Clerk, Duncan, and John Stuart. “Notes of an Urn Found in a Cist in a Gravel Hillock Near Oban (in a Letter to the Secretary) With Notice of the so-Called Serpent-Mound of Lochnell”. Proceedings of the Society of Antiquaries of Scotland 11 (November 30, 1876): 468–469. Accessed July 18, 2024. https://journals.socantscot.org/index.php/psas/article/view/5761.