The books hail from Clairvaux Abbey, founded in 1115 by Cistercian monks in northern France, and its daughter monasteries. Some tomes are nearly 900 years old. Researchers had thought they were ...

A treasure expert is appealing for local historians to solve a mystery around the owner of a medieval seal matrix. The 13th or 14th Century silver matrix - used to stamp an impression on wax seals ...

French monks used animal skins to bind and cover their books. One group of books covers didn't look at all like the others.

An international team of archaeologists, bioinformatic specialists, and historians has discovered that many medieval books were bound using seal skin. In their paper published in the journal Royal ...

So last week, a group of researchers who were studying a set of medieval books published their ... books - they probably didn't know what a seal was. KELLY: These monks lived in Clairvaux.