@article{Geddes_2018, title={The earliest portrait of St Columba: Cod Sang 555, p 166}, volume={147}, url={http://journals.socantscot.org/index.php/psas/article/view/10108}, DOI={10.9750/PSAS.147.1245}, journal={Proceedings of the Society of Antiquaries of Scotland}, author={Geddes, Jane}, year={2018}, month={Nov.}, pages={127-145} }