Robertson, Joseph. “Letter of Safe Conduct and Recommendation Granted by James II., King of Scots, to Nicholas Georgiades, a Greek of Arcosson: Travelling through Scotland to Collect the Alms of the Faithful for the Ransom of His Brother, Taken Prisoner by the Turks at the Capture of Constantinople in 1453”. Proceedings of the Society of Antiquaries of Scotland 2 (November 30, 1858): 159–161. Accessed November 3, 2024. https://journals.socantscot.org/index.php/psas/article/view/4410.