Clerk, D. and Stuart, J. 1876. 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, (Nov. 1876), 468–469. DOI:https://doi.org/10.9750/PSAS.011.468.469.