| RHP5559 | Plan of Graemsay island showing sites of proposed lights of Hoy | 1847 |
| RHP5560 | Plan of Graemsay island showing sites of the lights of Hoy | 1852 |
| RHP5561 | Plan of Graemsay island showing proposed lights of Hoy; attached to minute of sale | 1848 |
| RHP34162 | Admiralty chart of Hoy Sound. | 1905 |
| RHP97648 | Ordnance Survey 6 inch plan (Orkney, sheet CVI) marked to show classification of land | [1944-1954] |
| RHP97652 | Ordnance Survey 6 inch plan (Orkney, sheet CXI) marked to show classification of land | [1944-1954] |
| RHP97653 | Ordnance Survey 6 inch plan (Orkney, sheet CXII) marked to show classification of land | [1944-1954] |