Lovett, Edward. “Notice of the Gun Flint Manufactory at Brandon, With Reference to the Bearing of Its Processes Upon the Modes of Flint-Working Practised in Prehistoric Times: (With Illustrative Examples of the Tools and Specimens of the Manufacture.)”. Proceedings of the Society of Antiquaries of Scotland 21 (November 30, 1887): 206–212. Accessed April 24, 2024. https://journals.socantscot.org/index.php/psas/article/view/6239.