“Notice of a Tomb on the Hill of Roseisle, Morayshire, Recently Opened; Also of the Chambered Cairns and Stone Circles at Clava, on Nairnside”. Proceedings of the Society of Antiquaries of Scotland, vol. 3, Nov. 1862, pp. 46-50, https://doi.org/10.9750/PSAS.003.46.50.