Sr. Ann sends along a link on Pinterest to:
A collection of photo images related to the "Mandylion of Edessa", a semi-legendary relic of Christianity, a square or rectangular piece of cloth bearing the image of the face of Jesus Christ, which first appeared in the city of Edessa in the 6th century. Many believe that this relic and the face on the Shroud of Turin are one and the same.
I count 29 different images, all with captions and most with extended captions. Interesting. It should be a useful reference.
Pinterest seems interesting. I tried a search with “Mandylion of Edessa” and got similar, but different, results. It is different than Google Images.