| RHP1905/2 | Part of map of Scotland and Islands | 1750 |
| RHP2927 | Bound Ordnance Survey 6 inch plans (7) marked to show claim of Mr. and Mrs. A. Carnegie to salmon fishings on the River Oykell, Kyle of Sutherland, Dornoch Firth, River Shin etc.: 1914 | 1914 |
| RHP2952 | Bound Ordnance Survey 1 inch maps of the northern part of the county of Sutherland | 1912 |
| RHP2973 | Johnston's map of Ross and Cromarty and Sutherland showing railways | |
| RHP3353 | Particulars of Sale and Plan of Estates of Cambusmore, Rovie, Dornoch, Lairg and Dalchork, Shinness, Loth and West Helmsdale and Helmsdale and Navidale, belonging to the Duke of Sutherland | 1919 |
| RHP6574 | Plan of steamer routes on West Highland Railway, Inverness-shire | [1888] |
| RHP6967 | Admiralty chart of the Dornoch Firth: 1845, corrected to 1867 | 1845-1867 |
| RHP8718 | Ordnance Survey 1/3 inch index map. Electoral divisions. Sutherland | 1889 |
| RHP12285/3 | Sheet 3: Caithness, Sutherland, Ross & Cromarty (Mainland) | 1 Feb 1967 |
| RHP15017 | Volume of plans and sections of the Sutherland Railway from Ardgay to Brora | 1864 |
| RHP18075 | Volume of plans and sections of the Sutherland Railway from Ardgay to Brora. | 1864 |
| RHP27207 | Ordnance Survey plan marked to show various lines of the London Midland and Scottish Railway in the counties of Ross and Cromarty, Sutherland, Caithness with reference to the Scottish Highland Electricity (Extension) Special Order. | 1937 |
| RHP34155 | Admiralty chart of north coast from Cape Wrath to Glannan Isles, including parts of North Minch and Flannans. | 1901 |
| RHP34160 | Admiralty chart of north coast from Thurso Bay to North Minch. (Vignettes of north coast from Sisters to Cape Wrath and from Griam Beg to Cape Wrath) | 1900 |
| RHP34171 | Admiralty chart of coasts of Caithness and Sutherland, Orkney and Shetland, with insets of Hillswick, Balta Sound, Scalloway, Lerwick, Pierowall, Eynhallow, North Ronaldsay Firth, Hoy Sound, Kirkwall, Deer Sound, Pentland Firth, Scrabster Road, Wick and Loch Eriboll. | 1905 |
| RHP36482 | Plans of branch lines on the [Highland Railway] | 20th century |
| RHP36482/1 | Front cover of plans of branch lines on the [Highland Railway] | 20th century |
| RHP36482/2 | Plan of Fochaber branch line on the [Highland Railway] | 20th century |
| RHP36482/3 | Plan of the Burghead branch line on the [Highland Railway] | 20th century |
| RHP36482/4 | Plan of the Burghead Harbour branch line on the [Highland Railway] | 20th century |
| RHP36482/5 | Plan of the Hopeman branch line on the [Highland Railway] | 20th century |
| RHP36482/6 | Plan of the Aultmore branch line on the [Highland Railway] | 20th century |
| RHP36482/7 | Plan of the Redcastle branch line on the [Highland Railway] | 20th century |
| RHP36482/8 | Plan of the Allangrange branch line on the [Highland Railway] | 20th century |
| RHP36482/9 | Plan of the Munlochy branch line on the [Highland Railway] | 20th century |
| RHP36482/10 | Plan of the Avoch branch line on the [Highland Railway] | 20th century |
| RHP36482/11 | Plan of the Fortrose branch line on the [Highland Railway] | 20th century |
| RHP36482/12 | Plan of the Strathpeffer branch line on the [Highland Railway] | 20th century |
| RHP36482/13 | Plan of the Skelbo branch line on the [Highland Railway] | 20th century |
| RHP36482/14 | Plan of the Embo branch line on the [Highland Railway] | 20th century |
| RHP36482/15 | Plan of the Dornoch branch line on the [Highland Railway] | 20th century |
| RHP38056 | Map of the county of Sutherland | 1831-1833 |
| RHP38128 | Maps of the county of Sutherland | 1831-1853 |
| RHP38311/1 | L.M.S. Railway, Northern Section: Gradient profiles, stations etc. | 1937 |
| RHP41506 | Photocopy of chart of Firth of Dornoch: 1845, corrected to 1895. (Vignette of Dunrobin Castle from eastward) | 1845 |
| RHP41507 | Map of county of Sutherland made on basis of Trigonometrical Survey of Scotland, with additional names and corrections: 1831-2, corrected 1853 and revised 1868. | 1831-1832 |
| RHP43606 | 1. Bound plans and sections of Sutherland and Caithness Railway line from Helmsdale to Wick with branch to Thurso. 2. Book of reference 3. Letter 4-5. Duplicates of nos 1-2 | 1870 |
| RHP43607 | 1. Bound plans and sections of deviations of the Sutherland and Caithness Railway line from Helmsdale to Wick and branch to Thurso. 2. Book of reference | 1875 |
