Craw, John Hewat. “An Underground Building at Midhouse, Orkney; Two Urns Found at Lintlaw, Berwickshire; And the Excavation of a Cairn at Drumelzier, Peeblesshire”. Proceedings of the Society of Antiquaries of Scotland, vol. 65, Nov. 1931, pp. 357-72, doi:10.9750/PSAS.065.357.372.