2001.75.3 Letter to the Duke of Argyll from Lachlan MacQuarrie dated 22/12/1863 (Bundle 1541) about the souterrain at Greenhill

Canmore ID 21480

Goudie, G and H Dryden (1917) An Underground Gallery recently discovered in the Island of Tiree. Proceedings of the Society of Antiquaries of Scotland 51, pp. 100–108.