“Letter from the Privy Council of Scotland, Directed Thus: ’To the Earle of Callander, Sheriff Principall of the Shyre of Stirling. In Haste.’ From the Original in the Musaeum”. Archaeologia Scotica, vol. 1, Nov. 1793, pp. 552-3, https://soas-test.journals.ed.ac.uk/index.php/arch-scot/article/view/356.