Neish, James. 1871. “Notes of Stone Celts Found in Glenshee, Forfarshire, 1870; And of Clay Cones (Loom Weights) Found at Ravensby, Parish of Barrie, Forfarshire”. Proceedings of the Society of Antiquaries of Scotland 9 (November):174-76. https://doi.org/10.9750/PSAS.009.174.176.