“Letters from Lord Hailes and the Earl of Buchan Relative to a Proposed Collection of Scottish Portraits, and to the Formation of the Society of Antiquaries”. Proceedings of the Society of Antiquaries of Scotland 2 (November 30, 1858): 134–138. Accessed December 15, 2025. https://journals.socantscot.org/index.php/psas/article/view/4405.