Mackenzie, W. (1927). 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, 173-191. https://doi.org/10.9750/PSAS.061.173.191