Laing, David. “Memorandum Respecting the Smellie Correspondence, Presented to the Society by the Trustees of the Late John Smellie”. Proceedings of the Society of Antiquaries of Scotland 5 (November 30, 1864): 120-129. Accessed March 29, 2024. http://journals.socantscot.org/index.php/psas/article/view/5118.