Smith, J.A. and McAdam, S. 1873. Notice of Bronze Celts or Axe Heads, which have apparently been Tinned; also of Bronze Weapons and Armlets, found along with portions of Metallic Tin near Elgin in 1868. Proceedings of the Society of Antiquaries of Scotland. 9, (Nov. 1873), 428–443. DOI:https://doi.org/10.9750/PSAS.009.428.443.