| RHP43609 | 'New Business Map' of Ross and Cromarty, Sutherland and Caithness with plans of burghs inset, showing locations of polling stations and carrying motor and other retail trade advertisements. | 1920 |
| RHP45142 | Gradient profile of main line, Inverness to Wick [London Midland and Scottish Railway]. | 1923 |
| RHP47600 | Bound plans and sections of Sutherland and Caithness Railway deviations and alterations to line between Helmsdale River and Wick | Nov 1875 |
| RHP48665 | Gradient profile and diagram of line: Helmsdale to Tain, with insets of Helmsdale, The Mound Junction and Tain [London Midland and Scottish Railway] | 1923 |
| RHP49099 | Book of reference to plans of Sutherland Railway from Ardgay to Brora | 1864 |
| RHP79446 | Ordnance Survey 6 inch plan (Sutherland, sheet CXIII) marked to show farm boundaries | [1944-1955] |
| RHP82295 | Johnston's map of the county of Sutherland marked to show line of proposed Sutherland Railway from Ardgay to Brora | Nov 1864 |
| RHP82296 | 1. Bound plans and sections of Sutherland Railway from Ardgay to Brora:
2. Book of reference
3-4. Duplicates of nos. 1-2 | Nov 1864 |
| RHP140030 | Map of railway and roads between Brora, Lairg and Fearn | [1911] |
| RHP140786/3 | Sheet 3: Caithness, Sutherland, Ross & Cromarty (Mainland) | 1 Oct 1968 |
| RHP141503/52 | Map of Sutherland | 1823 |
| RHP143000/3/7 | Ordnance Survey 1 inch map (Sheet 94, [Cromarty]) | 1878 |
| RHP143000/3/16 | Ordnance Survey 1 inch map (Sheet 103, [Golspie]) | 1878 |
| RHP143000/3/21 | Ordnance Survey 1 inch map (Sheet 108, [Altnaharrow]) | 1880 |
| RHP143000/3/22 | Ordnance Survey 1 inch map (Sheet 109, [Auchintoul]) | 1878 |
| RHP143351/2/37 | Ordnance Survey 6 inch plan of Scotland: Caithness sheet XXXVII and part of Sutherland sheet LXVII | 1890s |
| RHP143351/3 | Ordnance Survey 6 inch plans of Scotland: Sutherland | 1890s |
| RHP143351/3/1 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet I | 1890s |
| RHP143351/3/2 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet II | 1890s |
| RHP143351/3/3 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet III | 1890s |
| RHP143351/3/4 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet IV | 1890s |
| RHP143351/3/5 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet V | 1890s |
| RHP143351/3/6 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet VI | 1890s |
| RHP143351/3/7 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet VII | 1890s |
| RHP143351/3/8 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet VIII | 1890s |
| RHP143351/3/9 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet IX | 1890s |
| RHP143351/3/10 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet X | 1890s |
| RHP143351/3/11 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet XI | 1890s |
| RHP143351/3/12 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet XII | 1890s |
| RHP143351/3/13 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet XIII | 1890s |
| RHP143351/3/14 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet XIV | 1890s |
| RHP143351/3/15 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet XV | 1890s |
| RHP143351/3/16 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet XVI | 1890s |
| RHP143351/3/17 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet XVII | 1890s |
| RHP143351/3/18 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet XVIII | 1890s |
| RHP143351/3/19 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet XIX | 1890s |
| RHP143351/3/20 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet XX | 1890s |
| RHP143351/3/21 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet XXI | 1890s |
| RHP143351/3/22 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet XXII | 1890s |
| RHP143351/3/23 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet XXIII | 1890s |
| RHP143351/3/24 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet XXIV | 1890s |
| RHP143351/3/25 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet XXV | 1890s |
| RHP143351/3/26 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet XXVI | 1890s |
| RHP143351/3/27 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet XXVII | 1890s |
| RHP143351/3/28 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet XXVIII | 1890s |
| RHP143351/3/29 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet XXIX | 1890s |
| RHP143351/3/30 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet XXX | 1890s |
| RHP143351/3/31 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet XXXI | 1890s |
