Ewart, Edward, and Alexander O Curle. “Notice of the Examination of a Cairn and Interments of the Early Iron Age at the Black Rocks, Gullane, Haddingtonshire, on 14th March, 1908”. Proceedings of the Society of Antiquaries of Scotland, vol. 42, Nov. 1908, pp. 332-41, doi:10.9750/PSAS.042.332.341.