Loney, J.W.M. 1928. An Instance of ’Looking-glass Writing’ in the Signatures of a Scottish charter in 1602, and a Consequent Discharge and Renunciation in 1605. Proceedings of the Society of Antiquaries of Scotland. 62, (Nov. 1928), 152–154. DOI:https://doi.org/10.9750/PSAS.062.152.154.