Callander, J.G. 1913. Notices of (1) A Bronze Socketed Axe from Daviot, Aberdeenshire, and (2) A Stone Mould for Casting Whorls, from Insch, Aberdeenshire, with (3) Notes on Lead Whorls, Lead Brooches, and Button Moulds. Proceedings of the Society of Antiquaries of Scotland. 47, (Nov. 1913), 450–462. DOI:https://doi.org/10.9750/PSAS.047.450.462.