“Account of the Excavation of the Camps and Earthworks at Birrenswark Hill in Annandale, Undertaken by the Society in 1898: (II) Account of the Excavations at Birrenswark and Description of the Plans and Sections”. 1899. Proceedings of the Society of Antiquaries of Scotland 33 (November): 219-43. https://doi.org/10.9750/PSAS.033.219.243.