wigtownshire | [c 1780] |
| RHP88789 | Plan of farms of High and Low Blair, Waulkmill and Stellage crofts, Sorbie, Wigtownshire | 7 Oct 1779 |
| RHP88792 | Plan of road proposed to be repaired on High Blair at village of Sorbie, Wigtownshire) | Jun 1816 |
| RHP93229 | Plan (contract drawing) for construction of Whithorn Branch between 12m. 30chs. and 15m. 50chs. [Sorbie to Millisle] [Wigtownshire Railway] | 3 Oct 1873 |
| RHP97457 | Ordnance Survey 6 inch plan (Wigtownshire, sheet XXVI.NE) coloured and marked to show classification of land | [1944-1954] |
| RHP97458 | Ordnance Survey 6 inch plan (Wigtownshire, sheet XXVI.SW) coloured to show classification of land | [1944-1954] |
| RHP97459 | Ordnance Survey 6 inch plan (Wigtownshire, sheet XXVI.SE) coloured to show classification of land | [1944-1954] |
| 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] |
| RHP97469 | Ordnance Survey 6 inch plan (Wigtownshire, sheet XXXII.NW) coloured and marked to show classification of land | [1944-1954] |
| RHP143000/1/2 | Ordnance Survey 1 inch map (Sheet 2, [Whithorn]) | 1856 |