Martin, W. and Rotherham, E.C. 1896. Rude Bone Pins of large size made from Red-deer Horn, obtained from the Cairns of County Sligo, and Lough Crew, County Meath: With Illustrations and Remarks. Proceedings of the Society of Antiquaries of Scotland. 30, (Nov. 1896), 340–345. DOI:https://doi.org/10.9750/PSAS.030.340.345.