| RHP143351/3/32 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet XXXII | 1890s |
| RHP143351/3/33 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet XXXIII | 1890s |
| RHP143351/3/34 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet XXXIV | 1890s |
| RHP143351/3/35 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet XXXV | 1890s |
| RHP143351/3/36 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet XXXVI | 1890s |
| RHP143351/3/37 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet XXXVII | 1890s |
| RHP143351/3/38 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet XXXVIII | 1890s |
| RHP143351/3/39 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet XXXIX | 1890s |
| RHP143351/3/40 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet XL | 1890s |
| RHP143351/3/41 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet XLI | 1890s |
| RHP143351/3/42 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet XLII | 1890s |
| RHP143351/3/43 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet XLIII | 1890s |
| RHP143351/3/44 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet XLIV | 1890s |
| RHP143351/3/45 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet XLV | 1890s |
| RHP143351/3/46 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet XLVI | 1890s |
| RHP143351/3/47 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet XLVII | 1890s |
| RHP143351/3/48 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheets XLVIII and XLVIIIa | 1890s |
| RHP143351/3/48/1 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet XLVIII | 1890s |
| RHP143351/3/48/2 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet XLVIIIa | 1890s |
| RHP143351/3/49 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet XLIX | 1890s |
| RHP143351/3/50 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet L | 1890s |
| RHP143351/3/51 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet LI | 1890s |
| RHP143351/3/52 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet LII | 1890s |
| RHP143351/3/53 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet LIII | 1890s |
| RHP143351/3/54 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet LIV | 1890s |
| RHP143351/3/55 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet LV | 1890s |
| RHP143351/3/56 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet LVI | 1890s |
| RHP143351/3/57 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet LVII and Caithness sheets XXXIa XXXI XXXVI and XXXVII | 1890s |
| RHP143351/3/58 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet LVIII | 1890s |
| RHP143351/3/59 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet LIX | 1890s |
| RHP143351/3/60 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet LX | 1890s |
| RHP143351/3/61 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet LXI | 1890s |
| RHP143351/3/62 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet LXII | 1890s |
| RHP143351/3/63 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet LXIII | 1890s |
| RHP143351/3/64 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet LXIV | 1890s |
| RHP143351/3/65 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet LXV | 1890s |
| RHP143351/3/66 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet LXVI | 1890s |
| RHP143351/3/67 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet LXVII and Caithness sheets XXXVI XXXVII and XLI | 1890s |
| RHP143351/3/68 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet LXVIII | 1890s |
| RHP143351/3/69 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet LXIX | 1890s |
| RHP143351/3/70 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet LXX | 1890s |
| RHP143351/3/71 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet LXXI | 1890s |
| RHP143351/3/72 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet LXXII | 1890s |
| RHP143351/3/73 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet LXXIII | 1890s |
| RHP143351/3/74 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet LXXIV | 1890s |
| RHP143351/3/75 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet LXXV | 1890s |
| RHP143351/3/76 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet LXXVI | 1890s |
| RHP143351/3/77 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet LXXVII | 1890s |
| RHP143351/3/78 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet LXXVIII | 1890s |
| RHP143351/3/79 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet LXXIX | 1890s |
