Mackenzie, W. “Some Stray Inscriptions - (1) Runes on Standing Stone at Oykell Bridge; (2) on Bracket at Gleneagles; (3) on the Kindrochit Brooch; (4) the Atholl Motto; (5) Two Carved Stones of the Urquharts of Cromarty”. Proceedings of the Society of Antiquaries of Scotland 61 (November 30, 1927): 173-191. Accessed January 31, 2023. http://soas.is.ed.ac.uk/index.php/psas/article/view/7698.