| RHP3671 | Plan of the division of Commonty of Rossie Moor | 1852 |
| RHP6689 | Plan of mussel beds in the Montrose Basin, Angus | Nov 1893 |
| RHP130012-130022 | Two hand coloured drawings and nine blueprints showing elevations, plans, sections and details of masonry and steelwork for doubling of Dunninald Viaduct near Lunan Bay (London and North Eastern Railway) | 1930 |
| RHP13080 | Sketch plan of Usan Creek: 1891. | 1891 |
| RHP13292 | Plan of Montrose Basin, Angus | 12 Jun 1805 |
| RHP13295 | Plan of the estate of Rossie, Angus | [19th century] |
| RHP14675 | Plan of the salmon fishings of Rossie in the River South Esk and inlet of the sea near Montrose, the property of Hercules Ross: 1807 (Vignette of mythological figures) | 1807 |
| RHP17624 | Plan of proposed doubling of the line of the London and North Eastern Railway between Montrose and Usan. | 1929 |
| RHP24511 | 1. Bound plan of land to be acquired by North British Railway.
2. Book of reference thereto.
3-4. Duplicates of Nos.1-2. | 1912 |
| RHP24636 | 1. Bound plans and sections of North British Railway showing lands to be acquired: 2. Book of reference thereto 3-4. Duplicates of Nos.1-2 | 1912 |
| RHP25149 | Plan and section of proposed doubling of line between Inverkeillor and Usan (London and North Eastern Railway). | 1924 |
| RHP25573 | Plan of proposed temporary siding for Messrs Mitchell Bros., Sons & Co Ltd during renewal of the Dunninald Viaduct (North British Railway) | 1920 |
| RHP29049 | Plan of proposed alterations to up loop line connections at Usan (North British Railway). | 1910 |
| RHP34480 | 1. Bound plans and sections of lands to be acquired for North British Railway. 2. Book of reference 3-4. Duplicates of 1-2. | 1912 |
| RHP39067 | Ordnance Survey 1/2500 plan (Forfarshire sheet XXXV.6), marked to show area of water, drainage, scavenging and lighting districts at Ferryden. | 1903 |
| RHP45903 | 1. Bound plans and sections of Newport Railway from Ferry Port on Craig to Wormit 2. Book of reference (Gazette notice bound in) | November 1865 |
| RHP75538 | Ordnance Survey 6 inch plan (Angus, sheet XXXIV.SE) marked to show farm boundaries | [1944-1955] |
| RHP75540 | Ordnance Survey 6 inch plan (Angus, sheet XXXV.SE) marked to show farm boundaries | [1944-1955] |
| RHP75541 | Ordnance Survey 6 inch plan (Angus, sheet XXXV.NW) marked to show farm boundaries | [1944-1955] |
| RHP75542 | Ordnance Survey 6 inch plan (Angus, sheet XXXV.SW) marked to show farm boundaries | [1944-1955] |
| RHP75543 | Ordnance Survey 6 inch plan (Angus, sheet XXXV.SW) marked to show farm boundaries | [1944-1955] |
| RHP75544 | Ordnance Survey 6 inch plan (Angus, sheet XXXV.NE) marked to show farm boundaries | [1944-1955] |
| RHP75567 | Ordnance Survey 6 inch plan (Angus, sheet XL.NE) marked to show farm boundaries | [1944-1955] |
| RHP75568 | Ordnance Survey 6 inch plan (Angus, sheet XL.NE) marked to show farm boundaries | [1944-1955] |
| RHP82204 | Architectural plan of ground floor [of Craig Manse, Angus] | 20 Jul 1900 |
| RHP82205 | Architectural plan of upper floor [of Craig Manse, Angus] | 20 Jul 1900 |
| RHP82206 | Architectural drawing [of Craig Manse, Angus] | 20 Jul 1900 |
| RHP94801 | Tracing of architectural plan of ground floor of Usan Coastguard Station, showing position of new baths, variously marked | Dec 1929 |
| RHP135908 | Plan of proposed doubling of railway line between Inverkeilor Station and Usan, (London & North Eastern Railway Company) | 9 & 21 February 1931 |
| RHP136093 | Coloured plan of the lands of Ferryden showing the track of the (North British Railway) accross Rossie Island | 1890 |
| RHP140372 | Architectural drawing of houses at New Cotton of Usan | 28 May 1835 |
| RHP142958 | Ordnance Survey 25 inch plan [Forfarshire Sheet XXXV.10] showing | 1884 |
| RHP143270 | Plan of proposed station at Usan (North British Railway) | 12 Oct 1883 |
| RHP143400/12/122 | Ordnance Survey 6 inch plan, Angus, Sheet NO 65 SW | 1960s-1970s |
| RHP143400/12/128 | Ordnance Survey 1/10000 plan, Angus, Sheet NO 675 NW | 1960s-1970s |
| RHP143400/12/129 | Ordnance Survey 6 inch plan, Angus, Sheet NO 75 SW | 1960s-1970s |