| RHP2992 | Plan of Colonsay and Oronsay, Argyll | 1804 |
| RHP3036/1-5 | Admiralty chart and plans of a proposed pier at Scalscaig | c 1865 |
| RHP3048 | Plan of the estate of Colonsay, Argyll | 1804 |
| RHP3079/1-2 | Plan of the estate of Colonsay, Argyll | 1804 |
| RHP3968 | Plan and sections of the harbour of Scalasaig (Scallisaig) in Colonsay | 1850 |
| RHP3969 | Plan of Scalasaig Harbour | 1854 |
| RHP5471 | Bound plan and section of proposed works at Scalasaig pier. | 1960 |
| RHP5472 | Bound plans and section of proposed works at Scalasaig pier. | 1961 |
| RHP35109 | Composite Ordnance Survey 1/2500 plan (Argyllshire, sheets CLVI., 1 and 5) of the estate of Colonsay, marked to show route of a proposed new road northwards from Scalasaig, as agreed with the contractors | 1905 |
| RHP35124 | Plan of the estate of Colonsay | 1804 |
| RHP35130/1-2 | Site plan of Benoran House and grounds, with duplicate | 1909 |
| RHP40813 | 1. Bound plans and sections of proposed pier at Scalasaig.
2. Duplicate of No. 1. | 1961 |
| RHP44107 | Plan of Colonsay and Oronsay. | 1884 |
| RHP44108 | Ordnance Survey 6 inch plan marked to show bounds of various lands between Balnahard and Garvard. | 1881 |
| RHP44109 | Ordnance Survey 1/2500 plan (Argyllshire, sheet CLVI.5) marked to show water supply to Benoran House and adjoining property: [1899 or post] | 1899 |
| RHP44110 | Ordnance Survey 1/2500 plan (Argyllshire, sheet CLVI.5) marked to show water supply to Colonsay House. | 1899 |
| RHP44111 | Ordnance Survey 1/2500 plan (Argyllshire, sheet CLVI.5) marked to show proposed access road and steamer pier at Scalasaig Harbour. | 1905 |
| RHP44112 | Ordnance Survey 1/2500 plan marked to show route of proposed road and deviation on estate of Colonsay, northwards from Scalasaig Harbour. | 1905 |
| RHP44113 | Ordnance Survey 1/2500 plan marked to show route of proposed road, authorised deviation and [new] junction [with existing private road] to north of Scalasaig Harbour. | 1905 |
| RHP44114 | Sections at proposed road (peg 7 to peg 33) on estate of Colonsay, northwards from [Scalasaig Harbour]. | 1905 |
| RHP44115 | Sections of proposed road (peg 33 to peg 69) on estate of Colonsay, to north of [Scalasaig Harbour]. | 1905 |
| RHP44146 | Sections of proposed road (from start to peg 7) on estate of Colonsay, northwards from [Scalasaig Harbour]. | 1905 |
| RHP46211 | Plan of estate of Colonsay, Argyll | 1804 |
| RHP140388 | Plan of Colonsay and Oronsay, Argyll | c1900 |
| RHP140389 | Plan of Colonsay and Oronsay, Argyll | 1934 |
| RHP140390 | Ordnance Survey 1/2500 plan (Argyll, part sheet) | 1961 |
| RHP140391 | Plan of Colonsay glebe, Argyll | 21 Jul 1969 |
| RHP140392 | Architectural drawing of proposed pier at Scalasaig | 1959 |
| RHP143000/1/28 | Ordnance Survey 1 inch map (Sheet 27, Portaskaig) | 1885 |
| RHP143000/1/36 | Ordnance Survey 1 inch map (Sheet 35, Colonsay) | 1885 |