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, 334–357. https://doi.org/10.9750/PSAS.007.334.357