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Laidlay, J.W. 1871. Notice of an Ancient Structure and Remains from a Kitchen Midden, on ’The Ghegan,’ an Isolated Rock near Seacliff, East-Lothian. Proceedings of the Society of Antiquaries of Scotland. 8, (Nov. 1871), 372–377. DOI:https://doi.org/10.9750/PSAS.008.372.377.