Smith, J.A. 1867. Notice of a Remarkable Bronze Ornament with Horns found in Galloway, now at Abbotsford. Also of a Bronze Ornament, like a ’Swine’s Head,’ found in Banffshire. Proceedings of the Society of Antiquaries of Scotland. 7, (Nov. 1867), 334–357. DOI:https://doi.org/10.9750/PSAS.007.334.357.