A. Ross, “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”, PSAS, vol. 20, pp. 91–96, Nov. 1886.