Ross, Alexander. “Notice of the Discovery of Portions of Two Penannular Brooches of Silver, With Beads of Glass and Amber, and a Silver Coin of Coenwulf, King of Mercia (A.D. 795-818), at Mains of Croy, Inverness-Shire”. Proceedings of the Society of Antiquaries of Scotland, vol. 20, Nov. 1886, pp. 91-96, doi:10.9750/PSAS.020.91.96.