Gray, J M. “Notes on Examples of Old Heraldic and Other Glass, Existing In, or Having Connection With, Scotland; With Especial Reference to the Heraldic Rondel Preserved at Woodhouselee”. Proceedings of the Society of Antiquaries of Scotland, vol. 26, Nov. 1892, pp. 34-48, doi:10.9750/PSAS.026.34.48.