Curle, James, and Harry Tagg. “Note on a Primitive Weapon or Tool, Fashioned by Fixing a Stone in a Wooden Shaft, Found in a Moss at Bogancloch, Parish of Rhynie, Aberdeenshire”. Proceedings of the Society of Antiquaries of Scotland 59 (November 30, 1925): 18-20. Accessed March 29, 2024. http://journals.socantscot.org/index.php/psas/article/view/7626.