1. Geological Survey Maps, Sheets 31, 32, 33.
2. Ordnance Maps (New Series), Sheet 358 (Land's End).
3. On the Metamorphic Rocks surrounding the Land's End Mass of Granite;Allport;Quart. Journ. Geol. Soc.,1876
4. Argall, W. H.—“On the Elvan Courses of Cornwall”, ‘Miners’ Assoc. Corn. and Devon for 1875,’ p. 37.
5. Elvan Courses of Cornwall;Barnett;Miners' Assoc. Corn.,1873