Murray, Alexander. “Notice of an Ancient Cross-Bow Found under the Moss on the Estate of Auchmeddan, Aberdeenshire, in a Letter to the Secretary”. Proceedings of the Society of Antiquaries of Scotland 4 (November 30, 1863): 592. Accessed April 20, 2024. https://journals.socantscot.org/index.php/psas/article/view/5003.