Looking at fragments of tapestries online is frustrating at best. Any one who loves fibers knows that there is nothing like seeing fiberart (whatever that entails) in person. Being able to touch it is even better. And being able to see the back, invaluable. Because I cannot see the many Coptic textile fragments in person (and there are many that have survived even from the very beginnings of the Coptic culture, way back in the first century A.D.) it took me qute some time to unravel the first mystery: why did it seem like so many of the tapestry fragments were attached to a linen even weave background? I would like to say I solved this mystery on my own, but in fact I found the answer in a textile text book. I have discovered that some times the most comrehensive explanations for the orgin and structure of textiles comes from text books. They talk about all the geeky details from whether the yarns are S or Z spun, how many plies, what kind of weave, etc. Answers that are not commonly found in history books.