“Descriptive List of Antiquities near Loch Etive, Argyllshire, consisting of Vitrified Forts, Cairns, Circles, Crannogs, &c.; with some Remarks on the Growth of Peat” (1872) Proceedings of the Society of Antiquaries of Scotland, 9, pp. 81–106. doi:10.9750/PSAS.009.81.106.