| RHP143351/3/80 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet LXXX | 1890s |
| RHP143351/3/81 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet LXXXI | 1890s |
| RHP143351/3/82 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet LXXXII | 1890s |
| RHP143351/3/83 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet LXXXIII | 1890s |
| RHP143351/3/84 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet LXXXIV | 1890s |
| RHP143351/3/85 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet LXXXV | 1890s |
| RHP143351/3/86 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet LXXXVI | 1890s |
| RHP143351/3/87 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet LXXXVII | 1890s |
| RHP143351/3/88 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet LXXXVIII | 1890s |
| RHP143351/3/89 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet LXXXIX | 1890s |
| RHP143351/3/90 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet XC | 1890s |
| RHP143351/3/91 | Ordnance Survey 6 inch plans of Scotland: Sutherland sheets XCI and XCIa | 1890s |
| RHP143351/3/91/1 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet XCI | 1890s |
| RHP143351/3/91/2 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet XCIa | 1890s |
| RHP143351/3/92 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet XCII and Ross-shire sheets IIa IIb V and Va | 1890s |
| RHP143351/3/93 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet XCIII | 1890s |
| RHP143351/3/94 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet XCIV | 1890s |
| RHP143351/3/95 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet XCV | 1890s |
| RHP143351/3/96 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet XCVI | 1890s |
| RHP143351/3/97 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet XCVII | 1890s |
| RHP143351/3/98 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet XCVIII | 1890s |
| RHP143351/3/99 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet XCIXa | 1890s |
| RHP143351/3/100 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet C and Ross-shire parts of sheets V Va IX and X | 1890s |
| RHP143351/3/101 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet CI and Ross-shire parts of sheets X and XI | 1890s |
| RHP143351/3/102 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet CII and Ross-shire parts of sheets XI and XIa | 1890s |
| RHP143351/3/103 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet CIII | 1890s |
| RHP143351/3/104 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet CIV | 1890s |
| RHP143351/3/105 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet CV | 1890s |
| RHP143351/3/106 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet CVI | 1890s |
| RHP143351/3/107 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet CVII and Ross-shire parts of sheets XI XIa XVII and XVIII | 1890s |
| RHP143351/3/108 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet CVIII | 1890s |
| RHP143351/3/109 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet CIX | 1890s |
| RHP143351/3/110 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet CX | 1890s |
| RHP143351/3/111 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet CXI and Ross-shire parts of sheets XVIII XVIIIa XXVI and XXVII | 1890s |
| RHP143351/3/112 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet CXII and parts of Ross-shire sheets XXVII and XXVIII | 1890s |
| RHP143351/3/113 | Ordnance Survey 6 inch plan of Scotland: Sutherland sheet CXIII and part of Ross-shire sheet XXIX | 1890s |
| RHP143351/4/9 | Ordnance Survey 6 inch plan of Scotland: Ross-shire and Cromartyshire sheet IX and Sutherland sheet XCIXa | 1890s |
| RHP143351/4/10 | Ordnance Survey 6 inch plan of Scotland: Ross-shire sheet X and Sutherland sheets C and CI | 1890s |
| RHP143351/4/18 | Ordnance Survey 6 inch plan of Scotland: Ross-shire sheets XVIII and XVIIIa and parts of Sutherland sheets CVII and CVIII | 1890s |
| RHP143351/4/18/1 | Ordnance Survey 6 inch plan of Scotland: Ross-shire sheet XVIII and parts of Sutherland sheets CVII and CVIII | 1890s |
| RHP143351/4/27 | Ordnance Survey 6 inch plan of Scotland: Ross-shire sheet XXVII and parts of Sutherland sheets CXI and CXII | 1890s |
| RHP143351/4/29 | Ordnance Survey 6 inch plan of Scotland: Ross-shire and Cromartyshire sheet XXIX and Sutherland part of sheets CXIII | 1890s |
| RHP143400/4 | Ordnance Survey National Grid Square NC | 1970s-1980s |