“An Account of the Ancient Crosier of St Fillans, described in a Letter from William Thomson, A.M. Student of Christ Church, in Oxford, to the Earl of Buchan”, arch-scot, vol. 3, pp. 289–291, Nov. 1832, Accessed: Jan. 27, 2026. [Online]. Available: https://journals.socantscot.org/index.php/arch-scot/article/view/235