Smith, J. 1867. Notice of a Small Bronze Blade found in a Cinerary Urn at Balblair, Sutherlandshire; also Two Small Bronze Plates, in the Collection of His Grace the Duke of Sutherland. Proceedings of the Society of Antiquaries of Scotland. 7, (Nov. 1867), 475–477. DOI:https://doi.org/10.9750/PSAS.007.475.477.