Logan, G. (1859) “Notice of an Urn and other Sepulchral remains, &c., discovered in the Windy-Goul, on Arthur’s Seat, in cutting the New Road from Edinburgh to the Village of Duddingstone”, Proceedings of the Society of Antiquaries of Scotland, 2, pp. 420–422. doi: 10.9750/PSAS.002.420.422.