Since we don't know what was actually purchased and what was actually destroyed, how do you expect us to furnish an example? This would require the destroyers to admit it, and beyond that it would require all of them to admit it since more than one of them might have been responsible for the extinction of one text. Seeing as they were already keeping this operation under wraps, I don't see that happening. "possibly extinct because no copies available online" is probably the best we can do.

The distributed nature of the problem and the utter lack of transparency are huge factors here too.