Christison, David. “Notice of a Flint Arrow-Head Found at Ballachulish, and Another at Boleskin. Exhibited by Alexander Ross, F.S.A. Scot., Inverness”. Proceedings of the Society of Antiquaries of Scotland, vol. 23, Nov. 1889, pp. 93-94, doi:10.9750/PSAS.023.93.94.