Joass, J. 1871. “Note on the Discovery of Urns Set in a Round Hole in the Ground under a Tumulus, and of an Inverted Urn Covering Calcined Bones at Gordonbush, Sutherlandshire. In a Letter to John Stuart, LL.D., Secretary”. Proceedings of the Society of Antiquaries of Scotland 8 (November), 466. https://doi.org/10.9750/PSAS.008.466.