Anderson, J. “Note on a Late Celtic Armlet of Bronze, Now Presented to the National Museum; With Notes on the Identification of Two Other Late Celtic Armlets in the Museum, and on a Massive Bronze Armlet Recently Found in Sutherlandshire”. Proceedings of the Society of Antiquaries of Scotland, Vol. 38, Nov. 1904, pp. 460-7, doi:10.9750/PSAS.038.460.467.