Anderson, Joseph. “Report on the Museums of Switzerland and North Italy, Obtained under the Victoria Jubilee Gift of His Excellency Dr R H Gunning, F.S.A. Scot”. Proceedings of the Society of Antiquaries of Scotland 24 (November 30, 1890): 478-510. Accessed March 28, 2024. http://journals.socantscot.org/index.php/psas/article/view/6376.