The Nuttall Encyclopedia
An ancient city in Mesopotamia; figures in early Church history, and is reputed to have contained at one time 300 monasteries; it fell into the hands of the Turks in 1515; is regarded as the sacred city of Abraham by Orientals.
Wood, James, ed. Entry for 'Edessa'. The Nuttall Encyclopedia. https://www.studylight.org/encyclopedias/eng/nut/e/edessa.html. Frederick Warne & Co Ltd. London. 1900.