“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” (1886) Proceedings of the Society of Antiquaries of Scotland, 20, pp. 91–96. doi:10.9750/PSAS.020.91.96.