Anderson, J. 1904. Notice of a Sculptured Stone with Ogham Inscription, from Latheron, presented to the National Museum by Sir Francis Tress Barry, Bart., M.P. Hon. F.S.A. Scot., Keiss Castle, Caithness; and of Two Sculptured Stones, recently discovered by Rev. D. Macrae, B.D., at Edderton, Ross-shire. Proceedings of the Society of Antiquaries of Scotland. 38, (Nov. 1904), 534–541. DOI:https://doi.org/10.9750/PSAS.038.534.541.