Joass, J.M. 1871. Notes of the Discovery of a Necklace of Beads and Plates of Shale and Jet, along with Flint Arrow Heads, found in a Cist under a Small Tumulus at Torrish, Kildonan, Sutherlandshire. Proceedings of the Society of Antiquaries of Scotland. 8, (Nov. 1871), 408–411. DOI:https://doi.org/10.9750/PSAS.008.408.411.