| RHP4285 | Plan of harbour at Port of Ness, Island of Lewis | 1883 |
| RHP21138 | Ordnance Survey 6 inch plan (Island of Lewis, sheet 5), marked at Borve relative to land application | [late 19th century] |
| RHP21142 | Plan of proposed small-holdings at Galson | 1914 |
| RHP31966 | Ordnance Survey 1 inch map (Sheet 105), marked respecting lochs between Barvas and Bragor. | 1945 |
| RHP35128/1-13 | Plans showing feus for churches in Lewis, Ross and Cromarty | 1909 |
| RHP43267 | Plan of island of Lewis, Ross and Cromarty | 1821 |
| RHP43425 | Ordnance Survey 1 inch map to show roads between Stornoway and Carloway. | 1907 |
| RHP44253 | Plan of proposed small holdings scheme for Board of Agriculture for Scotland at and round Galson. | 1913-1914 |
| RHP82257 | Architectural ground and first floor plans of Barvas Manse | Jul 1883 |
| RHP82258 | Architectural attic plan and section of Barvas Manse | Jul 1883 |
| RHP82259 | Architectural elevations of Barvas Manse | Jul 1883 |
| RHP82260 | Architectural plans and elevations of Barvas Manse offices | Jul 1883 |
| RHP82261 | Architectural block plan of Barvas Manse and offices | Jul 1883 |
| RHP82286 | Bound plans and section of Port of Ness Harbour Provisional Order (Gazette notice bound in) | Oct 1888 |
| RHP142640 | Architectural drawing of adjacent houses and gardens in Melbost, Lewis | 18 Jun 1903 |
| RHP143000/3/18 | Ordnance Survey 1 inch map (Sheet 105, [Isle of Lewis]) | 1858 |
| RHP143000/3/24 | Ordnance Survey 1 inch map (Sheet 111, [Isle of Lewis]) | 1858 |
| RHP143000/3/25 | Ordnance Survey 1 inch map (Sheet 112, [Isle of Lewis]) | 1858 |
| RHP143400/3/16 | Ordnance Survey 1/10000 plan, Ross and Cromarty (Lewis and Harris), Sheet NB 23 NW | 1981 |
| RHP143400/3/18 | Ordnance Survey 1/10000 plan, Ross and Cromarty (Lewis and Harris), Sheet NB 24 NW | 1981 |
| RHP143400/3/19 | Ordnance Survey 1/10000 plan, Ross and Cromarty (Lewis and Harris), Sheet NB 24 NE | 1981 |
| RHP143400/3/20 | Ordnance Survey 1/10000 plan, Ross and Cromarty (Lewis and Harris), Sheet NB 24 SW | 1981 |
| RHP143400/3/28 | Ordnance Survey 1/10000 plan, Ross and Cromarty (Lewis and Harris), Sheet NB 34 NW | 1981 |
| RHP143400/3/29 | Ordnance Survey 1/10000 plan, Ross and Cromarty (Lewis and Harris), Sheet NB 34 NE | 1981 |
| RHP143400/3/30 | Ordnance Survey 1/10000 plan, Ross and Cromarty (Lewis and Harris), Sheet NB 35 NE | 1981 |
| RHP143400/3/31 | Ordnance Survey 1/10000 plan, Ross and Cromarty (Lewis and Harris), Sheet NB 35 SE | 1981 |
| RHP143400/3/32 | Ordnance Survey 1/10000 plan, Ross and Cromarty (Lewis and Harris), Sheet NB 35 SW | 1981 |
| RHP143400/3/41 | Ordnance Survey 1/10000 plan, Ross and Cromarty (Lewis and Harris), Sheet NB 45 NW | 1981 |
| RHP143400/3/42 | Ordnance Survey 1/10000 plan, Ross and Cromarty (Lewis and Harris), Sheet NB 46 SE | 1981 |
| RHP143400/3/48 | Ordnance Survey 1/10000 plan, Ross and Cromarty (Lewis and Harris), Sheet NB 56 NW | 1981 |
| RHP143400/3/49 | Ordnance Survey 1/10000 plan, Ross and Cromarty (Lewis and Harris), Sheet NB 56 SW | 1981 |