A. O. Curle, “A Note on Four Silver Spoons and a Fillet of Gold found in The Nunnery at Iona; and on a Finger-ring, part of a Fillet, and a fragment of Wire, all of Gold, found in St Ronnan’s Chapel, The Nunnery, Iona”, PSAS, vol. 58, pp. 102–111, Nov. 1924.