Jervise, Andrew. “Notice of a Coffin Cut Out of the Solid Rock, Containing an Urn, &C., Discovered at Ferne, Forfarshire”. Proceedings of the Society of Antiquaries of Scotland 3 (November 30, 1862): 80-81. Accessed March 28, 2024. http://journals.socantscot.org/index.php/psas/article/view/4495.