Inglis, Harry R G. “Ancient Border Highways: The Minchmoor (Catrail) Road, the Wheel Causeway, the Annandale Forest Road, the Well Path, and the Enterkin”. Proceedings of the Society of Antiquaries of Scotland, vol. 58, Nov. 1924, pp. 203-2, doi:10.9750/PSAS.058.203.223.