“Notes on (1) a Two-Storeyed Grave at Little Asta, Shetland; (2) Certain Prehistoric Relics from Shetland; And (3) a Viking Brooch of Silver from Skaill Bay, Orkney”. Proceedings of the Society of Antiquaries of Scotland, vol. 66, Nov. 1932, pp. 69-85, https://doi.org/10.9750/PSAS.066.69.85.