The Abgar Mosaic was found in 1979 on Çamlık Hill in the Urfa Şehitlik District.
See:
- http://arkeofili.com/?p=18120
- Emran El-Badawi, Tales of King Abgar: A Basis to Investigate Earliest Syrian Christian Syncretism - http://www.suryoyo.uni-goettingen.de/library/Emran-ElBadawi-Abgar.pdf
- http://www.iranicaonline.org/articles/abgar-dynasty-of-edessa-2nd-century-bc-to-3rd-century-ad
- Barış Salman, Family, Death and Afterlife According to Mosaics of the Abgar Royal Period in the Region of Osroene, Journal of Mosaic Research . 2008, Vol. 1/2, p103-115 - https://www.academia.edu/6066970
- http://lootbusters.blogspot.com/2016/10/edessa-mosaics-with-syriac-inscriptions.html